No neutral question particle

Understanding how Cantonese forms yes-no questions requires a shift in mindset if you are used to languages with a single question particle like Mandarin 嗎 (ma).

1. Why isn't 呀 (aa3) a question particle?
Learners often mistake 呀 (aa3) for a question particle because it frequently appears at the end of questions. However, 呀 (aa3) is actually a general utterance particle used across all sentence types—including statements, imperatives, and Wh-questions—to soften the tone and reduce abruptness. In these specific structural patterns, the question force itself comes from the structure rather than 呀 (aa3). Note that while the same character 呀 is used to write actual question particles like 呀 (aa4), the mid-level 呀 (aa3) itself does not turn a statement into a question.

2. Core Question Structures in Cantonese:

• Verbs: Use V-唔-V like 食唔食 (sik6 m4 sik6), literally 'eat or not eat?', which translates to the standard English question 'Are you eating?' or 'Do you eat?'. For two-syllable verbs, Cantonese commonly uses the A-唔-AB form (like 鍾唔鍾意 zung1 m4 zung1 ji3, literally 'like or not like?', which means 'Do you like it?'). The full AB-唔-AB form (like 鍾意唔鍾意 zung1 ji3 m4 zung1 ji3) is also perfectly grammatical and understood, though it can sound a bit heavier, so A-唔-AB is often preferred in casual speech. For Verb-Object (VO) compounds, the structure is V-唔-VO (e.g., 食唔食飯 sik6 m4 sik6 faan6, 'eat or not eat rice?', meaning 'Are you eating?'). Note that the main A-not-A structure is generally neutral and used when the speaker has no expectation of the answer. If the speaker is surprised or expects a specific answer, they often use a particle (like 呀 aa4, 咩 me1, or 呵 ho2). However, short A-not-A forms can also be used at the end of a sentence as tag questions (like 係唔係 hai6 m4 hai6) to seek confirmation for an expected answer. Crucially, the verb 有 (jau5) is a strict exception to the V-唔-V rule; you must use 有冇 (jau5 mou5) instead of 有唔有.
• Adjectives: Use Adj-唔-Adj like 忙唔忙 (mong4 m4 mong4), literally 'busy or not busy?', which translates to 'Are you busy?'. For two-syllable adjectives, the standard pattern is A-唔-AB, like 舒唔舒服 (syu1 m4 syu1 fuk6, literally 'comfortable or not?', meaning 'Is it comfortable?'). Note that degree modifiers like 好 (hou2) must be dropped when forming these questions (e.g., you cannot say 好忙唔好忙 hou2 mong4 m4 hou2 mong4).
• Modal Verbs: Use V-唔-V like 會唔會 (wui5 m4 wui5), literally 'will or won't', which translates to 'Will you?'. Two-syllable modals follow the same A-唔-AB preference, such as 可唔可以 (ho2 m4 ho2 ji5, 'can/cannot'). Crucially, when an auxiliary or modal verb is present, the A-not-A structure applies to the auxiliary, not the main verb. For example, to ask 'will you eat?', the correct form is 會唔會食 (wui5 m4 wui5 sik6), while 會食唔食 (wui5 sik6 m4 sik6) is incorrect.
• Possession / Past action: Use 有冇 (jau5 mou5) like 有冇睇 (jau5 mou5 tai2, 'did you watch?'). This focuses on whether the event happened in the past. Remember, 有 (jau5) never takes 唔 (m4), so 有唔有 is always incorrect.
• Completed / Experiential action: Use V-咗...未? like 食咗飯未？ (sik6 zo2 faan6 mei6?, literally 'ate rice, or not yet?', which translates to 'Have you eaten yet?'). The word 未 (mei6) means 'not yet'. Similarly, for experiential actions ('Have you ever...?'), use V-過...未? (V-gwo3... mei6?), such as 去過未？ (heoi3 gwo3 mei6?, 'have you ever been?'). This focuses on the current completion or experience status of an action, whereas 有冇 focuses on if it happened at all. This helps explain why the general negator 唔 (m4) cannot be used here. Note that the perfective aspect marker 咗 (zo2) is incompatible with 唔 (m4) in A-not-A questions. Mandarin speakers should be careful not to force aspect markers into this structure (e.g., never say 食咗唔食 sik6 zo2 m4 sik6). To negate a completed or past action, you must drop 咗 (zo2) and use 冇 (mou5) instead (e.g., 冇食飯 mou5 sik6 faan6, 'didn't eat rice').
• Whole clauses / Confirmation: Use 係咪 (hai6 mai6), which is a spoken contraction of 係唔係 (hai6 m4 hai6), at the start, before the verb, or at the end as a tag question ('Is it the case that...?').
• Suggestions / Modal tags: Use 好唔好 (hou2 m4 hou2) ('shall we?') or 得唔得 (dak1 m4 dak1) ('is that okay?').

3. Rising Intonation:
One of the most common ways to ask a yes-no question without a particle is simply applying a high rising pitch to the end of a declarative statement. For example, 你食咗飯？ (nei5 sik6 zo2 faan6?) with a rising intonation turns the statement 'You have eaten' into the question 'Have you eaten?'.

4. How to Answer Yes-No Questions:
While Cantonese doesn't have a single universal word for 'yes' or 'no', it relies heavily on echo answers. The correct answer depends entirely on the structure used in the question:

• 係咪 (hai6 mai6): Answer with 係 (hai6, 'yes') or 唔係 (m4 hai6, 'no').
• 有冇 (jau5 mou5): Answer with 有 (jau5, 'have/did') or 冇 (mou5, 'haven't/didn't'). Never say 唔有 (m4 jau5)!
• V-咗...未 (V-zo2... mei6): Answer with V-咗 (V-zo2, 'have done') or 未 (mei6, 'not yet'). Do not negate the verb with 唔 (m4) here, as that means 'won't do' rather than 'haven't done'.
• V-唔-V / Adj-唔-Adj: To say 'yes' to a verb question, repeat the verb (e.g., 食 sik6, 鍾意 zung1 ji3). To say 'no', negate it with 唔 (m4) (e.g., 唔食 m4 sik6, 唔鍾意 m4 zung1 ji3). For adjective questions, while degree modifiers are dropped in the question, they must usually be added back in a positive answer (e.g., 係呀，好忙 hai6 aa3, hou2 mong4) because bare adjectives in Cantonese statements often sound incomplete or imply a comparison.

5. Tone nuance: 呀 (aa3) vs 呀 (aa4)
Be mindful of tone! Mid-level 呀 (aa3) softens an open question, whereas low-falling 呀 (aa4) attached to a statement expresses surprise or seeks confirmation based on an observation ('Oh, so you are going?').