# HSK 3 Grammar: 该……了 (It Is Time To...) Structure and Usage | HSKReady Canonical: https://hskready.app/en/grammar/hsk-3-fixed-patterns-g052 Language: en Content ID: web-grammar-hsk-3-g052 HSK levels: 3 Updated: 2026-10-23T04:56:01.720Z Scope: published website educational content; full vocabulary, question bank and mock exams remain in the app. Learn how to use the Chinese fixed pattern 该……了 (gāi... le) at HSK Level 3 to say it is time for an action or someone's turn, with clear examples and contrasts. Grammar [HSK 3 · Fixed patterns](https://hskready.app/en/grammar/hsk-3#hsk-3-g052) # HSK 3 Fixed Frame 该……了: Expressing That It Is Time to Do Something The fixed frame 该……了 indicates that the proper time or moment for an action, change, or turn has arrived. It combines the modal auxiliary 该 with the change-of-state particle 了. Subject / Topic 该 Verb Phrase / Adjective 了 Example sentence 十一点了，你该睡觉了。 shí yī diǎn le , nǐ gāi shuì jiào le . It is eleven o'clock; it is time for you to go to sleep. Used as a practical reminder triggered by the current time. **Read the full explanation and examples** ## Core Meaning and Syllabus Scope In the official HSK 3 grammar outline, 该……了 is categorized under fixed patterns (固定格式). This frame brings together two fixed functional elements: the modal word 该 at the start of the predicate and the modal particle 了 at the end of the clause. Together, they express that a situation has reached the point where an action should happen, a natural change is due to occur, or someone's turn has arrived. The frame presents an action or change as due at a reference time, often now. It can also refer to an overdue obligation or an expected situation at a future time. Final 了 helps present the situation as newly relevant; it does not prove that the action was unnecessary earlier or must happen immediately. 十一点了，你该睡觉了。 shí yī diǎn le , nǐ gāi shuì jiào le . It is eleven o'clock; it is time for you to go to sleep. Used as a practical reminder triggered by the current time. ## Sentence Formation and Slot Fillers In the standard structure, the subject (or a time/topic expression) comes before 该. The open slot between 该 and 了 is most often filled by an action verb or a full verb-object phrase. It can also be filled by an adjective when describing a seasonal or situational change that is now due. Subject / Topic 该 Verb Phrase / Adjective 了 火车快开了，我们该出发了。 huǒ chē kuài kāi le , wǒ men gāi chū fā le . The train is about to leave; it is time for us to set off. The first clause presents departure as approaching (快……了); the second judges that it is time for the group to set off (该……了). 秋天到了，树叶该黄了。 qiū tiān dào le , shù yè gāi huáng le . Autumn has arrived; the leaves should be turning yellow now. Shows an adjective filling the slot to express a natural seasonal change that is due. A very common sub-usage of this same frame places a pronoun or person's name immediately after 该, followed by an optional verb phrase and 了. Here, the fixed frame means that it is now that person's turn in a sequence, such as speaking in a meeting, playing a game, or being called in a queue. If the action is completely clear from context, the verb can even be omitted, leaving just the person in the slot. 该 Person (Whose Turn) Verb Phrase / Adjective 了 他说完了，现在该你说了。 tā shuō wán le , xiàn zài gāi nǐ shuō le . He has finished speaking; now it is your turn to speak. Places a person right after 该 to indicate whose turn has arrived in a sequence. ## Pragmatic Force and Everyday Register In terms of register, 该……了 is highly natural in spoken and everyday interactive Chinese. Because standalone 该 is shorter and more conversational than 应该, the frame 该……了 sounds brisk, immediate, and practical. You can replace 该 with 应该 in many sentences without changing the core grammar, though 应该……了 can feel slightly more deliberate or advisory. - With a first-person subject (我 or 我们), it often serves as a polite way to wrap up a conversation or excuse oneself by pointing to the time. - With 你 or 你们, it can be a gentle reminder or a firm demand, depending on context and tone. The pronoun alone does not make the utterance polite. - With a third-person or inanimate subject, it expresses a logical expectation that a change or event is due to take place. ## Key Restrictions and Useful Contrasts Compare a general obligation with the due-time frame. 学生该认真学习 can state what students should do; 你该睡觉了 makes the current bedtime reminder explicit. Final 了 is part of the target frame, but absence of 了 does not automatically make an otherwise meaningful 该 sentence ungrammatical. 时间不早了，我该回家。 shí jiān bù zǎo le , wǒ gāi huí jiā . It is getting late; I should go home. This is a grammatical statement of what the speaker should do. In a conversational reminder that the moment to leave has arrived, adding final 了 is very natural and makes the target frame explicit, as in the next example. It is not a required repair of every sentence with 该. 时间不早了，我该回家了。 shí jiān bù zǎo le , wǒ gāi huí jiā le . It is getting late; it is time for me to go home. The fuller 该……了 frame emphasizes that it is now time to leave. Compare it with the grammatical preceding sentence stating “I should go home”. 快要……了 presents an event as approaching. 该……了 presents an action or state as due or expected at the relevant time. In the train example, the approaching departure motivates the reminder to set off. Neither wording alone verifies the real-world schedule or guarantees what will happen. For “it is not yet the right time”, say 还没到……的时候 or use a contextually appropriate 还不该……, such as 现在还不该出发. 不必 / 不用 means “there is no need”; that is not automatically the same as “the time has not arrived”. ## Frequently asked questions **Can I use 应该 instead of 该 in the 该……了 pattern?** When the meaning is 'it is time to do something' or 'something is due to happen,' you can usually say 应该……了 as well, though 该……了 is shorter and more common in brisk everyday speech. However, when the meaning is 'it is someone's turn' (such as 该你了), you must use 该 and cannot replace it with 应该. **Can the verb be left out when saying it is someone's turn?** Yes. If everyone in the conversation already knows what activity is taking place—such as playing cards, singing, or stepping up to a counter—you can simply put the person in the slot and say 该你了 (It's your turn) or 该我了 (It's my turn). **Source**[hsk.cn-bj.ufileos.com · PDF page 393](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=393) ## Continue in the app Full mock exams are available in HSKReady. [![Download on the App Store](https://hskready.app/download-on-app-store-black.svg)Download on the App Store](https://apps.apple.com/us/app/id6791916440?l=en)[![Get it on Google Play](https://hskready.app/get-it-on-google-play.svg)Get it on Google Play](https://play.google.com/store/apps/details?id=com.curiolab.hskready&hl=en) [HSKReady App](https://hskready.app/en/app)