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3. 好的饮食习惯对每个人都是必要的。 ___ ________ ______everyone ________ ________ good eating habits. 4. 玩电脑游戏对你的学习不利，你必须戒掉。 Playing computer games is bad for ______ ______. You must ____ __ _____. It’s necessary for to have your study give it up Discuss with your partner and write some class regulations. Eg: We must keep the classroom clean every day. 2. Finish the exercises in Section B. Thank you Unit 2 Keeping Healthy Topic 2 I must ask him to give up smoking. Section B New words: article smoke even cancer necessary active energy /`ɑ:tikl/ n. 文章，物品 /sm?uk/ v. & n. 吸烟，烟 /`i:vn/ adv. 甚至，即使 /`k?ns?/ n. 癌，癌症 /`nes?s?ri/ adj. 必要的，必需的 /`?ktiv/ adj. 活跃的，积极的 /`en?d?i/ n. 精力 活力 1 课堂导入 1. He coughs and he often _________（抽烟）？ 2. Smoking too much can_______________ (导致癌症). 3. It is __________（必要的）to learn En