让步状语从句

although, though; even if ,even though; as, while(尽管); whether...or(不论...还是...); no matter who, whoever; no matter when, whenever; no matter how, however; no matter what, whatever.

结果状语从句

so... that, such... that（如此...以至于），so that（结果）等。 目的状语从句

in order that, so that(为了); for fear that, in case, lest(以免)等。

二.重点，难点

1． 时间状语从句

⑴ when 的用法

① When 引导的时间状语从句的谓语动词可以是延续性的，也可以是非延续性的，既可以是从句动作与主句动作同时发生，也可表示从句的动作先与主句动作发生。

When he reached home, it was getting dark. (主从句动作同时发生)

I shall tell her the good news when she comes. (从句动作先于主句动作发生)

② when 还可以做并列连词，表一个动作即将或正在进行的时候，突然发生了另外一件事。其意义为"那时""这时"，相当于 at this\ that time

　　We were having a meeting when someone broke into.

　　We were about to go out, when it suddenly began to rain.

③ when 还可表原因"既然"

　　It was foolish of you to take a bus when you could easily walk there in five minutes.

⑵ while的用法

① while 引导的从句谓语动词为延续性的，表示"与......同时""在......其间"从句常用进行时态，强调某一时间内主句和从句的动作同时发生。

Someone knocked at the door, when (while) I was watching TV.

Strike while the iron is hot.