1. how often 多久一次 2. as for sth/doing sth 至于，关于
3. of course=certainly=sure 当然 4. look after=take care of=care for照顾
5. hardly ever 很少 6. surf the Internet 网上冲浪
7. the results of the student activity survey 学生活动调查结果 [来源:学&科&网Z&X&X&K]
8. be good for my health 对我的健康有益 9. her eating habits 她的饮食习惯 10. want us to eat junk food 想让我吃垃圾食品 11. exercise twice a week 一周锻炼两次 12. go skateboarding 去滑板 13. come home from school 放学回家 14. try to eat a lot of vegetables 尽量多吃蔬菜 15. healthy lifestyle 健康的生活方式 16. keep in good health=keep healthy=be in good health 保持身体健康 17. improve your English 提高你的英语水平
