Possessive Determiners/Adjectives:
● Before a noun: my diary, her birthday
● After ALL, BOTH, HALF, or after a quantifier + OF: all my money, a lot of his time
● With parts of the body: I’ve hurt my back.
● THE is used in this pattern where we have just mentioned the person: Someone pushed me in the back.
● Own: (exclusive relation) my own flat
● Idioms: my best, take our leave, etc.