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Do not use commas to bracket phrases that are essential to a sentence's meaning.

Examples

  • Incorrect: The man, who has too many ties, has too few necks.

  • Correct: The man who has too many ties has too few necks.

  • Incorrect: The cats, with six toes, are a unique attraction of the tour of Hemingway's house.

  • Correct: The cats with six toes are a unique attraction of the tour of Hemingway's house.

    References

    More information about this rule is available from the following sources.

    Online Resources:
  • The Elements of Style: rule 3

Printed Resources: (see Books on Writing section)

  • Strunk and White: 1-3
  • Hacker: P1-e