与你无关；It's none of your business. 关你什么事
示例
A：You have drunk too much. Stop, let's go home.
B：Not your business!
A：你喝太多了，别喝了，回家。
B：要你管？
A：How can you be so teasing?
B：Not your business.
A：你怎么能这么嘲笑人家？