B1 Complement System 16 min read Easy

Cannot Do It: Chinese Negative Potential Complements (V + 不 + Result)

Insert 'bu' between a verb and its result to say you try, but simply cannot achieve it.

Grammar Rule in 30 Seconds

Use 'V + 不 + Result' to express that an action cannot be completed due to physical or logical impossibility.

  • Use '不' between the verb and the result complement: {看不见|kàn bù jiàn} (cannot see).
  • This structure is for inability, not just refusal: {听不懂|tīng bù dǒng} (cannot understand by listening).
  • Do not use '了' or '过' with this structure: {买不到|mǎi bù dào} (cannot buy).
Subject + Verb + 不 + Result Complement

Overview

As a learner navigating the Chinese language, you'll quickly discover that directly translating English grammatical structures often leads to unnatural or incorrect expressions. One such area where this becomes particularly evident is in expressing inability or impossibility. You might instinctively want to say something like 我不能听懂 (Wǒ bù néng tīng dǒng) to mean "I can't understand [what I hear]", but while 不能 (bù néng) does mean "cannot", its usage is significantly different from the structure we'll explore here.

This chapter introduces you to a fundamental and frequently used grammatical pattern: the Negative Potential Complement, specifically the V + 不 + Result structure.

This pattern is crucial because it allows you to communicate that an action cannot achieve its intended or desired result, not due to a lack of permission, but due to objective limitations or insufficient conditions. Imagine you're trying to listen to a Chinese podcast, but the audio quality is poor, or the speakers are too fast. You're not forbidden from understanding; you simply cannot physically or mentally achieve the understanding because of external factors or your current capacity.

This is precisely when you would use the V + 不 + Result structure. It's an indispensable tool for clearly and idiomatically expressing various forms of unreachability, from physical constraints like not being able to finish a meal to cognitive barriers like not being able to comprehend complex information. Mastering this complement system at the A1 level will immediately elevate your communicative precision in Chinese.

How This Grammar Works

The Chinese language frequently uses complements to provide additional information about a verb. Among these, resultative complements are particularly common, indicating the outcome or result of an action. For instance, in 听懂 (tīng dǒng), (tīng) means "to listen", and (dǒng) means "to understand".
Together, they form a unit meaning "to understand through listening" or "to listen and comprehend".
The Negative Potential Complement takes this concept a step further by expressing that the potential for a particular outcome does not exist. It signifies that despite an attempt or desire to perform an action, the desired result cannot be achieved. This inability stems from various factors: inherent physical limitations, external circumstances, lack of necessary conditions, or even cognitive barriers.
Crucially, the V + 不 + Result structure focuses on the objective impossibility of achieving a result. It is not about permission or prohibition, which is the primary domain of 不能 (bù néng). Consider these distinctions:
  • 我不能去 (Wǒ bù néng qù): "I cannot go" (e.g., I'm not allowed, I have a prior engagement, it's against the rules). The inability is often external or a matter of choice/circumstance.
  • 我走不去 (Wǒ zǒu bu qù): "I cannot go [there by walking]" (e.g., the destination is too far, my legs are tired, the path is blocked). The inability is about the physical execution of the action and its resulting state.
The (bù) particle, when inserted between the verb and its resultative complement, acts as the negative marker for potential. It transforms a statement of potential (V + 得 + R, e.g., 听得懂 tīng de dǒng - "can understand by listening") into a statement of inability to achieve that potential. The here is pronounced with a neutral tone, often very lightly, merging almost seamlessly with the surrounding sounds.
This structure reflects a fundamental aspect of Chinese verb-complement constructions, which often prioritize the outcome or state resulting from an action. By negating this outcome's possibility, you're not merely saying "I don't do X"; you're articulating "I do X, but the result of X cannot be achieved." This distinction is vital for sounding natural and precise in Chinese.

