选修7 Unit2 课件gammar[下学期]

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名称 选修7 Unit2 课件gammar[下学期]
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资源类型 教案
版本资源 人教版(新课程标准)
科目 英语
更新时间 2006-09-14 21:55:00

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课件20张PPT。Revision of The passive Infinitive不定式被动式讲与练2006-02-8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。不定式语法? 不定式的时态和语态 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。
1)现在时:一般现在时表示的动词,有时与谓语动词表示的动作同时发生,有时发生在谓语动词的动作之后。
He seems to know this.
I hope to see you again = I hope that I’ll see you again. 不定式语法? 不定式的时态和语态 2)完成时:表示的动作发生在谓语动词表示的动作之前。
I’m sorry to have given you so much trouble.
He seems to have caught a cold.
3)进行时:强调动作已在延续或动作正在进行。
They seem to be getting along well with their new jobs.
He seems to be eating something.不定式语法? 不定式的时态和语态 4)完成进行时:表示动作是在谓语动词所表示的动作之前就一直在进行。
They are said to have been collecting stamps for over twenty years.
He appears to have been waiting a long time.
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。???一、 不定式的被动形式有下列用法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.
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))
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 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). 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,fit,interesting,important,expensive,cheap,dangerous等。例如: He is hard to convince.
He is an impossible person to work with. 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。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) 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. 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 blameNOTICE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.The purpose of new technologies is to make life easier
________ it more difficult. (MET99)
A. not make B. not to make 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. to be seen C. seeing D. seen不定式与高考题4. Charles Babbage is generally considered _____the first computer. (MET1993)
A. to invent B. inventing
C. to have invented D. having invented
5. 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 much6. The boy wanted to ride his bicycle in the street, but his mother
told him ______. (MET95)
A. not to B. not to do C. not do it D. do not to
7. Little Jim should love _____ to the theatre this evening. (MET 92)
A. to be taken B. to take C. being taken D. taking
8.There are five pairs ___,but I'm at a loss which to buy.(1999上海高考) ?A. to be chosen?? B. to choose from? C. to choose? D. for choosing 9.____late in the afternoon, Bob turned off the alarm.
(2001年北京春季高考) ?A. To sleep? B. Sleeping? C. Sleep? D. Having sleep
10.With a lot of difficult problems ____,the newly-elected president is having a hard time.(2002年上海春季高考)
A. settled B. settling C. to settle D. being settled
11.She will tell us why she feels so strongly that each of us has a
role___in making the earth a better place to live.
(2003上海春季高考)
A. to have played B. to play C. to be played D. to be playing
12.In order to gain a bigger share in the international market, many state run companies are trying ___their products more competitive.
( 2002上海春季高考)
A. to make B. making C. to have made D. having made

13.The teacher asked us___so much noise. (2003北京春季高考)
A.don't make B. not make
C. not making D. not to make
14. All these gifts must be mailed immediately_______ in time for Christmas.(05年辽宁卷)
A. in order to have received
B. in order to receive
C.so as to be received
D. so as to be receiving 15. I would love _____ to the party last night but I had to work extra hours to finish a report.
A. to go B. having gone
C. going D. to have gone
16. Robert is said ____ abroad, but I don’t know what country he studied in.
A, to have studied B. to study
C. to be study D. to have been studying
17. It is said in Australia there is more land than the government knows ______. A. what to do with it B. what to do it with
C. what to do with  D. to do what with it
18. Quite a few people used to believe that disaster_____ if a
mirror was broken.   A. was sure of striking    B. was sure of having struck   C. was sure to be struck    D. was sure to strike
19. John was made_____ the truck for a week as a punishment.  A. to wash   B. washing   C. wash   D. to be washing
20. She reached the top of the hill and stopped_____ on a big
rock by the side of the path.  A. to have rested  B. resting  C. to rest     D. rest 21. Last summer I took a course on  A. how to make dresses      B. how dresses be made  C. how to be made dresses    D. how dresses to be made
22. The patient was warned ____ oily food after the operation.
A. to eat not B. eating not C. not to eat D. not eat
23. The flu is believed ________ by viruses that like to reproduce in the cells inside the human nose and throat. (04)
A. causing B. being caused
C. to be caused D. to have caused
That's allThanks!