条件复句 · HSK 3→4 (reinforced)

HSK 4 Pattern: 只有…才…

只有 A，才 B makes A a requirement for B. Without A, B is ruled out; having A alone does not promise B.

只有 + necessary condition, 才 + result

Examples / 例句

只有多练习，才能提高口语水平。
Zhǐyǒu duō liànxí, cái néng tígāo kǒuyǔ shuǐpíng.
Only by practicing more can you improve your speaking.
Practice is the ONLY way
只有亲自去一趟，才能了解真实情况。
Zhǐyǒu qīnzì qù yí tàng, cái néng liǎojiě zhēnshí qíngkuàng.
Only by going yourself can you understand the real situation.
No substitute for being there
只有大家一起努力，才能完成这个项目。
Zhǐyǒu dàjiā yìqǐ nǔlì, cái néng wánchéng zhège xiàngmù.
Only if everyone works together can we finish this project.
Collective effort is necessary
只有认真复习，才能在考试中取得好成绩。
Zhǐyǒu rènzhēn fùxí, cái néng zài kǎoshì zhōng qǔdé hǎo chéngjì.
Only by reviewing seriously can you get good grades on the exam.
认真 + 复习 + 取得 + 成绩 — all HSK 4. Classic study-advice frame in HSK 4 阅读
只有打好基础，将来才能学会更难的内容。
Zhǐyǒu dǎ hǎo jīchǔ, jiānglái cái néng xuéhuì gèng nán de nèiróng.
Only by laying a solid foundation can you later learn more difficult material.
将来 + 才能 = future result depends on present foundation; classic HSK 4 study advice

Choose the meaning first / 先看要表达什么

Compare: 只有天气好，我们才去爬山。Good weather is required; we may still cancel for another reason. 只要天气好，我们就去爬山。Good weather is enough for our plan. 天气本身不能决定答案，先看说话人要表达哪种条件。

Practise the pattern / 开始练习 →

Common Errors & Meaning Differences / 易错点与表达区别

△ 只有你努力，就能成功。
✓ 只有你努力，才能成功。/ 只要你努力，就能成功。
只有 pairs with 才 (not 就). If using 就, change to 只要.
△ 只有天气好，我们就去爬山。
✓ 只有天气好，我们才去爬山。／只要天气好，我们就去爬山。
Match the pair, then check the intended meaning. 只有…才 sets good weather as a requirement; 只要…就 says good weather is enough to trigger the plan. Both corrected sentences are grammatical. 不能只凭“天气好”判断用哪一组。
Easily confused: 只有…才: A is required, but may not be enough. 只要…就: A is enough in the stated situation, but need not be the only route. 必要条件不等于充分条件。 See comparison →

Fill in the Blanks / 填空练习

Fill every blank separately, using the meaning shown below the sentence. Spaces around words are ignored. Feedback lists reviewed answers; an unlisted rewrite is not automatically ungrammatical.

多读多练，能提高水平。

Only by reading and practicing...

只有亲自去看，知道是什么样子。

...can you know what it's like

大家一起努力，才能成功。

Only if everyone works together...

Use it in a new sentence / 换句子表达

练习场景的规定：进入实验室必须先戴好护目镜；戴好以后还要听老师安排。用“只有……才……”说明必要条件，不要写成戴好就一定能进入。 / Goggles are required, but entry still depends on the teacher.

把必须满足的条件放在“只有”后；它不是进入的充分保证。 / State a necessary condition, not a guarantee.

草稿只保留在当前页面，离开前请自行复制。Draft stays on this page only; copy it before leaving.

Compare one possible answer / 对照一种参考表达

只有先戴好护目镜，才可以进入实验室；戴好以后，还要听老师安排。

Other correct wording is possible. Check the intended meaning, not exact wording. / 可以有其他正确表达，重点是保留题意。

Quick Quiz / 小测验

规则：没带学生证就不能进，带了还需要预约。哪句准确表达这条必要条件？
“没带就不能进” makes the card necessary. 只有…才 preserves this restriction. 只要…就 would promise entry with the card alone and ignore the booking requirement. 有学生证还不一定能进。
规则：出示这张票就可以入场，没有其他条件。哪句准确表达“这就足够了”？
The question asks for a sufficient condition: showing the ticket is enough. 只有…才 states a requirement but does not itself promise that this is enough. 两句都能组成语法正确的句子，但承诺不同。
“只有完成作业，才能参加活动。”根据这句话，哪项一定成立？
The sentence rules out participation without completed homework. It does not say there are no other requirements. 先检查“没有 A 能不能 B”，不要把必要条件误读为保证。
All Grammar Topics Take a Mock Exam Sentence Ordering

只有…才… FAQ

When is 只有…才… tested in HSK 4?

只有…才… (Only if... can...) appears in HSK 4 reading comprehension (Q66-85) when texts use complex sentences, in 阅读排序 (Q56-65) where this pattern's connectors signal sentence order, and in listening 段落 (Q26-45) where the speaker uses it to express states a necessary condition — b can only happen if a is met.

What's the most common mistake with 只有…才…?

只有…才: A is required, but may not be enough. 只要…就: A is enough in the stated situation, but need not be the only route. 必要条件不等于充分条件。

Is 只有…才… required at HSK 4 or higher?

HSK 3→4 (reinforced)

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