Formation Pattern

1
The formation of the Negative Potential Complement is straightforward and follows a strict pattern. You combine a Verb of Action (V), the negative particle (bù), and a Resultative Complement (R). The (bù) is always inserted directly between the main verb and its complement, signaling that the result cannot be achieved. The resultative complement itself can be another verb or an adjective, indicating the state or outcome.
2
The Basic Formula:
3
Verb (V) + 不 (bù) + Resultative Complement (R)
4
Remember that the (bù) in this construction is almost always pronounced in a neutral tone (bu), losing its original fourth tone. This phonetic change is a subtle but important marker of its function within the potential complement system. It indicates a grammatical bond rather than a simple negation.
5
Here's a breakdown with common examples:
6
| Verb (V) | (bù) | Resultative Complement (R) | Combined Form | Pinyin | Meaning |
7
| :------- | :-------- | :------------------------- | :------------------ | :-------------- | :----------------------------- |
8
| (tīng) | (bu) | (dǒng) | 听不懂 | tīng bu dǒng | can't understand (by listening) |
9
| (kàn) | (bu) | (jiàn) | 看不见 | kàn bu jiàn | can't see |
10
| (chī) | (bu) | (wán) | 吃不完 | chī bu wán | can't finish eating |
11
| (hē) | (bu) | (guāng) | 喝不光 | hē bu guāng | can't finish drinking (all up) |
12
| (mǎi) | (bu) | (qǐ) | 买不起 | mǎi bu qǐ | can't afford to buy |
13
| (zǒu) | (bu) | (dòng) | 走不动 | zǒu bu dòng | can't walk anymore/move on foot |
14
| (ná) | (bu) | (dòng) | 拿不动 | ná bu dòng | can't lift/carry (too heavy) |
15
| (zhù) | (bu) | (guàn) | 住不惯 | zhù bu guàn | can't get used to living (somewhere) |
16
Let's look at some full sentences:
17
这个字太小了,我看不清楚 (Zhège zì tài xiǎo le, wǒ kàn bu qīngchu).
18
This character is too small, I can't see it clearly.
19
Here, (kàn) is the verb, (bu) is the negative potential marker, and 清楚 (qīngchu - clear) is the adjective serving as the resultative complement.
20
这道菜太辣了,我吃不下去 (Zhè dào cài tài là le, wǒ chī bu xiàqù).
21
This dish is too spicy, I can't eat it (go down).
22
(chī) is the verb, (bu) is the marker, and 下去 (xiàqù - go down) indicates the physical act of consumption becoming impossible.
23
你说话声音太小了,我听不见 (Nǐ shuōhuà shēngyīn tài xiǎo le, wǒ tīng bu jiàn).
24
Your speaking voice is too quiet, I can't hear it.
25
(tīng) is the verb, (bu) is the marker, and (jiàn - to see/perceive) is the resultative complement indicating the perception of sound.
26
Notice how the directly negates the result (清楚, 下去, ) of the action, not the action itself. You are attempting to (see), (eat), (listen), but the desired outcome is unattainable.

