Translation guide
In Japanese, questions are primarily marked by the sentence-final particle か (ka) in formal/polite speech, while casual speech often uses rising intonation or the particle の (no). This guide covers how to form questions naturally.
The speaker wants to ask a question in a polite or neutral setting.
The speaker wants to ask a question in a casual conversation.
Add の to the end of a casual sentence to ask a question, often with rising intonation. Common in informal speech.
In very casual speech, simply raising the intonation at the end of a statement can turn it into a question. Often used among close friends.
Without context, this can sound blunt. Use with close friends or in informal situations.
Coming tomorrow?
A casual, somewhat masculine question particle. Softer than plain rising intonation but still informal.
You doing okay?
The speaker wants to embed a question within a larger sentence, such as 'I don't know what it is.'
Use か after the embedded question clause. No question mark is used in writing.
I don't know what that is.
Do you know whether he will come?
Used for yes/no embedded questions, meaning 'whether or not'.
I haven't decided whether I'll go or not.
The speaker uses a question form to make a statement, not to seek an answer.
Using か in casual speech can sound overly blunt or masculine. Instead, use の or rising intonation.
Question words like 何 (what), 誰 (who), どこ (where) are often used with か to form questions. In polite speech, ですか follows; in casual speech, なの？ or just the question word with rising intonation.
Who's coming?