Ⅰ.用适当的情态动词填空
1.—Nowadays children have more freedom.
—I agree.They ________ do what they like.
2.—Please don't tell anybody.
—I ________.I promise.
3.When I lived with my roommates in the university，we________ often talk into the night.
4.—Where did you get The Frog written by Mo Yan?
—I picked it up from a bookshop online if you ________ know.
5.Students ________ remain in their seats until all the papers have been collected.
6.I know that it will be difficult to pick him out in such a crowd，but if you ________ happen to see him，give him this packet.
7.—Why does Thomas speak through every discussion but never listen to the others?
—That's what he ________ do.We used to hate that，but are used to it now.
8.We can't use it to tie the goods because it ________ be broken at the weakest position.
9.—May I smoke here?
—If you ________，choose a seat in the smoking section.
10.—Can you keep a secret?
—You ________ worry—I'm not going to mention it to anyone.
答案 1.can 2.won't 3.would 4.must 5.shall6.should 7.will 8.may 9.must 10.needn't
.完成句子(利用情态动词完成句子)
1.Judging from the bright smile on his face，he ________(一定已经成功了) in passing the job interview.
2.I felt surprised that anyone of his intelligence ________(竟然没有通过) such an easy test.
3.You ________(本不必来) in person;a telephone would have been enough.
4.________(如果我收到) your email，I would have set off two days ago.
5.We all know that we ________(本应该减少) our carbon footprint，but I suspect that many people wouldn't be prepared to go as far as Joan Pick，a retired scientist living in south London.
6.The sleeping baby would be scared ________(如果有) a sudden loud noise.
7.There was something wrong with the network，or the email ________(本可以被发出) earlier.
8.For those of you who ________(也许已经错过了) a few very popular articles that came out last week，check out this mail.
9.We ________(本来能够到达) here on time but we were caught in a traffic jam.
10.If you ________(没有离开) home without a word，your parents wouldn't be so worried now.
答案 1.must have succeeded 2.should have failed 3.needn't have come 4.If I had received/ Had I received 5.should have reduced 6.should there be/if there should be7.could have been sent 8.may have missed 9.could have arrived 10.hadn't left
