1 . Johnny, you ________ play with the knife, you ________ hurt yourself.

A．won’t; can’t

B．shouldn’t; must

C．mustn’t; may

D．can’t, wouldn’t

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

3 . 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.

4 . 用适当的情态动词填空
（1）—Excuse me. Is this the right way to the Summer Palace?
—Sorry, I'm not sure. But it ____________be.
（2）—Do you know where David is? I couldn't find him anywhere.
—Well, he ____________have gone far - his coat's still here.
（3）Mr. Bush is on time for everything. How ____________it be that he was late for the important meeting?
（4）He ____________ have completed his work; otherwise,he wouldn't be enjoying himself by the seaside.
（5）Look!The light in the office is still on. Our English teacher ____________be correcting our exam papers.

5 . The sportsman ________save a drowning boy that afternoon; the boy’s parents appreciated him very much.

A．might	B．could
C．was able to	D．must

6 . —What happened to the young trees we planted last week?
—The trees ________ well, but I didn’t water them.

A．might grow	B．needn’t have grown
C．would have grown	D．would grow

7 . (2015·陕西)You _________ feel all the training a waste of time, but I’m a hundred percent sure later you’ll be
grateful you did it.

A．should	B．need
C．shall	D．may

8 . —Can’t you stay a little longer?
—It’s getting late. I really _____ go now. My daughter is home alone.

A．may	B．can
C．must	D．dare

9 . 【2018·滨海7校联考】—Are you coming to Jeff’s party?
—I’m not sure. I ______ go to the concert instead.

A．must	B．would
C．should	D．might

10 . Michael  _______  be a policeman, for he is much too short．

A．needn’t	B．can’t
C．should	D．may