# HSK 3 Modal Adverbs: 大概, 必须, 差不多, 一定, 好像, 几乎 | HSKReady Canonical: https://hskready.app/en/grammar/hsk-3-adverbs-5e129a3e9b Language: en Content ID: web-grammar-hsk-3-adverbs-5e129a3e9b HSK levels: 3 Updated: 2026-10-23T04:55:49.488Z Scope: published website educational content; full vocabulary, question bank and mock exams remain in the app. Learn how to use the six HSK 3 modal adverbs (大概, 必须, 差不多, 一定, 好像, 几乎) with clear sentence structures, meaning contrasts, and common error fixes. Grammar [HSK 3 · Word classes › Adverbs › Modal adverbs](https://hskready.app/en/grammar/hsk-3#hsk-3-g021) # HSK 3 Modal Adverbs (情态副词): 大概, 必须, 差不多, 一定, 好像, and 几乎 In the HSK 3 syllabus outline, six key words—大概, 必须, 差不多, 一定, 好像, and 几乎—are grouped under modal adverbs (情态副词). Together, they allow speakers to express obligation, certainty, probability, impression, and near-completion before a verb or adjective predicate. Subject Modal Adverb Verb / Adjective Predicate Example sentence 你必须在八点以前到学校。 Nǐ bìxū zài bā diǎn yǐqián dào xuéxiào. You must arrive at school before eight o'clock. 必须 sits before the prepositional phrase and verb to express an objective rule or requirement. A common mistake × 我们准备得几乎了。 Wǒmen zhǔnbèi de jīhū le. Intended: We are almost ready. Incorrect: 几乎 is strictly an adverb and cannot stand alone as a complement after 得 or at the end of a clause. Replace it with 差不多. Corrected example: 我们准备得差不多了。 **Read the full explanation and examples** ## What Are Modal Adverbs and Where Do They Go? In the supplied HSK 3 grammar outline, the category 情态副词 (modal adverbs) covers six items: 大概, 必须, 差不多, 一定, 好像, and 几乎. While English often expresses these ideas using modal verbs, adjectives, or sentence-final phrases, Mandarin places these adverbs directly inside the verb phrase to show the speaker's assessment of necessity, likelihood, or closeness to a limit. Subject Modal Adverb Verb / Adjective Predicate A useful default is subject + adverb + predicate. 大概 and 好像 can also evaluate a whole clause before its subject. Scope matters for other words too: in 几乎全班同学都来了, 几乎 comes before the quantified subject. Do not treat the default order as the only possible position. 大概 / 好像 Subject Verb / Adjective Predicate ## Necessity and Firm Judgment: 必须 vs. 一定 Learners often mix up 必须 and 一定 because both can translate to must in English. However, they belong to different communicative situations and behave differently with negation. - 必须 presents an action as necessary, whether because of a rule, circumstances, or the speaker’s insistence. To say that something is not necessary, 不必 or 不用 is the usual choice. - 一定 can express a firm commitment or a confident inference. In a request such as 你一定要来, it also strengthens the speaker’s insistence. Its uses overlap with necessity; do not reduce the contrast to objective versus subjective. - In negative sentences, 一定 + 不 means definitely not, whereas 不一定 means not necessarily or maybe not. 你必须在八点以前到学校。 Nǐ bìxū zài bā diǎn yǐqián dào xuéxiào. You must arrive at school before eight o'clock. 必须 sits before the prepositional phrase and verb to express an objective rule or requirement. 我明天一定给你回电话。 Wǒ míngtiān yídìng gěi nǐ huí diànhuà. I will definitely call you back tomorrow. 一定 expresses the speaker's strong personal commitment. 外边这么冷，他一定不想出门。 Wàibian zhème lěng, tā yídìng bù xiǎng chūmén. It is so cold outside; he definitely does not want to go out. 一定 + 不 expresses a confident negative inference. ## Probability and Impression: 大概 vs. 好像 When you are not completely sure about a statement, 大概 and 好像 soften the claim in two distinct ways. - 大概 (probably) indicates a reasoned estimate or high-probability guess about an action or state. Note that 大概 can also modify numbers or time measurements to mean approximately, though here we focus on its modal adverb role before predicates. - 好像 (seemingly, as if) conveys a subjective impression based on sight, sound, memory, or feeling. It tells the listener that you are reporting how things appear rather than calculating odds. 