Whose is this meaning refers to asking about ownership or possession using the possessive pronoun "whose." Unlike "who's," which is a contraction for "who is" or "who has," "whose" functions solely to indicate possession.
The word "whose" is a possessive relative pronoun. It modifies a noun to show ownership. For example, "Whose book is this?" asks about the owner of the book. The answer would use another possessive form, such as "It's John's book."
Whose is used in questions and relative clauses to determine ownership. It can refer to people, animals, or even inanimate objects personified. For instance:
People often confuse "whose" with "who's." "Who's" is a contraction, while "whose" indicates possession. For example, "Who's going to the party?" is correct, but "Whose going to the party?" is incorrect because it uses the wrong form.
Another mistake is using "whose" with inanimate objects that aren't personified. For example, "Whose pen is this?" is correct if referring to a person's pen, but "Whose storm caused the damage?" is incorrect because storms don't possess things.
Consider the sentence: "I found a wallet. Whose is it?" This correctly uses "whose" to ask about the wallet's owner. The response might be "It's Sarah's wallet," using the possessive form "Sarah's" to indicate ownership.
In contrast, the incorrect version would be: "I found a wallet. Who's is it?" This is wrong because "who's" implies "who is," which doesn't fit the context of asking about ownership.
Unlike other possessive pronouns like "my," "your," and "his," "whose" can function as both an interrogative pronoun (asking a question) and a relative pronoun (introducing a clause). For example, "Whose keys are these?" (interrogative) and "The woman whose keys were lost was very upset" (relative).
According to the Grammar Book, "whose" is one of the few pronouns that can serve dual roles in sentences, making it unique among possessive pronouns.