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时间状语从句 初中英语状语从句知识点:时间状语从句

  连词主要有:when as while before after until as soon as since等

  (1)区别when, as, while的用法

  ①.when"当......时候"引导的时间状语从句,其动词既可以是延续性动作的动词,也可以是瞬间性动作的动词,如:

  _________ the students heard the teacher's footsteps, they all stopped talking.

  当学生们听到老师的脚步声时,他们都停止了讲话。(从句动作发生在前)

  ② as"当.......时候"或"一边.......一边"引导的时间状语从句其动词的动作是延续性的,而且侧重表示主句和从句的动作并相发生:

  We were having breakfast __________ she was combing her hair.

  她梳头时我们在吃早饭。

  ③ while表示"在某一段时间里"或"在……期间",其所引导的从句的动作是延续性的,并侧重表示和主句的动作同时发生。如:

  I can learn ________ I work.

  我可以边工作边学习。

  用when, as, while填空:

  ________ you came in, I was talking with a few boys.

  It started to rain __________ we were playing outdoors.

  They talked _________ they walked down the river.

  __________ it was raining, the students were playing basketball.

  Her brother watched TV__________ he ate supper.

  (4) before引导的时间状语从句,指时间上的"在……之前"

  I'll be back _______________________________________________.

  你离开之前我就会回来。

  (5) as soon as表示"一……就",做题要注意主将从现

  As soon as we __________ (get) there, he ___________ (tell) us the news.

  我们一到那,他就会告诉我们那个消息。

  (7) since引导的时间状语从句,从句的谓语动词通常为一般过去时,主句的谓语动词通常为现在完成时

  We __________ never __________ (meet) since we ___________ (graduate) from the college.

  大学毕业后我们就再没见过面。

  (8) till/until引导的时间状语从句 till和until同义,作"直到……时(为止)"解,till多用于非正式文体,until多用于句首;not … until通常与after进行转换。如:

  I won't go with you until(till) I finished my homework.

  =____________________________________________________________________.

  等我做完作业我才和你一起去。

注:原文章转载于 ,如有问题请联系我们,邮箱zixun@changingedu.com

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