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初二下册英语unit 3知识点总结

[01-13 16:58:06]   来源:http://www.kuaixue5.com  初二英语辅导   阅读:8762
概要: 概要:While Jim was mending his bike, Lin Tao came to see him. 正当吉姆修自行车时,林涛来看他。(3) 另外,when和while的区别还在于:while引导的时间状语从句多用进行时态,而when引导的时间状语从句多用一般时态。While they were talking , the bell rang. 正在他们谈话的时候,上课铃响了。I was doing my homework when my mother came back home yesterday evening. 昨天晚上妈妈回家的时候,我正在做家庭作业。二、语法详解过去进行时: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 yesterday.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
初二下册英语unit 3知识点总结,标签:八年级英语辅导,http://www.kuaixue5.com

  While Jim was mending his bike, Lin Tao came to see him. 正当吉姆修自行车时,林涛来看他。

  (3) 另外,when和while的区别还在于:while引导的时间状语从句多用进行时态,而when引导的时间状语从句多用一般时态。

  While they were talking , the bell rang. 正在他们谈话的时候,上课铃响了。

  I was doing my homework when my mother came back home yesterday evening. 昨天晚上妈妈回家的时候,我正在做家庭作业。

  二、语法详解

  过去进行时: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 yesterday.

  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:

  1.过去进行时表示过去某一段时间或某一时刻正在进行的动作。常与之连用的时间状语有,at that time/moment, this time yesterday at+点钟+yesterday ,when sb. did sth等时间状语从句,如:

  What were you doing at 7p.m. yesterday?

  I first met Mary three years ago.

  She was working at a radio shop at the time.

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