第一篇：大学英语四级常考语法总结

大学英语四级常考语法总结

一、虚拟语气。应着重复习能引起虚拟语气的某些介词、介词短语和连词(如lest, in case, otherwise等);一部分表示建议、主张、命令等概念的词语，由于本身隐含说话人的主观愿望，其后的主语从句、宾语从句、同位语从句往往采用“should+动词原形”;虚拟倒装句;在would rather, wish, as if, it’s time that等句型中使用适当形式表达主观愿望;混合虚拟句。

二、独立主格题。一般说来，在句子中没有连接词的情况下，逗号是无力连接两个句子的，其中一个分句要么是非谓语形式，要么是独立主格结构。两种结构都做状语，不同的是独立主格结构有自己的逻辑主语。

三、时态。英语中共有16个时态。四级考试中出现最多的是将来完成时、现在完成时、过去完成时和完成进行时。

四、名词性从句。形容词性的定语从句是考核的重点，用什么引导词，引导词前面的介词形式，引导词在从句中做什么成分，从句的语序等均有可能成为考点。此外，主语从句、同位语从句、宾语从句也应适当复习。

五、主谓一致。这类考题灵活性大，需要根据实际情况判断谓语动词的单复数形式。一部分具有生命意义的集合名词做主语时谓语动词多采用复数形式，如people, poultry, militia等;用and连接的成分表单一概念时谓语动词用单数;就近原则：主语中含有某些连词(如as well as, besides, in addition to等)时，谓语动词的数同第一个主语保持一致。

六、倒装结构。分为全部倒装和部分倒装。那些否定词(组)、介词短语能引起倒装句，部分倒装和全部倒装有和区别，as在倒装结构中的用法及意义等等，都是考生应当重视的地方。

七、非谓语动词。①根据非谓语动词同其所修饰的名词或逻辑主语的一致关系，确定使用主动语态或被动语态，然后考虑采用现在分词、现在分词被动式或过去分词;②非谓语动词同主句谓语动词动作发生的先后关系。动作正在进行的用现在分词进行式，同时发生或不分先后发生的用现在现在分词一般式或过去分词;在主句谓语动词之前发生的用现在分词完成式、不定式完成式;发生在主句谓语动词之后的多用不定式一般式;③表状态多用分词，表目的多用不定式。

第二篇：大学英语四级常考词汇

1.alter v.改变，改动，变更 2.burst vi.n.突然发生，爆裂

3.dispose vi.除掉；处置；解决；处理(of)4.blast n.爆炸；气流 vi.炸，炸掉 5.consume v.消耗，耗尽

6.split v.劈开；割裂；分裂 a.裂开的7.spit v.吐（唾液等）；唾弃 8.spill v.溢出，溅出，倒出

9.slip v.滑动，滑落；忽略

10.slide v.滑动，滑落 n.滑动；滑面；幻灯片

11.bacteria n.细菌

12.breed n.种，品种 v.繁殖，产仔

13.budget n.预算 v.编预算，作安排 14.candidate n.候选人

15.campus n.校园

16.liberal a.慷慨的；丰富的；自由的 17.transform v.转变，变革；变换

18.transmit v.传播，播送；传递 19.transplant v.移植

20.transport vat.运输，运送 n.运输，运输工具

21.shift v.转移；转动；转变

22.vary v.变化，改变；使多样化

23.vanish vi.消灭，不见

24.swallow v.吞下，咽下 n.燕子

25.suspicion n.怀疑，疑心

26.suspicious a.怀疑的，可疑的

27.mild a.温暖的，暖和的；温柔的，味淡的28.tender a.温柔的；脆弱的

29.nuisance n.损害，妨害，讨厌（的人或事物）

30.insignificant a.无意义的，无足轻重的；无价值的

31.accelerate vt.加速，促进

32.absolute a.绝对的，无条件的；完全的33.boundary n.分界线，边界

34.brake n.刹车，制动器 v.刹住（车）

35.catalog n.目录（册）v.编目

36.vague a.模糊的，不明确的37.vain n.徒劳，白费

38.extinct a.绝灭的，熄灭的

39.extraordinary a.不平常的，特别的，非凡的40.extreme a.极度的，极端的 n.极端，过分

41.agent n.代理人，代理商；动因，原因

42.alcohol n.含酒精的饮料，酒精

43.appeal n./vi.呼吁，恳求

135.video n.电视，视频 a.电视的，录像的136.videotape n.录像磁带 v.把...录在录像带上

137.offend v.冒犯，触犯

138.bother v.打搅，麻烦

139.interfere v.干涉，干扰，妨碍

140.internal a.内部的，国内的141.beforehand ad.预先，事先

142.racial a.人种的种族的143.radiation n.放射物，辐射

144.radical a.根本的；激进的

145.range n.幅度，范围 v.（在某范围内）变动

146.wonder n.惊奇，奇迹 v.想知道，对...感到疑惑

147.isolate vt.使隔离，使孤立

148.issue n.问题，争论点；发行，（报刊）一期

149.hollow a.空的，中空的，空虚道

150.hook n.钩 vt.钩住

151.adequate a.适当地；足够

152.adhere vi.粘附，附着；遵守，坚持

153.ban vt.取缔，禁止

154.capture vt.俘虏，捕获

155.valid a.有效的，有根据的；正当的156.valley n.山谷，峡谷

157.consistent a.坚固定；一致的，始终如一的158.continuous a.继续的，连续（不断）的159.continual a.不断地，频繁的160.explode v.爆炸；爆发；激增

