C1 Modal Verbs 12 min read Hard

Formal Chinese Modals: Duties and Commands (应当, 理应, 务必)

Mastering formal modals allows you to navigate professional and legal Chinese environments with authority and precision.
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Grammar Rule in 30 Seconds

Use {应当|yīngdāng} for duty, {理应|lǐyīng} for moral expectation, and {务必|wùbì} for strict commands.

  • {应当|yīngdāng} indicates a general duty: {我们应当遵守规则|wǒmen yīngdāng zūnshǒu guīzé}.
  • {理应|lǐyīng} implies a logical or moral right: {他理应得到奖励|tā lǐyīng dédào jiǎnglì}.
  • {务必|wùbì} is a firm imperative for tasks: {请务必准时参加|qǐng wùbì zhǔnshí cānjiā}.
Subject + [Modal] + Verb + Object

Overview

For learners reaching the C1 level, moving beyond the versatile 应该(yīnggāi) is essential for achieving nuance and demonstrating advanced command of Chinese. While 应该(yīnggāi) covers general advice and probability, a more formal register is required in professional, academic, and legal contexts. This is the domain of 应当 (yīngdāng), 理应 (lǐyīng), and 务必 (wùbì).

These are not simply synonyms for "should"; they are precise instruments for articulating obligation from different sources of authority.

Think of 应该(yīnggāi) as a recommendation rooted in personal judgment or general common sense. In contrast, these formal modals ground the obligation externally. 应当 speaks to a moral or legal duty.

理应 asserts a logical or rational necessity. 务必 delivers a non-negotiable instruction from a position of authority.

Mastering their usage signals more than just a large vocabulary. It shows you understand the social and professional hierarchies embedded in the language. These words are staples of 书面语(shūmiànyǔ) (written language) and are used in formal speech to add weight and seriousness.

Using them correctly allows you to communicate with the precision and authority expected of an educated native speaker.

How This Grammar Works

The core principle differentiating these modals is the source of the obligation. Unlike the often subjective 应该(yīnggāi) ("I think you should..."), 应当, 理应, and 务必 shift the rationale from the speaker's opinion to an objective, external standard. The choice of modal verb is a deliberate signal about the nature of that standard.
应当 (yīngdāng): The Voice of Duty and Principle
The character 当(dāng) carries the meaning of "to bear" or "to undertake a responsibility." Thus, 应当(yīngdāng) refers to a duty one ought to bear. This obligation stems from a collective, objective source, such as:
  • Laws and Regulations: What the state or an organization requires.
  • Moral or Ethical Codes: What society deems right and just.
  • Professional Standards: The accepted conduct within a specific field.
When you use 应当, you are not giving personal advice; you are invoking a higher principle. It is impersonal and objective. For example, 作为医生，他应当把病人的健康放在第一位。( Zuòwéi yīshēng, tā yīngdāng bǎ bìngrén de jiànkāng fàng zài dì yī wèi.) (As a doctor, he ought to put his patients' health first.) The obligation here comes from medical ethics, not the speaker's personal view.
理应 (lǐyīng): The Voice of Reason and Fairness
This modal is built on the character 理(lǐ), which means "reason," "logic," or "principle." 理应(lǐyīng) therefore means "according to reason, one should..." or "it is only logical that...". The obligation is based on logical deduction, natural justice, or a conclusion that follows from a given premise. It appeals to the listener's sense of reason and fairness.
Use 理应 when you are constructing an argument or stating an outcome that is deserved and just. For instance, 这个项目他投入了最多心血，理应由他来主导。( Zhège xiàngmù tā tóurùle zuìduō xīnxuè, lǐyīng yóu tā lái zhǔdǎo.) (He invested the most effort into this project; it's only logical that he should lead it.) The reasoning is causal: maximum effort leads to the logical conclusion of leadership.
务必 (wùbì): The Voice of Command and Instruction
务必 is a forceful imperative derived from 务(wù) (affair, business; must) and 必(bì) (certainly, must). The doubling creates an emphatic, non-negotiable "must." Unlike the others, 务必 is not about morality or logic, but about procedural necessity and authority. It is an instruction from a superior to a subordinate, or from a system (like an institution or an application) to a user.
This modal is used to ensure a critical task is completed without fail. It is directive and action-oriented. For example, in a formal notice: 请各位同事务必在下午五点前完成安全培训。( Qǐng gèwèi tóngshì wùbì zài xiàwǔ wǔ diǎn qián wánchéng ānquán péixùn.) (All colleagues must complete the security training before 5 PM.) The source of the obligation is the company's authority, and the purpose is to compel action.

