第12讲 状语从句
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入舵市安恙阳光实验学校专题12 状语从句一、状语从句概览二、语法详解在复合句中作状语的从句叫做状语从句。
状语从句可以位于主句之前,也可以位于主句之后。
1.时间状语从句1.when, while和as引导的时间状语从句连词含义用法when当……时候可与延续性动词或非延续性动词连用;从句动作可以发生在主句动作之前、之后或与主句动作同时发生while当……时候只可与延续性动词连用;侧重于主句动作与从句动作相对比as一边……一边……;随着常与延续性动词连用;从句动作与主句动作同时或几乎同时发生1.Researchers in Britain found that when French music wasplayed, sales of French wines went up.2.While watching TV, children do not merely absorb words andimages.3.As he grew older, he became less active.[特别注意] 如果主句表示的是非延续性动作,而从句用延续性动词的进行时态表示在一段时间内正在进行的动作,则when, while与as可互换使用。
When/While/As I was walking down the street, I came across an old friend.2.表示“一……就……”含义的词或短语引导的时间状语从句(1)有的名词(短语)或副词可引导时间状语从句,如:the moment, theminute, the second, the instant, immediately, directly,instantly等,另外as soon as也可引导时间状语从句,从句中用一般时态代替将来时态。
For example, the moment you get on the airplane, startadjusting your biological clock to the destination's time.The boy ran off the minute he saw the owner of the orchard.(2)在hardly/scarcely ... when和no sooner ... than ...结构中,主句用过去完成时,than或when所在的从句用一般过去时。