Negation 不 and 没 in Mandarin Chinese

In Brief

Use 不 (bù) for habits, states, judgments, choices, and future intentions: 我不喝咖啡 means “I don’t drink coffee.” Use 没 or 没有 (méi / méiyǒu) when an event did not happen, and use 没有 to negate 有 “to have; to exist”: 我没去 “I didn’t go,” 他没有钱 “He doesn’t have money.”

Overview

Negation is the way a language makes a statement negative: “not,” “don’t,” “didn’t,” or “haven’t.” English distributes those meanings across several helping verbs, but Mandarin normally places one negative word directly before the verb, adjective, or other predicate (the part that says something about the subject). The verb itself does not change form.

The main A1 choice is between 不 and 没(有). A useful beginner rule is that 不 rejects or denies a general situation, state, preference, habit, or intended action, while 没(有) says that an event has not occurred or that something is absent. This is often presented as “不 for the present or future, 没 for the past,” but that shortcut is incomplete. Mandarin cares less about grammatical tense than English does; the speaker’s view of the situation matters.

This distinction appears constantly in ordinary speech: saying what you do not like, what you will not do tomorrow, what did not happen yesterday, and what someone does not have. Once the basic contrast is secure, it also helps with later topics such as 了, experience with 过, result complements, and modal verbs.

How It Works

The basic contrast

Meaning	Negative	Basic pattern	Example
Habit or repeated behavior	不	subject + 不 + verb	我不抽烟。 “I don’t smoke.”
State, quality, or judgment	不	subject + 不 + adjective/predicate	今天不冷。 “It isn’t cold today.”
Identity or classification with 是	不是	subject + 不是 + noun phrase	她不是医生。 “She isn’t a doctor.”
Choice, refusal, or future intention	不	subject + 不 + verb	明天我不去。 “I won’t go tomorrow.”
Event did not occur	没 / 没有	subject + 没(有) + verb	我没吃早饭。 “I didn’t eat breakfast.”
Have not yet done something	还没 / 还没有	subject + 还没(有) + verb	他还没回来。 “He hasn’t come back yet.”
Lack of possession	没有	subject + 没有 + object	我没有车。 “I don’t have a car.”
Nonexistence	没有	place + 没有 + noun	房间里没有人。 “There is nobody in the room.”

Parentheses in 没(有) mean that 有 can often be included or omitted before an action verb: 我没去 and 我没有去 both mean “I didn’t go.” The shorter form is extremely common. When negating 有 itself, however, 没 is the negative word and the full verb remains 没有: say 没有钱, never 不有钱.

Using 不

Put 不 immediately before what it negates:

• 不 + verb: 我不吃肉。 “I don’t eat meat.”
• 不 + adjective: 这个不贵。 “This isn’t expensive.”
• 不 + 是: 那不是我的。 “That isn’t mine.”
• 不 + modal verb: 我不能去。 “I can’t go.”

Although Mandarin adjectives can act as predicates without an equivalent of English “be,” they are negated in the same position: 茶不热 is literally “tea not hot” and naturally means “The tea isn’t hot.” Do not insert 是 merely because English uses “is.”

Time words do not change the placement of 不. They normally come before the negative verb phrase:

• 我今天不工作。 “I’m not working today.”
• 明天我不去。 “I won’t go tomorrow.”
• 他以前不喝咖啡。 “He didn’t use to drink coffee.”

The last example shows why “不 never refers to the past” is wrong. Here 以前 “before; in the past” frames a past habit or state, not one missing event, so 不 is natural.

Using 没 and 没有 for events

Use 没(有) before an action to present it as not having happened or not having been completed:

• 我昨天没上班。 “I didn’t work yesterday.”
• 她没有买票。 “She didn’t buy a ticket.”
• 我们还没吃饭。 “We haven’t eaten yet.”

A time expression such as 昨天 “yesterday” often makes the intended time clear, but it is not required. In response to 你吃饭了吗？ “Have you eaten?”, simply answering 还没 “Not yet” is enough.

The particle 了 after a verb often presents an event as completed or newly realized. Ordinary event negation with 没(有) removes that verbal 了:

• affirmative: 我买了票。 “I bought a ticket.”
• negative: 我没买票。 “I didn’t buy a ticket.”

Do not build the beginner negative as 没买了票. More advanced uses of sentence-final 了 are discussed below; they do not overturn this core rule.