Formation Pattern

1
The grammatical structure for these modals is straightforward, but their negation patterns are complex and require careful attention. These differences are a key area where advanced learners can distinguish themselves.
2
1. Basic Affirmative Structure
3
For 应当 and 理应, the pattern is Subject + Modal + Verb Phrase. For 务必, the subject is often omitted in imperative contexts.
4
| Modal | Pattern | Example | Translation |
5
| :--- | :--- | :--- | :--- |
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| 应当 | Subj + 应当 + VP | 公民应当遵守法律。( Gōngmín yīngdāng zūnshǒu fǎlǜ.) | Citizens ought to abide by the law. |
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| 理应 | Subj + 理应 + VP | 他理应获得赔偿。( Tā lǐyīng huòdé péicháng.) | He should, by rights, receive compensation. |
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| 务必 | (Subj) + 务必 + VP | (您)务必准时出席。( (Nín) wùbì zhǔnshí chūxí.) | You must attend on time. |
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2. Negation Patterns
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Negation is not uniform and directly reflects the modal's core meaning. This is a common point of error.
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| Modal | Affirmative | Correct Negation | Incorrect Negation | Explanation |
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| :--- | :--- | :--- | :--- | :--- |
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| 应当 | 应当做 | 不应当做 / 不应做 | 应当不做 | 不应 is more formal and common in writing than 不应当. |
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| 理应 | 理应做 | (Shift to 不应该) | 不理应 / 理应不 | 理应 asserts a positive logic; it's rarely negated. Speakers switch to a general 不应该 or phrase it as 按理说不该 (logically shouldn't). |
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| 务必 | 务必做 | 务必不要 / 务必别 | *不务必 | 务必 is a command to act. To command inaction, you must use 务必 + 不要 (don't). More formal options include 切勿 or 切莫. |
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An example of a correct negative command with 务必 is: 系统升级期间，务必不要关闭电源。( Xìtǒng shēngjí qíjiān, wùbì bùyào guānbì diànyuán.) (During the system upgrade, you must not turn off the power.)
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3. Adverb Placement
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Adverbs of scope or degree, such as 都(dōu) or 也(yě), are placed before the modal verb.
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我们都应当承担起自己的责任。( Wǒmen dōu yīngdāng chéngdān qǐ zìjǐ de zérèn.) (We all ought to shoulder our own responsibilities.)
20
他理应也收到通知了。( Tā lǐyīng yě shōudào tōngzhīle.) (Logically, he should have also received the notification.)

