作业帮when while as 区别
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/17 22:33:17
when while as 区别
when,as,while这三个词都可以引出时间状语从句,它们的差别是：when 从句表示某时刻或一段时间,有“当……时”的意思；
as 从句表示进展过程,有“随着,一边……一边”的意思；
while 只表示一段持续的时间,有“在……的同时”的意思.
例如：
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.
While she was typing the letter,the telephone rang.
当她在用打字机打那封信时,电话响了.
as 从句表示进展过程,有“随着,一边……一边”的意思；
while 只表示一段持续的时间,有“在……的同时”的意思.
例如：
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.
While she was typing the letter,the telephone rang.
当她在用打字机打那封信时,电话响了.