题目内容
7．The Smiths _____ when it suddenly began to rain．（ ）| A． | was watching TV | B． | are watching TV | ||
| C． | were watching TV |
分析 当天突然开始下雨的时候史密斯一家正在看电视．
解答 答案：C．考查过去进行时态．句意"当天突然开始下雨的时候史密斯一家正在看电视．"．结合语境"当天突然下雨时"，可知应该是斯密斯一家正在看电视，表示过去某个时间正在进行的动作，用过去进行时态，结构是was/were+动词的现在分词．由The Smiths斯密斯一家，可知应该用复数were，答案是C．
点评 过去进行时态．表示在过去某一时刻或某一段时间内发生或进行的动作或状态．结构是was/were+动词的现在分词，注意主语的单复数变化，及动词现在分词变法，结合语境选择合适形式．
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