What are the possessive adjective(s) in this sentence? My Sister and I love our new apartment.
Possessive pronouns demonstrate ownership. Similar to words that use apostrophes to denote ownership, like the dog's or all the teachers', possessive pronouns are a special form of these that are created using the pronouns.
All the possessive pronouns can be listed.
When used alone, they are:
mine, yours, his, hers, ours, theirs, whose
When they modify a noun, they are:
my, your, his, her, its, our, their, whose
So, in the sentence, the only possessive pronouns are the my in my sister and the our in our new apartment.