题目内容
4.When I came in,all the seats _____.( )A. | has taken | B. | was taken | C. | had been taken | D. | had taken |
分析 当我进来的时候,所有的座位都被坐满了.
解答 答案:C.
根据when引导的时间状语可知,这是一个一般过去时的句子,而座位被占满是发生在我进来之前,所以为过去的过去,应该使用过去完成时,all the seats与take之间为逻辑上的动宾关系,所以用被动语态;故选C.
点评 过去完成时态表示过去的过去,时间状语是过去的参照时间.和现在完成时态不同的是,现在完成时态的参照时间是现在.学习时,要注意区分.

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