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英语语法补充不定式
一、不定式有种身份名词、形容3词、副词肯定结构(+动词原形;)否定结构not to do~to do~to注意有些情况不定式省略肯定结构(不定式省略)to do~to>否定结构(不定式省略)1做名词not do~to•To deanmv room takes me two hours.不定式做主语,看作一件事,看做单数=Ittakes metwo hoursto deanmv room.不定式做主语,可以用代替I wantto read books.it不定式做宾语不定式做表语•His dreamis tobe ateacher.I wanthim toread不定式做宾补(宾补就是补充宾语一一宾语做什么)books.
2、做形容词放名词后吃的做I havesomething to eat.toeatI havenothing to do,todo的买东西的
3、做副It is a goodplace tobuv things.to buythings词放句子前或句子后(为了,因为,结果)为了因为I wentthere toreadbook.I amhappy tomeet you.结果
二、不定式在这I wenthome tofind housetidy anddean•些情况下省略to)使役动词(不定式省略)1make/have/let to(省略)=make sbdo sth=have sbdo sthto使某人做某事、让某人做某事Eg Hemakeme washmy clothes.他让我洗衣服)感官动词(三眼、两耳、一注意、一感觉)巫:看到2See sb某人经常做什么、看到某人做了什么(省略)I sawhim plavbasketball vesterdav.to)(省略)
三、不定式3help sbdo sthto=help sbtodosth做主语,看做单数,用it代替不定式做主语,看作一件事,看做To know vourself isdifficult.单数作主语时,用代替,真正的主语=It isdifficult toknowvourself.it放后面动名词动名词动词变成名词+ing,动名词=名词Cleinian mvroomtakesmetwohours.动名词做主语,看做一件事,用作单数reading动名词做宾语is beins•I likebooks.His dreama动名词做表teacher.语“疑问词+不定式”=名词常见的疑问词who,whom,what,which,is aproblem.whose^hen,where,how~Where tolive iS~~isaproblem.里是个问题句子=名词that+句子--可以做主语、宾语、表语1Thatthat+he livesin Beijingis goodnews forme.他居住在北京,对于我而言是个好消息句子•一做主语,叫做主语从句2Ithat+、think thathe isfriendlv-句子•一做宾语,叫做宾语从句注意that+宾语从句中可以省略3The troublethat、is thatwe needmoney.句子…•做表语,叫做表语从句that+。