This document provides details for an English lesson plan for a 4th year secondary school class in Neuquén, Argentina. The lesson focuses on revising tenses and introducing the definite article. It includes the teaching points, aims, language focus, teaching approach using the Natural Approach and PPP method. It outlines warm-up activities having students discuss their English learning experiences in small groups. It also includes a communicative activity, activity to review tenses, and a presentation activity introducing the definite article. It provides assessment of students' comprehension and details potential problems and solutions.