The earthquake when I some cleaning in the kitchen．( )A．starts, was doingB．started, was doingC．was starting, was doingD．starts, were doing 题目和参考答案——青夏教育精英家教网—

10．The earthquake_______ when I_______ some cleaning in the kitchen．（　　）

	A．	starts； was doing		B．	started； was doing
	C．	was starting； was doing		D．	starts； were doing

分析当我在厨房打扫卫生的时候地震开始了，

解答答案：B．表达的是过去的事情，主句表达的是过去的事情用一般过去时，when当…时候从句表达的是过去正在进行的动作故用过去进行时was/were+doing，主语I，故was．，故答案是B．

点评表示过去在某一时间段或某一段时间内正在发生或进行的动作或状态．其形式为主语+was/were+V-ing．常与表示过去的时间状语连用，如：last night，last Saturday等；或者与when，while，as引导的过去时间状语连用．例如：We were watching TV from seven to nine last night．昨天晚上七点到九点的时候我们在看电视．What was he researching all day last Sunday？上周日他一整天都在研究什么？

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