161.exploit v.剥削；利用，开采

162.explore v.勘探

163.explosion n.爆炸；爆发；激增

164.explosive a.爆炸的；极易引起争论的165.remote a.遥远的，偏僻的166.removal n.除去，消除

167.render vt.使得，致使

167.render 解释比较长，可要仔细体会啊！

168.precaution n.预防，防备，警惕

169.idle a.懒散的，无所事事的170.identify vt.认出，鉴定

171.identify n.身份；个性，特性

172.poverty n.贫穷

173.resistant a.(to)抵抗的，抗...的，耐...的174.resolve vt.解决；决定，决意

175.barrel n.桶

176.bargain n.便宜货 vi.讨价还价 177.coarse a.粗的，粗糙的，粗劣的178.coach n.教练；长途公共汽车

179.code n.准则，法规，密码

180.coil n.线圈 v.卷，盘绕

181.adult n.成年人

182.advertise v.为...做广告

183.advertisement n.广告

184.agency n.代理商，经销商

185.focus v.（使）聚集 n.焦点，中心，聚焦

186.forbid vt.不许，禁止

187.debate n./v.辩论，争论

188.debt n.欠债

189.decade n.十年

190.enclose vt.围住；把...装入信封

191.encounter vt./n.遭遇，遭到

192.globe n.地球，世界；地球仪

193.global a.全球的；总的194.scan vt.细看；扫描；浏览

195.scandal n.丑事，丑闻

196.significance n.意义；重要性

197.subsequent a.随后的，后来的198.virtue n.美德，优点

199.virtual a.实际上的，事实上的

200.orient vt.使适应，(to, toward)使朝向 n.东方 251.moisture n.潮湿

252.promote vt.促进；提升

253.region n.地区；范围；幅度

254.register v./n.登记，注册

255.stable a.稳定的

256.sophisticated a.老于世故的，老练的；很复杂的

257.splendid a.极好的，壮丽的，辉煌的258.cancel vt.取消，废除

259.variable a.易变的，可变的260.prospect n.前景，前途；景象

261.prosperity n.兴旺，繁荣

262.aspect n.方面；朝向；面貌

263.cope vi.(with)（成功地）应付，处理

264.core n.果心，核心

265.maintain vt.维持，保持；坚持，主张

266.mainland n.大陆

267.discipline n.纪律；惩罚；学科

268.domestic a.本国的，国内的；家用的；家庭的269.constant a.不变的，恒定的 n.常数

254.register v./n.登记，注册

255.stable a.稳定的

256.sophisticated a.老于世故的，老练的；很复杂的

257.splendid a.极好的，壮丽的，辉煌的258.cancel vt.取消，废除

259.variable a.易变的，可变的260.prospect n.前景，前途；景象

261.prosperity n.兴旺，繁荣

262.aspect n.方面；朝向；面貌

263.cope vi.(with)（成功地）应付，处理

264.core n.果心，核心

265.maintain vt.维持，保持；坚持，主张

266.mainland n.大陆

267.discipline n.纪律；惩罚；学科

268.domestic a.本国的，国内的；家用的；家庭的269.constant a.不变的，恒定的 n.常数

270.cliff n.悬崖，峭壁

271.authority n.权威；当局

272.audio a.听觉

273.attitude n.态度

274.community n.社区，社会

275.commit vt.犯（错误，罪行等），干（坏事等）

276.comment n./vt.评论

277.distinguish vt.区分，辨别

278.distress n.痛苦，悲伤 vt.使痛苦

279.facility n.[pl.] 设备，设施；便利，方便

280.faculty n.能力，技能；系，学科，学院；全体教员

281.mixture n.混合，混合物

282.mood n.心情，情绪；语气

283.moral a.道德上的，有道德的284.prominent a.突出的285.substance n.物质；实质

286.substantial a.可观的；牢固的；实质的287.prompt vt.促使 a.敏捷的，及时的288.vivid a.生动的

289.vocabulary n.词汇（量）；词汇表

290.venture n.风险投资，风险项目 v.冒险；取于

291.version n.版本，译本；说法

292.waist n.腰，腰部

293.weld v./n.焊接

294.yawn vi.打哈欠

295.yield vi.(to)屈服于；让出，放弃 n.产量 备注： 296.zone n.地区，区域

297.strategy n.战略，策略

298.strategic a.战略（上）的，关键的299.tense a.紧张的 v.拉紧 n.时态

300.tension n.紧张（状态），张力 301.avenue n.林荫道，大街

302.available a.现成可用的；可得到的

303.comparable a.(with, to)可比较的，类似的304.comparative a.比较的，相对的305.dash vi.猛冲，飞奔

306.data n.数据，资料

307.pe vi.跳水，潜水

308.perse a.不同的，多种多样的309.entitle vt.给...权利，给...资格

310.regulate vt.管理，调节

311.release vt./n.释放，排放；解释解脱

312.exaggerate v.夸大，夸张

313.evil a.邪恶的，坏的

314.shrink vi.起皱，收缩；退缩

315.subtract v.减（去）

316.suburb n.市郊

317.subway n.地铁

318.survey n./vt.调查，勘测

319.wealthy a.富裕的320.adjust v.调整，调节

321.attach vt.系，贴；使附属

322.profit n.利润，益处；v.有益于，有利于

323.profitable a.有利可图的324.slope n.斜坡，斜面

325.reinforce vt.增强，加强

326.reject vt.拒绝

327.fatal a.致命的；重大的328.fate n.命运

329.humble a.谦逊的；谦虚的330.illegal a.不合法的，非法的

331.award vt.授予，判给 n.奖品，奖金

332.aware a.意识到

333.column n.柱，圆柱；栏，专栏

334.comedy n.喜剧

335.dumb a.哑的；沉默的336.dump vt.倾卸，倾倒

337.deaf a.聋的；不愿听的338.decorate vt.装饰，装璜

339.principal a.最重要的 n.负责人，校长

340.principle n.原则，原理

341.prior a.优先的，在前的342.priority n.优先，重点

343.prohibit vt.禁止，不准

344.remarkable a.值得注意的，异常的，非凡的345.remedy n./vt.补救，医治，治疗

346.repetition n.重复，反复

347.vain a.徒劳的，无效的

348.undertake vt.承担，着手做；同意，答应

349.unique a.唯一的，独特的350.obstacle n.障碍（物），妨碍

351.odd a.奇特的，古怪的；奇数的352.omit vt.省略

353.opponent n.敌手，对手

354.opportunity n.机会，时机

355.orchestra n.管弦乐队

356.semester n.学期；半年

357.semiconductor n.半导体

358.seminar n.研讨会

359.terminal a.末端的，极限的 n.终点

360.territory n.领土

361.approximate a.大概的，大约 v.近似

362.arbitrary a.随意的，未断的363.architect n.建筑师

364.architecture n.建筑学

365.biology n.生物学

366.geography n.地理（学）

367.geology n.地质学

368.geometry n.几何（学）

369.arithmetic n.算术

370.algebra n.代数

371.entertainment n.娱乐；招待，款待

372.enthusiasm n.热情，热心

373.entry n.进入，入口处；参赛的人（或物）

374.environment n.环境

375.episode n.插曲，片段

376.equation n.方程（式）

377.restrain vt.阻止，抑制

378.restraint n.抑制，限制

379.resume v.（中断后）重新开始

380.severe a.严重的381.sexual a.性的

382.simplicity n.简单；朴素

383.simplify vt.简化

471.shallow a.浅的472.shiver vi/n.发抖

473.shrug v./n.耸肩

474.signature n.签名

475.sincere a.诚挚的，真诚的476.utility n.功用，效用

477.utilize vt.利用

478.utter vt.说出 a.完全的，彻底的479.variation n.变化，变动

480.vehicle n.交通工具，车辆

481.applause n.鼓掌，掌声

482.appliance n.器具，器械

483.consent n.准许，同意 vi(to)准许，同意484.conquer vt.征服

485.defect n.缺点，缺陷

486.delicate a.易碎的；娇弱的；精美的487.evolve v.演变

488.evolution n.演变，进化

489.frown v./n.皱眉

490.frustrate vt.使沮丧

