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Possessive Pronouns
Pronouns that express ownership are called possessive pronouns. Some are used alone; some describe a noun (therefore, they are considered adjectives). Possessive pronouns are not spelled with an apostrophe
Used alone (possessive pronouns): mine, yours, his, hers, ours, theirs, whose
Ex. This book is hers.
Pronouns used as adjectives: my, your, his, her, its, our, their, whose
Correct: That is her book.
Possessive Pronouns with Gerunds
Possessive pronouns are used to describe gerunds.
Ex: Your coming in spite of the rain touched us all.
Incorrect: I cant understand him coming to our side. (Which cant you understand? Him? or His coming?)
To avoid possible confusion, use possessive pronouns with gerunds.
Correct: I cant understand his coming to our side.