This document discusses subject pronouns in English and Spanish. It defines what a pronoun is and identifies the main subject pronouns in both languages. In English, the subject pronouns are I, you, he, she, it, we, and they. In Spanish, the subject pronouns are similar but there are some differences, including variations of the second person pronoun "you" depending on formality (tú, usted, vosotros, vosotras, ustedes). The document provides examples of usage for each pronoun in both languages.