课件20张PPT。InfinitiveSept 4,2008 一、动词不定式在句中起着名词、形容词和副词的作用, 在句中可作主语、宾语、表语、定语、状语及补足语。高考侧重考查其作宾语、定语、目的状语、表语的功能以及无to不定式的用法。 二、不定式的形式(以do为例)
1. to do
2. to be done
3. to be doing
4. to have done
5. to have been done
6. to have been doing
三、不定式的功能
1)To find a best friend is difficult.
2)To say something is one thing; to do it is another.
3)To see is to believe.
want, hope, wish, expect, pretend, plan, decide, wish, refuse, promise, expect, choose, manage, intend, offer, afford, demand.等动词后需接不定式作宾语。I want to go out for a walk.1. 作主语(subject)2. 作宾语(object) 3. 作表语 (predicative) 1)To see is to believe.
2)My wish is to go to college.
3)Our purpose is to build a harmonious society. 4. 作定语 (attribute) 1)He has no pen to write with.
2)There are five pairs of shoes to choose from.
3)I have some homework to do.
4)There is a lot of work to do ( to be done).
5)I have no choice to go abroad.
6)They never had a moment to rest.
不定式作定语时,如果与所修饰的名词之间是动宾关系,要用其主动式表被动意义,但在there be结构中用其主动式或被动式都可以。注意如果不定式中的动词是不及物动词,应加上适当的介词。但在time, place, way 后的不定式省略介词。
以上例句都表示“有……要……”,如果不表此概念,则表被动且发生在将来,应用不定式的被动式,如:
7) The homework to be done tomorrow is easy.
8) ----Jack, I’m going to Shanghai next week. Do you have anything to be taken to your mother? 1) Dad arranged some games to surprise me. (目的)
2)To go abroad, he is working hard at English. (目的)
4) He smiled to think of his clever plan.(原因)
5) I was surprised to find my former English teacher. (原因)
6) I hurried to the post office, only to find it closed. (结果)
7) You are so kind as to help me. (结果)
8) He was such a fool as to believe his lies.(结果)
5. 作状语(adverbial)注意句型 S + be + adj. + to do.(不定式的主动式表被动意义)
Mount Tai is difficult to climb. (结果) 6. 作宾语补足语 (或主语补足语) 1)He told me to get some water.
2)The doctor warned the patient not to smoke.
3)The patient was warned not to smoke. 四、使用不定式应注意的问题
not to do
1) 5看2听1感觉,make、have和let, 主动语态不用to,被动语态to跟着。
但5看2听1感觉后的动作表正在进行时,用doing。 2. 无to不定式(bare infinitive)的应用 1. 不定式的否定式
A. Liu Hulan would rather die than give in.
B. Why not write an E-mail to him.
A. I decided to write rather than ring.
B. She preferred to go with us rather than stay behind.
C. We have nothing to do but wait at present.
D. We do nothing but / except go all out.
3)在rather than,than, but, except, 后2) 在would rather,had better, 及why后 但but 及except前无do时,则其后用有to不定式。
E. have no choice but / except to do sth.
F. He seldom comes except to ask me for money.
G. He hardly remembered anything but to know his father’s name.
A) He told me to go and get some water.
B) Do you want to go shopping or see a film?
C) To go to college and to go to work in the countryside are both glorious.
D) To go abroad or to stay home is up to you. 4) 在and, or 后 但and, or 连接两个不定式表对比意义,则两个不定式都要用to
What he wants to do is help the disabled.
1) It + be + adj. + for sb. to do sth.
2) It + be + adj. + of sb. To do sth.
It is kind / clever / foolish / stupid / silly / mean / generous / rude / cruel / careless / good / honest / lazy / nice / wise / brave / right / wrong / polite of sb. to do sth.
3. 当不定式作主语时,常用it作形式主语 5)当不定式作表语时,如果不定式是对主语中do内容的回答,则常用无to不定式。 6. wh-word + inf. 5. help的用法 7. 不定式的逻辑主语 8. 不定式的省略 9. 不定式与不定式短语
I think it unnecessary (for students) to sit up deep into the night. 4. 当不定式作宾语时,常用it作形式宾语
1)to do(与谓语动词同时发生或在谓语动词之后发生)
A. He happened to stay in the hotel when it caught fire.
B. He planned to go abroad next year.
2)to be done (与逻辑主语之间的关系是被动关系,且发生在将来)
This is the building to be completed next year.
3)to be doing (与谓语动词同时发生,且正在进行)
Look! He seems to be reading now.
9.不定式各种形式的应用 4)to have done (发生在谓语动词之前,且表主动)
He pretended to have seen the film, but he didn’t in fact.
5)to have been done (发生在谓语动词之前, 且表被动)
His bike is said to have been stolen last night.
6)to have been doing (发生在谓语动词之前,且一正在进行)
He is said to have been living in the tent since the earthquake.
1.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. (NMET2000)
A. expected B. to expect
C. to be expecting D. expects
3. Charles Babbage is generally considered _____the first computer. (MET1998)
A. to invent B. inventing
C. to have invented D.having invented
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
5.The boy wanted to ride his bicycle in the street, but his mother told him ______. (NMET95)
A. not to B. not to do C. not do it D. do not to
6. Little Jim should love _____ to the theatre this evening. (MET 97)
A.to be taken B. to take C. being taken D. taking
7.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
8. __late in the afternoon, Bob turned offthe alarm.
A. To sleep? B. Sleeping? C. Sleep? D. Having sleep
9. With a lot of difficult problems ________,the
newly-elected president is having a hard time.
A.settled B. settling C. to settle D. being settled
10. She will tell us why she feels so strong that each
of us has a role_____in making the earth a better
place to live.
A.to have played B. to play
C. to be played D. to be playing
11.In order to gain a bigger share in the international
market, many state run companies are trying ______their products more competitive.
A. to make B. making C. to have made D.having made 12. The teacher asked us_______so much noise.
A. don’t make B. not make
C. not making D. not to make
13. —--The light in the office is still on.
-----Oh, I forgot .
A. turning it off B. turn it off
C.. having turned it off D. to turn it off
14. She can’t help ______ the house because she’s busy making a cake.
A. to clean B. cleaning C. cleaned D. being cleaned
15. Not everybody has the ability in public.
A. of speak B. speaking C. spoken D. to speak
16. Mary is always the first student to answer the teacher’s questions in class.
A. rising B. to rise C. rose D. risen 17.— Mum ,why do you always ask me to eat an egg every day?
--- __enough protein and nutrition as you are growing up.
A. Get B. Getting C. To get D. To be getting
18.—Would you be so kind us out? ---With pleasure.
A. helping B. in helping C. help D. as to help
19. Wet umbrellas are not allowed into this hotel according to the rule.
A. to be taken B. to take C. taken D. taking
20. Robert is said _______ abroad, but I didn’t know what country he studied in.
A. to have studied B. to study
C to be studying D to have been studying
21. In Australia he made a lot of friends ____a very practical knowledge of English.
A.get B. getting C. to get D. got
22. The patient was warned _______ oily food after the
operation.
A. to eat not B. eating not
C. not to eat D. not eating
23. We agreed ___ here, but so far she hasn’t turned
out yet.
A. having met B. meeting
C. to meet D. to have met
24. Paul doesn’t have to be made ________. He always
works hard.
A. learn B. to learn C. learned D. learningA Friend Is Easier
Lost Than Found