句型拓展。 1.What are you doing for vacation ?(作回答) ______________________________________________ 2.I am leaving for Beijing next weekend .(提问划线部分) _________ __________you leaving for shanghai? 3.He is going to Beijing with his father .(提问划线部分) ______ is he going to Beijing _________? 4.We are staying there for two days . (提问划线部分) _________ __________are you staying there? 5.They often go to Beijing for vacation.（提问划线部分） ______ _________they often go?