大学英语每日一练（3-6）

101. It was so noisy that we ______ hear ourselves speak.

A.couldn’t

B.shouldn’t

C.mustn’t

D.needn’t

101.【答案】A.

【解析】考查情态动词。句意：如此吵闹以至于我们不能听到自己说话的声音。couldn’t“不能，不可能”;shouldn’t“不应该”;mustn’t“禁止，不允许”;needn’t“没必要，不需要”。由it was so noisy可知，so...that引导的结果状语从句“我们不能听见自己说话”，故用couldn’t.故选A。

102. You ____ be Carol. You haven’t changed a bit after all these years.

A.must

B.can

C.will

D.shall

102.【答案】A.

【答案】考查情态动词。句意：你一定是Carol，这些年你一点没变。A(一定);B(可能);C(将);D(会，将)，可知可以很肯定的知道是Carol，根据上下文意思，故选A。

103. I _____ have worried before I came to the new school, for my classmates here are very friendly to me.

A.mightn’t

B.mustn’t

C.needn’t

D.couldn’t

103.【答案】C.

【解析】考查情态动词。句意：因为我的同学对我很友善，所以我没有必要担忧。mightn’t“不可能”;mustn’t“禁止，不允许”;needn’t“没必要”;couldn’tt“不可能，不能”。故选C。

104. The road was wet this morning. It ______ last night.

A.must be raining

B.must rain

C.must have rained

D.have been rained

104.【答案】C.

【解析】考查情态动词。句意：今天早上路面是湿的，昨晚一定下雨了。对过去动作做出肯定推测，需要使用must have done形式。故选C。

105. You ________ all those clothes! We have a washing machine to do that sort of thing.

A.needn’t have washed

B.shouldn’t have washed

C.must not have washed

D.can not have washed

105.【答案】A.

【解析】考查情态动词。句意：你本没有必要洗那么多衣服!我们有洗衣机来做那种事情。needn’t have done本没有必要做。故选A。

106. John’s score on the test is the highest in the class; he ________ last night.

A.should study

B.should have studied

C.must have studied

D.must have to study

106.【答案】C.

【解析】考查情态动词。句意：约翰的考试分数全班最高，他昨天晚上一定学习了。表示对过去某一动作行为的肯定猜测须要用 must have done这一句型结构。故选C。

107. The room is in a terrible mess; it ________ cleaned.

A.can’t have been

B.shouldn’t have been

C.mustn’t have been

D.wouldn’t have been

107.【答案】A.

【解析】考查情态动词完成式表过去推测的用法。句意：这个屋子乱成一团糟，它一定没有被打扫过。can’t have done 表示对过去发生的情况做出的否定的推测。句意：这个屋子乱成一团糟，它一定没有被打扫过。故选A。

108. People in that district _________ use oil lamps, for there is no gas or electricity.

A.can

B.may

C.must

D.have to

108.【答案】D.

【解析】考查情态动词。句意：那个地区的人不得不使用油灯，因为没有煤气和电。A意为能够;B意为可能;C意为必须;D不得不;故选D。

109. Dr. John __________ be in Paris because I met him in town just now.

A.may

B.can’t

C.might not

D.may not

109.【答案】B.

【解析】考查情态动词的用法。句意：约翰博士不可能在巴黎。因为我刚刚在镇子里遇见他了。对确定事实的否定，用can’t。故选B。

110. You ________ to town to see the movie yesterday. It will be on TV tonight.

A.needn’t go

B.should not go

C.had better not go

D.needn’t have gone

110.【答案】D.

【解析】考查情态动词。句意：你昨天没必要去城里看电影，今晚电视上会播映。needn’t have done 表示“本不必做”， should not do 表示“不应该做”。根据句意，故选D。