Case is the grammatical function of a noun or pronoun. There are only three cases in modern English, they are subjective (he), objective (him) and possessive (his). They may seem more familiar in their old English form - nominative, accusative and genitive. There is no dative case in modern English.
The pronoun cases only three:-
Subjective/Nominative | Objective/Accusative | Possessive/Genitive |
---|---|---|
Referring to the subject in a sentence | Referring to the object in a sentence | The apostrophe form of the word ("Lynne's). |
I | Me | Mine |
You | You | Yours |
He | Him | His |
She | Her | Hers |
It | It | Its |
We | Us | Ours |
They | Them | Theirs |
Who | Whom | Whose |
These pronouns, and who and its compounds, are the only words that are inflected in all three cases (subjective, objective, possessive). In nouns the first two cases (subjective and objective) are indistinguishable, and are called the common case. One result of this simplicity is that, the sense of case being almost lost, the few mistakes that can be made are made often, even by native speakers, some of them so often that they are now almost right by prescription.