求助sometimes,always,often,usually,的用法和区别,越详细越好,要例子~~

问题描述:

求助sometimes,always,often,usually,的用法和区别,越详细越好,要例子~~

sometimes 有时When I want to watch a film,sometimes I go to the cinema and sometimes I use the Internet.always 一般,经常(一般情况下经常做某事)We always communicate with our friends via e-mails.often...