他有什么用英语怎么说

他有什么用英语怎么说：What is his use in English?

1. 他有什么用？- What is his use?

2. 我不知道他有什么用。- I don't know what his use is.

3. 他对我们有什么用？- What use is he to us?

4. 他有什么用处？- What is his usefulness?

5. 我们需要知道他有什么用。- We need to know what his use is.