1.时间状语从句
when,while,as,before,after,as soon as,since,until,whenever,once,now that
While the meeting was going on , Tom in.
2.条件状语从句
if,unless, supposing/supposed, providing/provided that, even if ,in case,as long as, granted, on condition that, whether...or 等引导
If I were you, I would do it right now.
I will go to the park on Sunday unless it rains.
Supposing that he proposes to you ,will you agree.
Suppose she finds out, what shall we do then?
I will go provided that my expenses are paid.
I will agree to go providing （that）my expenses are paid.
I will wash the dishes, providing you cook the meal.
Modern agriculture methods damage the environment, but providing food for the growing population around the world is more important than protecting the environment.
现代农业种植方法虽然污染了环境，但提供的食物却养活了不断增长的人口，养活人口重要还是保护环境重要?
I will wait for you as long as you promise me you will come.
Close the window in case it rains.
Even if he is a relatuve of mine, I am going to expose him.
I will lend this book to you on condition that you do not lend it to anyone else.
Granted he is not competent enough, he is at least hard_working.
Wheather young or old, we should persist in learning.
3. 目的状语从句
由that,so that, so that,lest,for fear that, in case 等引导
Shut the window for fear that it may rain.
4.结果状语从句
so that,so...that,such...that,that 等引导
He is such a charming guy that so many girls like him.
5. 原因状语从句
由because,since,as,in case等引导
I was absent because I was ill.
6. 让步状语从句
althought,though,while,whereas等引导
Although I was very tired, I still help him do the homework.
7. 方式状语从句
as, like, as if, as though 等引导
Do it like I do.
8. 地点状语从句 where, wherever,anywhere
Wherever you go, I will be right waitiing for you.
9. 比较状语从句 than, as 引导
He earned more than wife.
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