5.1系动词助动词情态动词.docx

5.1系动词助动词情态动词
5.1系动词助动词情态动词

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系动词、助动词、情态动词
一、 情态动词
1。can（could)：能够、可能、可以；may(might):可以、可能；must：必须； shall：将会；should：应该；will：将会，愿意；would:将会
2.半情态动词（后接动原，但否定和疑问句要借助do)：have to不得不，had better最好，used to过去常常
3.情态动词无三单（have to除外）；不能单独使用，后接动词原形共同构成谓语
4。 need既可做实义动词又可做情态动词（作实义动词,后接to do/doing,否定don’t need to do do/doing;作情态动词,后接动词原形，否定needn’t do)
5。表推测：must be一定是（语气最肯定），can be可能是，may be也许是(语气最不肯定）；can’t be一定不是（语气最肯定,must be的否定形式）
6。maybe也许(副词，常用在句首）；may be也许是（谓语动词,用在句中)
7.must与need开头的一般疑问句,肯定回答用must，否定回答用needn’t/don't have to(不必）.
8.may开头的一般疑问句，肯定回答用may/can，否定回答用can’t/mustn't。
二、系动词
1。系动词后可接形容词。
2.表示状态的系动词be(am, is, are， was, were，been），keep ,stay，表示感觉的半系动词feel （摸起来，感觉)， look (看起来）, smell （闻起来)， sound (听起来）,taste(尝起来）；
三、助动词
1。助动词本身无词义或意义不完整，必须和实义动词共同构成谓语。
2.常用的助动词：be(am， is, are， was, were，been,being）用于进行时态或被动语态；do(does，did)用于一般现在时或一般过去时的否定句和疑问句；have(has,had)用于完成时态；will,shall,would，should用于将来时态，shall/should只能用于第一人称。

情态动词与系动词练习题
一、基础题
1。—Where’s Mr Lee? I have something unusual to tell him. -You________ find him. He________ Japan.
A。 may not； has gone to B. may not； has been to C. can't； has gone to D. can't； has been to
2。—Finish drawing a horse in ten minutes. OK？—Sorry. It________ in such a short time。
A。 may do B. can’t be done C。 must do D. needn't be done
3。I have my own room in my house， so I________do what I want in it.
A。 must B。 have to C. need to D. can
4。________you mend my car? I______not start it。
A。 Would； would B。 Must; must C。 Can; can D. May; may
5。________she ride when she was three years old?
A. Can B. Could C. Need D。 May
6。 The boy________answer this kind of hard questions one year ago.
A。 can B。 may C。 could
7。Who is the man over there? Is it Mr Li？-No， it________be him。 Mr Li is much taller.
A. mustn’t B. may not C. can’t D。 needn't
8。 -Listen！ Someone is singing in the next room。 Who________it be? Is it Wei Fang?
-No。 It________be her。 She is at school now.
A。 will； may not B。 must; mustn’t C. may; can't D. may; won’t
9。 -Is Mr Hu in the reading room?—No, he________be there. He has gone to Tianjin。
A。 mustn't B. needn't C。 won't D. can’t
10。 ________you pass me a pen？ I'd like to write down the telephone number。
A。 Need B. Could　C。 Must D。 Should
二、提高题
1.—May I go to the cinema, Mum?-Certainly. But you________be back by 11 o’clock。
A。 can B。 may C。 must D. need
2.—SARS is such a terrible disease。—Yes， it is。 We________be more careful.
A。 can B. may C。 must D。 need
3. To make our city more beautiful, rubbish________into the river.
A. needn't be thrown　B。 mustn't be thrownC。 can't throw　D。 may not throw
4. These books________out of the reading room. You have to read them here.
A. can’t take B。 must be taken　C。 can take D. mustn’t be taken
5. Cars, buses and bikes________stop when traffic lights change to red。
A。 can B。 may C。 must D. need
6。 —Can you go swimming with us this afternoon？
　-Sorry, I can’t。 I________take care of my little sister at home because my mother is ill.
A. can B. may　C。 would D。 have to
7. -Must I finish the work before five o'clock？—No， you________。
A. needn't B。 mustn't C. have to
8. -________I come back before five o'clock？
-No， you________。 But you________be back later than seven o'clock。
A. Need; must; mustn’t　B。 May； mustn't; can't C. Can； can't; can't　D。 Must; needn't； can’t
9. —Must I clean the room right now？-No, you________。 You________clean it after lunch。
A. needn’t； can　B。 needn't; may C。 mustn’t； canD. mustn’t； may
10。Susan's parents have bought a large house with a swimming pool。 It ____be very expensive.
A. must B. can C。 mustn’t D. can’t
11。 This book________Lucy’s. Look！ Her name is on the book cover。
A. must be B。 may be　C。 can't be D. mustn't be
12。-________I have your name， please？—Yes， Michael。 M—I—C—H-A-E-L。
A. Must B。 Will C。 May D。 Need
13。 -May I go to the cinema, dad？-No, you________。 You must finish your homework first。
A. mustn’t B。 won’t　C。 don't D。 needn’t
14. —May I smoke here？-________, you________。 It can be dangerous.
A。 Yes; can B。 No; can’tC. Yes; may D。 No， needn't
15. You________go and ask Meimei. She________know the answer.
A。 must； can B。 must； may C. need; can D。 can; may
16. Look out! The knife is very sharp。 You________cut your finger.
A. need B. must C。 should D。 may
三、巩固
1.A teacher __do every exercise, but a pupil___.
A needn't ;must B may not； must C needn’t ;needn’t D can't ；must
2.You ___to the meeting this afternoon if you have something important to do。
A needn’t to come B don't need come C don’t need coming D needn't come
3。 —Could I look at your pictures？—Yes， of course you________.
A. could B。 can C. will D. might
4。He ______ some time to rest because he feels thirsty and hungry。
A.need B.needs C。needing D。needed
5.I _______ a car， the bike is good for me.
A。don’t need buy B。don’t need to buy C.needn't to buy D.needn’t buying
6. –Someone is knocking at the door。 Who ______ it be?
--It ______ be Tom。 He is still in the school。
A。 can； can’t B。 can; mustn’t C. might; could D。 might; may
7。He ________ run a train when he finishes his training in that college。
A.can B。will can C。is able to B.will be able to
8.He ________ sing 30 songs when he was five.
A。can B。have could C.has been able to D.had been able to
9。 Mr Wang ______ be in Nanjing now， he went to Beijing only this morning。
A。 mustn’t B. may not C. can’t D。 needn’t
10. –Must I stay at home， Mum?—-No, you ______.
A. needn’t B. mustn’t C. don’t D. may not
11。 —-______ the man there be our new teacher?——He ______ be, but I’m not sure。
A. May； mustn’t B。 Can; may C. Must； can’t D。 Can； can't
12。 Even the top students can’t work out this problem. So it ______ be very difficult.
A。 can B. may C. must D. need
13. It’s still early。 You ______.
A。 mustn’t hurry B。 wouldn’t hurryC。 may not hurry D. don’t have to hurry