When To Use It

Choosing the right modal depends entirely on the context and the source of authority you wish to invoke.
Use 应当 (yīngdāng) for formal duties and principles:
This modal is the cornerstone of formal, rule-based language. You will find it everywhere from legal documents to academic discourse.
  • Legal and Regulatory Contexts: 根据本协议，甲方应当在三十天内支付款项。( Gēnjù běn xiéyì, jiǎfāng yīngdāng zài sānshí tiān nèi zhīfù kuǎnxiàng.) (According to this agreement, Party A shall make the payment within 30 days.)
  • Discussions of Morality and Social Responsibility: 企业在追求利润的同时，也应当履行其社会责任。( Qǐyè zài zhuīqiú lìrùn de tóngshí, yě yīngdāng lǚxíng qí shèhuì zérèn.) (While pursuing profit, corporations ought to fulfill their social responsibilities.)
  • Formal Recommendations from a Position of Expertise: 研究表明，儿童每天应当保证至少一小时的户外活动。( Yánjiū biǎomíng, értóng měitiān yīngdāng bǎozhèng zhìshǎo yī xiǎoshí de hùwài huódòng.) (Research indicates that children should be guaranteed at least one hour of outdoor activity per day.)
Use 理应 (lǐyīng) for logical conclusions and fairness:
This modal is your tool for building a rational case or appealing to a sense of justice.
  • Argumentation and Debate: 既然所有前提都成立，这个结论理应是正确的。( Jìrán suǒyǒu qiántí dōu chénglì, zhège jiélùn lǐyīng shì zhèngquè de.) (Since all the premises are valid, this conclusion should logically be correct.)
  • Appeals to Fairness and Justice: 他是事件的受害者，理应得到公开道歉。( Tā shì shìjiàn de shòuhàizhě, lǐyīng dédào gōngkāi dàoqiàn.) (He is the victim of the incident; he deserves a public apology by all rights.)
  • Stating a Reasonable Expectation: 他乘坐的是最早的一班飞机，现在理应已经到达了。( Tā chéngzuò de shì zuìzǎo de yī bān fēijī, xiànzài lǐyīng yǐjīng dàodále.) (He took the earliest flight, so he should have arrived by now.)
Use 务必 (wùbì) for essential instructions and commands:
This modal is used when compliance is critical. It is direct, authoritative, and leaves no room for negotiation. It is often softened with 请(qǐng).
  • Official Instructions and Procedures: 进入无尘车间前，务必更换专用服装。( Jìnrù wúchén chējiān qián, wùbì gēnghuàn zhuānyòng fúzhuāng.) (Before entering the cleanroom, you must change into specialized clothing.)
  • Urgent and Important Requests in Professional Communication: 这份文件关系到整个项目的进程，请您务必仔细审阅。( Zhè fèn wénjiàn guānxì dào zhěnggè xiàngmù de jìnchéng, qǐng nín wùbì zǐxì shěnyuè.) (This document affects the entire project's progress; please be sure to review it carefully.)
  • Public Notices and Safety Warnings: 台风登陆期间，市民务必留在家中，切勿外出。( Táifēng dēnglù qíjiān, shìmín wùbì liú zài jiāzhōng, qièwù wàichū.) (During the typhoon, citizens must remain at home and should not go outside.)

Common Mistakes

Errors in using these modals often stem from register clash, confusion with similar words, or incorrect negation.
1. Using Formal Modals in Casual Contexts
This is the most frequent error. Using 应当 or 务必 with close friends sounds stiff, distant, or even sarcastic. It's like wearing a tuxedo to go grocery shopping.
  • Wrong: 哥们儿，你理应请我喝杯咖啡。( Gēmenr, nǐ lǐyīng qǐng wǒ hē bēi kāfēi.)
  • Right: 哥们儿，你应该请我喝杯咖啡。( Gēmenr, nǐ yīnggāi qǐng wǒ hē bēi kāfēi.)
2. Confusing 务必 with 必须 (bìxū)
While both mean "must," their implied authority is different. 必须 expresses a general, objective necessity, while 务必 is an instruction given by someone with authority.
| Feature | 必须 (bìxū) | 务必 (wùbì) |
| :--- | :--- | :--- |
| Nature | Objective necessity, constraint | Subjective command, instruction |
| Source | Can be internal or external circumstances | External authority (a person, a rule) |
| Usage | Can be used for oneself or others | Primarily used to instruct others |
  • Correct (必须): 我今天必须完成这个任务。( Wǒ jīntiān bìxū wánchéng zhège rènwù.) (I must finish this task today. - self-imposed or objective deadline)
  • Correct (务必): 经理说，我们今天务必完成这个任务。( Jīnglǐ shuō, wǒmen jīntiān wùbì wánchéng zhège rènwù.) (The manager said we must finish this task today. - an order)
  • Incorrect: Using 务必 on a superior is a serious breach of etiquette. Never tell your boss: *您务必批准我的假期。
3. Incorrect Negation of 务必
As noted in the formation section, 务必 cannot be negated with 不. This is an absolute rule.
  • Wrong: *进入考场，不务必携带手机。
  • Right: 进入考场，务必不要携带手机。( Jìnrù kǎochǎng, wùbì bùyào xiédài shǒujī.) (You must not bring your mobile phone into the examination hall.)
4. Confusing 理应 with the idiom 理所当然 (lǐsuǒdāngrán)
These are grammatically different. 理应 is a modal verb that precedes another verb. 理所当然 is a four-character idiom (chengyu) that functions as an adjective or adverb, meaning "as a matter of course" or "it goes without saying."
  • Modal Verb (理应): 帮助遇到困难的同事，我们理应伸出援手。( Bāngzhù yùdào kùnnán de tóngshì, wǒmen lǐyīng shēnchū yuánshǒu.) (When colleagues face difficulties, we should lend a helping hand.)
  • Idiom (理所当然): 他认为别人对他的帮助是理所当然的。( Tā rènwéi biérén duì tā de bāngzhù shì lǐsuǒdāngrán de.) (He takes others' help for granted / thinks of it as a matter of course.)

