set out和set off都有出發(fā)的意思,區(qū)別:
set off更含開始(旅行、賽跑等）的意思,
例：what time are you planning to set off tommorrow?你明天打算幾點(diǎn)鐘啟程?
they've set off on a journey round the world.
他們已經(jīng)開始環(huán)游世界.
set out意思是從某地出發(fā)上路
例：she set out at dawn.她天一亮就動(dòng)身了.
另外,set out to do sth是開始／著手干某事
而,set sb off doing sth是使某人開始干某事