Negating possession and existence

有 can mean “to have” or “there is/are.” Its standard negative is always 没有:

• 我有时间。 “I have time.” → 我没有时间。 “I don’t have time.”
• 桌上有一本书。 “There is a book on the table.” → 桌上没有书。 “There are no books on the table.”

In casual answers, 没有 can stand alone: 你有现金吗？—没有。 “Do you have cash? — No.”

Pronouncing 不 and 没

没 is pronounced méi with the second tone. The dictionary pronunciation of 不 is bù, with the fourth tone. Before another fourth-tone syllable, however, 不 is pronounced bú in connected speech:

Written form	Pronunciation	Reason
不喝	bù hē	喝 is first tone
不忙	bù máng	忙 is second tone
不好	bù hǎo	好 is third tone
不去	bú qù	去 is fourth tone
不是	bú shì	是 is fourth tone

This is tone sandhi (a regular pronunciation change caused by nearby tones). The character is still written 不; only its spoken tone changes. In isolated or strongly emphasized 不, the dictionary fourth tone may be retained.

Examples in Context

Mandarin	Pinyin	English	Note
我不喝咖啡。	Wǒ bù hē kāfēi.	I don’t drink coffee.	General habit
她不是老师。	Tā bú shì lǎoshī.	She isn’t a teacher.	是 becomes 不是
这个菜不辣。	Zhège cài bú là.	This dish isn’t spicy.	Negative quality; 辣 has fourth tone
我今天不忙。	Wǒ jīntiān bù máng.	I’m not busy today.	Current state
明天我不去。	Míngtiān wǒ bú qù.	I won’t go tomorrow.	Future decision
他以前不吃肉。	Tā yǐqián bù chī ròu.	He didn’t use to eat meat.	Past habit, so 不
我昨天没去。	Wǒ zuótiān méi qù.	I didn’t go yesterday.	Event did not happen
她没有买那本书。	Tā méiyǒu mǎi nà běn shū.	She didn’t buy that book.	Full 没有 before an action
我们还没吃饭。	Wǒmen hái méi chīfàn.	We haven’t eaten yet.	还没 means “not yet”
他没有钱。	Tā méiyǒu qián.	He doesn’t have money.	Negated possession
冰箱里没有牛奶。	Bīngxiāng li méiyǒu niúnǎi.	There is no milk in the refrigerator.	Negated existence
你看见小王了吗？—没看见。	Nǐ kànjiàn Xiǎo Wáng le ma? — Méi kànjiàn.	Did you see Xiao Wang? — No, I didn’t.	Repeat 没 + verb in the answer
我不想看电影。	Wǒ bù xiǎng kàn diànyǐng.	I don’t want to watch a movie.	不 negates the wish
我没在睡觉。	Wǒ méi zài shuìjiào.	I wasn’t sleeping.	Negative ongoing action

Common Mistakes

Using 不 for one completed or missed event

• Wrong: 我昨天不去。 (when you mean that you did not go)
• Right: 我昨天没去。
• Why: A specific event failed to happen, so use 没. 我昨天不去 can instead sound like a refusal or decision viewed from a past narrative context, not a simple report of what happened.

Negating 有 as 不有

• Wrong: 我不有时间。
• Right: 我没有时间。
• Why: 有 has a fixed negative partner: 没有. This applies both to possession and existence.

Keeping completed-action 了 after 没

• Wrong: 她没买了票。
• Right: 她没买票。
• Why: 没 says the event did not occur, so the completed-event 了 after the verb is normally absent.

Using 没 with 是 for ordinary identity

• Wrong: 他没是医生。
• Right: 他不是医生。
• Why: Ordinary negation of 是 is 不是, even when English uses “wasn’t”: 他以前不是医生 means “He wasn’t a doctor before.”

Treating every past meaning alike

• Wrong: 我小时候没喜欢蔬菜。
• Right: 我小时候不喜欢蔬菜。
• Why: This describes a continuing past preference or state, not one event that failed to happen. Past habits and states commonly take 不 when the time frame is made clear.

Writing the pronunciation change

• Wrong: changing the character because bù becomes bú before a fourth tone
• Right: write 不去, pronounce it bú qù
• Why: Tone sandhi changes pronunciation, not spelling.

Usage Notes

没 or 没有?

Before an action verb, both are possible: 我没听见 and 我没有听见 both mean “I didn’t hear.” 没 is shorter and very frequent in conversation; 没有 can sound fuller or more emphatic, but it is not inherently formal. With possession and existence, learners should use the complete 没有: 没有车, 这里没有人.

