The personal pronouns in the following chart change what is known as case form according to their grammatical function in a sentence. Pronouns functioning as subjects or subject complements appear in the subjective case; those functioning as objects appear in the objective case; and those showing ownership appear in the possessive case.

Pronouns in the subjective and objective cases are frequently confused. Most of the rules in this section specify when to use one or the other of these cases (I or me, he or him, and so on). Section 24g explains a special use of pronouns and nouns in the possessive case.