Must, have to; indicating something is mandatory or absolutely necessary.
Word in 30 Seconds
- Expresses strong obligation or necessity.
- Used before verbs or adjectives.
- Common in rules, duties, and requirements.
Overview
“必须”是汉语中最基本的表示必要性或强制性的助动词之一，在日常交流中非常普遍。它传达了一种强烈的义务感，表明某事是不可或缺的，不这样做就会带来后果或不符合规定。其用法简单直接，常用于表达规则、要求、承诺或客观的必要条件。
“必须”通常放在动词或形容词前面，构成谓语的一部分。它可以单独使用，也可以与其他副词（如“一定”、“一定得”）或情态动词组合使用，以增强语气。在否定句中，我们通常使用“不必”或“不一定”，表示不需要或不一定需要做某事，而不是直接否定“必须”。
“必须”常出现在以下语境中：
逻辑推断：例如，“他是中国人，他必须会说中文。”（虽然这是常识，但表达为一种必然）
“必须”与“应该”和“需要”在表达必要性方面有所不同。
- 应该 (yīnggāi)：表示建议、责任或合乎情理，但不如“必须”强制。例如，“你应该多休息。”（建议）
- 需要 (xūyào)：表示有需求或必要，但语气比“必须”稍弱，有时可以指客观上的需求而非强制。
- 得 (děi)：与“必须”非常接近，常用于口语，表示必须、一定。例如，“我得走了。”（口语化的“我必须走了”）
“必须”是最强烈的，表示不容置疑的强制性。
Examples
你必须按时完成作业。
everydayYou must finish your homework on time.
所有乘客必须系好安全带。
formalAll passengers must fasten their seatbelts.
我必须走了，不然要迟到了。
informalI have to go now, or I'll be late.
研究必须基于可靠的数据。
academicResearch must be based on reliable data.
Common Collocations
Common Phrases
必须做
must do
必须完成
must complete
必须停止
must stop
Often Confused With
'应该' suggests recommendation or moral obligation, while '必须' indicates a stronger, unavoidable requirement.
'需要' indicates a need or requirement, but '必须' implies a stronger sense of compulsion or lack of alternatives.
Grammar Patterns
How to Use It
Usage Notes
The word '必须' carries a strong sense of obligation and is often used in formal settings like rules, laws, or official instructions. In casual conversation, '得' (děi) is frequently used as a more colloquial substitute for '必须'. Be mindful of the context to choose the most appropriate term.
Common Mistakes
A common mistake is directly negating '必须' with '不必须'. The correct negation for '必须' is typically '不必' (bùbì) or '不一定' (bù yīdìng), meaning 'not necessarily' or 'no need to'. Using '必须' too frequently can make speech sound overly demanding or rigid.
Tips
Emphasize Necessity Clearly
Use '必须' when you want to strongly convey that an action is unavoidable or absolutely required.
Avoid Direct Negation
Instead of '不必须', use '不必' or '不一定' to express lack of necessity or obligation.
Rules and Social Order
The concept of '必须' is crucial in maintaining order in Chinese society, from traffic rules to family obligations.
Word Origin
The character '必' originally depicted a person bending down, signifying necessity or inevitability. '须' means 'need' or 'must'. Together, they form a strong expression of requirement.
Cultural Context
In Chinese culture, emphasizing '必须' often relates to fulfilling duties, respecting hierarchy, and adhering to social norms. It reflects a value placed on responsibility and order.
Memory Tip
Think of '必须' as a locked door ('必' sounds like 'bi', 'bi' - 'be' a lock) that you absolutely have to get through ('须' sounds like 'xu', 'xu' - 'xu' needs to be opened).
Frequently Asked Questions
4 questions“必须”表示强制性的、不可避免的要求，不这样做会有严重后果。而“应该”表示建议、责任或合乎情理，语气较弱，不一定有强制性。
“必须”通常用在句子的谓语部分，放在动词或形容词前面，例如“我必须去”或“这个必须做好”。
通常不直接否定“必须”，而是用“不必”或“不一定”来表示“不需要”或“不一定需要”，例如“你不必来”表示“不需要来”。
“必须”和“得”都表示强制性，但“得”更口语化，语气可能稍显轻松一些。例如，“我得走了”比“我必须走了”听起来更随意一些。
Test Yourself
进入图书馆，你___保持安静。
进入图书馆保持安静是规定，具有强制性，所以用“必须”。
下列哪个句子表达了强烈的义务？
“必须”表示强烈的义务或必然性，最符合题意。
我 / 必须 / 完成 / 这个 / 项目 / 必须
“必须”作为助动词，通常放在动词“完成”前面。
Score: /3
Summary
Must, have to; indicating something is mandatory or absolutely necessary.
- Expresses strong obligation or necessity.
- Used before verbs or adjectives.
- Common in rules, duties, and requirements.
Emphasize Necessity Clearly
Use '必须' when you want to strongly convey that an action is unavoidable or absolutely required.
Avoid Direct Negation
Instead of '不必须', use '不必' or '不一定' to express lack of necessity or obligation.
Rules and Social Order
The concept of '必须' is crucial in maintaining order in Chinese society, from traffic rules to family obligations.
Examples
4 of 4你必须按时完成作业。
You must finish your homework on time.
所有乘客必须系好安全带。
All passengers must fasten their seatbelts.
我必须走了，不然要迟到了。
I have to go now, or I'll be late.
研究必须基于可靠的数据。
Research must be based on reliable data.
Related Content
This Word in Other Languages
Related Phrases
Related Vocabulary
More general words
一下儿
A1a bit, a moment
点儿
A1a little bit
有点儿
A1a little, somewhat (negative connotation)
一下
A2A bit; a moment (used after a verb).
异样
B1different; unusual; strange
关于
A1about, concerning
快要
A2to be about to (happen)
大约
B1Used to show that a number or amount is not exact; approximately.
上边
A2above, on top
上面
A1on, above, over
