as和when引导时间状语从句的区别
when 从句表示某时刻或一段时间；
as 从句表示进展过程,
When he left the house,I was sitting in the garden.
当他离开家时,我正在院子里坐着.
When he arrived home,it was just nine o\'clock.
当他到家时,正是九点钟.
As he grew older,he became more intelligent.
随着他年龄的增长,他变得更有才智了.
水利万物而不争,
而万物莫能与之争。
