# 不知…是好/才好: Chinese Expressions of Indecision | HSKReady Canonical: https://hskready.app/en/grammar/hsk-7-9-fixed-patterns-g073 Language: en Content ID: web-grammar-hsk-7-9-g073 HSK levels: 7-9 Updated: 2026-10-23T04:57:33.779Z Scope: published website educational content; full vocabulary, question bank and mock exams remain in the app. Learn how 不知X是/才好 frames uncertainty about the best choice, how to form it, and how it differs from a neutral question. Grammar [HSK 7-9 · Fixed patterns](https://hskready.app/en/grammar/hsk-7-9#hsk-7-9-g073) # 不知…是好/才好: not knowing what to do This advanced fixed pattern presents a speaker as unsure which action, option, or response would be best. Learn how its frame works, when it sounds natural, and how it differs from simply asking for information. 不知 Unresolved how/what/which decision X 是好／才好 Example sentence 事情突然有了变化，我不知如何是好。 Shìqing tūrán yǒu le biànhuà, wǒ bù zhī rúhé shì hǎo. Things suddenly changed, and I did not know what to do. 如何 supplies the unresolved action or response, and 是好 is the ending. The 是 is not introducing an 是…还是… choice here. **Read the full explanation and examples** ## Meaning and pragmatic force 不知X是/才好 expresses uncertainty about what one should choose, say, or do. The speaker is not merely missing a fact: they are weighing possibilities and cannot readily decide which would be suitable or best. Depending on the context, the pattern can sound reflective, hesitant, or mildly troubled. It does not by itself prove that the situation is serious; surrounding details and tone determine how strong the concern feels. The construction normally states that someone cannot decide on a suitable action or response. It may invite advice, but an embedded choice is not automatically a rhetorical question. It can also occur in a positive emotional context: 听到这个好消息，她高兴得不知说什么才好 describes being so delighted that she cannot find the right words. ## Build the fixed frame Read the outline’s 是/才好 as two endings sharing 好: 不知X是好 or 不知X才好. Compare 不知如何是好 and 不知怎么办才好. X usually contains the unresolved how, what, which, or whether decision. A plain action with no unresolved choice is not enough. An 是…还是… choice can occur inside X, but that 是 is a separate grammatical role, not the suffix 是好. 不知 Unresolved how/what/which decision X 是好／才好 - X may be a question clause that names an unknown choice, such as which route to take or which problem to address first. - X may contain an explicit choice, as in the examples with explaining in person or writing first. Those examples still use 才好 as their ending. - A modal such as 该 can appear inside the question clause when the speaker is considering what ought to be done. It is not a required part of the fixed frame. ## Examples in context 事情突然有了变化，我不知如何是好。 Shìqing tūrán yǒu le biànhuà, wǒ bù zhī rúhé shì hǎo. Things suddenly changed, and I did not know what to do. 如何 supplies the unresolved action or response, and 是好 is the ending. The 是 is not introducing an 是…还是… choice here. 不知是当面解释，还是先写一封信才好。 Bù zhī shì dāngmiàn jiěshì, háishi xiān xiě yì fēng xìn cái hǎo. I don’t know whether it would be better to explain in person or write a letter first. 是……还是…… presents contrasting possible responses. 不知是现在答应，还是等拿到完整资料以后再决定才好。 Bù zhī shì xiànzài dāying, háishi děng ná dào wánzhěng zīliào yǐhòu zài juédìng cái hǎo. I don’t know whether I should agree now or wait until I have the complete information and decide then. The options include a longer second action; the speaker is weighing timing as well as choice. 面对这种情况，我们不知该先解决哪一个问题才好。 Miànduì zhè zhǒng qíngkuàng, wǒmen bù zhī gāi xiān jiějué nǎ yí ge wèntí cái hǎo. In this situation, we don’t know which problem we should tackle first. 该 places the question within what the speakers think ought to be done. The first example demonstrates 是好 after 如何. The other three finish with 才好. In the two alternatives examples, the initial 是 belongs to 是…还是…, while the final 才好 evaluates the unresolved choice. In the final example, 该 helps express what should be prioritized. ## When to use it and what to contrast This can appear in conversation or narrative when someone is uncertain how to act or respond. 不知 is more compact and often more literary than 不知道, but 不知道选哪个才好 is natural in an everyday choice. The advanced outline level is not a rule that the whole pattern belongs only in formal situations. Compare 我不知道车几点开 with 我不知明天几点出发才好. The first lacks a fact about the departure time; the second concerns choosing a suitable time to leave tomorrow. 才好 or 是好 contributes the search for an appropriate response. The sentence may be followed by a direct request for advice. - First ask whether the sentence is about deciding what to do, say, or choose. If it is only about an unknown fact, this pattern may not fit the intended meaning. - Put the unresolved choice or question in X. Use 是……还是…… when presenting explicit alternatives. - Use 是好 or 才好 to close the unresolved-choice expression, and check that the context supports a search for an appropriate action or response. ## Frequently asked questions **What does 是/才好 mean in the outline notation?** It abbreviates two endings: 是好 and 才好. 不知如何是好 uses the first; 不知选哪条路线才好 uses the second. Do not insert an arbitrary action between 是 and 才好. An 是…还是… choice inside the sentence is a different role for 是. **Can X contain more than two options?** The frame concerns an unresolved choice, and the alternatives construction can present options for comparison. Keep the choices clear; the outline does not specify a fixed maximum. **Does 才好 always translate as “would be best”?** No single English translation fits every context. It signals that the speaker is considering what would be suitable or preferable, so translations such as “what should I do?” or “which would be better?” may sound more natural. **Source**[hsk.cn-bj.ufileos.com · PDF page 405](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=405) ## 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)