状语从句教案.doc

状语从句教案.doc状语从句
一、概念
定义:
在复合句中由从句表示的状语称作状语从句,它可以用来修饰谓语(包括非谓语动词)、定语或状语,或是整个句子。
状语从句可分为:时间、条件、让步、原因、目的、结果、比较、地点、方式状语从句。
从属连词:
用来连接两个句子、且一个句子从属于另一个句子(即从句)的连词。这类连词叫从属连词。从属连词主要用于引导各种状语从句。
二、详解
一)、时间状语从句
在句中作时间状语的句子叫时间状语从句。时间状语从句可以放在句首、句中或句尾。
引导时间状语从句的连词有:when, as,while,till,until, not…until, as soon as, before, after, since, ever since, once, the minute, the moment, by the
time,each(every,next,thefirst)time,directly,immediately,instantly,hardly...when...,no sooner...than...等。时间状语从句中一般用一般现在时或一般过去时。
When , while, as都可解释为“当...的时候”但侧重点有所不同。
when引导的从句的动作和主句的动作可以同时发生,也可以先后发生。
Eg: When I arrived home , I had a little rest.
注意:
when 从句的主语与主句主语相同,谓语动词是be 动词时,从句主语和be可以省略。
Eg: When (she was) walking along the street, she met her class teacher.
As表示从句和主句的两个动作交替发生或同时进行,可译为“一边...一边...”或“随着”。
Eg: He sang as he danced.(一边...一边...)
You will grow wiser as you grow older.(随着)
While表示“当...的时候”强调主句的动作和从句的动作同时发生,从句一般用进行时,从句动词必须是延续性动词。
Eg: While we were working, they were having a rest.
While (they were) having a discussion, they got very confused.
注意:
while 有对比的含义,解释为“然而”。
Eg: I prefer black tee, while he likes coffee.
4)若从句表示的是短暂动作,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,此时,三者可互换使用。
Eg:As/When/While I was walking down the street ,I came across an old friend of mine.
注意:
,用一般现在时表将来,用一般过去时表过去将来。
Eg:When you get here , ring me up.
意为“一旦”,也可引导时间状语从句。
Eg:Once I get him a job , he’ll be fine.
We didn’t know how we would cope once the money had gone.
【应用园地】
time went on, things began to change.
was walking along the road when suddenly someone patted me on the shoulder from behind.
students sang as they went along.
while the iron is hot.
a child,he lived in the countryside.
careful when crossing the steet.
was so excited ______ he received an invitation from his friend to visit Chongqing.

8.—Was it there ______ you were away to answer the phone?
—There is no doubt about it.