set off,set about,set out 的用法和区别?

问题描述:

set off,set about,set out 的用法和区别?

(1)set off出发;【set off for a place出发到某地】【set off from...to..从...出发到】动身;使爆炸,引起;
(2)set about一般意为开始(做某事)set about doing sth=set out to do sth(开始,着手于做某事)
(3)set out出发,动身,着手 安排