1.Mind your own business. 少管闲事

2.talk business.谈正经的

3.That's no business of yours. 不关你的事

4.make business of 以...为业

5.on business 公差

6.What a business it is!真难办

7.dark business诡秘勾当

8.come to business (=get down to business) 开始干正事; 言归正传

9.Go about your business! 去你的吧!

10.monkey business 胡闹; 捣鬼;

11.That's no business of mine.不关我的事。

12.What is your business ? 你来干什么?