一般情况下,as引导的让步状语从句,从句不用实义动词的,一般都用系动词
由as引导的让步状语从句结构:表语+as+主语+be,例如:
Child as he is,he has read a lot.
虽然他还是小孩,但他已经阅读很多了.
Late as it was,they continued the work.
虽然天色已晚,但他们仍继续工作.
Patient as he was,he had no intention of waiting for three hours.
哪怕他再有耐心,也不打算等3个小时.