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256 pages, Paperback
Published June 1, 1995
When not to use an apostrophe
Possessive pronouns never take an apostrophe. 'It's' can only mean 'it is'; this apostrophe can never be used to indicate possession or the genitive case with 'it'. Thus you cannot write 'it's weight' when you mean 'the weight of it'; the correct spelling is 'its weight'.
Similarly, apostrophes should not be used with other pronouns like his, hers, ours, yours, theirs.