This document discusses subject-verb agreement rules in the simple present tense of English. It provides examples of verbs used with different subjects in the simple present, including "I", "you", "he/she/it", "we" and "they". It also describes when the simple present is used, such as for general truths, habits and present states. Additionally, it notes some instances where subject-verb agreement can be difficult, including with compound subjects, subjects followed by prepositional phrases, and indefinite pronouns.