經典英語教材：溝通式教學法大師Jack C. Richards 精 心編寫，共分四級，各級數亦提供 A/B 分冊與COMBO 版本，彈性配合老師授課時數安排。
Interchange Fourth Edition is an updated version of the world’s most successful English series for adult and young adult learners. Interchange’s well-known communicative and functional methodology has been tried and tested by millions of students around the world. This edition offers updated content in every unit, grammar practice, and opportunities to develop speaking and listening skills. The underlying philosophy of the course remains that language is best learned when it is used for meaningful communication.
•Better integration of course components makes planning and teaching lessons easier than ever before
•The course adapts to any type of class size and to any teaching situation
•A range of digital and web tools present the content in interactive ways, providing new practice opportunities for students, and enabling teachers to assess students comprehension of the course material
◎ 打破學習藩籬：隨書附有學生自修光碟 (Self-Study DVDROM)，內容包含額外聽說讀寫等練習活動，其中亦收錄 DVD 影片，供學生強化學習。
◎ 線上資源豐富：提供老師延伸學習單、課堂活動設計參 考、教學資源規劃表等；學生則可免費線上下載 MP3 音 檔，以及進行線上趣味遊戲 (Interchange Arcade) 等。
◎ 教學資源完備：課室軟體(Presentation Plus)，內含課本 所有內容、音檔、學習單和教學影片等，協助老師輕鬆備 課，精彩授課；逐頁對照的教師手冊，提供課後評量光碟 (Assessment Audio CD/CD-ROM)，備有口說與紙筆測驗 可供運用。