Common English grammar check errors and correction methods - iWorld Learning

Common English grammar check errors and correction methods

Common English grammar check errors and correction methods

Grammar checkers are valuable tools for writers, helping to identify and correct errors in grammar, punctuation, and syntax. However, they are not foolproof and may sometimes miss or misinterpret certain errors. Understanding common grammar check errors and knowing how to correct them manually can improve the accuracy of your writing. In this article, we’ll explore some of the most common grammar check errors and provide methods for correcting them.

1. Subject-Verb Agreement Errors:

One common error flagged by grammar checkers is subject-verb agreement. This occurs when the subject and verb in a sentence do not agree in number. For example, “The dog eats” is correct, while “The dog eat” is incorrect. To correct this error, ensure that the verb agrees with the subject in number: singular subjects take singular verbs, and plural subjects take plural verbs.

2. Misplaced or Dangling Modifiers:

Grammar checkers may flag sentences with misplaced or dangling modifiers. These modifiers, such as adjectives or adverbs, should be placed near the word they modify. For example, “Running quickly, the ball was caught by the outfielder” should be corrected to “The outfielder caught the ball quickly while running.” Ensure that modifiers are positioned correctly to avoid confusion or ambiguity.

3. Run-On Sentences and Comma Splices:

Run-on sentences and comma splices occur when two independent clauses are incorrectly joined without proper punctuation. For example, “I enjoy writing, I find it relaxing” is a run-on sentence. To correct this error, use a period, semicolon, or conjunction to separate the clauses: “I enjoy writing. I find it relaxing” or “I enjoy writing; I find it relaxing.”

4. Incorrect Word Usage:

Grammar checkers may highlight words that are used incorrectly in a sentence. This includes homophones (words that sound alike but have different meanings), such as “there,” “their,” and “they’re.” To correct this error, ensure that you use the correct word in the appropriate context. Proofread your writing carefully to catch these mistakes.

5. Passive Voice:

Grammar checkers may flag sentences written in the passive voice, where the subject of the sentence receives the action rather than performing it. While passive voice is not grammatically incorrect, it can make sentences less clear and direct. To correct passive voice, rewrite the sentence in the active voice, where the subject performs the action: “The report was written by Sarah” becomes “Sarah wrote the report.”

6. Lack of Parallel Structure:

Sentences with parallel structure errors may be flagged by grammar checkers. Parallel structure ensures that items in a series or list are grammatically consistent. For example, “She likes hiking, swimming, and to run” should be corrected to “She likes hiking, swimming, and running.” Ensure that all items in the series follow the same grammatical pattern.

7. Apostrophe Misuse:

Grammar checkers may catch errors related to apostrophe misuse, such as using apostrophes to indicate plural forms (“apple’s” instead of “apples”) or omitting apostrophes in contractions (“its” instead of “it’s”). Review your writing carefully to ensure that apostrophes are used correctly according to their intended purpose.

8. Sentence Fragmentation:

Fragmented sentences, which lack a subject, verb, or complete thought, may be flagged by grammar checkers. To correct this error, ensure that each sentence contains a subject and a verb and expresses a complete idea. If necessary, combine fragmented sentences or add missing elements to create complete sentences.


While grammar checkers can be helpful tools for identifying and correcting errors in writing, they are not infallible. Understanding common grammar check errors and knowing how to correct them manually is essential for improving the accuracy and clarity of your writing. By familiarizing yourself with these errors and employing effective correction methods, you can enhance the quality of your writing and communicate more effectively with your audience.

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