Most Common Mistakes in English Grammar - Online Course

Most Common Mistakes in English Grammar - Online Course

Most Common Mistakes in English Grammar

Updated on Sep, 2026

Teaching and Academics , Language Learning, English Grammar

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Whether we are writing an email or creating a resume, we should ensure that our writing is correct by avoiding grammar mistakes. If we spend some time to edit our words before sending them out, we may find some grammatical errors.

Most Common mistakes in English Grammar in connection with the following :

1.Use of incorrect spellings of a word

2.Mistake in using Apostrophe

3.Sentence fragments

4.Lack of Subject-Verb agreement

5.Misplaced modifiers/words

7.Incomplete comparisons

8.Mixing up Possession vs. Plural

9.Confusion between Fewer and Less

13. Use correct verb for the entire correspondence

14. Unnecessary commas

15. No clear Antecedent

16. Ending a Sentence in a Preposition

17. Very long sentences

18. Mistakes with Well and Good

19. Peek vs. Peak vs. Pique

22. Who vs. Whom vs. Whose vs. Who’s

26. Introductory commas

28. Possessive nouns

29. Missing comma in a Compound Sentence

30. Mixing up spellings

i) To vs. too vs. two

ii) Whether vs. Weather

iii) There vs. Their

31. Mixing up similar words

i) Affect vs. effect

ii) Further vs. father

iii) Accept vs. except

32. Assure vs. Insure vs. Ensure

34. Commas for a series

35. Compliment s. Complement

36. Between vs. among

37. Semicolon vs. Colon

38. Capitalization errors

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