How do you do?

您好。

But if you go to the eastern provinces, or go to some country areas.

但是如果你到东部的一些省或到乡下的一些地区去的话。

What do you think I should do then?

那您认为我该怎么做呢？

Check the prices before you decide whether to buy one.

先把价格核对一下，再决定该不该买。

What did he do?

他是干什么的？

No, sir, I always walk this way.

不，先生，我一直是这样走路的呀！