do是什麼意思

例句：

A change of job would do you the world of good.

換一下工作會對你大有好處。

One major problem did present itself, though.

不過，確實出現了一個重大問題。

Someone might find out, and that would never do.

也許有人會發現，那是絕對不行的。

What do you charge for this type of work?

這種活你收多少錢？

What do you charge for work of this type?

這種活你收多少錢？