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