[英文]Diamonds, as they are first mined, do not look very impressive.

题目

[英文]Diamonds, as they are first mined, do not look very impressive.
[意思]钻石刚开采时并不光彩照人

这里 as 能不能用 when ?

答案

不能
当主句、从句动作同时进行,从句动作的时间概念淡化,而主要表示主句动作发生的背景或条件时,只能用 as.