初中英语过去进行时(when-while用法)
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Summary 3
Past Continuous Tense过去进行时总结
I. Definition 时态含义
表示过去某一时刻或过去一段时间内正在进行的动作。
II. Time words 时间标志词
1.then, at that time, this time yesterday, at 6 o’clock yesterday ...
2.when/ while/ (just) as引导的时间状语从句
III. Structure 动词结构
was/ were + doing
When/ while/ (just) as 引导的时间状语从句在过去进行时态中的用法区别
1.when 既可以和短暂性动词连用，也可以和连续性动词连用，
句中一般翻译为“当......时候”/“就在那时”。
a.Someone knocked at the door when I was having breakfast.
b.I was taking a bath when the telephone rang.
2.while 只可以和连续性动词连用
句中一般翻译成“当......时候”（=when）/ “然而”（强调前后两个动作同时进行）
a.He cut himself while he was shaving.
b.My wife was cooking the dinner while I was working in the garden.
3.(just) as更强调“随着”，所引导的从句动作一般与主句动作伴随着发生。
a.Just as I was opening the front door, the telephone rang.
b.The children were singing as they went home.
IV. Exercises 练习
( ) 1. We were reading the newspaper suddenly the light went out.
A.when
B. while
C. before
D. after
( ) 2. While she TV in the sitting room, the bell .
A.watches; rings C. was watching; rang
B.is watching; rang D. watched; was ringing
( ) 3. She herself while she off the bus.
A.hurt; was getting C. hurt; is getting
B.Hurts; was getting D. hurts; is getting
( ) 4. When he , I a bath.
A.arriving; was having C. arrived; am having
B.arrived; was having D. arrives; was having
( ) 5. When I saw her on the way here, she a magazine.
A.reads
B. is reading
C. was reading
D. will read
6.昨天晚上8点你正在做什么？
7.我到家的时候，妈妈正在厨房做饭。
8.我在写作业的时候我爸爸正在看报纸。
9.我正要离开前往上海，邮递员来了。
10.我们正在河里游泳突然天就下雨了。