让步状语从句的引导词有: though/although/while, as, even if/though(即使), however, whatever, no matter how/what/where/when…(不管怎样/什么/哪里/何时), whether…or(不管是…还是…), granted that(即使), for all that(尽管如此),in spite of the fact that(尽管)=regardless of the fact that
Despite, in spite of, for all也表示“尽管”,但后面只能接名词结构,不可接从句
Although/though不能和but连用, 可以和yet连用
No matter+疑问词(who, what, where, when, how)引导让步状语从句,表示“无论,不管(谁、什么、哪里…)”,=疑问词+ever
While引导让步状语从句时,只能放在句首,意义上相当于although
As和though引导的让步状语从句通常用倒装结构,as必须用倒装结构; though可用也可不用倒装。这种倒装通常是把从句中的表语、状语、或谓语动词放在句首。作表语的名词前如有不定冠词a/an, 在倒装结构中,前面不能再加冠词。E.g. Fool as he is, Tom couldn't have done such a thing.