491.guarantee vt./n.保证

492.guilty a.内疚的；有罪的493.jealous a.妒忌的494.jeans n.牛仔裤

495.liquor n.酒，烈性酒

496.liter/litre n.升

497.modest a.谦虚道

498.molecule n.分子

499.orbit n.轨道 v.（绕...）作轨道运行

500.participate v.(in)参与，参加 501.particle n.微粒

502.particularly ad.特别，尤其

503.respond vi.回答，答复；反应

504.response n.回答，答复；反应

505.sensible a.明智的

506.sensitive a.敏感到，灵敏的507.tremble vi.颤抖

508.tremendous a.巨大的；精彩的509.trend n.趋向，倾向

510.trial n.审讯；试验

511.apparent a.显然的，明白的512.appetite n.胃口；欲望

513.deposit n.存款，定金 v.存放，储蓄

514.deputy n.副职，代表

515.derive vt.取得，得到；(from)起源于

516.descend v.下来，下降

517.missile n.导弹

518.mission n.使命；代表团

519.mist n.薄雾

520.noticeable a.显而易见到

521.notify vt.通知，告知

522.notion n.概念；意图，想法

523.resemble vt.像，类似于

524.reveal vt.揭露

525.revenue n.收入，岁入；税收

526.shelter n.掩蔽处；住所

527.shield n.防护物，盾 vt.保护，防护

528.vital a.重要的；致命的，生命的529.vitally ad.极度，非常；致命地

530.urban a.城市的531.urge vt.鼓励，激励

532.urgent a.急迫的，紧急得

533.usage n.使用，用法

534.violence n.强力，暴力

535.violent a.强暴的536.violet a.紫色的537.weed n.杂草，野草

538.welfare n.福利

539.whatsoever ad.（用于否定句）任何

540.whereas conj.然而，但是，尽管

541.essential a.必不可少的；本质的542.estimate n./vt.估计，估量

543.evaluate vt.评估，评价

544.exceed vt.超过，越出

545.exceedingly ad.非常，极其

546.exclaim v.呼喊，大声说

547.exclude vt.把...排斥在外，不包括

548.exclusive a.读有的，排他的549.excursion n.远足

550.flash vi.闪光，闪耀

551.flee vi.逃走

552.flexible a.易弯曲的553.flock n.羊群，（鸟兽等）一群；一伙人554.hardware n.五金器具

555.harmony n.和谐，融洽

556.haste n.急速，急忙

557.hatred n.憎恶，憎恨

558.incident n.事件，事变

647.electron n.电子

648.volcano n.火山

649.volume n.卷，册；体积，容量

650.fatigue n.疲劳，劳累

651.faulty a.有错误的，有缺点的

652.favorable a.称赞道；有利的，顺利的

653.favorite a.特别受喜欢的 n.喜爱的人或物

654.gallery n.画廊

655.gallon n.加仑

656.gap n.间隔，差距

657.garbage n.垃圾，废物

658.gaze v.凝视，注视

659.gear n.齿轮，传动装置

660.gene n.基因

661.lest conj.唯恐，免得

662.liable a.可能的，大概的；(to)易于...663.liberal a.自由得

664.liberty n.自由

665.license/license n.许可证，执照

666.moisture n.潮湿

667.motivate vt.激励，激发

668.motive n.动机，目的

669.generate vt.生成，产生（光、热、电等）

670.genius n.天才，天赋

671.genuine a.真的，真诚的672.gasoline n.汽油

673.germ n.微生物，细菌

674.gesture n.姿势，手势

675.giant a.巨大的 n.巨人，巨物

676.glimpse n.一瞥，一看

677.glory n.光荣，荣誉

678.glorious n.光荣的，极好的679.golf n.高尔夫球运动

680.hydrogen n.氢

681.oxygen n.氧

682.hostile a.敌对的，敌意大

683.household n.家庭，户

684.hook n.钩

685.holy a.神圣地，圣洁的686.hint n.暗示，示意

687.hesitate v.犹豫

688.highlight vt.强调，突出

689.hence ad.因此，所以；今后，从此

690.herd n.兽群，牧群

691.deliberately adv.故意的692.attraction n.吸引，吸引力

693.destructive adj.破坏性的694.starvation n.饥饿，饿死

695.exhaustion n.竭力，疲惫

696.strike n.罢工 v.打击，罢工

697.strength n.力量，力气

698.await vt.等候

699.deportation n.放逐

700.identification n.鉴别，证明

第三篇：小升初英语常考语法知识归纳

小升初英语常考语法知识归纳

一.名词：名词单复数，名词的格

(一)名词单复数

1.一般情况，直接加-s，如：book-books, bag-bags, cat-cats, bed-beds

2.以s.x.sh.ch结尾，加-es，如：bus-buses, box-boxes, brush-brushes, watch-watches

3.以“辅音字母+y”结尾，变y为i, 再加-es，如：family-families, strawberry-strawberries

4.以“f或fe”结尾，变f或fe为v, 再加-es，如：knife-knives

5.不规则名词复数：

man-men, woman-women, policeman-policemen, policewoman-policewomen, mouse-mice

child-children, foot-feet, tooth-teeth, fish-fish, people-people, Chinese-Chinese, Japanese-Japanese

不可数名词的复数就是原型： paper, juice, water，milk，rice，tea

(二)名词的格

(1)有生命的东西的名词所有格：

a)单数后加’s 如: Lucy’s ruler

my father’s shirt

b)以s 结尾的复数名词后加’如: his friends’ bags

c)不以s 结尾的复数后加’s children’s shoes

 并列名词中，如果把 ’s加在最后一个名词后，表示共有, 如:

Tom and Mike’s car 汤姆和迈克共有的小汽车

 要表示所有物不是共有的，应分别在并列名词后加’s

Tom’s and Mike’s cars 汤姆和麦克各自的小汽车

(2)表示无生命东西的名词通常用“ of +名词”来表示所有关系：如:

a picture of the classroom

a map of China

二.冠词：不定冠词，定冠词种类：

(1)不定冠词：a / an

a unit / an uncle

元音开头的可数名词前用an :

an egg / an apple / an orange / an eraser / an answer / an ID card / an alarm clock / an actor / an actress /

an e-mail / an address / an event / an example / an opera / an houran old man / an interesting book / an

exciting sport / an action movie / an art lesson /

(2)定冠词：the

the egg

the plane

2.用法:

定冠词的用法：

(1)特指某(些)人或某(些)物： The ruler is on the desk.(2)复述上文提到的人或物：He has a sweater.The sweater is new.(3)谈话双方都知道的人或物：The boys aren’t at school.(4)在序数词前： John’s birthday is February the second.(5)用于固定词组中： in the morning / afternoon / evening

不用冠词的情况：

(1)专有名词前：China is a big country.(2)名词前有定语：this , that , my , your , some, any , no 等：

This is my baseball.(3)复数名词表示一类人和事：Monkeys can’t swim.They are teachers.(4)在节日，日期，月份，季节前：Today is Christmas Day.It’s Sunday.(5)一日三餐前：We have breakfast at 6:30.(6)球类棋类运动前：They often play football after class.He plays chess at home.* 但乐器前要用定冠词：I play the guitar very well.(7)学科名称前：My favorite subject is music.(8)在称呼或头衔的名词前：This is Mr Li.(9)固定词组中：at noon

at night

by bus

三、代词：人称代词，物主代词

人称代词物主代词

主格宾格

第一

人称单数 I(我)me my(我的)

复数 we(我们)us our(我们的)第二

人称单数 you(你)you your(你的)

复数 you(你们)you your(你们的)第三

人称单数 he(他)him his(他的)

she(她)her her(她的)

it(它)it its(它的)

复数 they(他们/她们/它们)them their(他们的/她们的/它们的)

