请问while和just as用法上有区别吗?

问题描述:

请问while和just as用法上有区别吗?
还有when,这三个都一样吗,他们有区别吗

just as是“正当...”的时候,也有“正像...”的意思while 当...的时候(有时有转折意味)He was playing game while the others were doing their homeworks.这里while表示同时性,也是前后两者的对比,翻译时可理解为...