常用的从属连词：
（一）引导时间状语从句的连词有：when, while, since, until, after, before, as soon as
1．when当……时
When we got there, the meeting had begun.我们到时，会议已经开始了。
It was raining when she arrived at the station.她到达车站时，正在下雨。
2．while正当……时，正在……时。（while引导的初中英语语法练习题从句中，谓语动词必须是延续性动词，且常常用进行时。
Don’t make any noise while others are reading.别人读书时不要制造噪音。
She sang while she was walking. 她边走边唱。
3．since自从
It’s just a month since we arrived here.我们 到这儿刚好一月了。
My mother has been ill since I left home.自从我离开家我妈妈就一直生病。
4．until直到……为止
Until you told me, I knew nothing at all about it.在我告诉我之前，我对此之外无所知。
He didn’t appear until the meeting had begun.直到会议开始他才露面。
5．before在……之前
after在……之后
I’ll phone you after I arrive.我到达之后给你打电话。
Say goodbye before you go.你走之前要说再见。
6．as soon as一……就
I’ll visit you as soon as I come back.我一回来就去拜访你。
Please tell him as soon as you see him. 你一看见他就请告诉他。
（二）引导原因状语从句的连词：because, since, as, for, now that
1．because因为 ( because与so不能并用。)
I can’t beli eve in him because he isn’t honest. 我不能信 任他，因为他不诚实。
She didn’t come because she didn’t know it. 她没有来，因为她不知道。
2．since既然
Since he says so, it must be true.既然他这么说，那一定 是真的。
Since you ask, I will tell you. 你既然问，我就告诉你。
3．as因为 ，由于
As we are hungry, let’s have supper. 由于大家饿了 ，我们就吃晚饭吧。
Mother began to worry about my brother as it was getting dark.
由于天越来越黑，妈妈开始为哥哥着急。
4．for因为
We can't go for it is raining. 我们不能走，因为正在下雨。
I enjoyed myself at the party for I knew all the guests well.
我在晚会上玩得很尽兴，因为英语记单词方法所有的个人我都很熟悉。
5．now that既然
Now that he is unhapp y, let’s leave him alone. 既然他不高兴，我们就让他自己呆着吧。
Now that she feels sorry, please forgive her. 既然她很后悔，就请原谅她吧。
（三）引导结果状语从句：so…that, such…that
1．so…that 如此……以致
She is so tired that he can’t go any further. 她太累了，不能再走了。
She is so big a cat that she can’t get into the hole. 这猫太大了钻不进这洞。
2．such…that 如此……以致
It’s such a beautiful place that I wouldn’t come back.这地方太美了，令我留恋返。
It’s such a fine day that many people go to the park for fun.
天气这么好，许多人都到公园里来玩乐。
（四）引导目的状语从句的连词：so that, in order that以便
They hurried so that they can get there on time.他们加快了速度，为的是能够按时到达。
I hired a boat in order that I can go fishing.为了去钓鱼，我租了条小船。
（五）引导比 较状语从句的连词：than, as…as
He is taller than his brother. 他比他兄弟高。
She could draw as well as her teacher. 她能画得跟她的老师一样好。
（六）引导让步状语从句的连词：though, although （though与although的用法基本一样）
Although it rained hard, he still went out.尽管雨下得很大，他还是出去了。
Even though I have enough time, I don’t want to go there with him.
尽管我有时间，可我并不想跟他去那。
文章来源 http://danci.guyuenglish.com/1/news/5309.html
