3) 让步状语从句
　　让步状语从句主要由以下连词引导：though, although, even if, even though, whatever, however, whoever, wherever, no matter how/ what/ where/ when等。以下介绍几种较特殊的让步状语从句。

　　(1) while引导的让步状语从句多放在句首，while相当于although，表示“尽管”，“虽然”。
　　While I admit I did it, I didn’t intend to.
　　While I understand what you say, I can’t agree with you.

　　(2) 短语even now/then/so相当于though it is/was true，表示“尽管如此”，“尽管这样”。
　　The fire was out, but even so, the smell of smoke was strong.
　　I’ve tried my best, but even now/then she is not satisfied.

　　(3) as引导的让步状语从句要倒装。
　　Child as he was, he could speak four languages.
　　Hard as she tried, she failed to get the job.