This document is a teacher's guide for a 3rd year middle school English coursebook. It provides an introduction to the coursebook's objectives and layout. It emphasizes that the coursebook focuses on developing students' English skills through communicative, learner-centered activities that incorporate the four skills of listening, reading, speaking and writing. It also discusses the representation of core values in the coursebook and provides guidance on teaching pronunciation, suggesting a three-stage process of repetition, identification, and autonomous production to help students learn and produce sounds.