This chapter provides a comprehensive exploration of tense and subject-verb agreement in English grammar. It systematically explains how the English language represents time through various tense forms: past, present, and future, and how these forms are constructed and interpreted. The chapter discusses both simple and aspectual tense constructions, detailing their functions, structures, and appropriate usage. In parallel, it delves into the principles of agreement, particularly subject-verb concord, emphasizing how grammatical features such as number and person influence verb forms. A wide range of examples, including those involving compound subjects, indefinite pronouns, collective nouns, and exceptional cases, are used to clarify patterns and rules of agreement, offering insights into both the syntactic and semantic dimensions of grammatical correctness.