When To Use It

This V + 不 + Result structure is deployed whenever you want to express an inability to achieve a specific outcome, regardless of effort. The core idea is that some objective impediment or inherent lack prevents the completion or success of the action. It's a statement of factual impossibility, often rooted in physical, sensory, logistical, or financial constraints.
Here are the primary scenarios where you will use this powerful grammatical pattern:
1. Physical Incapacity or Limitation:
When your body simply cannot perform the action to its desired end. This is a very common application, especially with verbs related to movement, carrying, or consumption.
  • Too heavy/tired: 这个箱子太重了,我拿不动 (Zhège xiāngzi tài zhòng le, wǒ ná bu dòng.)
  • This box is too heavy, I can't lift/carry it.
  • (You try to (lift) but the (movement) result cannot be achieved.)
  • Too far/exhausted: 我今天走了太多路,真的走不动了。 (Wǒ jīntiān zǒu le tài duō lù, zhēnde zǒu bu dòng le.)
  • I walked too much today, I really can't walk anymore.
  • (You try to (walk) but (moving forward) is impossible due to fatigue.)
  • Too full/sick to eat: 今天的晚饭太多了,我吃不完 (Jīntiān de wǎnfàn tài duō le, wǒ chī bu wán.)
  • Tonight's dinner is too much, I can't finish eating it.
  • (You try to (eat) but the (completion) result is beyond your capacity.)
2. Sensory Perception Obstacles:
When external conditions hinder your ability to perceive something (hear, see, smell, taste).
  • Poor visibility: 外面太黑了,我看不见路。 (Wàimiàn tài hēi le, wǒ kàn bu jiàn lù.)
  • It's too dark outside, I can't see the road.
  • (You attempt to (see) but (perceive) the road is impossible due to darkness.)
  • Low volume: 音乐声音太小,我听不清楚 (Yīnyuè shēngyīn tài xiǎo, wǒ tīng bu qīngchu.)
  • The music volume is too low, I can't hear it clearly.
  • (You try to (listen) but 清楚 (clearly) is not achievable.)
3. Cognitive or Comprehension Barriers:
When information is too complex, fast, or unfamiliar to be understood or processed.
  • Language barrier/speed: 这个电影没有字幕,我听不懂 (Zhège diànyǐng méiyǒu zìmù, wǒ tīng bu dǒng.)
  • This movie has no subtitles, I can't understand it (by listening).
  • (You try to (listen) but (understand) is impossible.)
  • Difficulty understanding text: 这份文件太专业了,我看不懂 (Zhè fèn wénjiàn tài zhuānyè le, wǒ kàn bu dǒng.)
  • This document is too technical, I can't understand it (by reading).
  • (You try to (read) but (understand) is not achieved.)
4. Financial or Logistical Constraints:
When resources (money, time, space) are insufficient to achieve a goal.
  • Lack of funds: 这件衣服太贵了,我买不起 (Zhè jiàn yīfu tài guì le, wǒ mǎi bu qǐ.)
  • This piece of clothing is too expensive, I can't afford to buy it.
  • (You try to (buy) but (afford/get up) is impossible due to cost.)
  • No room: 我家太小了,住不下这么多人。 (Wǒ jiā tài xiǎo le, zhù bu xià zhème duō rén.)
  • My home is too small, cannot accommodate so many people (live down).
  • (You try to (live) but (down/accommodate) is impossible due to space.)
5. Unsuitability or Inadaptability:
When something doesn't fit or you can't get accustomed to a situation.
  • Doesn't fit: 这条裤子太小了,我穿不上 (Zhè tiáo kùzi tài xiǎo le, wǒ chuān bu shàng.)
  • These pants are too small, I can't put them on.
  • (You try to 穿 (wear) but (on/fitting) is not achieved.)
  • Can't get used to: 我来中国半年了,还是吃不惯辣的。 (Wǒ lái Zhōngguó bànnián le, háishì chī bu guàn là de.)
  • I've been in China for half a year, but I still can't get used to eating spicy food.
  • (You try to (eat) but (be accustomed to) is not achieved.)
In all these cases, the V + 不 + Result structure communicates an objective inability to realize the outcome of an action, emphasizing the circumstances or inherent limitations rather than a decision or prohibition.

Common Mistakes

For A1 learners, the most frequent and significant error when dealing with inability in Chinese is the improper use of 不能 (bù néng) instead of the V + 不 + Result potential complement. While both convey "cannot," their semantic domains are distinct, and interchangeability often leads to grammatical awkwardness or miscommunication.
Mistake 1: Confusing V + 不 + Result with 不能 (bù néng)
  • 不能 (bù néng) primarily expresses:
  • Prohibition/Lack of Permission: Something is not allowed. "You cannot do X."
  • Subjective Inability/Choice: The speaker chooses not to, or feels unable for personal reasons (e.g., scheduling conflicts, personal conviction). "I am unable to do X" or "I shouldn't do X."
  • External Circumstance (broad): General impossibility that isn't focused on a specific action's result.
  • V + 不 + Result exclusively expresses:
  • Objective Inability to Achieve a Result: Despite effort or desire, the action's intended outcome is objectively impossible due to physical, sensory, cognitive, or external limiting conditions. It's about the actual feasibility of the result.
Example Comparisons:
| Situation | Incorrect Usage (Often 不能) | Pinyin | Correct Usage (V + 不 + Result) | Pinyin | Explanation |
| :------------------------ | :------------------------------------- | :------------------------------ | :-------------------------------- | :------------------------------ | :---------------------------------------------------------------------------------------------------------- |
| Understanding a film | 我不能看懂这个电影。 | Wǒ bù néng kàn dǒng zhège diànyǐng. | 我看不懂这个电影。 | Wǒ kàn bu dǒng zhège diànyǐng. | 不能看懂 implies you're forbidden to understand. 看不懂 means you can't comprehend it due to complexity. |
| Eating spicy food | 我不能吃辣。 | Wǒ bù néng chī là. | 我吃不惯辣的。 | Wǒ chī bu guàn là de. | 不能吃 might mean you're allergic or it's against doctor's orders. 吃不惯 means you haven't adapted to the taste. |
| Entering a building | 我不能进去。 | Wǒ bù néng jìnqù. | 我进不去。 | Wǒ jìn bu qù. | 不能进去 suggests you're not allowed. 进不去 implies a physical barrier (e.g., locked door, too narrow). |
| Hearing something | 我不能听到。 | Wǒ bù néng tīngdào. | 我听不见。 | Wǒ tīng bu jiàn. | 不能听到 is grammatically unusual in this context. 听不见 means external noise prevents hearing. |
Using 不能 where V + 不 + Result is appropriate often sounds like a child saying "I'm not allowed" rather than an adult saying "I am physically unable." Always consider the source of the inability: is it permission/choice, or objective feasibility?
Mistake 2: Using (méi) instead of (bù)
  • You might recall that (méi) is used to negate actions that have occurred in the past or to express "haven't/didn't." However, for potential complements, (bù) is the exclusive negative particle. Never use (méi) to form a potential complement.
  • Incorrect: 我没听懂 (Wǒ méi tīng dǒng) - This implies "I didn't understand (in the past)" not "I can't understand."
  • Correct: 我听不懂 (Wǒ tīng bu dǒng) - I can't understand (potential inability).
Mistake 3: Omitting the Resultative Complement
  • The structure is V + 不 + R. You cannot simply say V + 不 to express potential inability. The result R is integral to specifying what outcome cannot be achieved.
  • Incorrect: 我看不。 (Wǒ kàn bu.) - Grammatically incomplete and meaningless.
  • Correct: 我看不懂。 (Wǒ kàn bu dǒng.) - I can't understand (by reading).
  • Correct: 我看不见。 (Wǒ kàn bu jiàn.) - I can't see.
By carefully distinguishing between the nuances of 不能, , and understanding the strict structure of V + 不 + Result, you will avoid these common pitfalls and produce more natural and accurate Chinese.

