高三英语_Unit2_《Robots》语法课件_新人教版选修7

6．当不定式隐含在for sb to do结构中 时。 例如： This is the best book to read (=for us／ you to read)． The important thing to do is to lock the door when we leave the house．
elected to such a post. （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 lot of homework to do． (也可用to be done) There is no time to lose (to be lost).
4. Little Tom should love____ to
the theater this evening.
A. A to be taken C. being taken B. to take
D. taking
5. It is said that plastics can be used
to____ many things. Now people
4. Allen had to call a taxi because the box was _______ to carry all the way home. (MET2003) A. much too heavy
B. too much heavy
C. heavy too much
D. too heavy much
1．作主语： It is an honour for me to be asked to speak here. 2．作宾语： She asked to be sent to work in Xinjiang.

3．构成复合宾语： He wanted the letter to be typed at once. She didn’t like herself to be praised like that. 4．构成复合谓语： The books are not allowed to be taken out of the room.
例如： With nothing to do，he lay in bed．
With so many exercises to do，I can‘t go
to the cinema．
5．当不定式的逻辑主语在句中出现时。 例如： I have a letter to type today． (I是to type的逻辑主语) Do you have anything to say? (you是to say的逻辑主语) 注意比较 Do you have anything to send?你有什么东西 要寄吗？(不定式to send动作执行者是you) Do you have anything to be sent?你有什么 （要我或别人）寄的吗？（不定式to be sent 动作执行者是已被省略的me或someone else)
三、不定式的主动形式表示被动
2．在“n／pron + be + adj + to do”结构中。 常用的形容词有easy，difficult，hard， impossible，nice，pleasant，light，heavy， interesting，important，expensive，cheap， fit， dangerous等。 例如： He is hard to convince. He is an impossible person to work with．
hard time.
A. settled
C. C to settle
B. settling
D. being settled
7. He___ and was made to repeat it.
A. didn’t understand B. didn’t be understood C. wasn’t understand D. D wasn’t understood
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 house is to let．
I felt l was to blame.
8.need/require/want表示“需要”时接to be done和接v.ing主动形式表达含义一致
我的车需要修理。
My car needs repairing.(=needs to be repaired)
9.通常在believe, suppose, say, report等动 词构成 的句子中可以进行主动语态到被动语 态以及被动语态和动词不定式的转换。 They say that Mark is sick in bed. =It is said that Mark is sick in bed. =Mark is said to be sick in bed.
NOTICE
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 motors to repair today.
The task is difficult to finish on time.
Exercise
are used to____ plastics products. A. A make; using B. making; using C. making; use D. make; use
6. With a lot of problems____, the
newly-elected president is having a
3.在“too…to do; enough…to…”结 构中。如： The problem is too difficult to work
out (to be worked out)．
The house is big enough to live in.
4．在“with+n+to do”结构中。
C. not making D. do not make
2. I’ve worked with children before, so I know what ______ in my new job. (MET2000) A. Expected B. to expect C. to be expecting D. expects 3. Having a trip abroad is certainly good for the old couples but it remains ______ whether they will enjoy it. (MET2001) A. to see B. seen C. seeing D. to be seen
2. I hurried to the meeting hall,
only____ that the meeting had been put off. A. to tell C. telling B. B to be told D. told
3. Do let your mother know all the truth, she appears____ everything. A. to tell B. to be told C. to be telling D. to have been told D
He thought it an honour to have been invited to the party. （复合宾语） The book is said to have been translated into many languages. （复合谓语）
She was the first woman to have been
Revision of The passive Infinitive
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。
语态
时态
一般式 完成式 进行式
主动语态
to do to have done to be doing
5．作定语： Are you going to the meeting to be held in the teachers’ office?
6．作状语：
She was too young to be assigned such work.
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 good thing for him to have been criticized.（主语） She preferred to have been given heavier work to do. (宾语)）
1. Having a trip abroad is certainly good for the old couple, but it remains____ whether they will enjoy it. A. to see C. seeing B. to be seen B D. seen
8. The pupils here____ all kinds of exercises every day in the past four weeks. A. kept busy doing B. keep on doing
C. have kept busy doing
D. D have been kept busy doing