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March 24, 2026
必须(必須)bìxū(bi4xu1)
必须 (bìxū) means 'to have to' or 'must,' indicating a necessity or obligation. It is commonly used when expressing requirements or duties, often implying that there is no alternative option available. In various contexts, it can denote both formal and informal obligations.
Frequency#214DifficultyMedium
Cultural Note
In Chinese culture, there is a strong emphasis on duty and obligation, whether towards family, work, or society. The term 必须 encapsulates this sense of responsibility, often reflecting traditional values where fulfilling obligations is paramount.
Memory Tip
Think of 必 (bì) as 'certain' and 需 (xū) as 'need.' Visualize a situation where you must certainly need something crucial, like a key to open a door, representing the necessity of the word 'must.' Imagine a key with the label '必' attached to it, which you cannot proceed without.
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AI Study Notes for 必须
Quick Contrast
必须 (bìxū) vs 应该 (yīnggāi) — use 必须 when indicating an obligation with no alternatives, while 应该 suggests a recommendation or expectation.
Memory Mnemonic
Think of 必 (bì) as 'certain' and 需 (xū) as 'need.' Visualize a situation where you must certainly need something crucial, like a key to open a door, representing the necessity of the word 'must.' Imagine a key with the label '必' attached to it, which you cannot proceed without.
Usage Notes
Be careful not to confuse 必须 with 需要 (xūyào), which means 'to need' but is less forceful. Use 必须 in formal contexts, such as rules or laws, as well as in everyday situations when expressing personal obligations. Remember, the tone is critical; ensure you pronounce the fourth tone (必) and the first tone (须) correctly.
HSK Study Tips
At HSK level 3, 必须 is a fundamental word that connects to other verbs expressing obligation or necessity, such as 需要 (xūyào) and 应该 (yīnggāi). Focus on using it in sentences to express what you must do, which reinforces your understanding of modality in Mandarin.
Cultural Note
In Chinese culture, there is a strong emphasis on duty and obligation, whether towards family, work, or society. The term 必须 encapsulates this sense of responsibility, often reflecting traditional values where fulfilling obligations is paramount.
Common Mistakes
Learners often confuse 必须 with 需要, leading to incorrect usage. For example, saying '我需要去上班' (I need to go to work) instead of '我必须去上班' (I must go to work) can dilute the sense of obligation.
AI-enhanced 2026-03-24
Pronunciation of 必须
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Grammar Patterns of 必须
必须 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 4 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.
In Chinese culture, there is a strong emphasis on duty and obligation, whether towards family, work, or society. The term 必须 encapsulates this sense of responsibility, often reflecting traditional values where fulfilling obligations is paramount.
Frequently Asked Questions about 必须
Yes, but it's more formal than 需要, so use it when emphasizing a strong obligation.
Not exactly; 应该 suggests a recommendation or suggestion, while 必须 indicates a requirement.
You can say '我必须去上班' (I must go to work) to express a strong obligation.
