This title includes the following features: Grammar presented through authentic international contexts, for students to analyze and formulate the rules.; Focus on English for socializing, telephoning, and participating in discussions, enabling learners to communicate confidently in work-related situations.; Recognizes adults as active, resourceful learners, with regular review units, Workbook, Student's Cassette and Audio CD.; Integrated Pocket Book with grammar summaries, social phrases, and other key information for quick reference.Chương 1: Giới thiệu chung