possessive pronouns /whose

 

Possessive pronouns are used in English to avoid repeating information that is already clear. In general it makes the sentence less confusing because the same information is not being repeated.

This book is my book, not your book. (Sounds repetitive)
This book is mine, not yours. (Mine and yours are possessive pronouns)

In the sentence, mine is a possessive pronoun that replaces my book.
In the sentence, yours is a possessive pronoun that replaces your book.

The possessive pronouns in English are as follows:

Subject	Possessive Pronouns
I	Mine
You	Yours
He	His
She	Hers
It	--- *
We	Ours
You (pl)	Yours
They	Theirs

whose vs Who’s

Both who’s and whose come from the pronoun who (shocking, right?).

Who’s is a contraction, meaning it’s two words stuck together with some of the letters left out, and those letters are replaced with an apostrophe. The formula: who + is or who + has = who’s.

Who’s hungry?

Whose is the possessive form of the pronoun who. Use it when you’re asking (or declaring) to whom something belongs.