九种状语从句
时间状语：when, while, before, after, until
When my dad came in, I was doing my homework.
While I was doing my homework, my dad came in.
After I had finished my homework, my dad came in.
时间先后
地点状语：Where
He traveled where I want to go.
原因状语：because, since, as
I love her because she is beautiful.
经常、正式
原因不说人家不知道
Since we don't have money, we can't buy it.
心知肚明
As it is raining, we can't go out to play.
心知肚明
目的状语：in order that, so that
I will speak slowly so that you can understand me.
条件状语：if, unless
If it doesn't rain tomorrow, we will go to the zoo.
Unless it rains, we will go to the zoo.
结果状语：so...that, such...that
Kaidi is so beautiful that everyone loves her.
Kaidi is so beautiful a girl that everyone loves her.
Kaidi is such a beautiful girl that everyone loves her.
such是限定词，后跟名词（偏正结构）
让步状语：although, though, even though, even if
He is unhappy although he has a lot of money.
I will always love you even though you are ugly and poor.
现在
方式状语：as, as if, as though, the way
He spoke as if he had witnessed it.
比较状语：than, as...as
She is as beautiful as her mother.
Bill runs faster than his brother.
