题目内容
18.When Bob's mother came home,he ________ a shower.( )| A. | is taking | B. | was taking | C. | takes | D. | took |
分析 当Bob的妈妈回家的时候,他在洗澡.
解答 答案:B.
结合语境推测句意是"当Bob的妈妈回家的时候,他在洗澡.",根据when引导的时间状语从句用了一般过去时,判断设空处的动作在过去某个时刻,即"妈妈回家时"正在进行着,且动作在一段时间内持续进行,所以用过去进行时,过去进行时的构成是:主语+was/were+动词的现在分词,故选B.
点评 本题考查了动词的时态.做题时,一定要特别关注有关的时间短语,这是判断句子时态的标志.在没有时间状语的情况下可以联系上下文根据语境来做出正确判断.
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