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March 24, 2026
必bì(bi4)
The character 必 (bì) conveys a strong sense of necessity or certainty. It is commonly used to express that something must happen or is guaranteed to occur, often found in contexts involving obligations, predictions, or assurances.
Strokes5Radical心Frequency#3220DifficultyHard
Cultural Note
In Chinese culture, the concept of obligation is deeply rooted in Confucian values, where fulfilling one's duties is seen as essential. The use of 必 highlights the importance of commitment and responsibility in both personal and professional contexts.
Memory Tip
Imagine a 'bee' (sounds like 'bì') that must pollinate flowers to survive. Just like the bee’s necessity to pollinate, 必 indicates something that must happen. The character itself has a simple structure, emphasizing its straightforward meaning of 'must'.
Meanings of 必
bì(bi4)
1certainly
2must
Exercise 1 of 2
Listen & Choose the Meaning
Choose the correct answer:
About 必
必Simplified
5Strokes
心Radical
副词fùcíadverb (adv.)Part of Speech
#3220Frequency Rank
HSK 3.0L5IntermediateTOCFLL5HSKKL3CEFRB2
Podcast: 必
Podcast: 必
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AI Study Notes for 必
Quick Contrast
必 (bì) vs 一定 (yīdìng) — choose 必 (bì) for a stronger sense of unavoidable necessity.
Memory Mnemonic
Imagine a 'bee' (sounds like 'bì') that must pollinate flowers to survive. Just like the bee’s necessity to pollinate, 必 indicates something that must happen. The character itself has a simple structure, emphasizing its straightforward meaning of 'must'.
Usage Notes
Learners often confuse 必 with other characters that express obligation, like 应 (yīng). It is generally used in both formal and informal contexts, but be cautious of its strong connotation; it implies a stronger necessity than simply 'should'. Common collocations include 必须 (bìxū, must) and 必然 (bìrán, inevitably).
HSK Study Tips
Although 必 is not assigned a specific HSK level, it is essential for beginners to understand its meaning as it is frequently used in daily conversations. Students should practice using 必 in simple sentences to reinforce its necessity aspect.
Cultural Note
In Chinese culture, the concept of obligation is deeply rooted in Confucian values, where fulfilling one's duties is seen as essential. The use of 必 highlights the importance of commitment and responsibility in both personal and professional contexts.
Common Mistakes
Learners sometimes confuse 必 (bì) with 也 (yě), mistakenly using it in contexts where 'also' is intended. For example, saying '我必去' (Wǒ bì qù) instead of '我也去' (Wǒ yě qù), which means 'I also go'.
AI-enhanced 2026-03-24
Pronunciation of 必
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Grammar Patterns of 必
必 functions as an adverb — it modifies a verb, adjective, or another adverb. In Chinese, adverbs sit BEFORE the verb they modify (我也去, 他常常迟到), never after it. It carries 5 related meanings, each with its own usage notes below. The example sentences below show it in action, with practice buttons (Listen, Practice Writing, Practice Speaking) on every line.
You have to take capital appreciation of the property into account.
7
妈妈,我们谈话时你不必陪着.
mā mā, , wǒ mén tán huà shí nǐ bù bì péi.
Mommy, you don't need to stay while we talk.
8
你的决定必须转化为具体明确的行动。
nǐ de jué dìng bì xū zhuǎn huà wéi jù tǐ míng què de háng dòng。
Your decision must be translated into specific, concrete actions.
9
你若留在这里，必死无疑。
nǐ ruò liú zài zhè lǐ， ， bì sǐ wú。
You stay here, you die. No two ways about it.
10
你必须搞清状况以及自己的底线。
nǐ bì xū gǎo qīng zhuàng kuàng yǐ jí zì jǐ de dǐ xiàn。
You have to know what's what and when to draw the line.
Cultural Notes for 必
💡Did you know?
'必' is often used in expressions like '必须' (must) and '一定' (certainly), emphasizing the importance of necessity in Chinese culture, reflecting a strong sense of commitment.
🏮Cultural insight
In Chinese culture, the concept of obligation is deeply rooted in Confucian values, where fulfilling one's duties is seen as essential. The use of 必 highlights the importance of commitment and responsibility in both personal and professional contexts.
📜Proverb
A well-known Chinese proverb is '事在人为, 必能成功' which translates to 'Success depends on human effort; it must succeed.' This highlights the belief in hard work and determination.
🌏Cross-cultural Insight
In many cultures, the concept of necessity is linked to responsibility. In Chinese culture, '必' reflects the importance of fulfilling obligations, which is often emphasized in family and social relationships.
Word Family of 必
Compounds29
秘bi4variant of 秘[mì]
瑟se4a large string instrument; to tremble, to vibrate
泌mi4to secrete
谧mi4calm, quiet, still; cautious
毖bi4caution; to guard against, to take care
铋bi4bismuth
祕mi4secret, mysterious, abstruse
咇
宓Mi4quiet, silent, still; in good health
怭
柲
珌
苾
邲
閟
飶
馝
駜
佖
妼
榓
淧
虙
袐
覕
謐mi4calm, quiet, still; cautious
鉍
鮅
鴓
Words Containing This Character20
必须bìxūmust必須
必要bìyàonecessary
不必búbìneed not
必bìmust
必然bìráninevitable
何必hébìwhy should
未必wèibìmaybe not
必将bìjiānginevitably必將
必需bìxūto need
必定bìdìngto be bound to
必备essential必備
势必shìbìto be bound to勢必
务必wùbìmust務必
想必presumably
不必要needless
必不可少bìbùkěshǎoabsolutely necessary
必要性necessity
必需品necessity
势在必行imperative勢在必行
必经unavoidable必經
Exercise 1 of 4
Compound Meaning
What does 秘 mean?
Frequently Asked Questions about 必
Some common phrases that include 必 are '必然' (bì rán), meaning 'inevitably,' and '必须' (bì xū), meaning 'must' or 'have to.' These phrases highlight the importance of obligation or certainty in various contexts.
必 (bì) is versatile and can be used in both formal and informal contexts. It's commonly found in written language, such as in literature or official documents, but can also be used in everyday conversation to express necessity.
You can use 必 (bì) to emphasize necessity or certainty in a statement. For example, '这个计划必定成功' (zhè ge jì huà bì dìng chéng gōng) means 'This plan will certainly succeed.' It's often used in contexts where a strong assurance is expressed.
必 (bì) means 'must' or 'certainly' in Chinese. It's often used to indicate that something is necessary or inevitable. For example, in the phrase '你必去' (nǐ bì qù), it translates to 'You must go.'
You can use 必 in sentences like '你必须去' (Nǐ bìxū qù), which means 'You must go.'
Yes, 必 is appropriate in both formal and informal contexts, but be mindful of its strong implication.
Common phrases include 必须 (bìxū, must) and 必然 (bìrán, inevitably).
