情态动词must, can’t, could,might表推测的用法：
Complete the ntences using“must”or“can’t”.
1. I have tried to call him at the office, but there is no reply. He________be at home.
2. They have bought a new car. They ________have a lot of money.
3. She is carrying a Japane newspaper. She ________be Chine.
4. He travels a lot. He ________have an important job.
5. She is a professor at the university. She ________be very clever.
6. She is acting in a Shakespeare play tomorrow. She ________be an actress.
Choo the best answers to complete the following ntences.微博网名
1. I guess you ________like something to read. So I have brought you some books.
A. Can’t B. might C. must
2. –That man must be Sarah’s husband.
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–No, he ________be her husband. She is still single.
A. Can’t B. must C. might not might
3. Peter________ come with us tonight, but he isn’t very sure.
A. must B. might C. can D. will
4. –What ________it be?
–It ________be a mail box, for it is moving. It ________be a car.
A. can; can’t; must B. can; can; must
C. can; mustn’t; must D. must; mustn’t; can
5. –Look, someone is coming.
–It________ be Jack. He’s always on time.
A. must B. could C. might D. Can夹壮’t
济源旅游景点哪里好玩6. –I saw Mary in the library yesterday.
–You ________her. She is still abroad.
A. mustn’t e B. can’t have en C. mustn’t have en D. might have en
7. David, don’t play with the valuable bottle, you ________break it.
A. can`t B. might C. must D. can
8. Susan refus to marry Jack now. She ________have changed her mind.
A. might B. could C. must D. Can’t 中国有嘻哈冠军
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9. Sue ________come together with us tonight, but she isn艾克连招’t very sure yet.
A. must B. might C. can’t D.mustn’t
10. Aunt Margaret ________have misd the rain, otherwi she would have arrived here by now.
A. must B. could C. can’t D. might
Fill in the blanks using must / can’t / could /might .
1. –Do you know Where Lily is?
–She ________ be in the library. But I am not sure.
2. She doesn蛋挞’t answer the bell. She ________be asleep.
3. The ground is wet. It ________have rained last night.
4. He is writing with a pencil. He ________have lost his pen.
5. A computer ________think for itlf, it ________be told what to do.
6. There is much gas here, you ________smoke here.
7. –Was he prent at the meeting?
–He ________have attended it, for he was busy repairing his car all the time.
8. Look! An old man is lying in the middle of the street. He ________be hurt in an accident.
9. Nobody saw her at the meeting yesterday, she ________have spoken at the meeting.
10. –My goodness. I just misd the train.
–That’s too bad. I am sure you ________have caught it, if you had hurried.
