20 errors
1. Missing comma after an introductory element
2. Vague pronoun reference
3. Missing comma in a compound sentence
4. Wrong word
5. Missing comma(s) with a nonrestrictive element
6. Wrong or missing verb ending
7. Wrong or missing preposition
8. Comma splice
9. Missing or misplaced possessive apostrophe
10. Unnecessary shift in tense
11. Unnecessary shift in pronoun
12. Sentence fragment
13. Wrong tense or verb form
14. Lack of subject-verb agreement
15. Missing comma in a series
16. Lack of agreement between pronoun and antecedent
17. Unnecessary comma(s) with a restrictive element
18. Fused sentence
19. Misplaced or dangling modifier
20. Its/It's confusion



EasyWriter Resources / 20 Most Common Errors /
14. Lack of subject-verb agreement




The subject is the singular noun strategist, not scenes.




The subject is the singular pronoun each, not designs.




The subject, reasons, is plural, so the verb is plural.




Here, the noun closest to the verb is singular (sister). The verb must agree with that singular noun.




Here, who refers to athletes, so the verb is plural.

A verb must agree with its subject in number and in person. In many cases, the verb must take a form depending on whether the subject is singular or plural: The old man is angry and stamps into the house, but The old men are angry and stamp into the house. Lack of subject-verb agreement is often just a matter of carelessly leaving the -s ending off the verb or of not identifying the subject correctly.

For practice recognizing and editing this error, go to Exercise Central.


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