简单的说when while as 的区别：例如as表示同时发生,he is singing as he is riding his bike

as when while 的区别 When While As 的用法 when ,while,as的区别 简单的说when while as 的区别：例如as表示同时发生,he is singing as he is riding his bike while,as soon as,when的区别 as/since/until/when/while的区别 as when while since的区别 when、while、as、whenever的用法区别 When while as的区别和用法 when、while、as、whenever的用法区别 as,when,while,的用法我是中学生 while,when ,just as 的区别 as,when,while的区别是什么 When while as的区别和用法 求when,while,as用法的区别! when 和 while ,as的区别 简单点说明白while和when的不同,怎么用 while,when,as 引导时间状语从句,尤其是过去进行时的区别.要简单易懂的,常用的.