The basic A-not-A pattern is beautifully mechanical with one-syllable words: 去不去, 好不好, 是不是. But most useful verbs and adjectives are two syllables — 喜欢 (like), 知道 (know), 高兴 (happy), 漂亮 (pretty) — and here the pattern does something that looks like sloppy speech to a beginner but is in fact the fixed native rhythm: it copies only the first syllable into the front slot. So "do you like it?" is 喜不喜欢, not the plodding full repeat. Getting this clipped shape right is one of the clearest signals that A-not-A has become second nature rather than something you assemble syllable by syllable.
The clipped form: copy the first syllable only
Take a disyllabic predicate A₁A₂. The neat, everyday form is A₁ + 不 + A₁A₂: you say just the first syllable, then 不, then the whole word again. The middle 不 is toneless (a light, quick bu), exactly as in the one-syllable pattern.
| Word | Clipped form (common) | Full form (also correct) |
|---|---|---|
| 喜欢 (like) | 喜不喜欢 | 喜欢不喜欢 |
| 知道 (know) | 知不知道 | 知道不知道 |
| 高兴 (happy) | 高不高兴 | 高兴不高兴 |
| 漂亮 (pretty) | 漂不漂亮 | 漂亮不漂亮 |
| 认识 (know sb.) | 认不认识 | 认识不认识 |
| 方便 (convenient) | 方不方便 | 方便不方便 |
你喜不喜欢喝咖啡？
nǐ xǐ bu xǐhuan hē kāfēi
Do you like drinking coffee? (informal) — clipped 喜不喜欢, the everyday shape.
你知不知道他今天请假了？
nǐ zhī bu zhīdào tā jīntiān qǐngjià le
Do you know he took the day off today? (informal) — 知不知道, first syllable copied.
这条裙子漂不漂亮？
zhè tiáo qúnzi piào bu piàoliang
Is this skirt pretty? (informal) — a real shop-fitting-room question.
The object stays whole, after the verb
Because the clipping happens entirely inside the verb, whatever object follows is untouched. 喜不喜欢 is the question-word block; the object simply comes after it, exactly as it would after a plain 喜欢.
你喜不喜欢中国菜？
nǐ xǐ bu xǐhuan Zhōngguó cài
Do you like Chinese food? (informal) — object 中国菜 sits whole after the clipped verb.
你们俩认不认识？
nǐmen liǎ rèn bu rènshi
Do you two know each other? (informal) — 认不认识 stands alone when there's no object.
现在打电话方不方便？
xiànzài dǎ diànhuà fāng bu fāngbiàn
Is it convenient to call right now? (informal) — adjective 方便 clipped to 方不方便.
The full form: 喜欢不喜欢
Repeating the whole word — 喜欢不喜欢, 知道不知道 — is never wrong. It is a touch more formal, more deliberate, and slightly more emphatic, the shape you might reach for when you're weighing the question carefully or laying real stress on it. In fast everyday speech the clipped form dominates, but you'll hear both from natives.
你喜欢不喜欢现在的工作？
nǐ xǐhuan bu xǐhuan xiànzài de gōngzuò
Do you like your current job? (neutral) — full form, a little more weighty and considered.
你到底高不高兴？
nǐ dàodǐ gāo bu gāoxìng
So are you happy or not? (informal) — 到底 presses for an answer; 高不高兴 clipped.
Why 是不是 never clips
The reason the clipping only appears with disyllabic words is trivial once stated: there has to be a first syllable to isolate. 是 (be) is one syllable, so its A-not-A is just 是不是 — there is nothing to shorten. The same goes for 去不去, 来不来, 好不好. Clipping is a property of two-syllable predicates, not of A-not-A in general.
你说的是不是真的？
nǐ shuō de shì bu shì zhēn de
Is what you said true? (informal) — 是 is one syllable, so 是不是 with nothing clipped.
Common Mistakes
1. Truncating the second copy. You may shorten the front copy, but the copy after 不 must be the full word.
❌ 你喜欢不喜？
Incorrect — the second copy stays whole. Say 你喜不喜欢？ or 你喜欢不喜欢？
✅ 你喜不喜欢？
nǐ xǐ bu xǐhuan
Do you like it? (informal) — front copy clipped, second copy full.
2. Clipping the wrong syllable. The kept syllable is the first one (喜–), not the second.
❌ 你欢不喜欢？
Incorrect — copy the first syllable 喜, not 欢: 你喜不喜欢？
✅ 你喜不喜欢？
nǐ xǐ bu xǐhuan
Do you like it? (informal) — 喜, the first syllable, goes in front.
3. Repeating the object along with the verb. Only the verb is copied; the object appears once, after the whole pattern.
❌ 你喜欢咖啡不喜欢咖啡？
Incorrect — don't repeat 咖啡. Say 你喜不喜欢咖啡？ or 你喜欢不喜欢咖啡？
✅ 你喜不喜欢咖啡？
nǐ xǐ bu xǐhuan kāfēi
Do you like coffee? (informal) — object stated once, after the verb.
4. Adding 吗 on top. Like all A-not-A, the two-syllable version is already a complete question; 吗 is redundant.
❌ 你知不知道吗？
Incorrect — 知不知道 is already a question; drop 吗: 你知不知道？
✅ 你知不知道？
nǐ zhī bu zhīdào
Do you know (or not)? (informal) — A-not-A stands alone.
Key Takeaways
- With a two-syllable verb/adjective, A-not-A normally copies only the first syllable in front: 喜不喜欢, 知不知道, 高不高兴, 漂不漂亮.
- The middle 不 is toneless, and any object stays whole after the verb: 喜不喜欢 + 咖啡.
- The full form (喜欢不喜欢) is also correct — a little more formal and emphatic.
- Never truncate the second copy (not 喜不喜) and never clip the wrong syllable (not 欢不喜欢).
- 是不是 never clips because 是 is one syllable — clipping is a two-syllable phenomenon.
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- A-not-A Questions (是不是, 去不去)HSK 1 — A second neutral way to ask yes/no: juxtapose the positive and negative of the verb or adjective — 去不去, 好不好, 是不是. The middle 不 is toneless, 有 uses 没 (有没有), and you never add 吗.
- 是不是 (shì bu shì) for ConfirmationHSK 2 — 是不是 is a movable confirmation tag — 'right? / is it the case that…?' — that sits at the front, after the subject, or at the end without being the main verb: 你是不是累了？／是不是你忘了？／你忘了，是不是？ It presupposes your guess and asks the listener to confirm it.
- Yes-No Questions with 吗 (ma)HSK 1 — The default way to ask a yes/no question: take a complete statement, change nothing, and add 吗 (ma) at the end. 你有时间吗? Answer by echoing the verb, not with a word for 'yes'.
- Verb Reduplication: The Tentative/Brief SenseHSK 2 — Doubling a verb — 看看 (kànkan), 试试 (shìshi), 尝尝 (chángchang) — softens it to 'have a quick look / give it a try / do a bit of'. It's a built-in politeness device, not a repeated action, and the second syllable drops to neutral tone.