HSK 2
数词和多表示概数Approximate Numbers with 多
Write one short sentence that follows: Round Number + 多 + Classifier + Noun; Number + Classifier/Unit + 多
ONE SENTENCE AT A TIME
Chinese Grammar Checker
Correct a Chinese sentence, read the plain-English reason, and open the exact grammar lesson behind the change.
Check Your Chinese Sentence
Practice 不是……，就是……
Write one sentence using 不是……，就是……. The analysis will review this grammar point first.
Review the lesson10 free checks a day — no sign-up
TRY A SAMPLE
Submit one focused Chinese sentence. The result can include a correction, explanation, natural rewrite, word-by-word notes, and links to reviewed grammar rules; available fields depend on the sentence.
01 / PRACTICE
Fix 5 Sentences
Repair five common learner errors without using a daily check. Each fixed question gives an immediate rule-based explanation and a direct lesson link.
FIX THE SENTENCE1/5
02 / COVERAGE
What Can It Check?
Open a category to compare one error with a focused correction. These examples describe current sentence-level use cases; they do not promise paragraph editing, pronunciation scoring, or official exam marking.
Chinese word order
我去北京明天。
我明天去北京。
Time words normally frame the event before the verb phrase. The checker can identify this placement problem and connect it to the word-order lesson.
Open the grammar lessonMeasure words
我买了三个书。
我买了三本书。
Many counted nouns need a conventional measure word. For bound books, 本 replaces the general 个.
Open the grammar lessonAspect particles
我去过了北京三次。
我去过北京三次。
了／过／着 describe different views of an event. Here 过 already marks experience, so the extra 了 is not needed for this meaning.
Open the grammar lesson把 sentences
我把门关。
我把门关上了。
把 foregrounds what happens to an object. A result such as 关上 makes that effect complete.
Open the grammar lessonTime expressions
我学习中文两年了昨天。
到昨天，我学习中文两年了。
Time expressions need a clear scope. Moving 到昨天 to the front makes the reference point unambiguous.
Open the grammar lessonPrepositions
我对他借了一本书。
我向他借了一本书。
向 identifies the person from whom something is borrowed. 对 marks a target or attitude and does not express this source relation.
Open the grammar lessonMissing or extra words
因为下雨，我们没出门。
因为下雨，所以我们没出门。
The result clause can be understood without 所以 in conversation, but adding it makes the paired causal structure explicit for practice.
Open the grammar lessonCollocations and naturalness
我做了一个决定去。
我决定去。
The shorter verb 决定 directly takes the action clause. The rewrite keeps the meaning while avoiding an awkward noun phrase.
Open the grammar lesson03 / NEW
Practice New Grammar Lessons
Use a recently published lesson as today's writing prompt. The selected rule becomes the checker's first review focus; it does not change the sentence or submit anything automatically.
Practice This Rule
HSK 3
概数表示法2Approximate Numbers with Adverbs, Adjacent Numerals, and Postpositions
Write one short sentence that follows: 大概/大约/几 + Number; Adjacent Numerals; Quantity + 左右/前后
HSK 5
不管怎样说不管怎样说 Discourse-Level Anyway
Write one short sentence that follows: 不管怎样说，Conclusion
HSK 3
不是……，就是……不是……就是…… Limited Choice
Write one short sentence that follows: 不是 + Option A，就是 + Option B
HSK 3
不是……吗？/难道……吗？不是……吗／难道……吗 Rhetorical Emphasis
Write one short sentence that follows: 不是 + Proposition + 吗？; 难道 + Proposition + 吗？
HSK 2
因果复句Causal Sentence Groups
Write one short sentence that follows: Cause Clause，(因为……所以……) + Result Clause
04 / READ
Result Guide
A result separates the smallest grammatical repair from optional learning information. Select a label in the sample to see what that field is for before spending a daily check.
SAMPLE RESULT
我有三个书。
我有三本书。
Correction
The correction repairs the stated grammar problem while keeping the original meaning as closely as possible.
05 / METHOD
Behind the Check
Correction
Repairs the identified sentence-level problem while trying to preserve the intended meaning.
Why
Names the relevant Chinese grammar pattern and explains the placement, form, or clause relationship.
Natural rewrite
Offers a fluent alternative when one is useful, kept separate from the minimum correction.
Grammar lesson
Links the result to reviewed examples, limits, practice, and professional references.
Accuracy and Limits
Short, explicit sentences usually provide clearer evidence than literary, idiomatic, or context-heavy text. The system may still miss a problem or suggest a change you do not intend, so compare the correction with its explanation and linked rule before adopting it.
Privacy
A submitted sentence and its analysis result may be retained for up to approximately 31 days for troubleshooting and improvement. They are not published or sold. Read the Privacy Policy for the full retention details.
06 / REFERENCES
Grammar Sources Behind the Explanations
The site's fixed lessons are checked against professional grammar references. The checker does not query these books in real time, and their authors, publishers, and institutions do not endorse this product.
Chinese Proficiency Grading Standards for International Chinese Language Education (GF0025-2021)
Level and directory evidence only, not a substitute for grammar explanation.
Official sourceA Reference Grammar of Chinese
Corpus-informed grammar facts, construction limits, and register distinctions.
Official sourceModern Mandarin Chinese Grammar: A Practical Guide, 3rd ed.
Learner-facing function, placement, and usage explanations.
Official sourceChinese: A Comprehensive Grammar, 2nd ed.
Independent cross-checks for sentence patterns, clause links, and exceptions.
Official source07 / FAQ
Chinese Grammar Checker FAQ
Is the Chinese grammar checker free?
Yes. You can run 10 free checks per day without an account and 30 after signing in. The live result shows the remaining allowance returned by the same quota system.
What Chinese text can I check?
Check one Chinese sentence at a time, up to 200 characters. The current tool is for focused sentences, not paragraphs or documents.
Can it check pinyin?
No. The input needs Chinese characters and does not treat standalone pinyin as a complete Chinese sentence. Lesson pages provide pinyin for reviewed examples.
Does it support traditional Chinese?
The checker can read many sentences written with traditional characters, but coverage is not guaranteed. Linked lessons and reviewed examples currently use simplified Chinese.
How accurate is the Chinese grammar checker?
Accuracy varies with context, register, and sentence complexity. Review the explanation and linked professional sources instead of treating any correction as an unquestionable authority.
How long are my sentences stored?
A submitted sentence and its analysis result may be retained for up to approximately 31 days for troubleshooting and improvement. User submissions are not published or sold; see the Privacy Policy for details.
Can I practice one grammar point at a time?
Yes. Open the checker from a grammar lesson to set that rule as the first review focus. The checker can still flag an obvious unrelated issue when it helps explain the sentence.
Check a Sentence
Apply one rule in your own sentence, check the result, and continue with the linked lesson.