题目:

When and where to build the new factory ______ yet.

A: is not decided (正确)

B: are not decided

C: has not decided (误选)

D: have not decided

题中有yet为什么不用完成时?

答:选A

解析:“疑问词 to do sth.”作主语,谓语动词用单数形式,与不定式短语作主语,谓语动词也用单数形式相同。由此可以排除B, D; decide 与 when and where to …存在着逻辑上的动宾关系,表被动,故应使用被动语态,因此该题正确答案为A. 如果C项为has not been decided, 则也正确。

关系副词引导定语从句例句(经典的连接副词引导从句作整个句子的主语单复数和主被动解析)(1)

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