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初中英语情态动词讲解练习和答案解析

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.WORD.格式.

7. 8.

We ________________ start right now, or they would get there first. The cloud is lifting, so it ________________ (not) be a rainy day tomorrow.

二、选择填空

( )1.—Do we have to finish our homework this afternoon?

—Yes, you ________.

A. must B. can C. may D. need

( )2. —Must I be in hospital for a week, Doctor?

—No, you

A. mustn’t B. needn’t ( )3. The desk is not dirty. You _______clean it.

A. mustn’t

B. shouldn’t

C. needn’t

C. can’t

( )4. —May I watch TV for a while?

—No, you _______. You have to finish your homework first. A. shouldn’t B. needn’t C. mustn’t D. won’t ( )5.—Is Jessica giving us a speech this evening? —No, it ________be her. She________ to Japan.

A. mustn’t; has gone B. mustn’t ;has been C. can’t ;has gone can’t ;has been

( )6. It’s the library! So you________ know shouting is not allowed here.

A. can

B. must

C. need

D. may

C. should finish D. should be

( )7. Boys and girls, don’t forget your report . It ______ today.

A. can’t finish finished

( )8.—Mr Smith must have been to your home this morning.

—No, he ______ ,because he didn’t know my address. A. couldn’t

B. can’t

C. mustn’t

D. may not

( )9. —Must I mop up the window now?

—No, you________. A. needn’t

B. can’t

C. shouldn’t

D. mustn’t

( )10. —Is Lucy knocking at the door?

—No. It ________ be Lucy. She is in Japan now. A. needn’t B. must C. can’t ( )11. —Another cup of coffee?

—No, thanks. I _____ be off. Mary is waiting for me. A. can B. may C. must D. might ( )12. —I’m a little tired. Let’s go to the zoo by taxi.

—We take a taxi. It’s not far from here. A. can’t

B. mustn’t

C. couldn’t D. needn’t

( )13. If the traffic light is red, you ________ cross the road. It’s very dangerous.

A. don’t B. mustn’t C. needn’t D. wouldn’t ( )14. —Must I finish watering the flowers now?

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D.

B. can’t be finished

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—No, you________.

A. must B. won’t C. needn’t D. can’t ( )15. —I can’t give up smoking, doctor.

—For your health, I’m afraid you ________.

A. may B. can C. have to D. must

( )16. It is usually warm in my hometown in March, but it _______ be rather cold sometimes.

A. must B. can C. should D. would ( )17. —Our class won the English speaking contest.

—Congratulations! You _______ be very proud of it. A. can B. need C. would D. must ( )18. —Excuse me, where are we going to have our class meeting?

—I’m not sure. Ask our monitor, please. He know. A. can B. may C. need D. shall ( )19. —____________I borrow these magazines?

—Sorry, only the magazines over there can be borrowed.

A. Must B. Would C. May D. Need

( )20. If the traffic light is red, you ________ cross the road. It’s dangerous.

A. don’t B. needn’t C. mustn’t D. wouldn’t

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典型例题

例1答案 C 分析:表示否定的猜测用can’t 。must表示推测时,意为“一定”,只能用于肯定句,而must的否定must not(mustn't)表示“不应该”、“不许可”、“不准”、“禁止”等。

例2答案 C 分析:在回答带有must的问句时,否定式常用need not (= needn't),表示“不必”,而不用must not,因为must not表示“不可以”。

例3答案 D 分析:本题第一句是请求对方的允许,需要用May,其否定式为mustn’t。

例4答案A。对于以情态动词must提问的疑问句,否定回答要用“No, 主语+needn’t”,故由问句中的must和答句中的No可选A。 例5答案B 例6答案 C

例7答案A 考查情态动词must表示肯定的推测。结合关键信息“I never even dream about it.”可知题意为“它肯定是非常贵的”,故排除B、C、D三项。 例8选D。本题考查can’t表示否定的推测。四个选项都是情态动词的否定形式,分别意为“不能;不可能”、“千万不能”、“应该”、“可以;可能”。结合关键信息“He has gone to Japan.”可知“他不可能是约翰教授”应选D。 例9选C

例10选D。以can 引导的一般疑问句再作肯定回答时还是用can。 课后练习 一、1. must 2. can’t, Could 3. Must, needn’t, may 4. couldn’t 5. had to 6. must, may 7.

had better 8. can’t

二、 1A2B3C4选C。对于情态动词may的一般疑问句的肯定回答为:Yes,you may / can . 否定回答为:No, you mustn’t.5C6B7D8A9A

10选C。考查情态动词can’t表示推测的用法。can’t表示否定的推测;must表示肯定的推测。由题意“不可能是露西,她现在在日本”可知应选C。

11选C。考查情态动词must的用法。结合关键信息“Mary is waiting for me.”可知题意为“我必须离开了”,故排除A、B、D三项,选C。

12选D。四个选项都是情态动词的否定式,结合关键信息“It’s not far from here.”可知“我们不必乘出租车”,故排除A、B、C三项,选D。

13选B。考查情态动词mustn’t的用法。mustn’t意为“一定不能”,由“很危险”可知用mustn’t,故选B。 14选C。考查对must开头的一般疑问句的回答。以must开头的一般疑问句,作否定回答时用情态动词needn’t,故正确答案为C。

15选C。考查情态动词have to的用法。may意为“可能、或许”,can意为“能、会”,have to意为“必须、不得不”,表客观要求,而must 表主观愿望。根据题意“为了健康,你必须戒烟”可选C。 16选B17选D

18选B。考查情态动词may表示推测。结合前句“I’m not sure. Ask our monitor, please.”可知题意为“他可能知道(我们将在哪里开班会)”,故选B。may表示可能性的推测,常用在肯定句中。 19选C

20选C

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初中英语情态动词讲解练习和答案解析

.WORD.格式.7.8.We________________startrightnow,ortheywouldgettherefirst.Thecloudislifting,soit__________
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