# HSK 4 Grammar: 要是……（就）……，否则…… | HSKReady Canonical: https://hskready.app/en/grammar/hsk-4-hypothetical-clauses-g083 Language: en Content ID: web-grammar-hsk-4-g083 HSK levels: 4 Updated: 2026-10-23T04:56:37.688Z Scope: published website educational content; full vocabulary, question bank and mock exams remain in the app. Learn how to state a hypothetical condition, its likely result, and the alternative consequence with 要是……（就）……，否则……. Grammar [HSK 4 · Sentence types › Complex sentences › Hypothetical clauses](https://hskready.app/en/grammar/hsk-4#hsk-4-g083) # Using 要是……（就）……，否则…… to State a Condition and Its Alternative This HSK 4 pattern links a possible condition to an expected result, then uses 否则 to warn what may happen if the condition or recommended action is not met. Learn its form, when 就 may be omitted, and how it differs from the shorter pattern ending in 否则. 要是 condition ，（主语）（就） Expected response or predicate ，否则 alternative consequence Example sentence 要是你今晚有时间，就把报告的最后一部分改完，否则明天交上去会很赶。 Yàoshi nǐ jīnwǎn yǒu shíjiān, jiù bǎ bàogào de zuìhòu yí bùfen gǎi wán, fǒuzé míngtiān jiāo shàngqu huì hěn gǎn. If you have time tonight, finish revising the last part of the report; otherwise, submitting it tomorrow will be a rush. Correct. The alternative consequence is the time pressure if the report is not finished tonight. **Read the full explanation and examples** ## Meaning and shape 要是 means “if” or “suppose that.” It introduces a possible condition; it does not say that the condition is already true. The following clause gives the result expected if that condition holds. 就 often marks this result and makes the condition–result link easy to follow, but the outline allows it to be omitted. 否则 means “otherwise” or “if not.” It introduces a consequence associated with the condition or action not being fulfilled. The complete pattern therefore moves from possibility, to expected result, to an alternative consequence. 要是 condition ，（主语）（就） Expected response or predicate ，否则 alternative consequence - 要是 + condition: name a possible situation or circumstance. - (就) + result: state what is expected or appropriate if the condition holds. 就 is optional here. - 否则 + alternative: state what may happen if the relevant condition or action is not met. ## When to use it Use the full pattern when you want to explain both what follows if a condition is met and what may happen otherwise. It is useful for plans, reminders, advice, and practical warnings. The clause after 否则 is often negative or undesirable, but it need not be a dramatic threat: it can simply identify the other likely outcome. Read its connection from context. Sometimes it refers to not meeting the 要是 condition; in advice, it may refer more directly to not carrying out the suggested action. The construction presents a practical consequence, not a promise that the result is certain. 要是你今晚有时间，就把报告的最后一部分改完，否则明天交上去会很赶。 Yàoshi nǐ jīnwǎn yǒu shíjiān, jiù bǎ bàogào de zuìhòu yí bùfen gǎi wán, fǒuzé míngtiān jiāo shàngqu huì hěn gǎn. If you have time tonight, finish revising the last part of the report; otherwise, submitting it tomorrow will be a rush. Correct. The alternative consequence is the time pressure if the report is not finished tonight. 要是我们现在出发，就能赶上七点的公交车，否则只能等下一班。 Yàoshi wǒmen xiànzài chūfā, jiù néng gǎnshàng qī diǎn de gōngjiāochē, fǒuzé zhǐ néng děng xià yì bān. If we leave now, we can catch the seven o’clock bus; otherwise, we can only wait for the next one. Here 否则 supplies the alternative if we do not leave now or in time, as specified by context. 要是下午下雨，把活动改到室内，否则大家会淋湿。 Yàoshi xiàwǔ xiàyǔ, bǎ huódòng gǎi dào shìnèi, fǒuzé dàjiā huì línshī. If it rains this afternoon, move the activity indoors; otherwise, everyone will get wet. Correct. This is advice followed by the consequence of not following it. 就 is omitted, which is permitted in this pattern. 要是文件还没有备份，就先别关电脑，否则刚才的修改可能会丢失。 Yàoshi wénjiàn hái méiyǒu bèifèn, jiù xiān bié guān diànnǎo, fǒuzé gāngcái de xiūgǎi kěnéng huì diūshī. If the file has not been backed up yet, do not shut down the computer; otherwise, the changes we just made may be lost. Correct. 否则 refers to the consequence of shutting down before the file is backed up. ## Forming natural sentences The condition and result can be statements about a situation, as in having time or leaving now. They can also give advice or instructions, as in changing an event’s location or waiting before shutting down a computer. In that use, 否则 commonly points to the consequence of ignoring the advice. Make the intended link clear: if the alternative consequence seems to refer to the wrong clause, name the action or condition more explicitly. - Keep the condition after 要是 and before the expected result. - Use 就 before the result when it helps the sentence flow; do not treat it as mandatory in this outline point. - Put 否则 before the alternative consequence. That consequence should make sense as the outcome if the relevant condition or action is not fulfilled. - Use a complete clause after 否则 when the alternative needs explanation; a shorter phrase such as 等下一班 is natural when context makes the omitted details clear. ## Contrast with related patterns 要是……，（就）…… expresses a condition and its result without explicitly adding an “otherwise” consequence. The pattern in this lesson includes that relationship and adds a second branch with 否则. 否则 can also appear after a separate statement or instruction without 要是; that shorter form belongs to a neighboring outline point. This lesson focuses on the combined pattern listed here, rather than treating all conditional constructions as interchangeable. Use this quick check while composing: identify the possible condition, state the result if it holds, then ask whether you also need to explain what follows otherwise. If not, a sentence with 要是……（就）…… may be enough. If yes, add a consequence after 否则 that fits the situation. ## A practical way to check your sentence Check what 否则 refers to: failure of the first condition, or failure to follow the middle advice? In the rain example it means not moving indoors if it rains, not that a dry afternoon makes everyone wet. The conditional framing does not itself assert whether the condition is true. Keep the intended reasoning clear instead of negating the nearest clause mechanically. ## Frequently asked questions **Can I leave out 就?** Yes. 就 is optional in the outline’s pattern. Including it often makes the result clause more explicit, while omitting it can still produce a natural sentence. **Does 否则 always mean “if the 要是 condition is false”?** Not necessarily. In a straightforward conditional statement it often gives the outcome if the condition is not met. In advice or instructions, it may instead point to what happens if the recommended action is not carried out. Make that link clear from context. **Can I use the pattern in a question?** Yes. For example, 要是你想参加，就今天报名，否则我们怎么安排座位呢？ gives a condition and an instruction, then asks rhetorically how seats could otherwise be arranged. The question must preserve a clear reference for 否则. **Source**[hsk.cn-bj.ufileos.com · PDF page 397](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=397) ## 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)