内容正文:
动词时态复习(二)
一、一般过去时
1. 表示过去发生的动作或存在的状态,常跟有一个表示过去时间的状语。如:
I caught a fish twice that big last week.
We were all excited on the wedding day.
2. 表示过去习惯性的动作。如:
He gave Mary surprising gifts every Christmas.
3. 在时间或条件状语从句中,常用一般过去时代替过去将来时。如:
The students wouldn't leave until the teacher came back.
Ann said she wouldn't go shopping if it rained.
二、过去进行时 (构成形式为:was / were +动词-ing形式)
1. 表示过去某一时刻或某一阶段正在进行的动作。如:
I was trying to fix a machine before you arrived.
They were building a dam last winter.
2. 表示过去打算做某事。如:
The teams were leaving a few days later.
3. 表示说话人的某种情绪,常与always, forever, frequently等连用。如:
Frank was always changing his mind.
三、过去完成时 (构成形式为:had +动词-ed形式)
1. 表示过去某一时间或动作之前已经发生或完成的动作。如:
I had finished writing the article when they came.
2. 表示在过去某一时间之前已经开始并一直持续到那时的动作或状态。如:
By six o'clock they had worked for twelve hours.
3. 表示过去本打算做某事却未能实现的希望和意图,只适用think, hope, expect, want, intend, plan, mean等表示意愿的动词。如:
They had wanted to help but couldn't get here in time.
【即学即练】用括号内所给动词的正确时态填空。
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