Unit 3 How often do you go hiking ,Unit 2 Vacation Plans ? Period 1,Were going to Beijing for a vacation,How are we going to BeijingWere going,by plane,taxi,car,bus,ship,plane,boat,train,transport,by（乘,Brainstorming(头脑风暴）：Try to guess about the transportation I go to Chaoyang park. 猜猜老师去公园使用的交通工具,subway,car,by（乘,How are you going to the park,Were going,bus,subway,by bus,by car,by subway,2015,2011,2010,2009,1980,1640,1440,840,640,Tang Dynasty （唐朝,In1814,Stephen invented the first train,发明,In 1903