Real Conversations

These modals are rare in casual chat but common in professional and formal digital communication.

S

Scenario 1

Project Manager's Email to the Team
S

Subject

【重要】关于V2.1版本发布前的最终测试

大家好，

为了保证V2.1版本的顺利发布，我们 应当 遵循既定的测试标准，确保所有核心功能都经过了严格的回归测试。请各位开发人员在今天下班前，务必 将自己负责模块的测试结果更新到Jira系统中。测试人员 理应 已经收到了最新的测试用例，如有问题请立即联系我。

谢谢大家！

A

Analysis

应当 refers to established standards. 务必 gives a direct, time-sensitive command. 理应 states a logical expectation.*
S

Scenario 2

HR Announcement in a DingTalk (钉钉) Group

【通知】关于2026年度健康体检的安排

各位同事：

公司年度健康体检将于4月10日至20日进行。根据公司福利政策，全体正式员工 应当 参加。请大家 务必 在本周五前通过此链接预约您的体检时间。预约成功后，系统会自动发送确认邮件。

预约链接：[link]

A

Analysis

应当 states the obligation based on company policy. 务必 provides a clear, actionable instruction with a deadline.*
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Scenario 3

University Professor's Feedback on a Student's Thesis Draft

你的第三章论证很有力，但在数据分析部分，你 应当 补充更多关于样本选择的说明，这是学术规范的要求。另外，你在3.4节得出的结论有些跳跃，从你给出的证据来看，理应 导向一个更保守的结论。请在下一稿中 务必 修正这个问题。

A

Analysis

应当 references academic standards. 理应 points out a logical flaw in the argument. 务必 gives a firm directive for the next revision.*

Quick FAQ

Q: Can I ever use 应当 in a spoken conversation?

Yes, but only in very formal contexts. You might hear it in a business presentation, a legal consultation, an academic lecture, or a formal ceremony. For everyday conversation, even among colleagues, 应该 is far more natural.

Q: Is 务必 considered rude?

Not at all, provided it's used in the correct hierarchical or professional context. It is a sign of seriousness and importance, not aggression. Paired with 请, as in 请务必, it is a standard and polite way to make a critical request in a professional setting.

Q: Does 理应 always need a reason stated in the same sentence?

No. Often the reason is implied by the preceding context. Using 理应 signals to the listener that you have a logical basis for your statement, making your argument sound more considered and objective, even if the premise isn't spelled out immediately.

Q: What's the fastest way to choose between 应当 and 应该?

Ask yourself: is the obligation based on a formal rule, law, or established ethical principle? If yes, use 应当. If it's general advice, a suggestion, a personal opinion, or a simple expectation, use 应该.

Q: Can I use 务必 to describe my own intentions, like "I must finish this"?

This is extremely rare and generally unnatural. It sounds like you are giving yourself a formal, external command. To express strong personal resolve, you should use 我必须 (wǒ bìxū), 我一定得 (wǒ yīdìng děi), or 我定要 (wǒ dìng yào).

Q: What is the stylistic difference between 不应 and 不应该?

不应 is the more formal and literary negation of 应当. You will see it in written regulations, legal text, and formal pronouncements (e.g., 此处不应停车 - No parking here). 不应该 is the universally common "shouldn't" that works in almost any context, spoken or written.

Q: Do these words have roots in Classical Chinese?

Yes. Their formal, literary feel comes from their long history in Classical Chinese literature and documents. This is why they are strongly associated with 书面语 (written language) and are used to evoke a sense of tradition, authority, and formality.

Modal Usage Table

Modal Nuance Formality Structure Example
应当
General Duty
Formal
Subj + 应当 + Verb
我们应当学习
理应
Moral Logic
Formal
Subj + 理应 + Verb
他理应获胜
务必
Strict Command
Very Formal
Subj + 务必 + Verb
请务必准时

Meanings

These modals express varying degrees of obligation, from moral expectation to strict administrative command.