Real Conversations

Understanding how V + 不 + Result complements are used in authentic, everyday communication is key to internalizing this grammar. These examples reflect situations you'll encounter in daily life, ranging from casual chats to practical dilemmas.

S

Scenario 1

Describing a difficult task
A

A

这个太难了,我学不会。 (Zhège tài nán le, wǒ xué bu huì.)

- This is too hard, I can't learn it.

B

B

别担心,慢慢来,你可以的。 (Bié dānxīn, mànmàn lái, nǐ kěyǐ de.)

- Don't worry, take your time, you can do it.

S

Scenario 2

Making plans based on availability
A

A

我们明天去爬山吧? (Wǒmen míngtiān qù páshān ba?)

- Shall we go hiking tomorrow?

B

B

不行啊,我走不动了,上次爬山腿还疼呢。 (Bùxíng a, wǒ zǒu bu dòng le, shàngcì páshān tuǐ hái téng ne.)

- Can't do it. I can't walk anymore/move on foot; my legs still hurt from the last hike.

S

Scenario 3

Dealing with food preferences or quantity
A

A

这碗面你能吃完吗?好多啊。 (Zhè wǎn miàn nǐ néng chī wán ma? Hǎo duō a.)

- Can you finish this bowl of noodles? It's so much.

B

B

我努力试试,但是可能吃不完。 (Wǒ nǔlì shìshì, dànshì kěnéng chī bu wán.)

- I'll try hard, but I probably can't finish eating it.

S

Scenario 4

Expressing discomfort or inability to adapt
A

A

你习惯北方菜吗? (Nǐ xíguàn běifāng cài ma?)

- Are you used to Northern cuisine?

B

B

不太习惯,有点儿吃不惯面食。 (Bú tài xíguàn, yǒudiǎnr chī bu guàn miànshí.)

- Not really, I'm a bit not used to eating wheat-based foods.

S

Scenario 5

During a phone call or noisy environment
A

A

喂?你听到我说话吗? (Wèi? Nǐ tīngdào wǒ shuōhuà ma?)

- Hello? Can you hear me talking?

B

B

有点儿吵,我听不清楚,你再说一遍好吗? (Yǒudiǎnr chǎo, wǒ tīng bu qīngchu, nǐ zài shuō yī biàn hǎo ma?)

- It's a bit noisy, I can't hear clearly. Could you say it again?

These dialogues demonstrate how naturally V + 不 + Result flows in everyday Chinese, reflecting real-world challenges and limitations without resorting to stiff or overly formal expressions. Pay attention to the context – the reason for the inability is usually evident from the surrounding conversation.

