Comma or No Comma?

Writers often include unnecessary commas, which can slow down readers’ understanding and increase the time it takes to comprehend the meaning of a sentence. Writers typically insert a comma when none is needed when they do the following:

  • base the need for a comma on speech pauses
  • add a comma because the sentence feels long
  • place a comma incorrectly before a phrase that is not an independent clause.

Your Task: Locate the misused comma and correct the sentences below. Then write the reason the comma does not belong where it was placed.

  1. The sales representative met with the client, and discussed the renewal terms.
  2. The client called yesterday, to request a revised timeline.
  3. Our team is prepared, to present the findings on Friday.
  4. The marketing team developed a detailed campaign for the new product launch, across three regional markets.
  5. The finance team reviewed the invoices, and submitted the payment request.
  6. The accounting department expects, to finish the report by noon.
  7. The company plans to expand its customer-support services during the next fiscal year, to improve response times.
  8. Our supervisor drafted the announcement, and emailed it to the staff.
  9. The director explained that the merger would create new opportunities for staff members, in several departments.
  10. Employees must complete the training program, and receive their certification.

Comma or No Comma_Exercise

Comma or No Comma_Answer Key


Intended for classroom use only–posting or wide distribution with authors’ permission only ©The Guffey Team, 2026.

The word cloud and some of the sentences were created with the help of ChatGPT.

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