他们大概已经上飞机了。 Tāmen dàgài yǐjīng shàng fēijī le. They have probably already boarded the plane. 大概 precedes the adverb 已经 and the verb phrase to indicate a probable estimate. 今天好像要下雨，你带把伞吧。 Jīntiān hǎoxiàng yào xià yǔ, nǐ dài bǎ sǎn ba. It seems like it is going to rain today; take an umbrella. 好像 expresses an impression based on current signs. ## Approaching a Limit: 差不多 vs. 几乎 Both 差不多 and 几乎 mean almost or nearly when placed before a predicate, showing that an action, state, or scope is very close to completion or totality. Even though they overlap in many everyday sentences, their tone and grammatical limits differ. 几乎 Universal Pronoun / Quantifier Phrase 都 Verb / Adjective Predicate - 差不多 is common in spoken Chinese to show that a task is nearly finished or two things are roughly the same. - 几乎 is slightly more formal and frequently pairs with universal words like 每个人 (everyone), 每天 (every day), 全 (whole), or 都 (all), as well as negative words like 没有 (none/not) to emphasize an extreme. - Structural contrast: 差不多 can be a predicate or complement meaning roughly the same, about right, or nearly finished. 几乎 cannot fill that role in 准备得几乎了; it normally modifies a following expression, as in 几乎准备好了. 我的作业差不多写完了。 Wǒ de zuòyè chàbuduō xiě wán le. My homework is almost finished. Here 差不多 acts as a modal adverb directly before the verb phrase 写完了. 全班同学几乎都去过那个公园。 Quán bān tóngxué jīhū dōu qù guo nàge gōngyuán. Almost the whole class has been to that park. 几乎 pairs naturally with 都 to show near-total scope. ## Common Learner Error: Using 几乎 as a Standalone Predicate or Complement To say that preparations are nearly complete, use 准备得差不多了, not 准备得几乎了. Another option is 几乎准备好了, where 几乎 modifies the following predicate. 差不多 is the appropriate replacement in the 得-complement here; it is not the only possible way to express almost ready. × 我们准备得几乎了。 Wǒmen zhǔnbèi de jīhū le. Intended: We are almost ready. Incorrect: 几乎 is strictly an adverb and cannot stand alone as a complement after 得 or at the end of a clause. Replace it with 差不多. Corrected example: 我们准备得差不多了。 我们准备得差不多了。 Wǒmen zhǔnbèi de chàbuduō le. We are almost ready. Correct: 差不多 can function as a standalone complement after 得 to mean nearly done. Syllabus Note: Grouping 大概, 必须, 差不多, 一定, 好像, and 几乎 under Level 3 modal adverbs (情态副词) reflects the supplied 2025-11 HSK outline (implementation label 2026-07), which defines teaching scope rather than guaranteeing the exact test version administered at a specific test center. ## Frequently asked questions **Why are 差不多 and 几乎 listed as modal adverbs (情态副词) when some textbooks call them degree or scope adverbs?** The supplied outline groups these six words under 情态副词. Other grammar books may classify them differently, so focus on their meanings and positions in actual sentences. The outline row names the category without explaining the reasons for that classification. **How do I say 'do not have to' if I cannot say 不必须?** Use 不必 or 不用 before the action: 你不用来 means you do not have to come. In this context, 你不要来 normally means do not come, so it would change the message from absence of obligation to a prohibition. **Can 大概 and 好像 be used together in the same clause?** They can occur together in speech to layer an estimate and an impression. When learning the basic patterns, choosing one usually makes the intended meaning clearer: 大概 for probably and 好像 for it seems. This is a clarity recommendation, not an HSK rule banning the combination. **Source**[hsk.cn-bj.ufileos.com · PDF page 392](https://hsk.cn-bj.ufileos.com/3.0/%E6%96%B0%E7%89%88HSK%E8%80%83%E8%AF%95%E5%A4%A7%E7%BA%B21219.pdf#page=392) ## Continue in the app Full mock exams are available in HSKReady. 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