初中语法状语从句.ppt

英语语法
状语从句
状语从句的分类
时间状语从句
When I got home, Peter is cooking.
条件状语从句
If we can change our thoughts, we can change the world.
让步状语从句
Although the world is full of suffering, they can always be e.
原因状语从句
People with goals eed because they know where they are going.

按照引导词分类:
When, while, as:当……时,在……的同时
When/As/While he was eating his breakfast, he heard the door bell.
Since:自……以来
It has been two years since I came to Beijing.
从句动词为非延续性动词 when
The boy cried when he saw his mother.
从句动词为延续性动词 while, as , when均可
while强调“在……的同时”
as强调“伴随”的状态
Tom fell asleep while Jerry was giving a lecture
辨析:when / while / as
时间状语从句的破题方法
1. 读题,寻找时间线索
2. 判断主句和从句动作的延续性
非延续性动词when
3. 判断两个动作在时间上的关系
同时while
伴随as
真题演练
(2007上海)He transplanted the little tree to the garden ____ it was the best time for it.
A. where B. when
C. that D. until
扩展练习
(2008上海)
— Are you ready for Spain?
— Yes. I want the girls to experience that ____ they are young.
A. while B. until C. if D. before
其他引导词:
(1)until/till
延续性动词+肯定语气:到……为止
例:Walk till e to a white house.
非延续性动词+否定语气:到……才开始
例:We didn’t begin our discussion until he came back.
是是非非
真题演练
(2003上海)A good storyteller must be able to hold his listeners’ curiosity _______ he reaches the end of the story.
A. when B. unless C. after D. until
扩展练习
(2000上海) My uncle ___ until he was forty-five.
A. married
B. didn't get married
C. was not marrying
D. would marry