unit 3 a healthy life period 2 language points learning aims: 1. to master the important usages of the key words and expressions. 2. to learn to use the structure properly. important and difficult point: to master the usage of of the key words and expressions. 《使用说明及学法指导》阅读课本第17-19页，自学《同步测练》p language points1- , 完成预习案。(30分钟) 预习案previewing case task 1. 英汉互译 1. 青少年n./青春期的adj.______________ 青春期n._______________ 2. 禁止n./vt._______________ 3. 由于 _______________ 4. 对……有瘾 ________________ 5. 习惯于 _________________ 6. 脱瘾症状 _________________ 7. 痛苦 _______________ 8. 再三重复 ___________________ 9. 无意识地adv._______________ 10. 精神上地adv.______________ 11. 停止，离开 v. ___________
