英语每日一练非谓语动词07.01

环球网校·2016-07-01 16:45:50浏览收藏

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摘要 1、The flu is believed ________ by viruses that like to reproduce in the cells inside the human nose and throat A causeB being caused C to be caused D to have caused答案：

1、The flu is believed ________ by viruses that like to reproduce in the cells inside the human nose and throat.

A.cause B.being caused C.to be caused D.to have caused
答案：C
解析： the flu与cause是被动关系，所以要用过去分词，排除AD，又The flu is believed to be caused by...=It is believed /People believe that the flu is caused by...故选C

2、_______ the programme, they have to stay there for another two weeks.

A.Not completing B.Not completed C.Not having completed D.Having not completed
答案：C
解析：首先，非谓语动词的否定式要将not, never等放在非谓语动词的前面，所以不能选D。其次，由于“没有完成”与“不得不再呆两周”有先后关系，故用现在分词的完成式。不是A不对，是C更准确。故选C。

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