因…故…: Formal Cause and Result in Chinese
（因）……，故……
因…故… is a compact formal cause-result pattern corresponding to 因为…所以…. 因 introduces the cause and may be omitted when context already supplies it; 故 introduces the result and must follow the cause. The pattern belongs to formal prose, and its markers should not be stacked with 因为 or 所以 in the same slots.
Published July 23, 2026
Reviewed July 23, 2026
01 / PATTERN
See the Structure
MODEL
因 + Cause, 故 + Result
Read the structure
因…故… is a compact formal cause-result pattern corresponding to 因为…所以…. 因 introduces the cause and may be omitted when context already supplies it; 故 introduces the result and must follow the cause. The pattern belongs to formal prose, and its markers should not be stacked with 因为 or 所以 in the same slots. Keep the model 因 + Cause, 故 + Result visible while you compare each sentence.
因不是体面的事情，故不敢说出来。
Because it was not respectable, he dared not speak of it.
Choose the right context
State cause and result concisely in formal prose. Use 故 to introduce a result after an explicit prior cause. Use in notices, explanations, or formal arguments.
他已适应国外生活，故不打算回国。
He has adapted to life abroad, so he does not plan to return.
Respect the boundary
Do not put 故 before the cause. Do not stack 因 with 因为 or 故 with 所以. Do not use it as a neutral conversational default.
因天气恶劣，航班取消故。
(Because the weather was severe, the flight was canceled therefore.)
Repair the pattern
故 is stranded after the result: 故 introduces the result clause and cannot trail its completed predicate. Formal and neutral cause markers are stacked: Choose one paired system: 因…故… or 因为…所以…, not both simultaneously.
因天气恶劣，故航班取消。
Use the repaired structure without changing the intended meaning.
02 / MAP
Read the Sentence
Read from left to right and notice the job performed by each part. The labels describe this example; they are not a rule that every Chinese sentence must copy.
因不是体面的事情，故不敢说出来。
Because it was not respectable, he dared not speak of it.
因
因
This part occupies the 因 position in the model pattern.
不是
Cause, 故
This part occupies the Cause, 故 position in the model pattern.
体面
Result
This part occupies the Result position in the model pattern.
的
因
This part occupies the 因 position in the model pattern.
事情
Cause, 故
This part occupies the Cause, 故 position in the model pattern.
，
Result
This part occupies the Result position in the model pattern.
故
因
This part occupies the 因 position in the model pattern.
不敢
Cause, 故
This part occupies the Cause, 故 position in the model pattern.
说
Result
This part occupies the Result position in the model pattern.
出来
因
This part occupies the 因 position in the model pattern.
03 / EXAMPLES
Examples You Can Reuse
Keep the structure stable while changing the people, objects, times, or conditions. Pinyin is shown as reading support; use the Chinese sentence and translation to confirm the grammar relationship.
因不是体面的事情，故不敢说出来。
Because it was not respectable, he dared not speak of it.
他已适应国外生活，故不打算回国。
He has adapted to life abroad, so he does not plan to return.
因天气恶劣，故航班取消。
Because of severe weather, the flight was canceled.
04 / LIMITS
When to Use It — and When Not To
Use it when
- State cause and result concisely in formal prose.
- Use 故 to introduce a result after an explicit prior cause.
- Use in notices, explanations, or formal arguments.
Do not use it when
- Do not put 故 before the cause.
- Do not stack 因 with 因为 or 故 with 所以.
- Do not use it as a neutral conversational default.
05 / REPAIR
Compare Right and Wrong
Compare the smallest meaningful change. Each explanation identifies a placement, scope, form, or clause relationship instead of treating the whole sentence as one undifferentiated mistake.
因天气恶劣，航班取消故。
因天气恶劣，故航班取消。
故 is stranded after the result
故 introduces the result clause and cannot trail its completed predicate.
因为因天气恶劣，所以故航班取消。
因天气恶劣，故航班取消。
Formal and neutral cause markers are stacked
Choose one paired system: 因…故… or 因为…所以…, not both simultaneously.
因天气恶劣，航班取消故。
故 introduces the result clause and cannot trail its completed predicate.
因为因天气恶劣，所以故航班取消。
Choose one paired system: 因…故… or 因为…所以…, not both simultaneously.
06 / PRACTICE
Practice the Grammar Point
Complete three short tasks in order: judge the pattern, repair a common error, and build the sentence. Feedback is fixed and reviewed, so these activities do not use a checker allowance.
1. Judge the sentence
2. Choose the correction
3. Build the sentence
Build a complete sentence with （因）……，故…….
07 / APPLY
Apply It in Your Sentence
Write one original sentence with （因）……，故……. Your draft moves to the checker through this browser session, selects this grammar point as the first review focus, and waits for you to submit.
08 / QUESTIONS
因…故…: Formal Cause and Result Questions
Can 因 be omitted?
Yes, if the preceding clause already states the cause; 故 can then introduce the result.
How formal is 因…故…?
It is strongly associated with written explanations, notices, and formal argument.
09 / SOURCES
Sources and Review Notes
These references support different parts of the lesson. GF0025-2021 supports level placement only; professional grammar works support the explanation, limits, examples, and cross-checks. Their inclusion does not imply endorsement.
Chinese Proficiency Grading Standards for International Chinese Language Education (GF0025-2021)
Ministry of Education and State Language Commission · Ministry of Education of the PRC · 2021
Locator: GF0025-2021 Appendix A, combined Levels 7–9 item 【七—九113】, （因）……，故…… (printed p. 249)
Supports placement in the official combined Levels 7-9 band; the exact site level remains an internal difficulty label; it does not independently establish the usage explanation.
Official sourceModern Mandarin Chinese Grammar: A Practical Guide, 3rd ed.
Ross, Ma, Chen, He and Yeh · Routledge · 2024
Locator: Chapter 44, §§44.1–44.3, cause-result order and paired connecting words
Establishes the cause-first, result-second order and the division of labor between paired cause and result markers.
Official source10 / CONTINUE
Continue with a Connected Rule
Compare
因因: Formal Cause
Compare this lesson with formal 因 introducing a cause; both belong to formal cause, purpose, time, and location frames, but they organize a different sentence role or discourse job.
Compare
……，以……以: Introducing a Formal Purpose
Compare this lesson with clause-final 以 introducing a formal purpose; both belong to formal cause, purpose, time, and location frames, but they organize a different sentence role or discourse job.
Compare
于于: Formal Time and Location
Compare this lesson with 于 introducing formal time, location, range, or comparison; both belong to formal cause, purpose, time, and location frames, but they organize a different sentence role or discourse job.
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因为…所以因为...所以 (Because... So)
Continue with the reviewed follow-up lesson to apply this pattern inside a broader, explicitly connected grammar construction.
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