1 . 单句改错
1. When I was young, I daren’t to swim in the swimming pool alone.
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2. In my opinion, students don’t need pay more attention to their appearance.
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3. When Harry was at college, he will go to the reading room after supper every day.
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4. Martin hasn’t got in touch with me for ages. He mustn’t have got my new cellphone number.
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5. It was an easy test and he would have passed, but he didn’t.
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6. What is required in the regulations is that you mustn’t tell other people the password of your e-mail account.
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7. Might you have a good time.
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8. —Must I tell him the truth？
—No, you mustn’t.
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9. Engines should not run without lubricants(润滑油).
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10. If you make mistakes again, you should not take part in the match.
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2 . 选词填空

needn't,　　must,　　should,　　might,　　can't,　　may,　　can,　　could,　　will,　　would

1. He_____________have passed the exam; otherwise, he wouldn’t be so happy.
2. Tom_____________be watching TV now at home, for I saw him going shopping just now.
3. I_____________go on the trip with you, but I am not sure yet.
4. The film is so boring, and we_____________as well not go to see it.
5. The World Wide Web is sometimes jokingly called the world wide wait because it _____________be very slow sometimes.
6. It is known to us all that oil_____________float on water.
7. I_____________have come here in time, but I met an old friend of mine. I stopped and talked with him for some time.
8. You failed again; you _____________work hard from now on.
9. It is not cold today; I_____________have put on the coat.
10. When he was young, he _____________play football after school.

3 . 选择括号内适当的情态动词填空
1. — __________ (Must/Would) you come to chat with me when I’m very busy?
—Yes, I have something important to share with you.
2. —I promise her daughter __________ (shall/should) get a nice present on her birthday.
—Will it be a big surprise to her?
3. As you know, all passengers __________ (should/would) switch off their mobile phones when they are taking the plane.
4. It is usually warm in my hometown in March, but it __________ (should/can) be rather cold sometimes.
5. Now that he is here, you __________ (can/may) as well ask him for some advice-
6. According to the rules, applicants (申请人) __________ (must/can) have finished middle school.
7. —Shall I tell John about it?
—No, you __________ (needn’t/shouldn’t). I’ve told him already.
8. —That must be a mistake.
—No, it __________ (mustn’t/can’t) be a mistake.
9. —Must I take a bus to your home?
—No, you __________ (must not/don’t have to). It’s just a 5-minute walk from here.
10. He __________ (must/might) have passed the final examination; I was not sure.

4 . 单句改错
1. It has been announced that candidates may remain in their seats until all the papers have been collected.
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2. When I read the story last night, I wouldn’t help thinking of my days in the countryside.
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3. You should be tired after the long trip, aren’t you?
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4. Tom, you needn’t leave all your clothes on the floor like this!
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5. You can’t imagine that a well-educated gentleman might make such a silly mistake.
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6. —Must I pass the book on to Mary when I finish it?
—No, you can’t.
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5 . 请用方框内情态动词的正确形式填空

1. You ______ go on working because you look so tired now.
2. Hurry up. If you miss that train then you ______ get a taxi.
3. You ______ come to the meeting if you’re too busy.
4. You ______ park here! It’s an emergency exit.
5. What a pity! But if you ______ go, at least wait till the min stops.
6. —Could I have a look at your passport?
—Yes. you ______.Here it is.
7. You ______ imagine what difficulty we had walking home in the snowstorm.
8. The weather turned out to be fine yesterday. I ______ have taken the trouble to carry my umbrella with me.
9. You ______ follow the doctor’s advice. I think it will do good to you.
10. I ______ have phoned Ed this morning, but I forgot.

6 .
1. You__________________ go on working because you look so tired now.
2. Li Hua__________________pass an examination before he can start work.
3. You__________________come to the meeting if you’re too busy.
4. You__________________play now! You shall finish your homework first!
5. I know things are hard with you, but you__________________try to get over the difficulties.
6. I didn’t see her at the meeting this morning; she__________________have spoken at the meeting.
7. You__________________imagine what difficulty we had walking home in the snowstorm.
8. The weather turned out to be fine yesterday. I __________________have taken the trouble to carry my umbrella with me.
9. You__________________follow the doctor’s advice. I think it will do good to you.
10. I__________________have phoned Ed this morning，but I forgot.

7 . —You didn’t wait for Tom yesterday.
—Yes, but we ______. He didn’t come.

A．needn’t have	B．didn’t need to
C．could have	D．should have

8 . — I’ve prepared all kinds of food for the picnic.
—Do you mean we_____ bring anything with us?

A．can’t	B．mustn’t
C．shan’t	D．needn't

9 . When I was a child, I ______ watch TV whenever I wanted to.

A．should	B．could
C．must	D．need

10 . The new law states that people _______drive after drinking alcohol.

A．wouldn’t

B．needn’t

C．won’t

D．mustn’t