高中英语as while区别

来源：百度知道编辑：UC知道时间：2024/09/22 05:37:13

I saw her just ______ she was getting off the train.
A. as B. while
为什么选A

while表示的时间是一段，而不是一个时间点，如：While he was eating his breakfast, he heard the doorbell ring.(强调吃饭的过程）
as强调“同一时间”，或“一前一后”发生的事，
she was getting off the train就是强调她下火车的那一个时间点，而不是一段时间

just as 固定搭配

when while as 区别 as和 while 区别 as when while 的区别 when ， while， as的区别 while和as的区别 as,when,while的区别 after, as soon as, before ,until ,when, while的区别 while&as 在线等 though while since as的区别和用法谁知道as,when,while的用法的区别