四、形容词，副词：比较级，最高级

(一)、形容词的比较级

1、形容词比较级在句子中的运用：两个事物或人的比较用比较级，比较级后面一般带有单词than。比较级前面可以用more, a

little来修饰表示程度。than后的人称代词用主格(口语中可用宾格)。

2.形容词加er的规则：

⑴一般在词尾加er;

⑵以字母e 结尾，加r;

⑶以一个元音字母和一个辅音字母结尾，应双写末尾的辅音字母，再加er;

⑷以“辅音字母+y”结尾，先把y变i，再加er。

3.不规则形容词比较级：

good-better, beautiful-more beautiful

(二)副词的比较级

1.形容词与副词的区别(有be用形，有形用be;有动用副，有副用动)

⑴在句子中形容词一般处于名词之前或be动词之后

⑵副词在句子中最常见的是处于实义动词之后

2.副词比较级的变化规则基本与形容词比较级相同(不规则变化：well-better, far-farther)

五数词：基数词，序数词

一、基数词

(1)1-20

one，two，three，four，five，six，seven，eight，nine，ten，eleven，twelve，thirteen，fourteen，fifteen，sixteen，seventeen，eighteen，nineteen，twenty

(2)21-99 先说“几十”，再说“几”，中间加连字符。

23→twenty-three，34→thirty-four，45→forty—five，56→fifty-six，67→sixty-seven，78→seventy-eight，89→ eighty-nine，91→ninety-one

(3)101—999先说“几百”，再加and，再加末两位数或末位数;

586→five hundred and eighty-six，803→eight hundred and three

(4)l，000以上，先从右往左数，每三位数加一个“，”，第一个“，”前为thousand.第二个“，”前为million，第三个“，”前为billion

1，001→one thousand and one

18，423→eighteen thousand，four hundred and twenty-three

6，260，309→six million two hundred and sixty thousand three hundred and nine

750，000，000，000→seven hundred and fifty billion

二、序数词

(1)一般在基数词后加th

eg.four→fourth，thirteen→thirteenth

(2)不规则变化

one→first，two→second，three→third，five→fifth，eight→eighth，nine→ninth，twelve—twelfth

(3)以y结尾的十位整数，变y为ie再加th

twenty→twentieth，forty→fortieth，ninety→ninetieth

(4)从二十一后的“几十几”直至“几百几十几”或“几千几百几十几”只将个位的基数词变为序数词。

twenty-first，two hundred and forty-fifth

基数词转为序数词的口诀：

基变序，有规律，词尾加上-th.一，二，三，特殊记，词尾字母t,d,d.八去t,九去e, ve要用f替。

ty将y变成i，th前面有个e.若是碰到几十几，前用基来后用序。

六、介词：常用介词：in, on, at, behind等

1.at表示时间概念的某一个点。(在某时刻、时间、阶段等)。

at 1：00(dawn，midnight，noon)在一点钟(黎明、午夜、中午)

2.on

1)表示具体日期。

注：(1)关于“在周末”的几种表示法：

at(on)the weekend在周末---特指

at(on)weekends在周末---泛指

over the weekend在整个周末

during the weekend在周末期间

(2)在圣诞节，应说at Christmas而不说on Christmas

2)在(刚„„)的时候。

On reaching the city he called up his parents.一到城里他就给父母打了一个电话。

3.in

1)表示“时段”、“时期”，在多数情况下可以和during互换，前者强调对比，后者强调持续。in(during)1988(December，the 20th century)在一九八八年(十二月、二十世纪)

七、动词：动词的四种时态：

(1)一般现在时：

一般现在时的构成

1.be动词：主语+be(am, is, are)+其它。如： I am a boy.我是一个男孩。

2.行为动词：主语+行为动词(+其它)。如：

We study English.我们学习英语。

当主语为第三人称单数(he, she, it)时，要在动词后加“-s”或“-es”。如：Mary likes Chinese.玛丽喜欢汉语。

动词+s的变化规则

1.一般情况下，直接加-s，如：cook-cooks, milk-milks

2.以s.x.sh.ch.o结尾，加-es，如：guess-guesses, wash-washes, watch-watches, go-goes

3.以“辅音字母+y”结尾，变y为i, 再加-es，如：study-studies

(2)一般过去时:

动词过去式详解动词的过去式的构成规则有：

A、规则动词

①一般直接在动词的后面加ed：如 worked , learned , cleaned , visited

② 以e结尾的动词直接加d：如 lived , danced , used

③以辅音字母加y结尾的动词要改y为i再加ed(此类动词较少)如 study – studied carry – carried worry –

worried(注意play、stay不是辅音字母加y,所以不属于此类)

④双写最后一个字母(此类动词较少)如 stopped

B、不规则动词(此类词并无规则，须熟记)小学阶段要记住以下动词的原形和过去式：sing – sang , eat – ate ，see – saw , have – had , do – did , go – went , take – took , buy – bought , get – got , read – read ,fly – flew , am/is – was ，are – were , say – said , leave – left , swim – swam , tell – told , draw – drew , come – came , lose

– lost , find – found , drink – drank , hurt – hurt , feel – felt

(3)一般将来时：

基本结构：①be going to + do;

②will+ do.be going to = will

I am going to go swimming tomorrow(明天).= I will go swimming tomorrow.(4)现在进行时: am,is,are+动词现在分词

动词现在分词详解动词的ing形式的构成规则：

①一般的直接在后面加上ing , 如doing , going , working , singing , eating

②以e 结尾的动词，要先去e再加ing，如having , writing

③双写最后一个字母的(此类动词极少)有：running , swimming , sitting , getting

第三部分：句法

1.陈述句

(1)肯定句：是指用肯定的语气来陈述的句子，如：I’m a student.She is a doctor.He works in a hospital.There are four fans in our classroom.He will eat lunch at 12:00.I watched TV yesterday evening.(2)、否定句：含有否定词或表示否定意义词的句子，如：I’m not a student.She is not(isn’t)a doctor.He does not(doesn’t)work in a hospital.There are not(aren’t)four fans in our classroom.He will not(won’t)eat lunch at 12:00.I did not(didn’t)watch TV yesterday evening.2.疑问句

一般疑问句：是指询问事实的句子，此类句子必须用“yes”，或“no”来回答。

特殊疑问句：以特殊疑问词(what , where , who , which , when , whose , why , how等)开头引导的句子。此类句子应该

问什么就答什么，不能用“yes、no”来回答。

3.There be句型

There be 句型与have, has的区别

1、There be 句型表示：在某地有某物(或人)x kb 1.c om

2、在there be 句型中，主语是单数，be 动词用is;主语是复数，be 动词用are;如有几件物品，be 动词根据最*近be 动

词的那个名词决定。

3、there be 句型的否定句在be 动词后加not , 一般疑问句把be 动词调到句首。

4、there be句型与have(has)的区别：there be 表示在某地有某物(或人);have(has)表示某人拥有某物。

5、some 和any 在there be 句型中的运用：some 用于肯定句，any 用于否定句或疑问句。

6、and 和or 在there be句型中的运用：and 用于肯定句，or 用于否定句或疑问句。

7、针对数量提问的特殊疑问句的基本结构是：

How many +

名词复数 + are there + 介词短语?

How much + 不可数名词 + is there + 介词短语?

