学好状语从句的关键就是熟练掌握各类引导词的用法，而状语从句往往数量多，每类从句又拥有大量的引导词，既不容易记忆，又容易混淆，所以这次沪江小编就先为大家整理了条件状语从句的各类引导词，大家记得认真看哦！
条件状语常用的引导词是if和unless，但除了这两个以外，条件状语从句也拥有一些其他的引导词，这些引导词出现频率较低，用法偏复杂，所以不如if和unless知名度那么高。
1. on condition(that)...在……条件下
eg.I can tell you the truth on condition that you promise to keep a secret.
You can eat ice cream on condition (that) you won't eat too much.
2. supposing conj.如果，假如
eg.Supposing it rains,shall we continue the sports meeting?
Supposing anything should go wrong,what would you do then?
3. provided conj.假如，除非，以……为条件 provided (that) +从句表示一种假设条件。
eg. He will sign the contract provided we offer more favorable terms.
He won't be against us in the meeting provided that we ask for his advice in advance.
for 若非，要不是
eg.But for the rain,we should have a pleasant journey.
But for your help,we should not have finished in time.
5. in case 如果，万一
eg.In case I forget, please remind me about it.
6. as/so long as 只要
eg.As long as you’re happy,it doesn’t matter what you do.
As long as it doesn't rain, we can go.
以上就是沪江小编给大家做的条件状语从句的引导词总结归纳了，不知道大家有没有有所收获呢？这些引导里有不少都是意思相近的同义词，大家不妨经常尝试着用用，既能提高语法水平，也能增强句子的词汇丰富度，给人耳目一新的感觉。