Polite Questions for Nouns and Adjectives

The ending ですか is the standard way to turn a polite noun or adjective sentence into a question in Japanese.

The ending ですか is the standard way to politely ask about identity, descriptions, or states. Instead of changing the word order as you do in English, you simply take a polite sentence ending in です and attach the question particle か to the end.

The structure A は B ですか is the foundation for basic questions. A is the topic and B is the identity or description being confirmed. This pattern is often translated as asking if A is B, but Japanese structure works differently because です functions as a state or identity expression rather than an action verb.

You can use ですか after several types of words. When asking about identity or facts, the word before ですか will be a noun. When asking for descriptions, you can use an adjective. For na-adjectives, use the adjective without its な ending. For i-adjectives, the word connects directly to ですか without changes. When used after an i-adjective, です simply marks politeness because i-adjectives already behave like predicates on their own. In all these cases, the phrase remains in the polite register.

While the formula A は B ですか is the full structure, spoken Japanese frequently drops obvious information. If you are asking if someone is a student, saying あなたは学生ですか can sound overly explicit. Instead, you simply say 学生ですか, which asks if they are a student while the topic is entirely understood from the situation.

A crucial rule is that ですか is used after nouns, na-adjectives, and i-adjectives, but not after action verbs. To ask a polite question using an action verb, you must use the verb's ますか form instead. Finally, while the particle か marks the sentence as a question, it is generally spoken with a rising intonation.