X是X for Concessive Acknowledgment in Chinese
X是X
X是X repeats a predicate around 是 to acknowledge that a description or event is indeed true before adding a reservation, limitation, or contrasting consequence. The following turn may use 但, 不过, or 就是, but context can also supply the contrast. The frame is colloquial and does more than state identity.
Published August 6, 2026
Reviewed August 6, 2026
01 / PATTERN
See the Structure
MODEL
Predicate X + 是 + Same Predicate X, + Reservation
Read the structure
X是X repeats a predicate around 是 to acknowledge that a description or event is indeed true before adding a reservation, limitation, or contrasting consequence. The following turn may use 但, 不过, or 就是, but context can also supply the contrast. The frame is colloquial and does more than state identity. Keep the model Predicate X + 是 + Same Predicate X, + Reservation visible while you compare each sentence.
去是去了，就是不知道结果怎么样。
I did go, but I do not know how it turned out.
Choose the right context
Acknowledge a positive quality before giving a reservation. Confirm that an action occurred before qualifying its result. Signal agreement with one point while preserving a contrasting stance.
好是好，但不知道老师会不会同意。
It is good, but I do not know whether the teacher will agree.
Respect the boundary
Do not use different predicates in the two X slots. Do not insert aspect between 是 and the repeated predicate. Do not read the frame as an ordinary identity sentence.
这件衣服漂亮是，但太贵了。
(This garment beautiful is, but too expensive.)
Repair the pattern
The second copy is missing: The concession frame repeats the same predicate after 是 before adding the reservation. Aspect splits 是 and the second copy: The repeated verb follows 是 directly; event-final 了 comes after the second copy 去了.
这件衣服漂亮是漂亮，但太贵了。
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.
去是去了，就是不知道结果怎么样。
I did go, but I do not know how it turned out.
去
Predicate X
This part occupies the Predicate X position in the model pattern.
是
是
This part occupies the 是 position in the model pattern.
去了
Same Predicate X,
This part occupies the Same Predicate X, position in the model pattern.
，
Reservation
This part occupies the Reservation position in the model pattern.
就是
Predicate X
This part occupies the Predicate X position in the model pattern.
不知道
是
This part occupies the 是 position in the model pattern.
结果
Same Predicate X,
This part occupies the Same Predicate X, position in the model pattern.
怎么
Reservation
This part occupies the Reservation position in the model pattern.
样
Predicate X
This part occupies the Predicate X 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.
去是去了，就是不知道结果怎么样。
I did go, but I do not know how it turned out.
好是好，但不知道老师会不会同意。
It is good, but I do not know whether the teacher will agree.
这件衣服漂亮是漂亮，但也太贵了。
This garment is indeed beautiful, but it is too expensive.
04 / LIMITS
When to Use It — and When Not To
Use it when
- Acknowledge a positive quality before giving a reservation.
- Confirm that an action occurred before qualifying its result.
- Signal agreement with one point while preserving a contrasting stance.
Do not use it when
- Do not use different predicates in the two X slots.
- Do not insert aspect between 是 and the repeated predicate.
- Do not read the frame as an ordinary identity sentence.
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.
这件衣服漂亮是，但太贵了。
这件衣服漂亮是漂亮，但太贵了。
The second copy is missing
The concession frame repeats the same predicate after 是 before adding the reservation.
去是了去，就是不知道结果。
去是去了，就是不知道结果。
Aspect splits 是 and the second copy
The repeated verb follows 是 directly; event-final 了 comes after the second copy 去了.
这件衣服漂亮是，但太贵了。
The concession frame repeats the same predicate after 是 before adding the reservation.
去是了去，就是不知道结果。
The repeated verb follows 是 directly; event-final 了 comes after the second copy 去了.
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 X是X.
07 / APPLY
Apply It in Your Sentence
Write one original sentence with X是X. 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
X是X for Concessive Acknowledgment Questions
Does X是X mean that two things are identical?
No. In this construction the repetition acknowledges a predicate as true and prepares a reservation or contrast.
Must 但 always follow?
No. 但, 不过, and 就是 are common, but a contrasting continuation can also be inferred from discourse.
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: Appendix A, Level 6 item 【六58】, PDF p. 241 (printed p. 235)
Places the oral X是X acknowledgment pattern at Level 6 with event, adjective, and evaluative examples.
Official source现代汉语构式数据库
北京大学中国语言学研究中心 · Peking University · 2021
Locator: Construction detail 225, A是A, lines 10-111
Analyzes exact predicate repetition as acknowledging a property while forecasting a following concession or contrast in spoken usage.
Official source10 / CONTINUE
Continue with a Connected Rule
Easy to confuse
虽然…但是虽然...但是 (Although... But)
Both acknowledge a fact before contrast, while X是X uses exact predicate repetition.
Compare
固然……，也……固然…也… for Conceding a Fact Without Reversing Course
Formal 固然 acknowledgment differs from the colloquial repeated-predicate concession frame.
Easy to confuse
倒是倒是 for Contrast and Reassessment
Both may soften a reservation, but 倒是 marks expectation stance without copying a predicate.
Continue learning
固然…但是固然...但是: Granted, Yet
Continue to an explicit formal acknowledgment followed by an adversative second clause.
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Easy to confuse
Both acknowledge a fact before contrast, while X是X uses exact predicate repetition.