This document discusses how to ask about someone's hobby in Japanese. The phrase "しゅみはなんですか" means "What is your hobby?". You can also ask about other people's hobbies by using the possessive particle "の", such as "せんせいのしゅみはなんですか" meaning "What is the teacher's hobby?". The document provides examples of asking if someone's hobby is a particular activity by adding the question marker "か" to the end of a statement.