二、地点状语从句
地点状语从句表示在主句中某一动作或状态发生的地点或进行的方向,这类从句通常由Where, wherever或 everywhere引导,可以放在主句前,也可以放在主句后。Where指“在某个地方”，wherever指“在任何一个地方”，everywhere指“每一?地方”, 意思与wherever相近。例如：
1) Bamboo grows well where it has plenty of rain.
2) Wherever you go, whatever you do, I will be here waiting for you..
3) Everywhere you go, I will follow you.
三、条件状语从句
1. if 和unless
if 表示正面的条件，意为“如果”，unless表示反而的条件，意为“除非，如果不”例如：
1) If you’ve got exams tomorrow, why aren’t you studying?
2) The sports meeting will begin tomorrow unless it rains.
NT：在条件状语从句中常用一般时表示将要发生的动作。
2. providing, provided (that), supposing, suppose (that), on condition that 和in case
这些连词（词组）意思相近，有“如果，只要，假如，假使，在?条件下”等意思。例如：
1) You can arrive in Beijing earlier for the meeting provided you don’t mind taking the night train.
2) On condition that the liquid is cooled still further, it will turn to a solid.
3. only if和if only
Only if 引导的从句用陈述语气，意为“只要”; if only引导从句要用虚拟语气，意为“要是?就好了”。
1) Only if you have persistence, you can achieve great success.
2) If only I had wings, I would be able to travel around the world easily.
4. where有时也可以表示条件(常用于谚语和习语)
1) Where there is a will, there is a way.（有志者事竟成）。
2) There is never peace where men are greedy.（人类贪欲不止，世界和平无望）。
3) Birth is nothing where virtue is not.（如果没有品德，出身再好也等于零）。
四、原因状语从句
1．because, since, as 和for
because 表示原因语气最强，常用于回答以疑问词“why”引导的疑问句。 because 从句一般位于主句后面。for引导的从句并
不说明主句行为发生的直接原因，只是提供一些有助于说明情况的补充说明，且不可位于主句前。since 表示一种附带的原因，或者表示已知的显然理由，意为“既然”，引导的从句常放在句首。As所表示的理由最弱，只是对主句的附带说明，重点在主句, as通常放在主句前。例如：
1) The teacher is strict with us because he wants us to make rapid progress.
2) Since you are free today, you had better help me with my mathematics.
3) As the day was fine, they decided to go on a trip.
4) It rained last night, for the ground is wet this morning.
2．seeing (that), considering (that), now (that) , in that, given (that)
这几个连词同since意思相近，都有“鉴于某个事实”的意思。例如：
1) Now that you are a big boy, you must behave better.
2) Men differ form brutes in that they can think and speak.
3) Given it is going to rain tomorrow, the sports meet will be put off to next month.
3. not…because
本结构中not否定的是because引导的整个从句。例如：
I am going on a trip tomorrow, because I have to, not because I want to.
He stole, not because he wanted the money but he liked.
五、让步状语从句
1．though, although, even if 和even though
(1) 这四个词（词组）都有“虽然，即使，尽管”的意思，even if 和even though 带有强调的意味，语气较强，though 和although 语气较弱，though 比although 通俗，但不如although 正式。让