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。

5．now that既然

　 Now that he is unhappy, 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

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，因为所有的个人我都很熟悉。

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。

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。

1．because因为 ( because与so不能并用。)

　 I can’t believe 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。

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　

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。

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。

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。