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大学英语A语法词汇

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大学英语A语法词汇

题目内容

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单选题

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For years, doctors ________ millions of patients＇ lives with the help of microscopes.

A、have saved

B、are saving

C、will save

D、were saving

答案：A

解析：参考解析:现在完成时。状语是"多年来”，指从过去某一时刻开始起一直持续到现在，是典型的用来指导完成时的标志。A项是过去完成时，其他都不是。B项是现在进行时，表示正在进行的动作，不符合。C项是将来时。D项是过去进行时，表示过去某一时刻正在进行的动作，这三项都不符合。句意:多年以来，医生们已经借助于显微镜挽救了数百万人的生命。

大学英语A语法词汇

They think that you will go to Bei Hal Library tomorrow, __________ .

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There ____ no time left, we had to change our plan.

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The new model of the car was put into production in 2007, ________ helped to provide another1400 jobs.

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The output of our factory is now twice ________ it was three years ago.

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______ difficulties we may come across, we＇ll help one another to overcome them.

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There was a heavy fog this morning, so none of the planes could ________.

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These pictures _________ to his mind his previous days in China.

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Helen is fond of light music, ________ her brother is keen on rock and roll.

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_______ our great surprise, the new secretary can speak four foreign languages.

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Seldom _________ his wife punishes her children for speaking out their own ideas freely.

题目内容

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单选题

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大学英语A语法词汇

For years, doctors ________ millions of patients＇ lives with the help of microscopes.

A、have saved

B、are saving

C、will save

D、were saving

答案：A

相关题目

They think that you will go to Bei Hal Library tomorrow, __________ .

A. don＇t they

B. do they

C. will you

D. won＇t you

解析：参考解析: think后面接宾语从句时，当主语是第一人称时，后面的反意疑问句应对宾语从句进行提问，当主语不是第—人称时，反意疑问句应对主语进行提问，故选A。

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There ____ no time left, we had to change our plan.

A. being

B. had

C. would be

D. has

解析：参考解析:该句中用的是there be句型，所以B、D两项排除，C项构成句子的谓语部分，因为此句不缺少谓语，所以只有being符合要求，故选A。

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The new model of the car was put into production in 2007, ________ helped to provide another1400 jobs.

A. that

B. when

C. what

D. which

解析：参考解析:本题考查关系代词。非限制性定语从句只能由关系代词which来引导，并且和主句用逗号隔开。答案为D。句意:2007年，这种新车型投入生产了，带来了1,400个工作岗位。

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The output of our factory is now twice ________ it was three years ago.

A. what

B. that

C. as

D. which

解析：参考解析:倍数的表达方式可以是倍数+名词，此旬中，名词是一个由what引导的名词从句，what是从句的表语，故选A。

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______ difficulties we may come across, we＇ll help one another to overcome them.

A. Whatever

B. However

C. Whenever

D. Wherever

解析：Whatever + n. difficulty (-y名词后缀n.困难→difficulties ns.复数形式)

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There was a heavy fog this morning, so none of the planes could ________.

A. get through

B. take off

C. pull out

D. break away

解析：参考解析:本题考查词组含义辨析。go through意为"通过";pull out意为"拔出，离开";take off意为"起飞";break away意为"突然离开”。根据句意，这里指飞机起飞，故答案选B。句意:今天早上由于雾太大，飞机无法起飞。

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These pictures _________ to his mind his previous days in China.

A. brought up

B. brought back

C. brought about

D. brought forth

解析：参考解析: bring up意为"教育、培养";bring back意为"使回忆起";bring about意为"带来、造成";bring forth意为"使产生”。结合四个选项的意思，只有B符合题意，故选B。

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Helen is fond of light music, ________ her brother is keen on rock and roll.

A. when

B. and

C. while

D. for

解析：参考解析:四个可供选择的连词中，只有while可表示对比之意，有"而..."的意思。故选C。

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_______ our great surprise, the new secretary can speak four foreign languages.

A. Of

B. In

C. To

D. For

解析：参考解析:本题考查固定搭配。to one＇s surprise意为"使某人大吃一惊”，是固定搭配，surprise也可以与介词in和with搭配。in surprise和with surprise都可以表示"大吃一惊"，但是要表示"使某人大吃一惊”，只能是to one＇s surprise。答案为C。句意:令我们大为吃惊的是，这位新来的秘书能讲四国外语。

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Seldom _________ his wife punishes her children for speaking out their own ideas freely.

A. I saw

B. I have seen

C. have I seen

D. do I see

解析：参考解析:具有否定意义或否定形式的词或词组位于句首时，谓语用部分倒装结构。其他具有否定意义的词还有: never, little, scarcely, hardly, not only等。另外，根据句意应用现在完成时态。

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