set out出发 They set out on the last stage of their journey. 他们开始了旅行的最后一程. She set out at dawn. 她天一亮就动身了. set about:开始,着手 1.You must set about your work at once. 你必须立即开始工作. 2.Do you know how to set about going on this work? 你知道怎样着手进行这项工作吗? set off=set out出发 If you want to catch that train we'd better set off for the station immediately. 你要是想赶上那班火车,咱们就最好马上动身去火车站. What time are you planning to set off tomorrow? 你打算明天几点钟启程?
