1 . There are over 50,000 signs in modern Chinese but luckily, Chinese children ______ learn all of them for everyday purpose.

A．needn't

B．mustn't

C．can't

D．won't

2 . 选用下列情态动词的恰当形式完成句子。(否定式写缩写)

1. ____________you continue in your efforts and achieve greater success.
2. When I was young, I was told that I ____________play with fire.
3. It ____________be Jack. He has gone to Shanghai.
4. I didn’t send out my application form last week, but I ____________have.
5. You   ____________have washed all those clothes! We have a washing machine to do that sort of thing.

3 . —Must I stay here for hours?
—No, you ________. You can leave at any time.

A．mustn’t

B．needn’t

C．can’t

D．shouldn’t

4 . You _____ be right but I’m going back to check anyway.

A．should

B．must

C．need

D．might

5 . More and more countries have come to realize that the world____ do without Huawei and its "more advanced" technology.

A．can’t

B．needn’t

C．mustn’t

D．shouldn't

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

7 . Since we can do nothing about it, we _________ as well consult Mr. Smith about the matter.

A．can	B．must
C．need	D．may

8 . 用适当的情态动词填空
1. You ________ go now.You ________ finish it today.You have been working for more than eight hours.You ________ be very tired.You ________ go home now and have a good sleep.
2. Mary ________ be in the classroom.I saw her on the playground just now.You ________ have made a mistake.That girl ________ be Jenny.
3. —________ I use your bicycle?
—Certainly，you ________．But it ________ be returned before six o'clock this afternoon.
4. —________ you go and travel there with me next week?
—I’d like to.But I ________．I have a lot of things to do then.________ we go next month?
—Well，see you!
5. You ________ play basketball here.I ________ have told you about it earlier.You ________ ask for permission if you ________ like to.

9 . 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.

10 . 完成句子
①____________ I smoke here?
我能在这里吸烟吗？
②____________ you lend me a hand?
你能帮帮我吗？
③I saw him just now so he ____________ have gone abroad.
刚才我还看见他了，所以他不可能出国的。
④Why ____________ you leave?
为什么你偏要走呢？
⑤You ____________ smoke so much.
你不应该吸烟太多的。
⑥____________ we leave now? Tom ____________ have been waiting for long.
我们现在该走了吧？汤姆肯定等了很长时间了。
⑦Nothing ____________ stop us from carrying out the plan.
没有什么能阻止我们实施此计划。
⑧You ____________ waste any time.
你不应该浪费一点时间。
⑨You don’t need ____________(do) it yourself.
你不必自己做这件事。