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简单英语语法检查 - 主谓一致/时态提示

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Simple English Grammar Checker

Check subject-verb agreement & basic tense usage. Type a sentence and get instant, clear suggestions.

Frequently Asked Questions

Subject-verb agreement means that the verb must match its subject in number. A singular subject (e.g., he, she, the cat) usually takes a verb with an -s or -es in the present tense (e.g., He runs). Plural subjects (e.g., they, cats) use the base form (e.g., They run).

The tool scans for pronouns like he, she, or it followed by a verb. If the verb is not in its correct third-person form (e.g., He go instead of He goes), an alert is raised. It also verifies the use of doesn't vs. don't.

Yes – if the sentence contains time markers like yesterday, last week but the verbs are in the present tense, a warning is shown. The same applies when present-time words appear with past-tense verbs. It's a helpful nudge, not a full tense checker.

Absolutely. The tool looks at there is / there are and tries to match the following noun. For example, There is many books will be flagged, suggesting There are.

This is a rule‑based tool; it may miss complex structures or incorrectly flag correct sentences in context (e.g., subjunctive mood, irregular plurals). It works best for short, simple statements. Always use your own judgment!
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