8、针对主语提问的特殊疑问句的基本结构是：

What’s + 介词短语?

第四篇：2018年大学英语四级语法精要

大学英语四级语法精要

Ⅰ动词(时态,语态,用法,省略,一致性等)1.时态

1)现在完成进行时态(have/has been +-ing 分词构成): 动作或状态从过去某时开始,继续到现在,可能继续下去,也可能刚刚结束.I’ve been writing letters for an hour.I’ve been sitting in the garden.2)过去完成进行时(由had been + ing分词构成): 过去某个时刻以前一直在进行的动作

I’d been working for some time when he called.We had been waiting for her for two hours by the time she came.3)将来完成进行时: 将来某个时刻以前一直在进行的动作.By next summer, he will have been working here for twenty years.In another month’s time she’ll have been studying here for three years.4)将来完成时(由shall/will have + 过去分词构成): 将来某时会业已发生的事.I shall have finished this one before lunch.They’ll have hit the year’s target by the end of October.2.语态

1)可以有两种被动结构的类型,例如: He was said to be jealous of her success.It was said that he was jealous of her success.能同时适用于上述两个句型的主动词通常都是表示“估计”,“相信”等意义的动

词,常

见的有assume,believe,expect,fear,feel,know,presume,report,say,suppose,understand等.It is supposed that the ship has been sunk.The ship is supposed to have been sunk.担当be supposed to 与不定式的一般形式搭配时往往表示不同的意义.例如: Why are you driving so fast in this area? You are supposed to know the speed to know the speed limit.(你应该晓得速度限制)

2)双宾语及宾补结构的被动语态

a)双宾语结构的被动语态: 双宾语结构变为被动语态时,可以把主动结构中的一个宾语变为主语,另一个宾语仍然保留在谓语后面,但多数是把间接宾语变为主语.He was asked a number of questions at the press conference.Two days were allowed them for making the necessary preparations.b)宾补结构的被动语态:

She was called Big Sister by everybody.Then he was made a squad leader.He was considered quite qualified for the job.The room was always kept clean and tidy.3.短语动词 1)Vi + adv The plane took off two hours late.2)Vi + prep They looked round the Cathedral.3)Vi + prep(有被动语态)She’s looking after her sister’s children.The children were always well looked after.4)Vi + adv + prep I began to look forward to their visits.5)Vt + O + adv Some women choose to stay at home and bring up their children.The children were brought up by their mother.They took him on.6)Vt + adv + O(无被动语态)I am trying to give up smoking.7)Vt + O + prep We talked Donald into agreement.4.省略

1)在以as, than, when, if, unless等引导的从句中的省略: 在有些状语从句中,如果谓语包含有动词be,主语又和主句的主语一致a),或者主语是it b),就常常可以把从句中的主语和谓语的一部分(特别是动词be)省略掉.a)Look out for cars when crossing the street.When taken according to the directions, the drug has no side effects.While there he joined in voluntary labour on a project.Although not yet six months old, she was able to walk without support.If not well managed, irrigation can be harmful.Though reduced in numbers, they gained in fighting capacity.This viewpoint, however understandable, is wrong.Enemies, once discovered, were tightly encircled and completely wiped out.She hurriedly left the room as though/if angry.She worked extremely hard though still rather poor in health.Fill in the application as instructed.Whenever known, such facts should be reported.The documents will be returned as soon as signed.He said that no acrobat could ever perform those daring feats unless trained very young.Once having made a promise, you should keep it.b)If necessary I’ll have the letter duplicated.Fill in the blanks with articles where(ver)necessary.If possible, I should like to have two copies of it.As scheduled, they met on January 20 at the Chinese Embassy.2）在以than a)或 as b)引起的从句中,常会有一些成分省略.a)He told me not to use more material than(it is)necessary.We should think more of the collective than of ourselves.b)They worked with as much enthusiasm as young people(did).He is now a vice-manager, but still often works in the kitchen as before.Their training is free, as is all education.We will, as always, stand on your side.3）错误的省略

His life is as fully committed to books as anyone I know.While standing there in her nightgown, two bullets struck the wall beside her.5.一致

1)如果主语是单数,尽管后面跟有with, together with, as well as, as much as, no less than, more than等引导的短语,谓语动词仍旧用单数形式.Terry, along with her friend, goes skating every Saturday.An expert, together with some assistants, was sent to help in this work.The captain, as well as the coaches, was disappointed in the team.2)代词作主语时的一致

a)each, either, neither和由some, any, no, every构成的复合代词,都作单数看待.Each of us has something to say.Is everybody ready? Somebody is using the phone.Neither of us has gone through regular training.Has either of them told you? b)some, few, both, many 等作复数

c)some 可后接复数,也可接单数,表示某一.none作复数看待时较多,但也有时作单数看待,主要看说话人脑中联系想到的是复数还是单数概念, 但none 在代表不可数的东西时总是看作单数: None of the books are easy enough for us None of us seem to have thought of it.None(= not a single one)of us has got a camera.None(= nobody)has felt it more keenly than she did.None of this worries me.all 和most 可后接复数,也可接不可数名词(all of the„, most of the „), 动词用单数.3)由and 或 both„ and 连接名词词组时, 后用复数;由not only„but(also), either„or, neither„nor或 or 连接的并列主语, 谓语通常和最邻近的主语一致.Not only the switches but also the old writing has been changed.My sister or my brother is likely to be at home.Either you or Mr Yang is to do the work.Neither my wife nor I myself am able to persuade my daughter to change her mind.如果一个句子是由there 或here引导, 而主语又不止一个, 谓语通常也和最邻近的那个主语一致.There was carved in the board a dragon and a phoenix.Here is a pen, a few envelopes and some paper for you.4)people, police, cattle, poultry(家禽), militia(民兵)等通常都用作复数.Cattle are grazing on the pasture.The police are looking for him.有些集体名词有时作单数看待, 有时作复数看待, 主要根据意思来决定.His family isn’t very large.His family are all music lovers.The committee meets twice a month.The committee are pided in opinion.The audience was enormous.The audience were greatly moved at the words.有些名词单复数同形, 可根据意思决定谓语动词的数: This new series is beginning next month.These new series are beginning next month.This species is now extinct.These species are now extinct.5)表示时间, 重量, 长度, 价值等的名词, 尽管仍是复数形式, 如果作整体看待, 动词也可用单数形式(当然用复数动词也是可以的): Three weeks was allowed for making the necessary preparations.One hundred li was covered in a single night.6)其他问题

a)书名, 国家名用单数: Tales from Shakespeare is a book by Charles Lamb.b)学科名, 如mathematics, economics用单数.c)many a 或more than one 所修饰的词作主语时, 谓语动词多用单数形式: Many a person has had that kind of experience.More than one person has involved in the case.a number of 后接复数, the number of后接单数: A number of books have been published on the subject.The number of books published on the subject is simply amazing.d)one of those 后用单数.在“one of + 复数名词 +关系分句”结构中，关系分句中谓语动词的单复数形式在一般情况下有两形式，一是根据先行词采用复数形式：

Joan is one of those people who go out of their way to be helpful.当one 之前友the only 等限定词和修饰语时，关系分句谓语动词根据one 而定，即采用单数形式：

