状语从句可分为：
时间状语从句、 地点状语从句、
原因状语从句、 目的状语从句、
结果状语从句、 条件状语从句、
让步状语从句
状语从句有其相对独立的一套连词，连词本身带有自己的意思。
一. 时间状语从句
引导时间状语从句的从属连词很多，如较基本的有before, after, when, while, as, since, till, until, as soon as
此外还有有一些（杂牌）连词，也能起连接句子的作用，如：the moment, the minute, the second, immediately, directly, instantly, once，no sooner…than, hardly…when[一……就]; every time(每次)，each time(每次), the first time(第一次)
eg: Immediately he came I told him the news. 他一来我就把消息告诉了The moment I saw him I knew there was no hope. 我一看到他就知道没希望了。
He felt nervous each time she spoke to him. 每次她和他讲话，他都感到紧张。
※ 时间状语的一些常见结构
1. … was/were doing … when …
…was/ were about to do … when…
was/were on the point of doing…when
2. It was/will be +段时间+before
①(肯定句) 过多久… 就/才
②(否定句) 不久…就/才
eg: It will be one year before we graduate from middle school.
3. It is+段时间+since +句子(一般过去时)
① (短暂动词) 自…以来已经多久了
② (延续动词)自...以来过久没… 了
eg: It is six years since I graduated.
4. It is + 时间点 + when …
当……时已是 …..时间了
二. 条件状语从句引导条件状语从句的从属连词主要有 if, unless, as [so] long as, in case, if only等。
eg: Don’t come unless I telephone.
除非我打电话，否则你别来。
If you watch carefully you will see how to do it.
如果你仔细瞧你会看出该怎样做。
As long as you do your best, we’ll be happy. 只要你尽力，我们就满意了。
If only(==I wish) I were a bird.
三. 让步状语从句
1. 引导让步状语从句的从属连词主要有 although, though, however (=no matter how), even if(即使), whether…or(不论…还是), whatever, whoever, whenever, wherever [no matter what/who/how/where] 等引导让步状语从句。如：
eg: Although he is poor, he’s still happy. 虽然他很穷，他仍然很快乐。
I will try it, though I may fail. 即使我可能失败, 我也要试一下。
I’ll do it whether you like it or not. 不管你是否喜欢，我都要做。
※ as 也可引导让步状语从句，但句子语序特殊，要将名词、形容词或副词等提到 as 前，若提前的是单数可数名词，要省略 a / an。如：
eg: Young as he is, he knows a lot.
Teacher as he is, he can’t know everything. 虽然是老师，他也不可能什么都懂
四. 原因状语从句
1. 引导原因状语从句的从属连词主要有because, as, since, seeing (that), now (that), for等：
eg: They can’t have gone out because the light’s on. 他们不可能出去了，因为灯还亮着。
Since you are going, I will go.
既然你去，我也去。
Now that we are alone, we can speak freely. 现在我们单独在一起，可以随便谈了。
五. 地点状语从句
引导地点状语从句的从属连词主要有where (在…的地方), wherever(无论什么地方), everywhere(每个…地方), anywhere(任何…地方)。如：
eg: Where there is a river, there is always a city.
I’m not living where I was. 我不在原处住了。
没有with引导的从句，而是with由它自己的用法
http://cet.iciba.com/200905/1476.html
你自己看看他的用法
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