初中语法复习.doc

过去进行时态
过去进行时表示过去某一时刻或者某段时间正在进行或发生的动作,常和表过去的时间状语连用,如: I was doing my homework at this time 。They were waiting for you 。
      过去进行时的构成:
肯定形式:主语+was/were+V-ing
否定形式:主语+was not (wasn't)/were not (weren't)+V-ing
疑问形式:Was/Were+主语+V-ing。
基本用法:
。常与之连用的时间状语有,at that time/moment, (at) this time yesterday (last night/Sunday/week…), at+点钟+yesterday (last night / Sunday…),when sb. did sth等时间状语从句,如:
    What were you doing at . yesterday? 昨天晚上七点你在干什么?
    I first met Mary three years ago. She was working at a radio shop at the time. 我第一次遇到玛丽是在三年前,当时她在一家无线电商店工作。
    I was cooking when she knocked at the door. 她敲门时我正在做饭。
       2. when后通常用表示暂短性动词,while后通常用表示持续性动词,因此它所引导的状语从句中,谓语动词常用进行时态,如:
    When the car exploded I was walking past it.= While I was walking past the car it exploded.
        ,主句常用进行时态,从句则用一般过去时,表示主句动作发生的过程中,另一个意想不到的动作发生了。如:
 I was walking in the street when someone called me. 我正在街上走时突然有人喊我。
        4. when作并列连词,表示“(这时)突然”之意时,第一个并列分句用过去进行时,when引导的并列分句用一般过去时。如:
    I was taking a walk when I met him. 我正在散步,突然遇见了他。
We were playing outside when it began to rain. 我们正在外边玩,这时下起雨来了
一般过去时与过去进行时的用法比较:
一般过去时表示“在过去某个时间发生的动作或存在的状态”,而过去进行时则表示“在过去某个特定时间正在进行的动作”。
如:Tom wrote a letter to his friend last night.
汤姆昨晚给他的朋友写了封信。(信写完了)
Tom was writing a letter to his friend last night.
汤姆昨晚一直在给他的朋友写信。(信不一定写完,只是强调了动作的延续性)。
过去进行时和一般过去时的差别:
一般过去时表示“在过去某个时间发生的动作或存在的状态”,而过去进行时则表示“在过去某个特定时间正在进行的动作”。
例如:I was reading an English novel last night. 昨晚我在看一本英文小说。(可能没看完)
I read an English novel last night 我昨晚看了一本英文小说。(已经看完)
用动词的适当形式填空。
1. While we __________ (wait) for the bus, a girl __________ (run) up to us.
2. I __________ (telephone) a friend when Bob __________ (come) in.
3. Jim __________ (jump) on the bus as it __________ (move) away.
4. We __________ (test) the new machine when the electricity __________ (go) off.
5. She __________ (not want) to stay in