1. 状语从句在句子中起状语作用的从句叫做状语从句。状语从句由从属连词引导。状语从句可分为：
时间状语从句：
When Susan goes to town, she will visit her grandma.
苏珊每次进程，总要去看望她奶奶。
地点状语从句：
I will go where I am needed. 哪里需要我，我就到哪里去。
方式状语从句：
I have changed it as you suggest. 我已经按照你的建议作了改变。
原因状语从句：
Mary didn’t go shopping because I advised her not to.
玛丽没有去购物，因为我劝她不要去。
目的状语从句：
They worked hard in order that they might succeed.
他们努力工作，以便能够获得成功。
结果状语从句：
Waste must be treated so that it does not become a danger to life.
废物必须进行处理，这样它才不会成为危害生命的东西。
条件状语从句：
If he works hard, he will surely succeed. 如果努力工作，他肯定会成功。
让步状语从句：
Though we are all different, we need never be separate.
比较状语从句：
I was happier than I had ever been in my life. 这是我一生中最快乐的时光。
