初 级 Unit One Greetings and Sending off 第一单元打招呼及送行 Unit Two Asking about Public and Business Areas 第二单元询问公共场所Unit Three Asking the Guest to Wait and Offering Help 第三单元请客人等候以及提供帮助Unit Four Making Phone Calls 第四单元打电话 Unit Five COngratuIatiOns and Apprecia