As long as --- 只要We will succeed as long as we keep on trying.

　　As (so) far as --- 据……所知As far as I know, he speaks English very well.

　　In case --- 假使, 如果The plane cannot take off in case it rains.

　　Provided that 如果,有时省略 thatThe plane will be in good condition provided that it is taken care of carefully.

　　On condition that --- 条件是…He said that he would come to the meeting on condition that no one asked him to speak.

　　注:主从句的动作发生在将来时，则主句用将来时, 从句用一般现在时。If he arrives tomorrow, I will be waiting for him at the airport.

　　3. 地点状语从句

　　地点状语从句只有两个连词: Where, wherever

　　Where --- 在……地方Where there is a will, there is a way.

　　Wherever --- 无论哪里Wherever you are, I will be right there waiting for you.

　　4. 原因状语从句

　　because, as, since, now that, 和considering that, seeing that 这六个连词都用于表示表示原因, 但在语气上一个比一个弱.

　　Because --- 因为,通常从句放在主句后.Mr Smith was very upset because he couldn’t find his luggage.

　　As --- 因为, 通常放在句首As he is honest and modest, all his friends like him.

　　Since ---既然 因语气较弱, 常译为既然(众所周知的原因)Since everybody has come, we can set off.

　　Now that --- 既然Now that you are here, you can join us.

　　considering that --- 顾及到Considering that they are just beginners, they are doing quite a good job.

　　seeing that --- 由于Seeing (that) quite a few people were absent, we decided to put the meeting off.

　　5. 结果状语从句

　　引导结果状语从句的连词有：that, so that, so…that…

　　such…that So… that --- 太……以至于 so 后面应用形容词或副词, 有时省略so只用thatBoeing 747 is so large that people like to call it jet bomb喷气炸弹.

　　So that --- 因而，以便，为了 有时so 可以省去Speak louder please so that the people at the back can hear you.

　　Such …that… ---太……以至于 用法与so…that相同，但such 后面应用名词。The foreign visitor was such a fast speaker that nobody could understand him.

　　6. 目的状语从句

　　引导目的状语从句的主要连词有: that, so that, in order that, for fear that, lest

　　(So) that --- 以便, 从句中常常使用一些情态动词，如：can, could, may, might, should等Let’s take the front seats (so) that we may see more clearly.

　　in order that --- 为了, 与so that 相同从句中常常使用一些情态动词，如：can, could, may, might, should等School was closed early in order that the children might go home ahead of the storm.

　　for fear that --- 生怕; 为了防止(某事发生)He took the name down for fear that he should forget it.

　　in case --- 万一You should bring a dictionary in case you need it.

　　Lest --- 以防万一The man decided to tell his boss the fact lest he would be angry with him.

　　7. 让步状语从句

　　引导让步状语从句的连词有：Although, though, as, even if, even though, no matter, however, whatever, while, whether.

　　Although, though ---虽然 although 和though 可以互换，但although 常放在句首。Though可以用于倒装。Although it was raining, the plane managed to take off.Though he did his best, he didn’t succeed.

　　As --- 尽管 as 引导让步状语从句时，句子通常倒装。可与though 互换。Busy as he is, he never misses a football match.

　　Even if /even though ---即使Even if you don’t like your boss, you should do your work.

　　However --- 不论， however 引导让步状语从句时，句子通常倒装He couldn’t get there on time however fast he drove.

　　No matter (what, when, where, how) ---无论(什么，何时，何地，怎样)He wouldn’t forgive me no matter how hard I begged him.

　　Whatever --- 不管Whatever other people may say, she won’t change her mind.

　　While ---尽管While I have sympathy for you, I can’t help you.

　　Whether ---不管，常与or not 连用Whether he is good or not, the company decided to send him abroad.

　　8. 方式状语从句

　　方式状语从句常由: as, as if, as though

　　as ---与…… 一样Do in Rome as the Romans do.

　　as if, as though --- 仿佛, 由as if或 as though引导的从句中可用虚拟语气She stood at the door as if (=as though) she were waiting for someone.