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高考英语作文句型:when引导的从句

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  when引导的从句
  when除了用来引导主语从句、宾语从句、时间状语从句、表语从句和定语从句,还有一种用法值得关注,那就是when引导并列分句,意思是“这时突然;就在那时”,强调另一个动作的突然发生。常用于以下句型中:(1)、主语 + be doing… when…意思是“正在做某事这时……”;(2)、主语 + be about to do…when…;(3)、主语+be on the point of (doing) …when…意思是“正要去做某事这时……”
  [例句]
  One day Chuck was on a flight across the Pacific Ocean when suddenly his plane crashed. 有一天,Chuck正在太平洋上飞行,这时他的飞机突然爆炸了。
  I don’t know when he will arrive. 我不晓得他什么时候到达。
  I thought of the happy days when I was in Beijing. 我想起了在北京时的那段快乐日子。
  I believe the time will soon come when there will be no weapons in the world. 我相信世界上没有武器的日子不久就会到来。
  I was walking along the river when I heard a drowning boy cry for help. 我正在河边行走,这时我突然听到一个落水男孩求救。
  I was about to leave when it began to rain. 我刚要离开,这时下雨了。
  I had just finished my exam paper when the bell rang, announcing the class was over. 我刚做完作业,下课铃响了。
  I thought of the happy days when I was in France. 我想到了在法国时那段快乐日子。
  I believe the time will soon come when there will be no weapons in the world. 我相信世界上没有武器的日子不久就会来临。
  [比较]
  I was walking along the street when I caught sight of a tailor’s shop. 我正在街上走,这时我看见一家裁缝店。
  I was walking along the streets. Just at the moment I caught sight of a tailor’s shop. 我在街上走。就在那时我看见一家裁缝店。

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