当你的朋友为一些事情担心，心事重重、焦虑不安、心神不宁的时候，你该怎么表示你的关心呢？最好是委婉的询问出了什么问题，比如，你可以用下面的方法。
1. Is something on your mind? / Do you have something on your mind? /What's on your mind? 你担心什么呢?
Be on a person's mind 意思就是“有什么挂心的事”。Note: This has a milder, easier tone but can still apply to serious problems such as job dissatisfaction or even job loss or marital problems.