这是as引导的让步状语,有下面这几种用法1.形容词 + as + 主语 + 系动词.如：Tired as he is,he offers to help me.尽管他已经很累了,他还是主动提出帮助我.2.过去分词 + as + 主语 + 系动词.如：Well-written as the...