Unit1Knowyourself(GrammarB)bothbothBoth“”“可作形容词、代词或副词用，意思是两个、双”“”方、两个都。在句中可作主语、宾语或同位语。如：Bothareright.(主语)Ilikeboth.(宾语)Bothpencilsaremine.(同位语）三者呢？bothboth一、Both和bothof后都可接复数名词，构成名词词组。Both后的名词前可有定冠词、指示代词或物主代词作修饰限定，也可没有；bothof后的名词前却一定要有定冠词、指示代词或物主代词作修饰限定。both(thetheseboth(thethese，，her)childrenher)childrenbothofthe(thesebothofthe(these，，her)childrenher)children；；bothofchildrenbothofchildren。。√√××Bothof后可接人称代词宾格，both后则不可；但人称代词宾格后可接both。bothofus(youbothofus(you，，them)them)bothus(youbothus(you，，them)them)us(youus(you，，them)boththem)both√√√√××二、Both与动词连用时，大多数放在系动词be之后，其它动词之前。Hisparentsworkers.Theyreading.若句中谓语动词包含情态动词或助动词时，both大多放在第一个情态动词或助动词之后。Thebridgesbebuiltthisyear.kateandMarygonetoEngland.arebotharebothbothenjoybothenjoymustbothmustbothhavebothhaveboth三、Both可与and构成并列连词，连接两个性质相同并在句中作相同成分的并行结构。BothheandhisbrotheraregoodatEnglish.(连接两个主语)Shecanbothdanceandsing.Shecanbothdanceandsing.((连接两个谓语动词连接两个谓语动词))((连接两个表语连接两个表语))Maryisbothkindandbeautiful.Maryisbothkindandbeautiful.她能歌善舞。玛丽既友善又漂亮。both+名词复数ofthens/代词...and...作主语看作复数1.二个女孩都来自英国。2.科学和数学二门都很难。__________________________England._____________________________________England.Bothgirlsare/comefromBothofthegirlsare/comefrom______science______maths______hard.Bothandare3.Icanspeak______Chinese_____English.bothand四、含both的句子变为否定时，是将both改为neither。Bothoftheboysareclever.Bothoftheboysareclever.BothoftheboysarenotcleverBothoftheboysarenotclever..Neitheroftheboysareclever.Neitheroftheboysareclever.两个男孩都聪明。两个男孩都不聪明。并不是两个男孩都聪明(一个聪明一个愚笨)。不完全否定含both…and…的句子变为否定句时，将both…and…改为neither…nor..，连...
