Independent Action Pattern 自A自B in Chinese
自A自B
自A自B forms compact parallel expressions in which each 自 introduces one coordinated action or state, often conveying independent, self-directed, or mutually separate conduct. Established examples include 自说自话 and 自作自受. Both 自 slots and their following elements must remain balanced; aspect cannot interrupt the four-part frame.
Published July 23, 2026
Reviewed July 23, 2026
01 / PATTERN
See the Structure
MODEL
自 + A + 自 + B
Read the structure
自A自B forms compact parallel expressions in which each 自 introduces one coordinated action or state, often conveying independent, self-directed, or mutually separate conduct. Established examples include 自说自话 and 自作自受. Both 自 slots and their following elements must remain balanced; aspect cannot interrupt the four-part frame. Keep the model 自 + A + 自 + B visible while you compare each sentence.
他坐在角落里自说自话。
He sat in the corner talking to himself.
Choose the right context
Use established 自A自B expressions for self-directed conduct. Choose attested balanced combinations rather than inventing mismatched slots. Keep A and B grammatically parallel. Preserve both 自 markers in the four-part frame.
这是他自作自受。
He brought this upon himself.
Respect the boundary
Do not omit the second 自. Do not insert aspect inside the frame. Do not place an object between 自 and its A or B slot.
他坐在角落里自说了自话。
(He sat in the corner talking to himself.)
Repair the pattern
Aspect marker splits the parallel frame: 自说自话 is an intact four-part expression and cannot contain aspect 了. Second self marker omitted: The fixed parallel expression requires the second 自 before B: 自作自受.
他坐在角落里自说自话。
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.
他坐在角落里自说自话。
He sat in the corner talking to himself.
他
自
This part occupies the 自 position in the model pattern.
坐在
A
This part occupies the A position in the model pattern.
角落里
自
This part occupies the 自 position in the model pattern.
自说自话
B
This part occupies the B 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.
他坐在角落里自说自话。
He sat in the corner talking to himself.
这是他自作自受。
He brought this upon himself.
两队人马自顾自地前进。
The two groups proceeded independently, each minding its own affairs.
04 / LIMITS
When to Use It — and When Not To
Use it when
- Use established 自A自B expressions for self-directed conduct. Choose attested balanced combinations rather than inventing mismatched slots.
- Keep A and B grammatically parallel.
- Preserve both 自 markers in the four-part frame.
Do not use it when
- Do not omit the second 自.
- Do not insert aspect inside the frame.
- Do not place an object between 自 and its A or B slot.
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.
他坐在角落里自说了自话。
他坐在角落里自说自话。
Aspect marker splits the parallel frame
自说自话 is an intact four-part expression and cannot contain aspect 了.
这是他自作受。
这是他自作自受。
Second self marker omitted
The fixed parallel expression requires the second 自 before B: 自作自受.
他坐在角落里自说了自话。
自说自话 is an intact four-part expression and cannot contain aspect 了.
这是他自作受。
The fixed parallel expression requires the second 自 before B: 自作自受.
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 自A自B.
07 / APPLY
Apply It in Your Sentence
Write one original sentence with 自A自B. 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
Independent Action Pattern 自A自B Questions
Is every 自A自B combination productive?
No. Many common examples are established expressions and should be learned as units.
Must A and B be identical?
No. They must be parallel, but established forms may use related actions such as 作 and 受.
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, official combined Levels 7-9 item 【七—九067】 (PDF pp. 249-250)
Provides official combined Levels 7-9 directory placement and examples only; it does not establish the learner-facing usage explanation.
Official sourceModern Mandarin Chinese Grammar: A Practical Guide, 3rd ed.
Ross, Ma, Chen, He and Yeh · Routledge · 2024
Locator: Chapter 16, Coordination
Supports balanced parallel verbal material; GF supplies the exact 自A自B construction and inventory.
Official source10 / CONTINUE
Continue with a Connected Rule
Easy to confuse
无A无BExhaustive Absence with 无A无B
自A自B expresses self-directed or independent action; 无A无B expresses the absence of both qualities.
Compare
左A右BAlternating Direction Pattern 左A右B
Compare self-directed 自A自B with multidirectional 左A右B despite their similar balanced four-character shape.
Continue learning
又……又……又...又...: Both...and...
Compare the parallel slots of 自A自B with 又A又B coordinating two properties or actions.
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Easy to confuse
自A自B expresses self-directed or independent action; 无A无B expresses the absence of both qualities.