誰 (だれ) means “who.” It is used to ask about people. You can use it with particles like が, は, に, と to ask about the subject, topic, or person involved. Key points: • 誰が = who (subject) • 誰ですか = who is it • 誰と = who with • Polite form: どなた (more formal) Example: “あの人は誰ですか” means “Who is that person?” “誰と行きますか” means “Who will you go with?” When asking politely, you can use どなた, but 誰 is common and natural in everyday conversation. Practice by asking about people around you: 誰が先生ですか, 誰と勉強しますか.