1 . 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.

2 . 语法专练（用情态动词的适当形式填空）
1. In today’s information age, the loss of data ______ cause serious problems for a company.
2. We ______ call Tim before we visit his house; he ______ not be at home.
3. If you ______ smoke, please go outside.
4. A: I’ve got a bad headache.
B: Why don’t you go and lie down?
A: Yes, I think I will. ______ you bring me some aspirin?
B: Yes, of course I can. ______ I call the doctor?
A: No. Let’s wait and see how I feel later.
B: ______ you like a glass of water?
5. No one ______ be more generous than he; he has a heart of gold.
6. — You needn’t take an umbrella. It isn’t going to rain.
— Well, I don’t know. It ______ do.
7. It ______ be the vocabulary that caused you the problem in the exercise because you know a lot of words.
8. From the experiment, we can know that fish ______ die out of water.
9. When I passed my school, I ______ visit my teachers who once taught me.
10. Let’s go for a walk after supper, ______ we?

3 . 单句语法填空
1. — ______ I use your English dictionary, Wang Mei?
— Sure. Here you are.
2. — It is reported that the heavy typhoon is coming.
— Yes, it is. We ______ be more careful.
3. It is six o'clock and my mother is worried about me, so I______ go home now.
4. Samuel, the tallest boy in our class, ______ easily reach the books on the top shelf.
5. No wonder you caught a cold. You ______ (go) out last night without a coat.
6. Let us go to Jack’s birthday party tomorrow, ______ you?
7. The problem is hard to solve. ______ the professor come at once to help us?
8. ______ joy and health be with you always.
9. — Will my daughter be all right soon, doctor?
— She ______ be, if she takes these tablets.
10. — Don’t you want to go swimming with us this afternoon?
— I wish I ______, but I have an appointment.

4 . We ____________ have proved great adventurers, but we have done the greatest march ever made in the past ten years.

A．needn’t	B．may not
C．shouldn’t	D．mustn’t

5 . —You look very pretty, if I         say so.
—Thanks a lot for saying that.

A．must	B．may
C．will	D．have to

6 .
1. My English book isn’t here. Where______________？(put)
我的英语书不在这里。我可能把它放哪儿了呢？
2. When I called her last night, she______________.(fall)
昨晚我给她打电话时,她一定是睡着了。
3. Without this kind of knowledge, no one______________.(able)
如果没有这种知识,没有人将能够做这项工作。
4. ________________for a while, Mom？(play)
妈妈,我可以玩一会电脑游戏吗？
5. She said that ______________,so I didn’t go to your home.(go)
她说你可能出去了,因此我没有去你家。
6. She asked whether we______________.(give)
她问我们是否愿意来帮她的忙。
7. He ______________ when he was a child.(fish)
当他还是个孩子时,他常和父亲一起去钓鱼。
8. If you finish your homework on time, you ______________ what you want.(do)
如果你按时完成作业,你就可以有时间做你想做的。
9. It’s strange that he ______________by such a little boy.(fool)
他竟然被那么小的男孩愚弄了太奇怪了。
10. ________at this time of night？(play)
你偏在晚上的这个时候弹钢琴吗？

7 . —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

8 . (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

9 . —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

10 . Life is unpredictable; even the poorest __become the richest.

A．shall

B．must

C．need

D．might