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1、动词不定式,-By Bring English,肯定形式：(to)do 否定形式：not to do,作用：主语，宾语，表语，定语，补语，状语,一.作主语,1.To see is to believe.2.To finish so much homework in a day is impossible.3.It is impossible to finish so much homework in a day.4.It is difficult for us to learn English.5.It is kind of you to give me so much help.6.It i
2、s clever of him to leave that country.公式：It is adj.for sb to do sth.It is adj.of sb to do sth.,常用于 It is adj.for sb to do sth.句型的形容词：easy,difficult,hard,important,possible,impossible,necessary,unnecessary,interesting等。常用于 It is adj.of sb to do sth.句型的形容词：good,kind,nice,wise,clever,foolish,careful,ca
3、reless,mean,generous,polite,impolite等。,二.作表语,1.My wish is to be a doctor.2.His job is to teach.3.He seemed to have heard of something.,三.作宾语,1.I want to do it myself.2.He decided to leave his job.3.He refused to help her.4.I hope to visit Hainan again.只能接to do作宾语的动词有：afford,ask,learn,need,want,agree
4、,decide,hope,plan,be supposed to,be willing to,be afraid to,expect,help,offer,pretend,refuse,seek,manage,fail,只能接doing作宾语的动词有：,enjoy,mind,practice,stand,forbid,keep,allow,delay,admit,risk,miss,appreciate,consider,escape,put off,be good at,dream of,be interested in,succeed in doing,be busy in doing,b
5、e used to,look forward to,give up,pay attention to,可以接to do 或者doing作宾语的动词：,Stop to do,stop doing,mean to do,mean doing,try to do,try doing,remember/forget to do,remember/forget doing,go on to do/go on doingcontinue to do,continue doing,start/begin to do/doinglike/love/hate to do,like/love/hate doing
6、,四.作宾语补足语,1.We allow you to make your own decision.2.They dont allow us to wear jeans in school.3.We can ask the teachers to help.4.My mother wants me to drink milk every day.5.His father told him not to hang out.,注意以下结构：,forbid sb to do,send sb to do,allow sb to do,invite sb to do,cause sb to do,ex
7、pect sb to dohelp sb(to)do,lead sb to do,make sb do,let sb do,have sb dofind/see/watch sb dospend time doing,waste time doing,leave sb doing,find/see/watch sb doing,五.主语补足语,1.We are allowed to make our own choice.2.He was found to go into an internet bar.3.He was told to be quiet.4.She neednt be mad
8、e to study.5.The room was said to have been cleaned.,六.作定语,1.He is always the first to arrive at school and the last to leave.2.He is looking for a room to live in.3.She has no one to talk with.4.I have a lot of work to do.5.I need a pen to write with.,七.作状语,1.I am very glad to hear from you.(原因)2.I
9、n order to catch up with others,I have to study harder.(目的)3.He spoke more loudly to be heard.(目的)4.She was too excited to speak.(结果)5.I hurried to get there,only to find him out.(结果),网购要省钱，就用“返利宝典”http:/,功能简介：通过本平台进入淘宝、京东等500多家商 城购物，均有一定比例的返利。操作指南：将淘宝或天猫的商品地址链接复制粘贴到首页的返利搜索栏，查询返利，按指定通道去淘宝天猫购物即可。其它商城
10、的商品返利虽然无法直接查询，但只要通过本平台进入购买的，都有返利。站长QQ：786583668,八.作独立成分,1.To tell you the truth,I dont think the film is good.2.To be frank,you are lying.3.To make matters worse,it began to rain.4.It is a good idea,to be sure;but it is hard to practice.5.To be honest,6.To begin with,不定式的时态,一.一般式(to do)-表示不定式的动作发生在谓
11、语动词的动作之后 1.He has decided to give her some money.2.He is said to go abroad next month.二.进行式(to be doing)-表示不定式的动作通常与谓语动词的动作同时发生。1.He seemed to be reading.2.The teacher didnt expect me to be working at that time.,三.完成式(to have done)1）表示不定式的动作发生在谓语的动作之前。1.I am sorry to have kept you waiting.2.He happened to have seen the film.3.He is said to have been abroad.2).表示过去没有实现的期待或计划(hoped,wanted,wished,expected,planned,intended+to have done结构)。1.We planned to have finished it in two days.2.He wanted to have met you at the airport.,