He is the only one of those boys who is willing to take on another assignment.Ⅱ 非谓语动词

1.不定式

1)形式 主动形式 被动形式

to do to be done to have done to have been done to be doing

一般式 完成式 进行式

完成进行式 to have been doing

a)完成式: 不定式的一般形式所表示的动作, 通常与主要谓语表示的动作(状态)同时(或几乎同时)发生, 或是在它之后发生.假如不定式所表示的动作, 在谓语所表示的动作(状态)之前发生, 就要用不定式的完成式.I am glad to have seen your mother(= I am glad I have seen your mother).(比较: I am glad to see you.)He is said to have written a new book about workers.He pretended not to have seen me.b)进行式: 如果主要谓语表示的动作(状态)发生时, 不定式表示的动作正在进行, 这时要用不定式的进行式.You are not supposed to be working.You haven’t quite recovered yet.We didn’t expect you to be waiting for us here.He pretended to be listening attentively.c)完成进行式: 在谓语所表示的时间之前一直进行的动作, 就要用不定式的完成进行式.The struggle was known to have been going for twenty years.We are happy to have been working with you.d)被动式: 当不定式的逻辑上的主语是不定式所表示的动作的承受者时, 不定式一般要用被动形式.It is an honour for me to be asked to speak here.She hated to be flattered.He wanted the letter to be typed at once.This is bound to be found out.There are a lot of things to be done.She was too young to be assigned such work.2)功用: 不定式可以作主语(a), 宾语(b), 表语(c), 定语(d)或是状语(e).a.To scold her would not be just.b.We are planning to build a reservoir here.c.One of our main tasks now is to mechanize agriculture.d.Do you have anything to declare? e.We have come to learn from you.3)不带to 的不定式:

a)在“动词+ 宾语+不定式”结构中, 如果动词是表示感觉意义的see, hear, watch, smell, feel, notice等, 或是表示“致使”意义的 have, make, let等, 其后的不定式结构不带to.John made her tell him everything.这类结构转换为被动语态时, 后面的不带to 的不定式一般还原为带to 的不定式.She was made to tell him everything.b)在 had better, had best, would rather, would sooner, would just as soon, might(just)as well, cannot but 等搭配之后, 动词不定式也不带to.I’d rather not have eggs and bacon for breakfast.They cannot but accept his term.c)在make do, make believe, let drop, let fall, let fly, let slip, let drive, let go of, let there be, hear say, hear tell, leave go of等固定搭配中, 用不带to的动词不定式.John let fly a torrent of abuse at me.I’ve heard tell of him.d)在动词help(或help +宾语)之后可用不带to的不定式, 也可用带to的不定式.Can I help(to)lift this heavy box?

e)在介词except, but 之后, 如果其前有动词do的某种形式, 不定式一般不带to, 反之带to.There is nothing to do except wait till it stops raining.Smith will do anything but work on a farm.There’s no choice but to wait till it stops raining.f)连词 rather than, sooner than 置于句首时, 其后的不定式不带to.Rather than push the book back as he wanted to do, he forced himself to pick it up.出现在句中其他位置时, 其后的不定式有时带to, 有时不带to.He decided to write rather than telephone.The manager believes it is important to invest in new machinery rather than to increase wages.g)用作补语的动词不定式, 如果主语是由“all + 关系分句”，“thing +关系分句”，“what分句”或“thing +不定式结构”等构成，并带有do的某种形式，这时，作为主语补语的不定式可以省to，也可以不省.What he will do is(to)spoil the whole thing.All you do now is complete the form The only thing I can do now is go on by myself.The thing to do now is clear up this mess.The least I can do is drive everybody else closer to the issue.4)不定式的其他用法

a)too„to 结构通常表示否定意义: She was too young to understand all that.enough„to结构则表示肯定意义: She was not old enough to understand all that.not too, but too, all too, only too等和不定式连用时,不定式一般不表示否定意义: He’s only too pleased to help her.so„as(to)这种结构也可用不定式作状语: Be so kind as to drop in some time when you are free.b)如果要说明不定是表示的动作是谁做的, 可以在不定式前加一个for引起的短语: It is not hard for one to do a bit of good.It is a great honour for us to be present at this rally.在以某些形容词(如 kind, good, nice, wise, unwise, clever, silly, wrong, right, foolish, stupid, careless, considerate, rude, naughty, impolite等)作表语时, 不定式前可加一个of引起的短语, 来说明不定式指的是谁的情况: It’s kind of you to think so much of us.(It is)Awfully good of you to come and meet us.It’s very nice of you to be so considerate.It’s unwise of them to turn down the proposal.2.V+ing形式(现在分词及动名词)1)形式

a)完成式: 如果要表示动名词代表的动作在谓语所表示的动作之前发生, 通常用动名词的完成形式.He didn’t mention having met me.I regret not having taken her advice.在某些动词后(或成语中), 常用(或可以用)动名词的一般形式, 尽管动作是在谓语所表示的动作之前发生的.Excuse me for coming late.I don’t remember ever seeing him anywhere.现在分词的完成式主要用在状语中, 表示这动作在谓语所表示的动作之前发生.Having been there many times, he offered to be our guide.Having found the cause, they were able to propose a remedy.另外, 独立结构也可用现在分词的完成形式.The guests having left, they resumed their discussion.The children, having eating their fill, were allowed to leave the table.b)被动式: 当一个动名词逻辑上的主语所表示的是这动作的对象时, 动名词一般要用被动形式.His being neglected by the host added to his uneasiness.He couldn’t bear being made fun of like that.但要注意, 在want, need, deserve, require 等动词后, 尽管表示的是被动的意思, 却用动名词的主动形式.My pen needs filling.The point deserves mentioning.This problem requires studying with great care.在worth这个形容词后情形也是这样.Her method is worth trying.现在分词的被动式可以用来作定语, 宾语补足语, 状语及用于独立结构中.This is one of the experiments being carried on in our laboratory.You’ll find the topic being discussed everywhere.Being asked to give a performance, she couldn’t very well refuse.These are sold at reduced prices, the defects always being pointed out to the customers.c)完成被动式: 如果表示的动作在谓语表示的动作之前发生, 有时需要用动名词的完成被动式.I don’t remember having ever been given a chance to try this method.但在多数情况下都避免使用这一形式, 而用一般被动形式代替, 以免句子显得累赘.现在分词的完成被动式一般用来作状语或用于独立结构中.Having been given such a good chance, how could she let it slip away? The decision having been made, the next problem was how to make a good plan.All the compositions having been written and collected, the teacher sent the students home.2)句法功用