1

General Duty

Expresses what is appropriate or expected.

“{学生应当尊重老师|xuéshēng yīngdāng zūnzhòng lǎoshī}”

“{我们应当保护环境|wǒmen yīngdāng bǎohù huánjìng}”

2

Moral Logic

Something that is deserved or logically expected.

“{他理应受到惩罚|tā lǐyīng shòudào chéngfá}”

“{我们理应互相帮助|wǒmen lǐyīng hùxiāng bāngzhù}”

3

Strict Command

A formal, non-negotiable instruction.

“{请务必保持安静|qǐng wùbì bǎochí ānjìng}”

“{务必在明天之前提交|wùbì zài míngtiān zhīqián tíjiāo}”

Reference Table

Reference table for Formal Chinese Modals: Duties and Commands (应当, 理应, 务必)
Form Structure Example
Affirmative
Subject + Modal + Verb
我们应当遵守
Negative
Subject + 不 + Modal + Verb
我们不应当迟到
Question
Subject + Modal + Verb + 吗?
我们应当去吗?
Command
请 + 务必 + Verb
请务必参加
Logical
Subject + 理应 + Verb
他理应成功

Formality Spectrum

Formal
务必完成工作。

务必完成工作。 (Workplace)

Neutral
请完成工作。

请完成工作。 (Workplace)

Informal
快点做完。

快点做完。 (Workplace)

Slang
搞定它！

搞定它！ (Workplace)

Modal Obligation Map

Obligation

Duty

  • 应当 Should

Logic

  • 理应 Ought to

Command

  • 务必 Must
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Examples by Level

1

我们应当学习。

We should study.

2

请务必准时。

Please be on time.

3

这理应是我的。

This should be mine.

4

应当多喝水。

Should drink more water.

1

我们应当遵守交通规则。

We should follow traffic rules.

2

请务必带上护照。

Please be sure to bring your passport.

3

他理应得到道歉。

He deserves an apology.

4

应当早点休息。

Should rest earlier.

1

公司应当重视员工福利。

The company should value employee benefits.

2

请务必在周五前回复。

Please be sure to reply by Friday.

3

这理应是公平的竞争。

This should be a fair competition.

4

我们理应保护弱势群体。

We ought to protect vulnerable groups.

1

政府应当采取措施。

The government should take measures.

2

务必确保数据安全。

Be sure to ensure data security.

3

他理应获得这次晋升。

He deserves this promotion.

4

应当考虑长远影响。

Should consider long-term effects.

1

学术界应当保持严谨。

The academic community should maintain rigor.

2

务必严格执行相关规定。

Be sure to strictly enforce relevant regulations.

3

正义理应得到伸张。

Justice ought to be served.

4

应当审慎评估风险。

Should carefully assess risks.

1

此项政策理应受到广泛关注。

This policy ought to receive widespread attention.

2

务必贯彻落实会议精神。

Be sure to implement the spirit of the meeting.

3

应当反思历史教训。

Should reflect on historical lessons.

4

理应建立长效机制。

Ought to establish a long-term mechanism.

Easily Confused

Formal Chinese Modals: Duties and Commands (应当, 理应, 务必) vs 应该 vs 应当

Both mean 'should'.

Formal Chinese Modals: Duties and Commands (应当, 理应, 务必) vs 务必 vs 必须

Both mean 'must'.

Formal Chinese Modals: Duties and Commands (应当, 理应, 务必) vs 理应 vs 应该

Both imply expectation.

Common Mistakes

✗

务必去。

✓

请务必去。

务必 is an adverb, needs a softener like 请.
✗

不务必做。

✓

不必做。

Cannot negate 务必 directly.
✗

你应该理应去。

✓

你理应去。

Don't stack modals.
✗

我务必想去。

✓

我务必去。

务必 modifies the verb, not the desire.

Sentence Patterns

我们___遵守规则。

他___得到这个机会。

请___在明天前提交。

我们___反思错误。

Real World Usage

Academic Paper very common

研究应当深入。

Business Email common

请务必确认。

Legal Contract common

双方理应遵守。

Political Speech common

我们应当团结。

Safety Manual common

务必佩戴头盔。

Debate occasional

他理应获胜。

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🎯

Use 务必 for impact

In professional emails, use 务必 to highlight critical tasks.
⚠️

Avoid 务必 with friends

It sounds like you are giving orders.
💡

理应 for arguments

Use it when you want to emphasize fairness.
💬

Formal tone

Use 应当 in writing to sound educated.