Quick FAQ

Here are answers to some common questions you might have about this grammar point, designed to reinforce your understanding and address potential ambiguities.
  • Q: Does the tone of (bù) always change in this construction?
  • A: Yes. When (bù) is inserted between a verb and its resultative complement (V + + R), it almost invariably takes a neutral tone (bu). This is a grammaticalized reduction, signaling that is functioning as a potential marker rather than a standalone negative particle. While in other contexts usually carries a fourth tone, or changes to a second tone before another fourth tone, here it is light and quick.
  • Q: Can I use (méi) instead of (bù) for potential complements?
  • A: No, absolutely not. (méi) is used to negate actions that have not happened or did not happen in the past (e.g., 我没吃饭 - Wǒ méi chī fàn - "I didn't eat/haven't eaten"). (bù) is the dedicated negative particle for potential complements (V + + R) to express present or general inability to achieve a result.
  • Q: How do I form a question with this structure?
  • A: You can form a question in a few ways:
  1. 1Using (ma): Simply add at the end of the statement.
  • 你看得懂这个字吗? (Nǐ kàn de dǒng zhège zì ma?) - Can you understand this character (by reading)?
  1. 1Using the V + 得 + R + V + 不 + R (Positive-Negative) form: This is a common and very natural way to ask.
  • 你看得懂看不懂这个字? (Nǐ kàn de dǒng kàn bu dǒng zhège zì?) - Can you or can't you understand this character?
  • Q: Are there positive versions of these potential complements?
  • A: Yes! The positive counterpart to V + 不 + R is V + 得 + R. Here, (de) is a neutral-toned structural particle that indicates the possibility or ability to achieve the result. For example:
  • 听得懂 (tīng de dǒng) - can understand (by listening)
  • 看得见 (kàn de jiàn) - can see
  • 吃得完 (chī de wán) - can finish eating
  • The (de) also takes a neutral tone, much like (bu), signifying its grammatical function within the potential complement system. This positive form will be explored in detail in the next chapter.
  • Q: Can objects be placed within the V + 不 + R structure?
  • A: No, the structure V + 不 + R must remain a tight unit. If there is an object, it typically follows the entire potential complement, or sometimes precedes the verb for emphasis.
  • Correct: 我看不懂那个电影。 (Wǒ kàn bu dǒng nàge diànyǐng.) - I can't understand that movie (by watching).
  • Incorrect: 我看不那个电影懂。 (Wǒ kàn bu nàge diànyǐng dǒng.)
  • Correct (object before verb): 那个电影我看不懂。 (Nàge diànyǐng wǒ kàn bu dǒng.) - That movie, I can't understand it.

Potential Complement Structure

Type Structure Example Meaning
Affirmative
V + 得 + Result
买得起
Can afford
Negative
V + 不 + Result
买不起
Cannot afford
Question
V + 不 + Result + 吗?
买不起吗?
Can't you afford it?
A-not-A
V + 得 + Result + V + 不 + Result
买得起买不起
Can you afford it or not?
Result 1
Verb + 到
找不到
Cannot find
Result 2
Verb + 见
看不见
Cannot see
Result 3
Verb + 完
吃不完
Cannot finish
Result 4
Verb + 懂
听不懂
Cannot understand

Meanings

This structure indicates that a specific result cannot be achieved through an action, often due to external circumstances or inherent limitations.

1

Physical Impossibility

The action cannot reach the intended result.

“{拿|ná}{不|bù}{动|dòng} (cannot move/lift)”

“{吃|chī}{不|bù}{完|wán} (cannot finish eating)”

2

Logical/Cognitive Inability

The action fails to produce the desired mental or sensory result.

“{听|tīng}{不|bù}{清|qīng} (cannot hear clearly)”

“{记|jì}{不|bù}{住|zhù} (cannot remember)”

3

Availability/Access

The object cannot be obtained or reached.

“{买|mǎi}{不|bù}{到|dào} (cannot buy/find for purchase)”

“{进|jìn}{不|bù}{去|qù} (cannot enter)”

Reference Table

Reference table for Cannot Do It: Chinese Negative Potential Complements (V + 不 + Result)
Form Structure Example
Negative
V + 不 + Result
吃不完
Affirmative
V + 得 + Result
吃得完
Question
V + 不 + Result + 吗?
吃不完吗?
A-not-A
V + 得 + Result + V + 不 + Result
吃得完吃不完?
Object Placement
V + 不 + Result + Object
买不到票
Resultative
V + 不 + Result
看不见

Formality Spectrum

Formal
我无法完成。

我无法完成。 (Restaurant)

Neutral
我吃不完。

我吃不完。 (Restaurant)

