Four Corners SB 3A w CD-Rom Four corners is an integrated English course for adults who want to use English to communicate effectively in daily life. Easyy and enjoyable to teach, Four Corners combines proven communicative methodology with a practical outcomes-based approach. The course features a clear presentation of vocabulary, a thorough grammar syllabus, and an everyday functional language lesson in every unit together with systamatic practice of all four skills. Four Corners places special emphasis on