a)作主语: Walking is good exercise.It’s nice talking to you.There is no denying the fact that the new method has greatly raised labour productivity.b)作宾语: Your shoes need polishing.You mustn’t delay sending the tractors over.He avoided giving us a definite answer.c)作介词宾语: 动名词作介词宾语用的时候最多.它常可以用在某些成语后面, 常见的有: insist on, persist in, think of, dream of, object to, suspect„of, accuse„of, charge„with, hear of, approve of, prevent„from, keep„from, stop„from, refrain from, be engaged in, look forward to, opposed to, depend on, thank…for, feel like, excuse…for, aim at, devote…to, set about, spend…in, get(be)used to, be fond of, be capable of, be afraid of, be tired of, be sick of, succeed in, be interested in, feel(be)ashamed of, be proud of, be keen on, be responsible for.d)作表语: The real problem is getting to know the needs of the people.动名词和不定式都可以作主语或表语.一般说来, 在表示抽象的一般的行为时多用动名词;在表示具体某词动作, 特别是将来的动作时, 多用不定式.e)作宾语补足语: 分词可以在see, hear, notice, watch, feel, find, keep, get, have等动词后作宾语补足语.The words immediately set us all laughing.Once we caught him dozing off in class.His remark left me wondering what he was driving at.在see, hear, feel, watch, notice等动词后, 及可用现在分词, 也可用不定式构成宾语补足语.用现在分词时, 表示动作正在发生, 用不定式时表示动作发生了.Do you hear someone knocking at the door? Yes, I did.I heard him knock three times.f)作状语: 现在分词作状语时, 通常都表示主语正在进行的另一动作, 来对谓语表示的主要动作加以修饰或作为陪衬.I ran out of the house shouting.I got home, feeling very tired.Driving to Chicago that night, I was struck by a sudden thought.现在分词短语有时可以用作状语表示原因, 相当于一个表示原因的状语从句.Not knowing her address, we couldn’t get in touch with her.Seeing nobody at home, she decided to leave them a note.Having already seen the film twice, she didn’t want to go to the cinema.现在分词短语有时可用作时间状语, 相当于when引起的从句: Seeing those pictures, he couldn’t help thinking of those memorable days they spent together.如果两个动作是完全同时发生的, 多用when 或while加分词这种结构.Be careful when crossing the street.When leaving the airport, they waved again and again to us.She got to know them while attending a conference in Beijing.3)前面带有代词或名词的动名词结构: 一个动名词前面可以加一个物主代词(或名词的所有格结构), 来表示这个动名词逻辑上的主语.Their coming to help was a great encouragement to us.Our sole worry is your relying too much on yourself.Do you mind my reading your paper? They insisted on my staying there for supper.如果不是在句子开头, 这个结构常常可以用名词的普通格(或人称代词宾格), 这比用所有格更自然一些.I don’t mind him going.She hates people losing their temper.4)只能用动名词作宾语的动词: suggest, finish, avoid, stop, can’t help, mind, admit, enjoy, leave off, require, postpone, put off, delay, practise, fancy, excuse, pardon, advise, consider, deny, endure, escape, miss

5)既可用动名词, 也可用不定式作宾语的动词: love, like, hate, dislike, begin, start, continue, intend, attempt, can’t bear, propose, want, need, remember, forget, regret, neglect, try, deserve, can’t afford等.有时两种结构之间意义差别不大, 有时却有不同的意思.在remember, regret, want, try等词后差别是比较明显的.I remember seeing her once somewhere.I must remember to take my notebooks with me.I regret not having accepted your advice.I regret to say I haven’t given you enough help.She doesn’t want(need)to come.The house wants(needs)cleaning.We must try to get everything done in time.Let’s try doing the work some other way.6)悬垂修饰: 分词作状语时, 表示的必须是主语的一个动作或状态.Walking through the park, we saw a lot of flowers.(walking是we的动作, 正确)Walking through the park, the flowers looked very beautiful.(错误)Standing on the tower, we could see the whole city.(正确)Standing on the tower, the whole village could be seen.(错误)3.分词

1)意义: 过去分词通常来自及物动词, 带有被动意义和完成意义;而现在分词有的来自及物动词, 有的来自不及物动词, 通常带有主动意义和未完成意义.frozen food

a freezing wind a boring journey a losing battle a bored traveller a lost cause

a conquered army a conquering army a finished article the spoken word a closed shop a recorded talk

来自不及物动词的过去分词很少能单独用作前置修饰语, 能作这样用的仅限于下面几个词, 仅表示完成意义, 不表示被动意义.the risen sun, fallen leaves, faded/withered flowers, returned students，the last finishing touch a speaking bird the closing hour a recording machine retired workers, departed friends, escaped prisoners, the vanished jewels, newly-arrived visitors 用作后置修饰语的过去分词一般都带有修饰语或其他成分, 在意义上相当于关系分句.Most of the people invited to the reception were old friends.2)句法作用

a)作定语: distinguished guest 贵宾, unknown heroes 无名英雄, armed forces武装部队, canned food罐头食品, boiled water开水, steamed bread馒头, stricken area灾区

分词还可构成合成词作定语: simply-furnished room陈设简单的房间, clear-cut answer明确的答复, highly-developed industry高度发展的工业, heartfelt thanks衷心的感谢, hand-made goods手工制品, man-made satellite人造卫星

b)作补足语: 可以带过去分词作宾语补足语的动词有: see, hear, feel, find, think等表示感觉和心理状态的动词.I saw the students assembled in the hall.We found her greatly changed.make, get, have, keep等表示”致使”意义的动词: I have my hair cut every ten days.She got her bad tooth pulled out.Please keep us informed of the latest developments.like, want, wish, order等表示希望, 要求, 命令等意义的动词: I don’t want any of you(to be)involved in the scandal.He won’t like such questions(to be)discussed at the meeting.c)过去分词短语常用作状语, 修饰谓语, 很多都说明动作发生的背景或情况.Guided by these principles, they went on with the work, Delighted with her work, they made her the general manager.过去分词短语也可作状语表示原因, 相当于一个表示原因的状语从句.Influenced by his example, they performed countless good deeds.有时也可说明动作发生的时间, 相当于一个表示时间的状语从句.This method, tried in areas near Shanghai, resulted in a marked rise in total production.间或也可表示一个假设的情况, 相当于一个条件从句.Given closer analysis, we can see this is totally wrong.偶尔也可用来代替一个“让步”状语从句.Picked 20 years a year, it grows tired only after 40 or 50 years.d)独立结构: 在用分词短语作状语时, 它逻辑上的主语一般必须与句子的主语一.致.但有时它也可以有自己独立的逻辑上的主语, 这种结构称为独立结构, 一般表示一种伴随的动作或情况.He rushed into the room, his face covered with sweat.有时可以表示时间: Late that autumn, his work finished, he prepared to return to his institute.表示原因: Her eyes dimmed with tears, she did not see him enter.条件: All things considered, her paper is of greater value than yours.Ⅲ 虚拟语气

1.that从居中:

1)wish, would rather(sooner), had better: I wish I were as strong as you.I wish I had paid more attention to our pronunciation.I wish I remembered the address.I would rather they came tomorrow(you had gone there too).I had rather(that)you told him than I did.2)suggest, order, demand, propose, command, request, desire, insist 等动词后的宾语从句: The commander ordered that all civilians(should)be evacuated.He asked that he be given an opportunity to try.She urged that he write and accept the post.3)it is desired, it is suggested, it is requested, it was ordered, it was proposed, it is necessary, it is important, it has been decided 等结构后的主语从句中.It was arranged that they leave the following week It will be better that we meet some other time.4)suggestion, motion, proposal, order, recommendations, plan, idea等后面的表语从句和同位语从句: His sole requirement is(was)that thy system be adjusted.2.在某些句型中

