What is a possesive form?

Answer 1

The possessive form, or genitive case, is the last surviving oblique case of the English noun. The old dative, accusative and instrumental cases dropped out of English, except for a trace in the personal pronouns and a few words, like "thus."

In nouns: the possessive form is shown by the ending -'s for all singulars and for those plurals that do not already end in s, for example Jess's house and the men's room; and -' alone for plurals ending in s, for example the Joneses' house and States' Rights.

The possessive forms of the pronoun are: my, thy, his, her, and its; our, your, and their.

English has also developed another way to form the possessive, with the preposition "of," for example You have not seen the last of me, and This is the House of God. In the noun this construction is French, and since the Norman Conquest in some usages it has been considered more refined or dignified than the native Germanic form.