Unit1 Greetings and Introductions问候与介绍
Unit2 Daily Communication日常联系
Unit3 Invitation，Thanks and Apologies邀请、感谢与道歉
Unit4 Certainty and Uncertainty确定与不确定
Unit5 Requests and Responses请求与应答
Unit6 Lthes and Dislikes好恶
Unit7 Advice and Suggestions劝告与建议
Unit8 Weather天气
Unit9 Asking the Way问路
Unit10 Shopping购物
Unit11 Food and Drink饮食
Unit12 Travelling旅游
Unit13 HOtel旅馆
Unit14 Interests and Hobbies兴趣与爱好
Unit15 Meeting and seeing off Guests接送客人
Unit16 At the Post office and the Bank在邮局、银行
