Part 1 社交礼仪 Communications Decency Unit 1 见面问候 Greeting(2) Unit 2 自我介绍Self-introduction(4) Unit 3 介绍他人 Introducing Others(6) Unit 4 约会见面 Making an Appointment(8) Unit 5 取消约会 Cancelling the Appointment(10) Unit 6 邀请 Inviting(12) Unit 7 提建议 Making Suggestio