1.在句子中起副词作用的子句是副词子句。

2.副词子句表示时间。

Before it gets dark, I＇ll come back.

天黑以前我会回来。

After it gets dark, the children go back home.

天黑以后孩子们回家。

I was having dinner when the bell rang.

铃响时我正在吃饭。

3.副词子句表示地点。

He asked me to stay where I was.

他让我在原处待着。

4.副词子句表示原因。

Because I need a listener, you can＇t leave now.

因为我需要一个听众，你现在不能离开。

Because it is too late, I must go home.

因为太晚了,我必须回家。

As it was dark, he lit a candle.

由于天黑,他点燃了蜡烛。

5.副词子句表示目的。

Then I will go out in order that I don＇t disturb you.

那么我将出去为了不打扰你。

I got up early in order that I could catch the train.

我起得早为了赶上火车。

6.副词子句表示方式。

You sing terriblely as my sister (does).

你歌唱得与我姊姊一样难听。

The girl sings sweetly as her sister (does).

这女孩歌唱得与她姊姊一样好听。

7.副词子句可以表示条件。

I won＇t stop sing unless I sing this song well.

除非唱好这首歌，我是不会停下来的。

A car doesn’t run automatically unless you start it.

除非你开动它,汽车是不会自动行驶的。

8.副词子句表示让步。

Their tent, though light as a feather, remained firm.

他们的帐篷虽然像羽毛一样轻,但是很坚固。

9.副词子句表示结果。

I shut the door so heavily that it fell on my head.

我关门那么重以致它掉到了我的头上。

He shut the door with such force that the glass broke.

他用那样大的力量关门,以致把玻璃震碎了。

10.副词子句可以表示比较、比例。

And you like singing more than she does.

而你比她更喜欢唱歌。

He likes his dog more than his child does.

他比他的孩子更爱他的狗。

11.副词子句可以修饰整个句子。

Her condition is, what worries me, getting worse.

令我担忧的是,她的状况变得更糟了。