职称英语考试句型语序:从句类型(1)

作者:网友提供 时间:2020-02-04

职称英语考试句型语序:从句类型(1)

时间状语从句

  I) when,while和as

  He entered the room when (while, as) the meeting was going on.

  when 通常指一时的动作或状态,可表示从句动作与主句动作同时发生,或先于主句动作;while常用来引导两个同时进行的持续时间较长的动作;as常用来引导两个动作紧接着发生,强调“同一时间”或“一前一后”。

  When I meet the right chance, I will try my best.

  While the teacher explained the text, the students listened attentively and took notes

  He sang songs as he was taking a bath.

  As spring warms the earth, all flowers begin to bloom.

  注:when有时作并列连词意为“正在这时”、“突然”,在句末,不能位于句首。从句的谓语动词常用一般过去时,主句通常用过去进行时、过去完成时或be about to结构等。

  She was about to leave when Mark arrived so she stayed a little longer.

  He had been walking under the trees when an apple fell down. 考试用书

  Ⅱ) as soon as, hardly (scarcely, barely) … when… , no sooner …than… 等引导的时间状语从句,意为“ 一… 就 …”

  Jack had scarcely /hardly seen me when he left the room.

  The spy had no sooner returned home than he was told to go to another country.

  那个间谍一踏进国门就奉命要去他国。

  注: 在no sooner … than, hardly … when …引导的时间状语从句中,若把no sooner, hardly, scarcely, barely 放在句首,则要用倒装结构。

  No sooner had he heard the news than he fainted.

  Scarcely had he entered the room when the telephone rang.

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