Informal
吃不完啊。

吃不完啊。 (Restaurant)

Slang
吃不动了。

吃不动了。 (Restaurant)

Potential Complement Map

V + 不 + Result

Physical

  • 拿不动 Cannot lift

Cognitive

  • 听不懂 Cannot understand

Access

  • 买不到 Cannot buy

Examples by Level

1

{吃|chī}{不|bù}{完|wán}

Cannot finish eating

2

{看|kàn}{不|bù}{见|jiàn}

Cannot see

3

{听|tīng}{不|bù}{懂|dǒng}

Cannot understand

4

{走|zǒu}{不|bù}{动|dòng}

Cannot walk

1

{买|mǎi}{不|bù}{到|dào}票

Cannot buy tickets

2

{找|zhǎo}{不|bù}{到|dào}人

Cannot find the person

3

{打|dǎ}{不|bù}{开|kāi}门

Cannot open the door

4

{记|jì}{不|bù}{住|zhù}

Cannot remember

1

{这|zhè}个{字|zì}{写|xiě}{不|bù}{出|chū}{来|lái}

I cannot write this character

2

{他|tā}{跑|pǎo}{不|bù}{快|kuài}

He cannot run fast

3

{我|wǒ}{搬|bān}{不|bù}{动|dòng}这{个|gè}箱子

I cannot move this box

4

{这|zhè}个{问|wèn}{题|tí}{解|jiě}{决|jué}{不|bù}{了|liǎo}

This problem cannot be solved

1

{这|zhè}种{情|qíng}{况|kuàng}{预|yù}{料|liào}{不|bù}{到|dào}

This situation could not have been predicted

2

{他|tā}{的|de}{话|huà}{我|wǒ}{听|tīng}{不|bù}{下|xià}{去|qù}

I cannot bear to listen to his words

3

{这|zhè}个{计|jì}{划|huà}{实|shí}{行|xíng}{不|bù}{下|xià}{去|qù}

This plan cannot be carried out

4

{我|wǒ}{实|shí}{在|zài}{忍|rěn}{受|shòu}{不|bù}{了|liǎo}

I really cannot endure it

1

{这|zhè}种{文|wén}{化|huà}{差|chā}{异|yì}{忽|hū}{略|lüè}{不|bù}{得|dé}

This cultural difference cannot be ignored

2

{他|tā}{的|de}{成|chéng}{就|jiù}{超|chāo}{越|yuè}{不|bù}{了|liǎo}

His achievements cannot be surpassed

3

{这|zhè}个{决|jué}{定|dìng}{改|gǎi}{变|biàn}{不|bù}{了|liǎo}

This decision cannot be changed

4

{他|tā}{的|de}{意|yì}{图|tú}{猜|cāi}{不|bù}{透|tòu}

His intentions cannot be fathomed

1

{此|cǐ}{事|shì}{耽|dān}{误|wù}{不|bù}{得|dé}

This matter cannot be delayed

2

{这|zhè}种{古|gǔ}{文|wén}{读|dú}{不|bù}{通|tōng}

This classical text cannot be read/understood

3

{他|tā}{的|de}{才|cái}{华|huá}{掩|yǎn}{盖|gài}{不|bù}{住|zhù}

His talent cannot be hidden

4

{这|zhè}{种|zhǒng}{恶|è}{习|xí}{改|gǎi}{不|bù}{掉|diào}

This bad habit cannot be changed

Easily Confused

Cannot Do It: Chinese Negative Potential Complements (V + 不 + Result) vs 不能 (bùnéng) vs. V+不+Result

Learners often use '不能' for everything.

Cannot Do It: Chinese Negative Potential Complements (V + 不 + Result) vs 没 (méi) vs. 不 (bù)

Learners use '没' to negate potential.

Cannot Do It: Chinese Negative Potential Complements (V + 不 + Result) vs V+不+Result+了

Learners add '了' to indicate past tense.

Common Mistakes

买不到了

买不到

Potential complements do not take '了'.

不能买到

买不到

Use '不能' for permission, not potential.

买不

买不到

The result complement is required.

不买到

买不到

The negative '不' must be between the verb and the result.

听不明白

听不懂

While '听不明白' is understood, '听不懂' is the standard idiomatic potential complement.

看没见

看不见

Use '不', not '没', for potential.

吃不完的

吃不完

No need for '的' here.

我不能搬动它

我搬不动它

Use potential complement for physical inability.

找不到了

找不到

Potential complements are timeless.

