高一英语 时间原因状语从句 教师学生版

Presentation (2) –时间状语从句及原因状语从句

时间状语从句

引导词：when, while, as, before, after, until, till, as soon as, the moment, every time, each time, hardly…when…, no sooner …than…

时态：当主句是一般将来时时，时间状语从句常用一般现在时代替一般将来时（主将从现）

I will tell him everything when he comes.

Tips：

1. 比较when, while, as

◆while：“与……同时，在……期间, 趁着”，从句动作是延续性的，侧重主句动作与从

句动作相对比。

While he was reading, his wife was cooking.

They rushed in while we were discussing.

Strike the iron while it is hot. 趁热打铁。

总结：1. while引导的从句常用进行时态。

2. 通常主从句的主语不同。

3. while还可以表示“虽然，尽管”，引导让步状语从句，多放在句首。

While I admit his good points, I can see his bad.

尽管我承认他有优点，我也知道他有缺点。

◆when：除了“当……时候”讲，还可译为“这时，那时”，相当于and at this/that time, 强

调动作的突然性

常用句式有：

We were about to leave when it began to rain.

be about to do… when…

I had not been reading for half an hour when I heard steps outside.

…had（not）done…when…（“刚刚（还没）……就……”）

It was 8:00 in the evening when he went back from work.

It be + 时间点+ when…（当……时是……时间）

be on the point of doing…when…（“正要……时突然……”）

◆as：“一边…一边…”，“随着…”

As she sang, tears ran down her cheeks.

We get wiser as we get older. 我们随着年龄的增长而变得聪明起来。

2. before “在…之前”，“还没来得及……就……”

The ring stopped before I could answer the phone. 我还没来得及接电话，电话铃就停了。常用句式：

It was + 一段时间+ before + 从句“过了多久才…… ”

It was two years before we met again. 又过了两年我们才再次相见。

It wasn’t +一段时间+ before + 从句“没过多久就…… ”

It wasn’t two years before we met again.相隔没到两年我们就又见面了。

It will be + 一段时间+ before + 从句“要过多久才……”

It will be long before we meet again. 要过很长时间我们才能再见面。

It won’t be + 一段时间+ before + 从句“不用过多久就会…”

It won’t be long before we meet again.不用过很长时间我们就又能见面了。

3. 比较until和till

1）until可用于句首，而till通常不用于句首

Until you told me, I had heard nothing of what happened.

2）until when 疑问句中，until要放在句首

---Until when are you staying?你呆到什么时候？

---Until next Monday.呆到下周一。

4. since

1) 从句谓语是延续性动词，则译为“自从不做某事已经多长时间了”

It is /has been two years since he smoked. 他已有两年不抽烟了。

2) 从句谓语是非延续性动词，则译为“自从做某事已经多长时间了”

It is /has been two years since he died. 他去世已有两年了。

3）It /This/That is + the + 序数词+ time + (that) + sb.have done…

It /This/That was + the + 序数词+ time + (that) + sb.had done…

It is the first time that I have read this story. 这是我第一次读这个故事。

5. “一……就……”的表达法

as soon as, immediately, directly, instantly, the moment, the minute, the second, the instant,

no sooner…than…,hardly/scarcely…when…

他一写完作业就去看电视了。

He started to watch TV as soon as/ immediately/ directly/ instantly/ the moment/ the minute/ the second/the instant he finished his homework.

◆hardly／scarcely…when…；no sooner…than…一……就……

1）hardly／scarcely和no sooner所在的句子是主句（过去完成时），when和than引导的是从句（一般过去时）。

2）when和than引导的从句不能放在主句之前。

I had no sooner opened the door than he rushed out.

He had hardly/scarcely seen the policeman when he ran away.

6. every time, each time, next time, any time, the first time, all the time等名词性短语可以用来引导时间状语从句，表示“每次，下次，任何时候，第一次…”等。

Next time you come, do remember to bring your son here.下次来这时，记得带上你儿子。He will sing every time he is happy. 每次他高兴时就会唱起歌来。