题目内容
7．My sister with my parents dumplings when I got home yesterday evening．（ ）| A． | are making | B． | is making | C． | was making | D． | were making |
分析 昨天晚上当我到家的时候，我妹妹在和我父母正一起包水饺．
解答 答案：C．
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"当我到家时"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，另外主语后面跟with短语时，谓语动词由with前面的主语来确定，My sister是第三人称单数形式，故选C．
点评 本题考查了动词的时态和主谓一致．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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