内容正文:
Unit 3 Language in use
语法提能导练
1. While the lights were changing to red, a car suddenly appeared round the corner.
2. When Henry was trying to find the snake, his hand began to hurt badly.
3. I was trying to pick it up when it bit me again.
语法详解
过去进行时(2)
1. 过去进行时和when, while, as引导的过去时间状语从句连用,形成复合句。
常见结构如下:
引导词
常见结构
when
Sb. was/were doing sth. when sb. did sth.; When sb. was/were doing sth., sb. did sth.
while
While sb. was/were doing sth., sb. did sth.; Sb. was/were doing sth. while sb. was/were doing sth.
as
As sb. was/were doing sth., sb. did sth.
2. when和while引导的时间状语从句的区别:
(1)在when引导的时间状语从句中,谓语动词可以用延续性动词也可以用短暂性动词。如:
◇They arrived when we were having dinner.
◇We were talking when the teacher came in.
(2)在while引导的时间状语从句中,谓语动词只能用延续性动词。此时,while与when通用。如:
They arrived while/when we were having dinner.
(3)主句(进行时)+when+从句(短暂性动词):强调从句动作的突发性。如:
We were talking when the teacher came in. (强调老师突然进来了)
(4)主句(进行时)+while+从句(进行时):表示两个动作同时发生。如:
They were singing while we were dancing.
3. when和while引导的时间状语从句与主句的时态:
主句
when从句
while从句
一般过去时
过去进行时
过去进行时
过去进行时
一般过去时
过去进行时
一、单项填空。
( D )1. Lingling ________ a paper kite at 7:00 pm yesterday.
A. makes B. is making
C. will make D. was making
( B )2. I was writing a letter to my friend ________ I heard the knock on the door.
A. while B. when
C. after D. if
( D )3. I ________ computer games when my father came into my room last night.
A. played B. playing
C. play D. was playing
( A )4. The driver was listening to music ________ he was driving.
A. while B. when
C. as D. before
( D )5. Don't talk so loudly ________ others are working.
A. while B. when
C. before D. A and B
二、句型转换。
1. I was doing my homework. My parents were reading books. (合并为状语从句)
I was doing my homework while my parents were reading books.
2. The boys were swimming. It began to rain. (合并为状语从句)
The boys were swimming when it began to rain. /When/While the boys were swimming, it began to rain.
3. The woman was looking_after_her_baby then. (对画线部分提问)
What was th