第三课时SectionA(GrammarFocus～3c)单元同步语法精讲最高级的用法在三者或三者以上进行比较时，要用最高级形式。最高级前要用定冠词the，后接由in、on等构成的表比较范围的短语。of后面一般接表示一群人或事物的代词或名词，in后面一般接表示单位或场所的名词。eg：Billisthetallestboyofus.比尔是我们中最高的男孩。Janehasthemostfriendsinourclass.简在我们班拥有的朋友最多。最高级的构成(1)规则变化a)一般情况下，单音节和部分双音节，在原级后加est，构成最高级。eg：long→longestclever→cleverestb)以字母e结尾的词，在原级后加st构成最高级。eg：nice→nicestcute→cutestc)以辅音字母＋y结尾的双音节，变y为i，再加est构成最高级。heavy→heaviestfriendly→friendliestd)重读闭音节的词尾只有一个辅音字母时，先双写这个辅音字母，再加est构成最高级。eg：big→biggestthin→thinnest②多音节和部分双音节形容词，在原级前加most构成最高级。eg：creative→mostcreativepopular→mostpopular(2)不规则变化有一部分形容词的最高级构成没有规律，称为不规则变化，我们应牢记。good/well→bestbad/ill→worstmany/much→mostlittle→leastfarfarthest/furthest单元同步语法强化训练一、用所给词的适当形式填空。1．John'sparentshavefourdaughters，andsheis____________(young)child.2．The________(cheap)thingsarenotusuallythebestones.3．LiLeisings________(good)inourclass.4．Johnnyoftenbuyshisclothes_________________(cheap)inherfamily.5．Thisbookis_______________________(interesting)ofthefive.theyoungestcheapestthebestthemostcheaplythemostinteresting二、单项选择。6．A100yearoldmanranamarathoninTorontoonSunday.Hebecamethe________persontocompletethelongdistancerunningintheworld.A．youngestB．bestC．biggestD．oldest7．Lucyisa(n)________student.Sheanswerstheteachers'question________inherclass.A．moreactive，moreactivelyB．active，moreactivelyC．moreactive，themostactivelyD．active，themostactively8．MoYanisoneof________writersintheworld.(2014，天津)A．famousB．morefamousC．mostfamousD．themostfamousDDD9．—IreallyliketowatchtheTVprogramIAMASINGER.—Me，too.It'soneofthe________TVprogramsI'veeverseen.(2014，宁波)A．leastboringB．leastinterestingC．mostboringD...
