1.时间状语从句（adverbial clauses of time）,多由连词引起。
（when,after,before,as,as soon as,as long as,since,whenever,once）
E.g. When we lived in town we often went to the theater.
It was a long time before I got to sleep again.
As the sun rose the fog dispersed(vt. 消散).
（now that,every time,each time,the moment,immediately,instantly,directly）
E.g. Directly he uttered(vt. 说出)these words, there eas a dead silence.
I had no sooner checked in the hotel than he arrived.
2.地点状语从句（adverbial clause of place）
E.g. The church was built where there had once been a roman temple(n.寺庙).
Everywhere I go, I find the same thing.
3.方式状语从句（adverbial clause of manner）,一般由as，like，as if引起。
E.g. I am as you can image short of money. 正如你能想象的那样，我很缺钱。
I did as she asked.
Do it as he does.
I feel just like I did when I was a boy.
I remember the whole thing as if it happened yesterday.
He glanced about as if in search of something.
4.原因状语从句（adverbial clause of reason), 一般由because,as,since,in case,还有两个词有相同的意思（seeing,considering）
E.g. He was angry because we were late.
As the soup was very salty, we were thirsty afterwards.
He took a spoonful(n.满满的一勺) and tasted it in case it was hot.
Seeing that it is ten o’clock, we shall not wait for her any longer.
5.条件状语从句，一般由if，unless,supposing, providing,as long as, granted that引起。
E.g. We sat on the grass if it was fine.
If I could afford it, I would buy a boat.
If necessary, ring me at home.
Supposing he can’t come, who will do the work?
6.让步状语从句（adverbial clause of concession）,主要由although, though, even though, while,whereas。
E.g. Though we are poor, we are still happy.
Some praise him, whereas others condemn him.
Though not large, the room was well lit.
7.目的状语从句和结果状语从句（adverbial clause of purpose and adverbial clause of result),主要由so that,such that, in order that,otherwise,else.
E.g. Let’s take the front seats that we may see more clearly.
Give me back the money, otherwise I’ll ring the police.
Hurry up or else you’ll be late.(赶快，否则你就会迟到了。)
8.比较状语从句（adverbial clauses of comparison）,主要由than ,as 引起。
E.g. You sing better than I do.
I haven’t done as much as I should have liked.(我没做得像我希望的那样好。)
常用引导词：when，as，while，as soon as， before，after，since，till，untill
特殊引导词：the minute，the moment，the second，every time，the day，the instant， immediately，directly，no sooner... than， hardly... when，scarcely... when
例：No sooner had I arrived home than it began to rain.
例：Wherever you go, you should work hard.
特殊引导词：seeing that（由于，因为），now that（既然，由于），in that（既然，由于）considering that（考虑到……，就……而言）given that （考虑到）
例：Now that everybody has come, let's begin our conference.