* Nominative: This case indicates the subject of a verb. It answers the question "Who?" or "What?"
* Objective: This case indicates the object of a verb or preposition. It answers the question "Whom?" or "What?"
* Possessive: This case indicates ownership or possession. It answers the question "Whose?"
Let's break down the differences with examples:
Nominative Case
* Subject of the verb: *She* went to the store. (Who went?)
* Used after the verb "to be": It was *he* who called. (Who was it?)
* Used after the verb "to seem": It seemed like *her*. (Who did it seem like?)
Objective Case
* Object of the verb: The dog chased *him*. (Whom did the dog chase?)
* Object of a preposition: I gave the book *to her*. (To whom did I give the book?)
* Used after the infinitive "to be": I want it *to be her*. (Who do I want it to be?)
Possessive Case
* Shows ownership: This is *John's* car. (Whose car is it?)
* Used with a noun to indicate possession: *The dog's* tail was wagging. (Whose tail was wagging?)
Important Notes
* English is a relatively case-less language compared to other languages. The difference between nominative and objective cases is only clear with pronouns (I/me, she/her, he/him, etc.).
* The possessive case is marked by an apostrophe followed by "s" for singular nouns ('s) and an apostrophe alone for plural nouns (s').
Let me know if you have any more questions!