请问setout setabout setoff各是什么意思 你能为我造句子吗

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?。