什么是让步状语从句有哪些用法

让步状语从句的用法有：

1、though, although表示“虽然，纵然”之意, although比though正式，二者都可与yet, still或never,the less连用，但不能与but连用

eg. Although/Though he was exhausted, (still) he kept on working.

2、as, though表示“虽然……但是”，“纵使……”之意。as引导的让步状语从句必须以部分倒装的形式出现,被倒装的部分可以是表语、状语或动词原形。

eg. Object as you may, I’ll go.(=Though/Although you may object, I’ll go.)

3、even if, even though 表示“即使……”,“纵使……”之意, 表示假设，even if引导的让步从句含有强烈的假定性,可用来表示与事实相反的假设,但不能用来描述已经发生的事实.而even though引导让步状语从句时,是以从句的内容为先决条件的`,即说话人肯定了从句的事实,表示已经发生了的事.

eg. We’ll make a trip even if the weather is bad.

We made a trip even though the weather was bad.

4、...表示“不论是否……”,“不管是……还是……”之意。

eg. Whether you believe it or not, it's true.

5、“no matter+疑问词”或“疑问词-ever”的含义为“……都……；不管……都…"。

eg. No matter what happened, he would not mind. (=Whatever happened, he would not mind.)