Case 1. Definition: the function of pronoun in a sentence is shown by the case form of the pronoun. 2. Kinds of Pronouns There are three forms of pronouns: nominative, objective, and possessive. 3. The Nominative Forms: I, we, they, he, she, it, you, who. The nominative care are used as: § a subject of a sentence: · He is meeting a good friends · Who left his book here? § When the pronoun is used with a noun: · We boys will do the job. § a predicate nominative which refers to the same thing as the subject of the sentence. · It might have been they . · This may be he coming ...