wrong 不适的
eg:What's wrong with you?
I have a headache.
你有什么不适?---我头疼。

ill adj.生病的
eg: You look so bad. What's wrong?
l am ill.
你看起来不大好，有什么不适吗?-我生病。

stay v.保持,保留
eg: We need to keep fit.我们需要保持健康。

lesson课程
eg: Today we will learn lesson two.今天我们上第二课。

wrong v.担心，担忧
eg: Don't worry about me!不要为我们担心!