Smart Tips

Use 务必 to ensure your request is taken seriously.

请完成这个任务。 → 请务必完成这个任务。

Use 应当 instead of 应该 for a better grade.

我们应该保护环境。 → 我们应当保护环境。

Use 理应 to emphasize that someone deserves something.

他应该赢。 → 他理应赢。

Pair 务必 with 请 for politeness.

务必准时。 → 请务必准时。

Pronunciation

wù-bì

Tone consistency

Ensure the 4th tone of 务 is sharp.

Commanding

务必↑准时↓

High pitch on the modal for emphasis.

Memorize It

Mnemonic

Think of '应当' as a duty (D), '理应' as a right (R), and '务必' as a must (M).

Visual Association

Imagine a judge (应当), a scales of justice (理应), and a strict guard (务必).

Rhyme

应当是责任，理应是公平，务必是命令，记清别弄混。

Story

The CEO (务必) told the team they must finish the project. The team felt they (应当) work hard. They knew they (理应) get a bonus if they succeeded.

Word Web

应当理应务必应该责任公平命令必须

Challenge

Write three sentences about your daily work using each of the three modals.

Cultural Notes

务必 is common in official government documents.

应当 is preferred in formal academic writing.

理应 is often used in legal/business contexts.

These modals evolved from classical Chinese auxiliary verbs.

Conversation Starters

“

你认为我们应当如何保护环境？

“

谁理应获得这次奖项？

“

明天会议务必准备什么？

“

我们应当改变现状吗？

Journal Prompts

Write about a duty you have at work.
Argue why a certain person deserves a promotion.
Write a memo to your team about a deadline.
Discuss a moral dilemma.

Common Mistakes

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

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Test Yourself

Fill in the blank.

我们___保护环境。

✓ Correct! ✗ Not quite. Correct answer: 应当
应当 is the standard formal duty.
Which is correct? Multiple Choice

请___准时参加。

✓ Correct! ✗ Not quite. Correct answer: 务必
务必 is used for commands.
Find the error. Error Correction

Find and fix the mistake:

他不务必去。

✓ Correct! ✗ Not quite. Correct answer: 他不必去
Cannot negate 务必.
Reorder the sentence. Sentence Reorder

Arrange the words in the correct order:

All words placed

Click words above to build the sentence

✓ Correct! ✗ Not quite. Correct answer: 请务必准时参加
Standard order.
Translate to Chinese. Translation

He deserves a reward.

Answer starts with: 他理应...

✓ Correct! ✗ Not quite. Correct answer: 他理应得到奖励
理应 implies deserving.
Build a sentence. Sentence Building

Use 应当 for duty.

✓ Correct! ✗ Not quite. Correct answer: 我们应当努力
Standard duty.
Sort by formality. Grammar Sorting

Which is most formal?

✓ Correct! ✗ Not quite. Correct answer: 务必
务必 is the most formal.
Match modal to meaning. Match Pairs

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

✓ Correct! ✗ Not quite. Correct answer: Correct
务必 is a command.

Score: /8

Practice Exercises

8 exercises
Fill in the blank.

我们___保护环境。

✓ Correct! ✗ Not quite. Correct answer: 应当
应当 is the standard formal duty.
Which is correct? Multiple Choice

请___准时参加。

✓ Correct! ✗ Not quite. Correct answer: 务必
务必 is used for commands.
Find the error. Error Correction

Find and fix the mistake:

他不务必去。

✓ Correct! ✗ Not quite. Correct answer: 他不必去
Cannot negate 务必.
Reorder the sentence. Sentence Reorder

准时 / 务必 / 请 / 参加

✓ Correct! ✗ Not quite. Correct answer: 请务必准时参加
Standard order.
Translate to Chinese. Translation

He deserves a reward.

✓ Correct! ✗ Not quite. Correct answer: 他理应得到奖励
理应 implies deserving.
Build a sentence. Sentence Building

Use 应当 for duty.

