Ⅱ.用适当的情态动词完成句子
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?
答案：1.can I have put it 2.must have fallen asleep
3.will be able to do this job 4.May I play computer games
5.you might go out 6.would come and give her a hand
7.would go fishing with his father 8.shall have time to do
9.should have been fooled 10.Must you play the piano
Ⅲ.根据句意填入恰当的情态动词
1.He ________have arrived，but he was delayed because of the heavy fog.
他本该到了，但是由于大雾他被耽搁了。
2.The boy________go home now.Don't worry.
这个男孩现在一定是回家了。不要担心。
3.________ I let him in，Madam?
夫人，让他进来吗?
4.—May I use your computer?
——我可以用你的电脑吗?
—No，you ________.
——不，绝对不行。
5.Mary________ play the violin when she was five.
玛丽五岁时就会拉小提琴了。
6.I hope the weather ________ be fine and you________ have a good time.
我希望天气会好转，你也玩得开心。
7.That girl ________ be Alice because she's in hospital.
那个女孩不可能是艾丽斯，因为她住院了。
8.She ________ turn to me when she was in trouble.
处于困境时，她常常来求助于我。
9.If someone had attempted to save him，he ________ not have drowned.
如果有人试图去救他，或许他就不会溺死。
答案：1.should 2.must 3.Shall 4.mustn't 5.could
6.will;will 7.can't 8.would 9.might