Negative questions and short answers

Mandarin often answers a yes/no question by repeating its main verb or negative phrase rather than using a universal word equivalent to English “yes” or “no”:

• 你去吗？—不去。 “Are you going? — No.”
• 你吃饭了吗？—还没。 “Have you eaten? — Not yet.”
• 你有时间吗？—没有。 “Do you have time? — No.”

Questions such as 你不是学生吗？ “Aren’t you a student?” require attention: answer according to the fact, not according to whether you agree with the negative wording. 是，我是学生 confirms that you are; 不是，我不是学生 denies it.

Position with adverbs and modal verbs

The position of the negative can change what is denied. 我不一定去 means “I won’t necessarily go,” while 我一定不去 means “I definitely won’t go.” With modal verbs (words such as “can,” “want,” or “should” that modify another action), negation usually comes before the modal: 不能去 “cannot go,” 不想吃 “do not want to eat,” 不应该说 “should not say.” Learn these as complete chunks because moving 不 may alter the meaning.

Beyond the Basics / Advanced Use

You do not need to master every distinction here at A1, but these patterns explain forms you will meet later.

不 describes disposition; 没 reports realization

With some mental or modal verbs, the choice reveals a difference in viewpoint:

• 我不想去。 “I don’t want to go.”
• 我没想去。 “I didn’t intend to go / It wasn’t my thought to go.”
• 他不能来。 “He cannot come.”
• 他没能来。 “He was unable to come / He didn’t manage to come.”

In the second pair, 不能 describes inability or prohibition in the relevant situation. 没能 looks back at an attempted or expected event and says it was not realized.

没 with experience and results

The experiential particle 过 says that someone has had an experience. Its negative is 没(有) + verb + 过: 我没去过北京 “I have never been to Beijing.” Result complements—elements showing an action’s outcome—also commonly take 没 when the result was not achieved: 我没听懂 “I didn’t understand what I heard,” 他没找到钥匙 “He didn’t find the key.”

This differs from a potential complement, where 不 appears inside a fixed ability pattern: 听不懂 “cannot understand by listening.” Compare 我没听懂 “I didn’t understand on that occasion” with 我听不懂 “I cannot understand it.”

Ongoing actions and location

To deny that an action was in progress, Mandarin can use 没在 + verb: 我没在看手机 “I wasn’t looking at my phone.” But to say that a person or thing is not at a location, ordinary Mandarin generally uses 不在: 他不在家 “He isn’t at home.” The same character 在 participates in two different constructions, so the intended meaning determines the negative.

Sentence-final 了 can still occur

The beginner rule “drop 了 with 没” applies to 了 directly marking a completed affirmative event. Sentence-final 了 can instead signal a new situation or change of state, so combinations such as 现在没有了 “Now there isn’t any anymore” are possible. Here 没有 remains negative, while final 了 tells the listener that the situation has changed. Keep these two jobs of 了 separate.

Stronger and formal negatives

Common combinations build meanings beyond plain “not”:

• 从来不 + verb: “never” as a habit — 他从来不迟到。 “He is never late.”
• 从来没(有) + verb + 过: “have never experienced” — 我从来没吃过这个。 “I’ve never eaten this.”
• 并不 / 并没有: “actually not; by no means,” often correcting an assumption.
• 未: a concise written or formal negative meaning “not yet / has not,” as in 尚未决定 “not yet decided.” In everyday beginner conversation, 还没决定 is more natural.
• 无: “without; no,” common in compounds and formal notices, such as 免费 “free of charge” and 无人 “unmanned / no one present.” It is not a general conversational replacement for 不 or 没.

Practice Tips

1. Sort by meaning, not by English tense. Make two columns labeled “habit/state/choice” and “event not realized/absence.” Place short prompts such as “I don’t eat meat,” “I didn’t eat,” and “There is no food” into the correct column before translating them.
2. Practice paired sentences. Contrast 我不去 “I’m not going / I won’t go” with 我没去 “I didn’t go,” then replace 去 with five everyday verbs such as 吃, 买, 看, 做, and 学.
3. Train pronunciation aloud. Read pairs such as 不喝 (bù hē) and 不去 (bú qù). Keep writing 不, but make the tone change automatic before fourth-tone syllables.

Related Concepts

• Prerequisite: Basic Sentence Structure — shows where the subject, verb, object, time, and place normally go before negation is added.