初二时间状语从句-教师版

时间状语从句－教师版
请思考以下问题：
1. 什么是状语？
a. He speaks English very well.( 副词 作状语)
b. I come specially to see you.（ to do 作状语）
c. The boy was praised for his bravery.（ 介词短语 作状语）
d. When she was 12 years old, she began to live in Dalian.（ 句子 作状语）
2. 状语从句是什么?
a. I was doing my homework when my mother came in.（ 时间 状语从句）
b. While John was watching TV, his wife was cooking. （ 时间 状语从句）
c. My friends dislike me because I’m handsome and successful.（ 原因 状语从句）

引导词
when
用法
意为“当…的时候”。when引导
例子
1. A liar is not believed when he speaks the truth.
从句的谓语动词可以是
2.

I was doing my homework when my mother came in.
延续性动词 ，也可为 非延续
性。.
while
意为“在…的时候，在…的同
时”。while引导从句的谓语动词
必须是 延续性 v的，发生
时间较长，并强调主句和从句
的动作同时发生（或者相对
应）。while 有时还可以表示对
比,意为 然而
as
意为“一边…一边…”,同时发
生。
till／until 意为“直到”
not.....until “直到…才..”
1. She didn’t even know that it was an earthquake till she
saw a shaking light.
2. He didn’t go to bed until he had finished his work.
as soon as
意为“一…就…”。引导时间状语
从句时
1. Tom will call me as soon as he gets home.
2. I will call you as soon as I arrive.
1. Helen heard the story as she washed clothes.
1. While I was standing at the window, I saw several boys
running along the street.
2. While John was watching TV, his wife was cooking. （同
时进行）
原则： 主将从现

小试牛刀
1. ---Where was your brother at this time last night?
--- He was writing an e-mail ______ I was watching TV at home.
A. when B. while C. until
2. None of us knew what had happened _______ we heard the news on radio.
A. after B. until C. when
3. Other kids ate candy for breakfast. I had to have porridge.
A. Before B. Until C. As soon as D. While
4._______ I finally got to the top of the mountain, it suddenly changed.
A. As B. Till C. Since D. Until
5. Wu Yi will help with the housework _______ he gets home after school.
A. since B. while C. as soon as
6. Kelly cooked dinner for her parents ______ they were cleaning the yard.
A. while B. since C. before
7. _____ they went along, they saw a pair of old shoes lying on the path.
A. Since B. As C. By the time
8. ______ I am in trouble, my classmates will help me out.
A. Before B. Whenever C. Although
9. ______ he was ten, he climbed the highest mountain in Africa.
A. By the time B. when C. since
10. _______ I arrived at the bus stop, the bus had left.
A. After B. Until C. By the time
11. ---I want to know when Mr. Brown will arrive.
---When he _______, I will tell you.
A. will arrive B. arrived C. arrives
12. I’m sorry to have you waiting so long for Marcia, and I’m afraid it’ll be ten minutes
______ she comes back.
A. before B. after C. until

课后练习题
1.. — When will you come to Daqing?
— I will call you _____I arrive.
A. till B. while C. as quickly as D. as soon as
2. I’ll give it to Jim as soon as I ____him tomorrow.
A. saw B. will see C .see D. have seen
3. —I want to know when Mr. Brown will arrive.
—When he , I will tell you.
A. will arrive B. arrived C. arrives
4. .The bus driver always says to us ,“Don’t get off________ the bus stops.”
A. when B. while C .until D. if
5. . —Excuse me Could you wake me up when my friend____ here?
—Of course. [:hat we still don't know when your friend _____ here.
A. comes; will come B. comes； comes
C. will come; comes D. will come； will come
6. . ________ I was in he US, I made a lot of American friends.学科王
A. While B. Although C. Unless D. Until
7. . You can’t watch TV ________ you finish your homework.
A. before B. if C. while D. as
were playing on the computer their teacher came in .
A. after B. when C. until D. then
,please turn off the lights you leave the classroom.
A. after B. before C. until D. but
10. It’s a serious problem .We can’t decide Mr Green comes back.
A. while C. until D. after
students didn’t realize the importance of study they left school.
A. when B. until D. after
12.---It’s quite common in England to say “Thank you ” to the drivers people get off
the bus.
A. while C. when D. after