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吗 (ma): The Yes-No Question Particle in Chinese

ma is the simplest piece of Chinese question grammar: put it at the end of any statement and you have a yes-no question, with no change of word order and no auxiliary verbs. 你去 (you're going) → 你去吗? ma? (Are you going?). It is unstressed (neutral tone), always sentence-final, and it asks neutrally — the speaker genuinely doesn't know the answer.

The basic pattern: statement + 吗

  • 他是学生吗? shì xuésheng ma? (Is he a student?)
  • 你认识他吗? rènshi ma? (Do you know him?)
  • 这件事你知道吗?Zhè jiàn shì zhīdào ma? (Do you know about this?)
  • 你吃饭了吗? chī fàn le ma? (Have you eaten?) — the classic Chinese greeting

There is no inversion and no "do": the statement stays exactly as it is, and 吗 does all the work.

Where 吗 must NOT be used

吗 belongs only to yes-no questions built on a plain statement. Two common question types exclude it:

  • The A-not-A question already contains its own yes/no choice, so adding 吗 is wrong: 你去不去? ? (Are you going or not?) — never 你去不去吗?
  • Wh-questions (who / what / where / when) use a question word instead: 你去哪里? nǎlǐ? (Where are you going?) — never 你去哪里吗?

A useful rule of thumb: if the sentence already contains a question element (不…不, 谁, 什么, 哪里, 怎么…), leave 吗 out.

The rhetorical 吗

On a statement whose answer is obvious, 吗 makes a rhetorical question — often with a sting of denial or sarcasm:

  • 你以为这很容易吗? yǐwéi zhè hěn róngyì ma? (You think this is easy?) — meaning: it very much isn't
  • 他是那种会放弃的人吗? shì zhǒng huì fàngqì de rén ma? (Is he the type to give up?) — meaning: obviously not

Even the tiniest sentences shift meaning with it: 就你呀 jiù ya (it's you — approval, you're the one) versus 就你吗?jiù ma? (you? — doubt or disdain, or "only you?").

吗 vs 吧 vs 呢: three question endings

ParticleThe question it asksExample
neutral yes-no — I don't know the answer你吃饭了吗?(Have you eaten? — genuinely asking)
I already guess the answer — confirm it你吃饭了吧?(You've eaten, right?)
wh-questions, follow-up questions, "and…?"我吃了,你呢?(I've eaten — what about you?)

Choosing among the three is choosing how much you already presume: 吗 presumes nothing, 吧 presumes an answer, 呢 bounces the topic.

Frequently Asked Questions

How do I ask a yes-no question in Chinese?

Add 吗 to the end of the statement, changing nothing else: 你去吗? (Are you going?), 他是学生吗? (Is he a student?). Alternatively, use the A-not-A pattern (你去不去?) — but never both together.

Why is 你去不去吗 wrong?

The A-not-A form 去不去 is already a complete yes-no question; 吗 marks a statement as a question, so combining them doubles the question marking. Use either 你去吗? or 你去不去?

Can 吗 be used with question words like 什么 or 哪里?

No. Wh-questions carry the question in the question word itself: 你去哪里? (Where are you going?). Adding 吗 to them is ungrammatical. To soften a wh-question, Chinese uses 呢 instead: 你去哪里呢?

What tone is 吗?

Neutral tone — short and unstressed, like all Chinese sentence-final mood particles. The character 吗 with a rising tone () appears only in 干吗 ("do what / why").

Does 吗 ever mean anything other than a question?

Its one job is to mark yes-no and rhetorical questions. In rhetorical use the sentence looks like a question but asserts the opposite: 你以为这很容易吗? — "this is not easy at all."

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