AI Chinese Grammar Checker
Fix Chinese sentences and practice grammar points with plain-English AI feedback.
Free daily checks. No account needed to start.
Practice 地点
Write your own sentence. We'll check 地点 first, then flag any obvious mistakes.
Learn 地点 firstTRY A SAMPLE
Paste a Chinese sentence to check Chinese grammar, see a corrected version, and understand which grammar point caused the issue.
How the AI Chinese Grammar Checker works
Paste
Write one Chinese sentence. Short, focused sentences get the clearest feedback.
Check
The checker looks for Chinese-specific grammar issues, then verifies the correction before showing it.
Learn
You get a corrected sentence, a plain-English reason, and links to matching Chinese grammar points.
What it catches
The checker focuses on errors that matter to Chinese learners: missing or extra particles, measure words, word order, time expressions, comparison patterns, and 把 sentence results. It can work as a chinese grammar corrector for a general sentence, but it is strongest when your sentence has a clear grammar pattern.
把
The 把 (bǎ) Sentence
A 把 sentence promises a result, so the verb can't stand alone. Say what happened to the object: 放在桌子上, 放好, or 放进去.
比
The 比 (bǐ) Comparison
The 比 pattern already means "more", so 很 and 非常 clash with it. To intensify, put the amount after the adjective instead: 他比我高得多.
了
了 (le): Completed Actions
了 says the action is complete, but 明天 says the trip has not happened yet. The two signals clash, so a simple future plan drops 了 entirely.
个
Chinese Measure Words
个 is only the fallback. When a noun has its own measure word, native ears and exam graders expect it — 电脑 is a machine, so it takes 台.
是
The 是...的 Construction
Once 是 opens the frame, the sentence must close with 的, not 了. 是…的 already marks the event as completed and known, so learners who swap in 了 out of habit break the pattern.
过
The Particle 过 (guò)
过 attaches directly to the verb, so it sits between the verb and the object: 去过中国. Placing it after the whole object phrase is ungrammatical.
着
The Particle 着 (zhe)
着 attaches after the verb it modifies, marking the resulting state: 开着 (stays open). Putting 着 before the verb is ungrammatical.
在
在 / 正在: Ongoing Actions
在 is a pre-verb marker for the progressive, so it stands before the verb: 在吃饭. Placing it after the verb phrase is ungrammatical.
有
The 有 (yǒu) Sentence
有 is the one common verb that never takes 不. Its negation is fixed as 没(有), so "don't have" is always 没有.
时间
Time Word Placement
English lets "yesterday" sit at the end, but Chinese fixes time-when before the verb. The slot is after the subject and before the action: 我昨天买书.
地点
Place Word Placement
Chinese states where before the action: 在 + place + verb. The English "study at school" order — verb then place — does not carry over.
放着
Existential Sentences
The existential pattern leads with the place, then verb + 着, then the thing: 桌子上放着一本书. Starting with the indefinite thing copies English and is ungrammatical here.
不/没
不 (bù) vs 没 (méi): Negation
Likes, preferences, and states are negated with 不, never 没. 没 only negates a completed action, and 喜欢 is a state, not an event that finishes.
吗
吗 and A-not-A Questions
The A-not-A form (是不是) already asks a yes/no question, so 吗 is redundant. Use one form or the other, never both.
呢
The Particle 呢 (ne)
呢 doesn't ask yes/no questions. To ask "are you a student?", use 吗. 呢 bounces a question back or asks "where is...?", but it can't turn a statement into a yes/no question.
一…就
The 一...就... Structure
The pattern needs both halves: 一 before the first action and 就 before the second. Without 就, the second clause has no marker and the "as soon as" link breaks.
得
The 得 (de) Complement
To describe how an action is performed, the verb needs 得 before the complement: 跑得很快. Without 得, the verb and the description aren't linked.
的/得/地
的 vs 得 vs 地 (the three de)
A complement after a verb takes 得, not 的. 的 links to nouns; here 很快 describes how 跑 is done, so 得 is required.
因为…所以
因为...所以 (Because... So)
因为 marks the cause and 所以 the result. Swapping them reverses the logic — the rain is the cause, so it takes 因为, and the not-going is the result, so it takes 所以.
虽然…但是
虽然...但是 (Although... But)
虽然 opens the conceded fact and 但是 opens the contrast — the second clause. 但是 can't sit inside the first clause with 虽然.
An example correction
Here is the kind of feedback the checker gives. The sentence below counts books with the fallback measure word 个, but 书 has its own measure word — a mistake that most generic tools let through.
我有三个书。
我有三本书。
Why a Chinese-specific checker helps
A generic grammar checker often starts from spelling, punctuation, or English-like sentence order. Chinese grammar needs different signals. A sentence can look short and simple but still depend on whether 了 marks a completed action, whether a number needs the right measure word, or whether a 把 sentence has a real result after the verb.
ChineseGrammar.app connects corrections back to the grammar rules on this site. That means you can check chinese grammar in one sentence, then open the linked rule page to study the pattern with examples and practice prompts.
Accuracy and limits
The checker is strongest when your sentence focuses on a clear Chinese grammar pattern. For advanced, literary, highly idiomatic, or context-heavy sentences, it may give conservative feedback rather than force a correction. Use it as a Chinese sentence checker for practice, not as a final authority for legal, medical, or professional translation.
You get 10 free checks per day without an account, and 30 per day after unlocking with your email — enough for a daily writing habit of a few focused sentences.
AI Chinese Grammar Checker FAQ
Is the AI Chinese Grammar Checker free?
Yes. You get 10 free checks per day without signing up. You can unlock 30 daily checks with email.
Can it check pinyin?
The checker is designed for Chinese sentences, not standalone pinyin. You can include pinyin in notes for yourself, but the sentence field should contain Chinese characters.
Does it work for traditional characters?
It can read many traditional-character sentences, but the rule pages and examples currently use simplified Chinese. When a grammar point is linked, the explanation follows the simplified examples on this site.
Can I practice one grammar point at a time?
Yes. Open the checker from a grammar point page and it will check that grammar point first, then flag obvious unrelated mistakes when useful.
What happens when the checker is not sure?
It is designed to be conservative. For advanced, literary, or highly idiomatic sentences, it may give limited feedback instead of forcing a confident correction.