What is you thinking about?改病句

you为第二人称不能用is 要用are

What is your thinking about？
you 改成 your

What are you thinking about?
步骤：
1. You think about going shopping.
2. You are thinking about going shopping.
3. 对going shopping 部分提问，
4. 问句就是 What are you thinking about？
5. 坚定信心，别听他人瞎咧咧。

把IS 改成 ARE

人称不对。