Formal:
* คุณคืออะไร? (koon khue arai?) - This is the most formal way to ask "What are you?" and is usually used when addressing someone with respect.
Informal:
* เธอคืออะไร? (tur khue arai?) - This is a more informal way to ask "What are you?" and is usually used when talking to someone you know well.
* นายคืออะไร? (nai khue arai?) - This is an informal way to ask "What are you?" and is usually used when talking to a male friend.
* เธอเป็นอะไร? (tur pen arai?) - This is another informal way to ask "What are you?" and is usually used when asking someone about their profession or occupation.
Specific contexts:
* คุณเป็นอะไร? (koon pen arai?) - This means "What's wrong?" and is used when someone is feeling unwell.
* คุณเป็นใคร? (koon pen khrai?) - This means "Who are you?" and is used when asking someone their name or identity.
It's important to choose the right translation depending on the context and your relationship with the person you are speaking to.