时间状语从句知识点归纳

表示时间的状语从句连接词通常有：连接词when、as soon as/while当…，as 当…/before 在…前，after 在…后/since 自从…/till/until 直到…，具体用法如下：

时间状语从句知识点归纳

1、用when引导： when表示"当…时候”。如：

Things were different when l was a child.

我小时候情况与现在不同。

People breathe more slowly when they are asleep.

人睡觉时呼吸比较缓慢。

2、用while引导： while表示" 当…时候”。如：

We must strike while the iron is hot.

我们要趁热打铁。

went swimming while the othersplayedtennis.

我去游泳，其余的人都打网球去了。

注意： while所引导的时间状语从句中谓语动词必须是持续性的，不能是短暂性的。

3、用as引导： as表示“当…时候”“随着…”。如：

He dropped the glass as he stood up.他站起来时，把杯子摔了。We get wiser as we get old.

随着年岁的增长，我们也变得聪明些了。

4、用before引导： before 表示"在…之前”。如：

Turn off the lights before you go to bed.睡觉前要关灯。

Before he went to university he was a worker.

上大学之 前他是工人。

5、用after引导： after表示“…之后”。如：

I will tell you after they leave.他们走我再告诉你。

After you finish the letter show it to me.

信写完后给我看看。

6、用until / till引导： until I till表示“直到…如：

He waited until she was about to leave.他等着-直到她准备离开。

watched him until he disappeared in the distance.

我瞧着他直到他在远处消失。

这类句型的主句动词通常只能是延续性动词，不能是终止性动词。但是，在否定句中，主句动词可以是终止性动词，此时构成ntntil …句式，意为“直到……如：

She didn't marry until she was over fifty.她直到五十多岁才结婚。

We'd better not go until your sister arrives.

我们最好等你姐姐到了再走。

7、用since引导： since表示“自 ……来”。如：

We have known each other since we were children.我们从小认识。

They've moved twice since they got married.

他们结婚后已搬了两次家。

这类句子的主句通常用现在完成时。但是，当主句表示一段时间时，可用一般现在时代替现在完成时。如：

It's a long time since we met last.好久没见面了。

How long is it since you came in London?你来伦敦有多久了？

什么是时间状语从句

所谓时间状语从句就是表示时间状态的从句，只是一般来说简单句里面可以用tomorrow、yesterday、today来表示时间状态，而在复杂句中，需要用一句话告诉读者，这段文字说的是什么时间的事情。

比如这句：I didn't go to bed until（till） my father came back.（直到我父亲回来我才上床睡觉。）

这句话表达的意思是我睡觉的时间，但这个时间并不是用一个单词能解决的，而是my father came back（我父亲回到家）这个动作发生的那一刻是我上床睡觉的时间。

It was not until the meeting was over that he began to teach me English.直到散会之后他才开始教我英语。

其中，the meeting was over是表示时间概念的。

I worked until he came back.我工作到他回来为止。

这句中的he came back也是表示时间状态的。

时间状语从句练习

（一）根据句意，用合适的连词补全句子，使其意思完整。

1.Mother was doing some cleaning_____father was watching TV.

2.She danced_____she sang.

3.He waited for me_____I came back home.

4.He couldn't help crying_____he heard the bad news.

5.It has been ten years_____they left Shanghai.

6._____the doctor was checking her, she suddenly remembered the photo.

7.I'll send an e-mail to you_____I get to London.

8.Lucy didn't fall asleep_____her parents returned last night.

9.Do you turn off the lights_____you leave the room?

10._____I was reading in the room, the telephone rang.

（二）句子翻译。

1.自从她来到上海，她就在这家医院工作。

2.每天吃饭前，我们必须洗手。

3.当天气好的时候，我们通常出去散步。

4.当学生们在教室看书时，老师进来了。

5.当天黑时，他们到家了。

6.她昨天一直等到我们完成了这项工作。

7.我一到广州就会给你们发邮件。

8.他们踢完足球后，就开心地回家了。

9.当他们吃野餐时，天突然下起了雨。

10.自从我们住在这里，我们就交了很多朋友。

*练习参考答案

（一）1.while 2.as 3.until 4.when 5.since 6.As 7.as soon as 8.until 9.when 10.While

（二）1.She has worked in this hospital since she came to Shanghai.

2.We must wash hands before we have meals every day.

3.When it is fine, we usually go for a walk.

4.While the students were reading in he classroom, the teacher came in.

5.As it was getting dark, they arrived/got/reached home.

6.She waited until we finished this work yesterday.

7.I will send email to you as soon as I get to/reach/arrive in Guangzhou./I will send you email as soon as I get to/reach/arrive in Guangzhou.

8.They went home happily after they played football.

9.While they were having a picnic, it suddenly began/started to rain.

10.We have made many friends since we lived here.