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Arts and Entertainment > Writing & Language > A Concise Guide to Grammar and Style > Punctuation

Apostrophe

Use an apostrophe to indicate:

The possessive case of singular and plural nouns, indefinite pronouns, and proper nouns:

my sister's son	somebody's lunch
my two sisters' sons	Charles's house
the children's toys	the Rosses' friends

The plural of letters, numbers, symbols, and words used as such:

too many thus's	ten 5's in a row
spelled with two e's	delete some &'s

Missing letters in contractions and missing numbers in dates:

I'm (I am)	class of '95
ma'am (madam)	winter of '97–'98

See also: Apostrophes

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Quotation Marks

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