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编辑推荐：2015成人英语三级考试复习重点汇总
过去进行时
1、表示在过去某个时间正在进行的动作。相当于现在进行时的过去形式。常需用表示过去的时间状语或通过上下文来判断时间。
例：During the summer of 1999 she was traveling in China. 1999年的暑假她在中国旅行。
2、when 和while 的用法区别
when 表示一个特定时间点，其所引导的句子用过去时，while 表示持续的一段时间，其所引导的句子用过去进行时。
例：(1)Edison was not a good student when he was a young boy. 爱迪生小时候不是一个成绩好的学生。
例：(2)While he was eating, I asked him to lend me $2. 当他正在吃饭时，我请他借给我二英镑。
3、过去进行时表示过去将来的动作。现在进行时可以表示将来的动作，同样，过去进行时也可以表示从过去某时间看将来要发生的动作。
例：He went to see Xiao Li. He was leaving early the next morning.
他去看小李。他第二天一早就要离开此地了。
4、was going to表示“准备做某事”或“将要发生某事”
例：She was going to buy him some shoes. 她准备给他买几双鞋。
往年试题：
例(1)I fell and hurt myself while I _____tennis.
A. was playing B. am playing C. play D. played
答案：A
例(2)When you _____ this over with her， you should not see her any more.
A. talk B. talked C. will talk D. talking
答案：B
例(3)One of the guards _____ when the general came in， which made him very angry.
A. has slept B. were sleeping C slept D. was sleeping
答案为D
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