Ex- Paula brought her grandfather to speak to the class.
Use nominative case for pronoun that is the appositive of a subject or a predicate nominative. Use objective for pronouns that is the appositive of a direct object, indirect or object of preposition
Nom ex- The winners, mitzi and she, collected their trophies
Give the tickets to the ushers, Bart and him. Objective
When an appositive follows a pronoun, chose the case of the pronoun that would be correct if the appositive were omitted.
Nom ex- We winners collected our trophies. We collected our trophies.
Obj ex- Give the tickets to us ushers. Give the tickets to us.
Before pronoun- objective after- nominative
Use whom for the direct or indirect object of a verb or verbal or for the object of a preposition.
Use who for subjects.
Pronouns must agree in person with its antecedent. When the antecedent of a pronoun is another pronoun, be sure that the two pronouns agree in person
Use singular personal pronoun when the antecedent is a singular indefinite pronoun such as anybody, anyone, anything, each, everybody, everyone, everything, much, neither, nobody, no one, nothing, one, other, somebody, someone or something.
If the antecedent refers to a person and the gender is not specific, use he or she, him or her, his or hers. Use plural personal pronouns when the antecedent is a plural indefinite pronoun such as several, both, few and many.
Some indefinite pronouns can be either singular or plural depending on the context of the sentence all, any, enough, more, most none, and some.