2017年公共英语四级单项选择精彩解析

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1. Everyone is busy _____ the examination in the classroom.

A. with B. for C. on D. under

答案： A

解析： 注意几个固定搭配： be busy (in) doing sth 忙于做…; be busy with sth 忙于…; busy oneself (in) doing sth 忙于做……; busy oneself with sth 忙于……。

2. I suppose you couldn’t let me borrow your car this evening, _____?

A. couldn’t I B. don’t I

C. could you D. will you

答案：C

解析：suppose 后面的从句中为否定式couldn’t，而主句为肯定式，这是否定后移的用法，后面的`反意疑问句要根据从句而定，故反意疑问句用肯定式could you。

3. Smoking is not good _____ you because it can affect your health.

A. for B. at C. to D. on

答案： A

解析： be good for… 对…有好处; be good at… 善长于…。

4. Henry and Bady _____ to the parties at the Trade union every Saturday.

A. are used to go B. use to go

C. used to go D. were used to go

答案： C

解析： be used to do… 被用于做…; used to do… 过去常常…。

5. _____ , the inhabitants fled.

A. The city taken B. The city having been taken

C. Having taken the city D. The city being taken

答案： B

解析： 独立主格结构。

1. In ancient China, people used to send smoke _____ to warn that the enemy were coming.

A. signs B. signals C. symbols D. marks

答案: B

解析: 这个题考四个名词的比较, 其中: signs 迹象; signals 信号; symbols 象征; marks 分数.

2. The icy conditions made our travel dangerous. So _____ going by car we took the underground.

A. instead of B. in addition to

C. as well as D. at the cost of

答案: A

解析: instead of 代替,而不是; in addition to 除了…之外(还有); as well as 也(除…之外), 既…又…; at the cost of 以…为代价. 这道题横线后面是动名词形式,所以选项C和D首先排除.

3. Sometimes my job is boring, but _____ I enjoy it.

A. by contrast B. by nature

C. on the whole D. on the average

答案: C

解析: by contrast 与…相比,后面要跟with, by contrast with与…相比较; by nature 本性,生性; on the whole 总的来说; on the average 平均.

4. I’ll buy the clock _____ it costs.

A. what B. whatever C. where D. however

答案: B

解析: 不管花多少钱,我都买下这个钟.

5. _____ on is well again, he can travel.

A. Now that B. So far C. Though D. Even if

答案: A

解析: Now that 既然; So far和现在完成时态连用.