| 1. The apostrophe is used to indicate the possessive case of nouns and indefinite pronouns. The possessive case of almost all singular nouns may be formed by adding ۥs. The possessive case of plural nouns is generally formed by adding an apostrophe only. The possessive case of irregular plurals is formed by adding ۥs.
| Mr. Brown’s house
the girl’s mother
the children’s toys
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| 2. The apostrophe is used in writing contractions.
| don’t
they’ve
he’d (for he would or he had)
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| 3. The apostrophe is used to mark omission of digits in numbers.
| Expired in ’97 (for 1997)
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| 4. The apostrophe is used to form plurals of letters, figures, punctuated abbreviations, symbols, and words to as words.
| Mind your p’s and b’s.
His 1’s can be confused with 7’s.
Many students have difficulty with pronouncing their the’s.
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