Personal pronouns, Possessive determiners, Possessive pronouns in English

Personal pronouns Possessive determiners Possessive pronouns
as subject (nominative) as object (accusative and dative) as an adjective as a noun
I me my mine
you you your yours
he him his his
she her her hers
it it its its
we us our ours
you you your yours
they them their theirs
We have some books. The books are for us. These are our books. The books are ours.

Note: his and its can be possessive determiners or possessive pronouns. Look at the complete sentences to find out which function the pronoun has.