状语从句是指充当状语的句子，可以修饰谓语、非谓语动词、定语、副词或全句。最终，摆在第一位，放在第二位，第一件事，第二件事情，第三件，也就是我最不想做的事，就是好好地把钱。
1、条件状语从句：

常用引导词：if, unless,
特殊引导词：as/so long as（只要）, only if, providing/provided that（倘若）, supposing that（倘若）, in case that（以防）, on condition that

eg. You can go to London as long as you have passport.
2、原因状语从句:

常用引导词：because=in that, since=now that, as, for
特殊引导词：seeing that, now that, in that, considering that, given that

eg. I 'm late because I didn't caught the bus.
3、比较状语从句：

常用引导词：as(同级比较), than(不同程度的比较)
特殊引导词：the more … the more … ; just as …， so…,no … more than; not A so much as B

eg. She is as pretty as her mother.
4、时间状语从句：

常用引导词：when, as, while, as soon as, before, after, since , till, until
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 instantly

eg.I ran into the classroom as soon as the bell rang.
5、方式状语从句：

常用引导词：as, as if, how
特殊引导词：the way

eg. He didn't so it the way his brother did.
6、地点状语从句:

常用引导词：where
特殊引导词：wherever, anywhere, everywhere

eg. Wherever the sea is , you will find seamen.
7、让步状语从句：

常用引导词：though, although, even if, even though
特殊引导词： as(用在让步状语从句中必须要倒装)，while，no matter …， in spite of the fact that, whatever, whoever, wherever, whenever, however, whichever, as if=as though
8、结果状语从句：

常用引导词：so … that, such … that
特殊引导词：such that, to the degree that, to the extent that, to such a degree that

eg. He is so young that he can't have meal by himself.
9、目的状语从句：

常用引导词：so that, in order that
特殊引导词： for fear that（唯恐/生怕），in the hope that, for the purpose that, to the end that

eg. You should book the hotel in advance so that the travel will be more easy.