1)it is time that It is time that we went(或should go)to bed.It is high time we(should)put an end to this controversy.2)as if(though)引起的从句: They talked(are talking)as if they had been friends for years.It seems as if it was(were)spring today.He acts(acted)as if(though)he were(was)an expert.3)以lest, for fear that 和 in case 引起的从句(这时谓语多用 should +动词原形): He took his raincoat with him lest it should rain.He put his coat over the child for fear that(或lest)he should catch cold.I’ll keep a seat for you in case you should need it.4)以whatever, whoever, no matter what这类代词或词组引起的从句(这时, 谓语多用may加动词原形构成): Whatever defects he may have, he is an honest man.Come what may, we will go ahead.干下去.I accept that he is old and frail;be that as it may, he’s still a good politician.我承认他年老体衰, 然而尽管如此, 它仍是优秀的政治家.3.条件句

1)虚拟条件句主要有下面两类:

a)表示现在及将来情况(表示纯然假设或实现的可能性不大的情况): 谓语主要形式如下(be多用were这个形式): 从句 主句 过去式 would + 动词原形

不管发生什么情况, 我们都要If I were you, I wouldn’t lose heart.How nice it would be if you could stay a bit longer.b)表示过去情况的虚拟条件句(与事实完全相反的假设情况), 谓语主要形式如下:

从句 主句 had + 过去分词 would have + 过去分词

She would have come if we had invited her.If I hadn’t taken your advice, I would have made a bad mistake, You wouldn’t have caught cold if you had put on more clothes.2)有时候, 条件从句表示的动作和主句表示的动作, 发生的时间是不一致的(如一个是过去发生的, 一个是现在发生的).这时, 动词的形式要根据表示的时间来调整.这种句子可以称为错综时间条件句.If he had received six more votes, he would be our chairman now.If we hadn’t got everything ready by now, we should be having a terrible time tomorrow.3)有时假设的情况并不以条件从句表示, 而是通过一个介词短语来表示.Without music, the world would be a dull place.We could have done better under more favorable conditions.That would have been considered miraculous in the past.But for the storm, we should have arrived earlier.4)如果条件句从句中包含有 were, had, should 或could, 有时可把if省略掉, 并把were, had, should或could放在主语前面.Had we made adequate preparation, we might have succeeded.Should there be a flood, what should we do? Were it not for their assistance, we would be in serious difficulty.Ⅳ 介词

1.合成介词和复杂介词

1)合成介词: inside, into, onto, out of, outside, throughout, upon within, without

2)复杂介词: according to, along with, apart from, as for, as to, because of, by means of, in front of, in spite of, instead of, in accordance with, on account of, on behalf of, owing to, due to, together with, up to, with regard to, prior to等

2.介词在句末:

This is what he is interested in.Does everyone has a seat to sit on?

3.名词加介词(n + prep)1)某些名词之后要求用某些介词: solution to, faith in, glance at, need for 2)某些名词之前要求用某些介词: on one’s guard, at one’s request, in all probability, to my delight

4.动词加介词

1)Vi + prep: prevail on, appeal to, fall into, apply for, touch upon 2)Vt + O + prep: lay emphasis on, take advantage of等 3)Vi + adv + prep:

I don’t wish to break in on your thoughts.The family came up against fresh problems.You’re not telling me the whole story.You’re holding out on me.She got off with him soon after she began to work at the institution.4)Vt + O + adv +prep:

You shouldn’t take your resentment out on me.We shouldn’t put the shortage down to bad planning.5.形容词加介词

about---anxious, careful, careless, certain, considerate, enthusiastic, guilty, happy, mad, particular, sad, sure, timid, unhappy, etc at---awkward, bad, clever, disappointed, disgusted, good, marvellous, quick, skilful, skilled, useless, weak, etc for---convenient, eligible, grateful, homesick, hungry, necessary, noted, perfect, responsible, etc from---evident, exempt, inseparable, safe, tired, etc in---deficient, expert, liberal, quick, rich, successful, weak, etc of---apprehensive, characteristic, critical, destructive, envious, hard, inconsiderate, impatient, dependent, jealous, positive, scared, sensible, short, sick, suspicious, typical, worthy, etc on---dependent, keen, intent, etc to---acceptable, accessible, agreeable, alive, attentive, blind, comparable, courteous, deaf, destructive, essential, favourable, hostile, indifferent, married, obedient, parallel, preferable, related, responsible, sensitive, suitable, unjust, etc with---awkward, bored, careful, disappointed, generous, identical, ill, impatient, popular, sick, wrong, etc Ⅴ 连词 1.并列连词

1)表示意义的引申: and, both„and, not only„but(also), as well as, and „as well, neither„nor 2)表示选择: or, either„or 3)表示转折: but, while, whereas, yet, however/nevertheless(也可认为是副词)4)表示因果: for, so, therefore, hence 2.从属连词

1)表示时间: when, while, as, after, before, since, until(till), as soon as, once 2)表示原因: because, as, since, now that, seeing that 3)表示条件: if, unless, in case, provided(that), suppose, as long as, on condition(that)，4)表示其他关系:(al)though, than, as/so„as, lest, in order that, so„that

Ⅵ 定语从句

1.限制和非限制性定语从句: 限制性定语从句是名词词组不可缺少的一个组成部分, 去掉了会造成病句或意义不明确;非限制性定语从句属于补充说明性质, 去掉了不会影响主要意义, 通常用逗号与它的先行词分开.The boys who wanted to play football were disappointed when it rained.The boys, who wanted to play football, were disappointed when it rained.如果定语从句的先行词是专有名词, 或是带有形容词性物主代词(my, his, etc)或形容词性指示代词(this, that, etc)作限定词, 其后的定语从句通常都是非限制性的: Mary Smith, who is in the corner, wants to meet you.Her mother, who had long suffered form arthritis, died last night.All these books, which have been donated by visiting professors, are to be used by the postgraduates.在非限制性定语从句中只能用who/whom指人, 用which指物,通常不用that替代.My father, who had been on a visit to America, returned yesterday.All the books, which had pictures in them, were sent to the little girl.2.定语从句的引导词

1)that, who, whom: 非限制性定语从句, 如果修饰人, 一般用who, 有时用that(作主语时用who较多).如果关系代词在从句中作宾语, 就应当用宾格 whom 或that, 但在大多数情况下都可以省略掉, 在口语中可用who代替whom.Here is the man(whom)you’ve been looking for.He is a man(that)you can safely depend on.The people(who/that)you were talking to were Swedes.There are some people here who I want you to meet.但在介词后只能用whom: This is the man to whom I referred.但在口语中一般都把介词放到句子后面去, 这时可用that, 但省略时更多一些.Have you met the person about whom he was speaking? Have you met the person(that)he was speaking about

The girl to whom I spoke is my cousin.The girl(who/that)I spoke to is my cousin.2)限制性定语从句如果修饰“物”, 用关系代词that的时候较多, 也有时用which..当这个代词在从句中是用作宾语时, 在绝大多数情况下都是省略的, 特别是口语中(尤其是当被修饰的词是all, everything等词时): Ha