首先，while 在这确实是引导让步状语从句，表 尽管as作连词有以下的用法：当。。。。He sat watching her as she got ready.以某种方式They did as I had asked.表原因She may need some help as she’s new.正如As you know, Julia is leaving soon.尽管，与though同义:例句如下，特定用法：Happy as they were, there was something missing. Try as he might , he couldn’t open the door....