看不见他

看不见他

Actually correct, but often confused with '没看见' (didn't see).

解决不了了

解决不了

Redundant '了'.

猜不透的

猜不透

Adjective usage mistake.

改不掉的习惯

改不掉的习惯

This is actually correct as a modifier, but learners often use it as a predicate.

Sentence Patterns

我___不___。

你___得___吗?

这事儿我___不___。

他___不___,因为___。

Real World Usage

Food Delivery Apps very common

配送不到 (Cannot deliver to this location).

Texting common

我找不着你 (I can't find you).

Job Interviews occasional

我处理不了这个问题 (I cannot handle this problem).

Travel very common

买不到票 (Cannot buy tickets).

Social Media common

看不下去 (Cannot bear to watch).

Classroom common

听不懂 (Cannot understand).

💡

Focus on the Result

Always ask yourself: what is the result I'm trying to achieve? That's your complement.
⚠️

No '了' Allowed

Never add '了' to a potential complement. It's a common trap!
🎯

Use '得' for Affirmative

If you can do it, use '得'. If you can't, use '不'.
💬

Polite Refusal

Use this structure to politely decline tasks by saying they are 'impossible' rather than just saying 'no'.

Smart Tips

Think 'Verb + 不 + Result'.

我不能吃完。 我吃不完。

Stop! Potential is timeless.

我买不到了。 我买不到。

Ask: Is it permission or capacity?

我不能看见。 我看不见。

Use common pairs like '听不懂' and '买不到'.

我听不明白。 我听不懂。

Pronunciation

kàn bu jiàn

Stress

The '不' is usually unstressed or neutral tone in rapid speech.

Falling

买不到! ↘

Expresses frustration or finality.

Memorize It

Mnemonic

Think of '不' as a wall. When you put it between the verb and the result, it blocks the action from reaching the goal.

Visual Association

Imagine trying to reach for a cookie on a high shelf. Your hand is the verb, the shelf is the result, and a big '不' sign is blocking your arm.

Rhyme

Verb plus '不' plus result, can't finish it, that's the result.

Story

Xiao Wang tried to buy a concert ticket. He went to the website, but it was sold out. He said, '买不到!' (I can't buy it). He tried to read the screen, but the text was too small. He said, '看不清!' (I can't see clearly). Finally, he tried to remember the date, but he couldn't. He said, '记不住!' (I can't remember).

Word Web

看不见听不懂买不到吃不完记不住走不动

Challenge

For the next 5 minutes, look around your room and say three things you 'cannot do' using this structure (e.g., 'I cannot reach that light').

Cultural Notes

People often use '找不着' (zhǎo bù zháo) instead of '找不到' (zhǎo bù dào).

The usage is very similar, but some dialects prefer specific result complements.

Using potential complements is a polite way to say 'no' without being blunt.

The potential complement system evolved from resultative verb compounds in Middle Chinese.

Conversation Starters

你今天吃得完这些菜吗?

你找得到去火车站的路吗?

你觉得这个任务完成得了吗?

你有什么改不掉的习惯吗?

Journal Prompts

Describe a time you couldn't finish a meal.
Write about a place you couldn't find.
Explain a task you couldn't complete at work/school.
Reflect on a habit you cannot change.

Common Mistakes

Incorrect

Correct


Incorrect

Correct


Incorrect

Correct


Incorrect

Correct

Test Yourself

Fill in the blank.

我吃___完。

✓ Correct! ✗ Not quite. Correct answer: a
The structure is V + 不 + Result.
Choose the correct sentence. Multiple Choice

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: a
Standard structure.
Correct the sentence. Error Correction

Find and fix the mistake:

我找不到了。

✓ Correct! ✗ Not quite. Correct answer: a
Remove '了'.
Reorder the words. Sentence Reorder

Arrange the words in the correct order:

All words placed

Click words above to build the sentence

✓ Correct! ✗ Not quite. Correct answer: a
Subject + V + 不 + R.
Translate to Chinese. Translation

I cannot understand.

Answer starts with: a...

✓ Correct! ✗ Not quite. Correct answer: a
Standard potential.
Match the meaning. Match Pairs

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer: a
Meaning match.
Complete the dialogue. Dialogue Completion

A: 你能看完这本书吗? B: ___.

✓ Correct! ✗ Not quite. Correct answer: a
Potential response.
Build a sentence. Sentence Building

Use: 走 / 不 / 动

✓ Correct! ✗ Not quite. Correct answer: a
Correct structure.

