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2.4 过去进行时 |
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过去进行时用来表示在过去某个时刻正在进行的动作，由be动词的过去式加动词现在分词构成。
Mike was having lunch when Terry arrived.
当特里到达的时候，迈克正在吃午饭。
They were reading books in the library at 3.30 this afternoon.
今天下午三点半的时候，他们正在图书馆里看书。
When the telephone rang, I was cooking a meal in the kitchen.
当电话铃声响起的时候，我正在厨房做饭。
一般过去时的结构
练一练 （答案点击此处）
请将下面每个句子中的错误改正，每题只有一处错误。
1. Sue is doing her homework at this time yesterday.
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2. My parents are preparing for my birthday party at 10 o'clock this morning.
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3. When I arrived home, my mother is cooking in the kitchen.
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4. I was sawing a film with my friends at that moment.
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5. What were you did when I knocked at the door?
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