Final answer:
The pronoun 'he' in the given sentence functions as a predicate nominative, which renames or provides more information about the subject after a linking verb. Pronoun cases include subjective, objective, and possessive, and affect how the pronouns are used grammatically within a sentence.
Step-by-step explanation:
In the sentence 'Yes, he is Bob Myers.' the pronoun in bold is used as a predicate nominative. A predicate nominative is a noun or pronoun that follows a linking verb and refers back to the subject, renaming or providing more information about the subject. In this case, 'he' refers back to and renames 'Bob Myers', thus it is a predicate nominative.
Pronoun case refers to how pronouns function within a sentence. There are three cases: subjective, where pronouns function as the subject of a sentence; objective, where they function as objects (direct object, indirect object, or object of a preposition); and possessive, which show ownership or relationship.
It's important to choose the correct pronoun case according to its function in a sentence to ensure proper grammar and clarity. For example: Subjective case pronouns: I, we, you, he/she/it, they, and who/whoever. Objective case pronouns: me, us, you, him/her/it, them, and whom/whomever. Possessive case pronouns: my/mine, our/ours, your/yours, his/her/hers/its, their/theirs, and whose.