✓ Correct! ✗ Not quite. Correct answer: 我们应当努力
Standard duty.
Sort by formality. Grammar Sorting

Which is most formal?

✓ Correct! ✗ Not quite. Correct answer: 务必
务必 is the most formal.
Match modal to meaning. Match Pairs

务必 - Command

✓ Correct! ✗ Not quite. Correct answer: Correct
务必 is a command.

Score: /8

Practice Bank

10 exercises
Reorder the words to form a formal instruction. Sentence Reorder

{查收|cháshōu} / {请|qǐng} / {务必|wùbì} / {邮件|yóujiàn} / {相关|xiāngguān}

✓ Correct! ✗ Not quite. Correct answer: {请|qǐng}{务必|wùbì}{查收|cháshōu}{相关|xiāngguān}{邮件|yóujiàn}
Translate this into formal Chinese. Translation

Students should respect their teachers.

✓ Correct! ✗ Not quite. Correct answer: {学生|xuésheng}{应当|yīngdāng}{尊敬|zūnjìng}{师长|shīzhǎng}。
Match the modal with its primary nuance. Match Pairs

Match the columns:

✓ Correct! ✗ Not quite. Correct answer: 应当:Legal/Moral Duty, 务必:Urgent Instruction, 理应:Logical Necessity
Select the best fit for an argumentative essay. Fill in the Blank

{由于|yóuyú}{他的|tāde}{杰出|jiéchū}{贡献|gòngxiàn}，{他|tā}___ {获得|huòdé}{奖学金|jiǎngxuéjīn}。

✓ Correct! ✗ Not quite. Correct answer: 理应
Find the formal error. Error Correction

{公司|gōngsī}{必须|bìxū}{务必|wùbì}{按时|ànshí}{发|fā}{工资|gōngzī}。

✓ Correct! ✗ Not quite. Correct answer: {公司|gōngsī}{应当|yīngdāng}{按时|ànshí}{发放|fāfàng}{薪资|xīnzī}。
Which is a common negation in formal writing? Multiple Choice

Choose the formal negation:

✓ Correct! ✗ Not quite. Correct answer: {此|cǐ}{事|shì}{不应|bùyīng}{被|bèi}{忽视|hūshì}。
Reorder for a warning sign. Sentence Reorder

{务必|wùbì} / {电源|diànyuán} / {离开|líkāi} / {关闭|guānbì} / {前|qián}

✓ Correct! ✗ Not quite. Correct answer: {离开|líkāi}{前|qián}{务必|wùbì}{关闭|guānbì}{电源|diànyuán}
Translate: 'Be sure to keep the secret.' Translation

Be sure to keep the secret.

✓ Correct! ✗ Not quite. Correct answer: {请|qǐng}{务必|wùbì}{保密|bǎomì}。
Which one shows 'logical right'? Fill in the Blank

{付出|fùchū}{劳动|láodòng}{之后|zhīhòu}，___ {得到|dédào}{报酬|bàochóu}。

✓ Correct! ✗ Not quite. Correct answer: 理应
Select the sentence with the most professional 'command' tone. Multiple Choice

Instruction for a remote interview:

✓ Correct! ✗ Not quite. Correct answer: {请|qǐng}{务必|wùbì}{准时|zhǔnshí}{参加|cānjiā}{面试|miànshì}。

Score: /10

FAQ (8)

No, it sounds too authoritative. Use '一定要' instead.

They are similar, but 应当 is more formal.

Use '不必' or '请勿'.

To show moral entitlement.

Only in formal speeches.

No, avoid stacking modals.

It is an adverbial modal.

应当.

Scaffolded Practice

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Mastery Progress

Needs Practice

Improving

Strong

Mastered

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In Other Languages

Spanish high

deber

Spanish conjugates for person.

French high

devoir

French uses different forms for past/future.

German high

sollen

German has complex modal stacking.

Japanese moderate

べき

Japanese grammar is agglutinative.

Arabic high

يجب

Arabic has gender agreement.

Chinese high

应该

These are formal variants.

Learning Path

Prerequisites

Previous
Formal Hedging in Chinese: It Seems, I'm Afraid, Perhaps (似乎, 恐怕, 或许)
Next
Formal Degree Modifiers: 极其, 至为, 颇为

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