Unit 2How often do you exercise?Language Goal【语言目标】Talk about how often you do things：in this unit，students learn to talk about what things they do and how often they do these things.Knowledge Goals【知识目标】Key Wordshousework，hardly，ever，once twice，full，maybe，least，junk，coffee，health，percent，online，although，through，mind，body，such，together，die，writer，dentist，magazine，however，than，almost，less，pointKey Phraseshow often，on weekends，go to the movies，hardly ever，twice a week，three ti
