1. Faulty Predication: is when. , is where. , and reason
Faulty Predication: is when. . ., is where. . ., and reason. . . is because #65 FROM THE UWF WRITING LAB’S 101 GRAMMAR MINI-LESSONS SERIES

2. Use “is when” only to introduce a statement of time.
Noon is when this
class begins.

3. Use “is where” only to introduce a place.
Tallahassee, Florida, is where I was born and reared.

4. “Is when” and “is where” should not be used to introduce an explanation or a definition.
Incorrect: In baseball, a balk is where a
pitcher makes an illegal move.
Revised: In baseball, a balk is an illegal
move made by a pitcher.

5. Incorrect: Plagiarism is when a writer presents the thoughts and ideas of another author as his or her own. Revised: Plagiarism occurs when a writer presents the thoughts of another author as his or her own.

6. A statement containing “the reason” is followed by a “that clause, not a “because” clause
Incorrect: The reason he resigned is because
he had never received a promotion.
Revised: The reason he resigned is that he
had never received a promotion.