Score: /8

Practice Exercises

8 exercises
Fill in the blank.

我吃___完。

✓ Correct! ✗ Not quite. Correct answer: a
The structure is V + 不 + Result.
Choose the correct sentence. Multiple Choice

Which is correct?

✓ Correct! ✗ Not quite. Correct answer: a
Standard structure.
Correct the sentence. Error Correction

Find and fix the mistake:

我找不到了。

✓ Correct! ✗ Not quite. Correct answer: a
Remove '了'.
Reorder the words. Sentence Reorder

不 / 看 / 见 / 我

✓ Correct! ✗ Not quite. Correct answer: a
Subject + V + 不 + R.
Translate to Chinese. Translation

I cannot understand.

✓ Correct! ✗ Not quite. Correct answer: a
Standard potential.
Match the meaning. Match Pairs

Match: 拿不动

✓ Correct! ✗ Not quite. Correct answer: a
Meaning match.
Complete the dialogue. Dialogue Completion

A: 你能看完这本书吗? B: ___.

✓ Correct! ✗ Not quite. Correct answer: a
Potential response.
Build a sentence. Sentence Building

Use: 走 / 不 / 动

✓ Correct! ✗ Not quite. Correct answer: a
Correct structure.

Score: /8

Practice Bank

12 exercises
You are too full. How do you say you can't eat another bite? Fill in the Blank

我吃 ___ 下了。

✓ Correct! ✗ Not quite. Correct answer:
How do you say 'I cannot afford it'? Multiple Choice

Choose the right expression:

✓ Correct! ✗ Not quite. Correct answer: 买不起
Fix the sentence: 'I can't see the whiteboard.' Error Correction

我看没见白板。

✓ Correct! ✗ Not quite. Correct answer: 我看不见白板。
Select the correct Chinese translation for: 'The music is too quiet, I can't hear it.' Translation

The music is too quiet, I can't hear it.

✓ Correct! ✗ Not quite. Correct answer: 音乐太小了,我听不见。
Rearrange the words to say: 'I can't finish doing today's homework.' Sentence Reorder

Order the words correctly:

✓ Correct! ✗ Not quite. Correct answer: 今天的作业 我 做不完
Select the phrase that matches 'Can't understand reading'. Match Pairs

Match the meaning:

✓ Correct! ✗ Not quite. Correct answer: 看不懂
Translate: 'He speaks too fast, I can't understand.' Translation

He speaks too fast, I can't understand.

✓ Correct! ✗ Not quite. Correct answer: 他说得太快,我听不懂。
Complete the phrase for 'can't find'. Fill in the Blank

找 ___ 到

✓ Correct! ✗ Not quite. Correct answer:
If a movie is entirely in French without subtitles, which do you say? Multiple Choice

What is your situation?

✓ Correct! ✗ Not quite. Correct answer: 我看不懂
Fix the grammar for 'cannot enter'. Error Correction

门坏了,我们进没去。

✓ Correct! ✗ Not quite. Correct answer: 门坏了,我们进不去。
Put these in order to say 'I can't afford this phone'. Sentence Reorder

Order the words correctly:

✓ Correct! ✗ Not quite. Correct answer: 我 买不起 这个 手机
Select the phrase that matches 'Can't physically see'. Match Pairs

Match the meaning:

✓ Correct! ✗ Not quite. Correct answer: 看不见

Score: /12

FAQ (8)

No, '没' is for past tense negation, while '不' is for potential.

Potential complements are timeless; they describe capacity, not completed actions.

No. '听不懂' means you cannot understand (capacity), '没听懂' means you didn't understand (past event).

Use '不能'.

Some verbs are more common with certain complements, like '看' with '见' or '懂'.

Add '吗' at the end or use the A-not-A form.

Yes, but be careful with register.

They mean the same, but '找不着' is more common in Northern China.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

In Other Languages

Spanish moderate

No poder + infinitive

Chinese is more specific about the 'result' of the action.

French moderate

Ne pas pouvoir + infinitive

Chinese focuses on the outcome, French on the ability.

German moderate

Nicht können

Chinese structure requires a result complement.

Japanese high

Potential form (e.g., taberarenai)

Chinese is analytic; Japanese is synthetic.

Arabic low

La astati'u an...

Chinese uses a fixed V-bu-R pattern.

Chinese n/a

V-bu-R

N/A

Learning Path

Prerequisites

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