1. Nominative Case: This case is used for the subject of a verb. For example:
* She went to the store.
* They are playing in the park.
* I am hungry.
2. Objective Case: This case is used for the object of a verb or preposition. For example:
* The dog chased her.
* He gave the book to me.
* I saw them at the party.
3. Possessive Case: This case shows ownership. For example:
* My car is red.
* This is their house.
* His name is John.
It's important to note that not all pronouns have distinct forms for each case. For example, "you" and "it" have the same form in all three cases.