Tutorials

Tutorial for Apostrophe Usage
Back to Tutorials

What is it?

Use apostrophes for three purposes: to show possession, to indicate an omission, and to add an ending to a number, letter, or abbreviation.

  1. To make a singular noun possessive, add -’s.

    The surgeon's excellent reputation calmed Larissa’s fears.

  2. To make a plural noun ending in -s possessive, add an apostrophe.

    The researchers’ instruments were not properly sanitized.

  3. To make a plural noun not ending in -s possessive, add -’s.

    The temple offers a divorced women’s support group.

  4. Use an apostrophe to indicate an omission in a contraction.

    I can’t meet you at the gym; I’ve got too much homework tonight.

  5. Use an apostrophe to form the plural of an abbreviation and of a letter, word, or number mentioned as a word.

    My aunt is a member of the ACLU’s advisory board.

How to correct errors

  1. Apostrophes are used to make singular nouns possessive.

    The lawyers office needed a complete renovation.

  2. Apostrophes are used to make a plural noun ending in -s possessive.

    Students complaints can be brought to the attention of the dean.

  3. Add an ’-s to make a plural noun not ending in -s possessive.

    The childrens day care center shut down after months of mismanagement.

  4. Apostrophes indicate an omission in a contraction.

    You didnt have to return the dress-I wouldve worn it.

  5. Apostrophes form the plural of an abbreviation and of a letter, word, or number mentioned as a word.

    FDRs New Deal program is arguably his greatest legacy.

Site Navigation

  1. Home |
  2. Exercises |
  3. Scorecard |
  4. Gradebook |
  5. Tutorials |
  6. Glossary |
  7. Support |
  8. Site Map |
  9. FAQs |
  10. Contact Tech Support
  1. © 2010 Bedford/St. Martin’s