一、时间状语从句

(1)引导词while(谓语动词必须是延续性动词)，when(谓语动词可以是终止性的，也可是延续性的)，as(当…的时候，强调“一边…一边”)

Please keep quiet while/when others are studying.

当别人在学习时，请保持安静。

When I went into the lab, the teacher was doing an experiment. 当我走进实验室时，老师正在做实验。

As/When/While I was walking down the street, I noticed a police car.

当我沿着大街散步的时候，我注意到一辆警车。

(2)引导词till/ until (直到…), not…until/till (直到…才)

They played volleyball until/ till it got dark. (延续性动词)

他们打排球直到天黑才结束。

He didn’t go to bed until/till his father came back.(非延续性动词)

直到他父亲回来他才睡觉。

二、地点状语从句

引导词：where, wherever

Make a mark where you have a question.

在你有问题的地方标个记号。

Sit wherever you like.

坐在你喜欢的地方。

三、条件状语从句

引导词：if, unless, so/as long as, on condition that, so/as far as, if only(=if)

If he is not in the office, he must be out for lunch..

如果他不在办公室，那一定是出去吃午饭了。

You may borrow the book so long as you keep it clean.

你可以借这本书，只要你让它保持干净。

四、原因状语从句

引导词：because, since, as

He had to stay at home yesterday because he was ill.

昨天他必须呆在家里，因为他病了。

Since everyone is here, now let’s begin.

大家都到齐了，现在开始。

五、结果状语从句

引导词：so that, so…that, such…that

He was so excited that he jumped from the sofa.

他如此激动以至于他从沙发上跳了下来。

六、目的状语从句

引导词：so, so that, in order that, in case(以防，以免)

Speak clearly, so that they may understand you.

说清楚些以便他们都能听懂。

He left early in case he should miss the train.

他早早地离开，以防误了火车。

七、让步状语从句

引导词：although, though, as, even if/ though, however, whatever, whether…or, no matter who/when/what…

Child as he is, he knows a lot.

尽管他还是个孩子，他却知道很多。

Whatever(No matter what) you say, I’ll never change my mind.

无论你说什么，我都不会改变主意。

八 、比较状语从句

引导词：than, so/as…as, the more…the more…

I have made a lot more mistakes than you have.

我犯的错误比你犯的错误多。

The busier he is, the happier he feels.

越忙他觉得越快乐。

九、方式状语从句

引导词：as, as if/though, the way, rather than

You must do the exercise as I show you.

你必须按照我教你的去做练习。

He acted as if nothing had happened.

从他的举止行为看，似乎什么也没发生过。

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