Lesson 1 Getting to Know Each OtherLesson 2 Before We Go: Planning a TripLesson 3 At the Airport (Ⅰ): Checking inLesson 4 At the Airport (Ⅱ): Boarding and LuggageLesson 5 At the Airport (Ⅲ): Reconfirm and StandbyLesson 6 At the Airport (Ⅳ): Filling out FormsLesson 7 On the Plane (Ⅰ): TakeoffLesson 8 On the Plane (Ⅱ): After TakeoffLesson 9 After Landing (Ⅰ): Passing the ImmigrationLesson 10 After Landing (Ⅱ): CustomsLesson 11 After Landing (Ⅲ)﹔Baggage Claim and CurrencyLesson 12 On We Go(Ⅰ): Car Rental(1)Lesson 13 On We Go(Ⅱ): Car Rental(2)Lesson 14 On We Go(Ⅲ): DrivingLesson 15 On We Go(Ⅳ): TaxisLesson 16 Mass Transportation(Ⅰ): BusesLesson 17 Mass Transportation(Ⅱ): Train and Subway