高中Unit 2 Robots课文配套ppt课件

这是一份高中Unit 2 Robots课文配套ppt课件，共27页。PPT课件主要包含了不定式被动式讲与练，NOTICE，Exercise 等内容，欢迎下载使用。

不定式语法 不定式的时态和语态
不定式有时态和语态的变化，时态共四种，即一般式、完成式、进行式和完成进行式。语态分为主动语态和被动语态，如下表所示。
当动词不定式的逻辑主语是动词不定式所表示的动作的执行者时用主动语态；当动词不定式的逻辑主语是动词不定式所表达的动作的承受者时用被动语态。进行式和完成进行式没有被动语态。
   一、 不定式的被动形式有下列用法
1．作主语： It is an hnur fr me t be asked t speak here.2．作宾语： She asked t be sent t wrk in Xinjiang.
一 当不定式的逻辑主语是不定式所表示的动作的承受者时，不定式一般要采用被动形式。．
3．构成复合宾语： He wanted the letter t be typed at nce. She didn’t like herself t be praised like that.4．构成复合谓语： The bks are nt allwed t be taken ut f the rm.
5．作定语： Are yu ging t the meeting t be held in the teachers’ ffice?6．作状语： She was t yung t be assigned such wrk.
二、不定式有时还可以有完成式的被动式，在句中作主语、宾语、定语，或者构成复合宾语、复合谓语等，如：It is a gd thing fr him t have been criticized.（主语）She preferred t have been given heavier wrk t d. (宾语)）
He thught it an hnur t have been invited t the party. （复合宾语）The bk is said t have been translated int many languages. （复合谓语）She was the first wman t have been elected t such a pst. （定语）
三、不定式的主动形式表示被动
1．在there be结构中。例如： There is a lt f hmewrk t d．(也可用t be dne) There is n time t lse (t be lst).
2．在“n／prn + be + adj + t d”结构中。常用的形容词有easy，difficult，hard，impssible，nice，pleasant，light，heavy，interesting，imprtant，expensive，cheap， fit， dangerus等。
例如： He is hard t cnvince.He is an impssible persn t wrk with．
3.在“t—t d; enugh…t…”结构中。如：The prblem is t difficult t wrk ut (t be wrked ut)．The huse is big enugh t live in.
4．在“with+n+t d”结构中。例如： With nthing t d，he lay in bed． With s many exercises t d，I can‘t g t the cinema．
5．当不定式的逻辑主语在句中出现时。 例如： I have a letter t type tday． (I是t type的逻辑主语) D yu have anything t say? (yu是t say的逻辑主语)
6．当不定式隐含在fr sb t d结构中 时。例如： This is the best bk t read (=fr us／yu t read)． The imprtant thing t d is t lck the dr when we leave the huse．
7．一些作表语用的不定式的主动形式。 常见的这类动词有let(出租)，rent， hire，blame等。例如： The huse is t let． I felt l was t blame.
动词不定式主动语态形式的使用要比被动语态形式的使用普遍，有时（尤其在口语中）虽然意思上是被动的，也往往用主动语态形式来表示。 I have three mtrs t repair tday.The task is difficult t finish n time.
1. Having a trip abrad is certainly gd fr the ld cuple, but it remains____ whether they will enjy it. A. t see B. t be seen C. seeing D. seen
2. I hurried t the meeting hall, nly____ that the meeting had been put ff. A. t tell B. t be tld C. telling D. tld
3. D let yur mther knw all the truth, she appears____ everything. A. t tell B. t be tld C. t be telling D. t have been tld
4. Little Tm shuld lve____ t the theater this evening. A. t be taken B. t take C. being taken D. taking
5. It is said that plastics can be used t____ many things. Nw peple are used t____ plastics prducts. A. make; using B. making; using C. making; use D. make; use
6. With a lt f prblems____, the newly-elected president is having a hard time. A. settled B. settling C. t settle D. being settled
7. He___ and was made t repeat it. A. didn’t understand B. didn’t be understd C. wasn’t understand D. wasn’t understd
8. The pupils here____ all kinds f exercises every day in the past fur weeks. A. kept busy ding B. keep n ding C. have kept busy ding D. have been kept busy ding
9. Visitrs____ nt t tuch the exhibits. A. will request B. request C. are requesting D. are requested