初中英语状语从句课件 PPT

辨析：when / while / as
• 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，“一边…一边…”
Tom fell asleep while Jerry was giving a lecture. He sang as he went along．
e.g. As long as I get my father’s permission, I’ll go!
条件状语从句题的破题方法
1. 读题，确认从句和主句 2. 分析从句和主句之间的逻辑关系（正面条件/反面条 件） 3. 根据逻辑关系选择合适的引导词 正面条件：if, as long as 反面条件：if … not, unless
扩展练习
1. That was really a splendid evening. It’s been years ____ I enjoyed myself so much. •when B. that C. before D. since 2. They ___ friends since they met in Shanghai. A. have made B. have become C. have been D. have turned
back.
真题演练
1. A good storyteller must be able to hold his
listeners’ curiosity _______ he reaches the end of
the story. （2003上海）
A. when B. unless C. after D. until
时间状语从句的破题方法
判断主句和从句 动作的延续性
非延续性：
when
Leabharlann Baidu
延续性：when,
while, as
同时 while
伴随 as
大家学习辛苦了，还是要坚持
继续保持安静
真题演练
1. He transplanted the little tree to the garden ____ it was the best time for it. （2007上海）
初中英语状语从句课件 PPT
1. What is it?
• 用来修饰主句或主句的谓语
2. what are the sorts?
• 时间状语从句
• 条件状语从句 • 地点状语从句 • 原因状语从句 • 让步状语从句 • 目的状语从句 • 结果状语从句 • 比较状语从句
1. 时间状语从句
Examples:
A. where
B. when
C. that
D. until
2. — Are you ready for Spain?
— Yes. I want the girls to experience that ____ they are young. (2008上海)
A. while B. until C. if D. before
help us.
• I got in touch with him immediately I received his
letter.
• My sister came the moment she got my message. • Every time I catch a cold, I have pain in my back.
两种since的句型
since：“自…以 来” ①. 主句用现在完成时（或现在完成进行时）时，从句 中用一般过去时
e.g. I’ve lived here since I came to Beijing.
②. It is (has been)…..+ since +一般过去时
It is five years since I began to learn English.
其他引导词：
（1）until/till 延续性动词+肯定语气：到……为止
e.g. Walk till you come to a white house.
非延续性动词+否定语气：到……才开始 not…until
e.g. We didn’t begin our discussion until he came
• e.g. Once he goes, we
can clean up.
(3)
• before, after • 表示时间的先后 • e.g. I found his pen
after he had left.
真题演练
1. A dozen ideas were considered ____the architect decided on the design of the building. （2006上海） A. because B. before C. whether D. unless
2.条件状语从句
逻辑关系：假设 引导词：① if, unless (if not)
e.g. You will not pass the exam unless you work
hard.
= You will not pass the exam if you don’t work
hard.
② 在……条件下：as long as
• When/As/While he was eating his breakfast, he
heard the door bell.
• It has been two years since I came to Beijing. • Whenever we met with difficulties, they came to
2. My uncle ___ until he was forty-five.（2000上海）
A. married
B. didn't get married
C. was not marrying D. would marry
(2)
• once, the moment, as soon as
• 表示“一…就…”