(共8张PPT)
Unit 5 What were you doing when the rainstorm came?
Section A
Grammars
人教新目标版英语八年级下册
情景导入
What were they doing when the rainstorm came?
新知讲解
1. Oh, I was in the kitchen helping my mom.
含义：
结构：
标志词：
表示在过去某一时刻或某一段时间正在进行的动作。
was/ were + doing
at 2 yesterday afternoon,
in those days,
at that time,
at this time yesterday...
I was reading a book at 9 last night.
I wasn’t reading a book at 9 last night.
Were you reading a book at 9 last night?
What time were you reading a book last night?
过去进行时
新知讲解
2. So while you were sleeping, I called Jenny and she helped me.
when
while
既可以表示时间点，也可以表示时间段，从句中谓语动词可以是瞬间性动词，也可以是延续性动词。
只表示某个时间段，从句谓语动词必须用延续性动词，且多用进行时态。
When I arrived at my hometown, it was raining.
While it was raining, I arrived at my hometown.
when和while的用法辨析
when和while可以进行同义句转换
典型习题
句型转换
1. He was sleeping at this time last Sunday. (改为否定句)
He ______ ________ at this time last Sunday.
2. We were listening to the teacher when she came in. (对画线部分提问)
______ ________ you _______ when she came in?
wasn’t sleeping
3. She was doing homework when I called her. (改为同义句)
What
_____ she was doing homework, I called her.
While
were
doing
典型习题
单项选择
( ) 1. He was playing tennis _______.
A. yesterday B. at that time
C. tomorrow D. now
( ) 2. Amy was reading a book _____ I came in.
A. when B. while
C. because D. though
B
A
总结提升
过去进行时的用法及各种句型结构
when和while引导的时间状语从句
再见！
