Unit 2 How often do you exercise第四课时Section B (1a1e)教学目标1.掌握下列单词：junk, junk food, coffee, health 2. 巩固频率词汇,能听懂并熟练掌握活动频率的问答方法。课时重点1.会用频度副词就基本饮食习惯进行对话。2.会用want, be good for 和how often 进行提问。预习导学 不看不讲一、填一填1.喝牛奶 _ 2.每天_3.想要某人做某事_4.每天晚上_ 5.对有好处_6.垃圾食品_ 7.好习惯_二、译一译1. How many hours do you sleep every night?_1. How often do you eat fruit?_三、想一想1. 将单词与图中物品配对，完成教材上的1a。2.请用how often , how many hours 两个短语仿照例句写出两个句子。例句：How often do you exercise?_合作探究 不议不讲活动一1. 完成教材上1a的连线题，然后按照教材上1b的句型小组展开对话练习。2. 用英语说说你自己在生活和饮食方面的爱好和习惯，比一比，看看谁的习惯最健康。完成任务所需的语言结构：How often do you exercise?How often do you eat fruit?How many hours do you sleep every night?How often do you drink milk?How often do you eat junk food?How often do you drink coffee?活动二1. 听教材上的1c的录音，完成1c。2. 再听一遍录音，回答教材上1d的问题。3. 跟随磁带，全班一起朗读一遍听力材料。知识超市l She says its good for my health.她说它（牛奶）对我的健康有好处。1. 本句式一个含有宾语从句的复合句。主句是she says, its good for my health 是省略了引导词that的宾语从句，从句要用陈述句语序。2. be good for 对有益处/好处。其反义短语为be bad for (对有害)。例如：Fruit and vegetables are good for our health.水果和蔬菜对我们的健康有益。l good的相关短语1. be good to 对友好/和善/慈爱，相当be friendly to 或be kind to。例如：Miss Li is good to us.李小姐对我们很和善。2. be good at 擅长；善于。其后接名词、代词、或动名词。例如：I am good at playing basketball.我擅长打篮球。3.be good with 灵巧；善于应付的。例如：They are good with children.他们对孩子很有一套。导学测评 不练不讲基础题初显身手一、按要求完成下列各题用be good for, be good at, 或be good with 的适当形式填空。1.I _ English .often speak English with foreigners.2. Water _ our health .Please drink it every day.3. Miss Green _children. She can do the job.能力题 挑战自我一、 单项选择（ ）4. Eating a lot of vegetables and fruit is good _ our health.A. at B. for C. of D. with( ) 5.She always eats junk food and never exercises, so she is very _.A. health B. healthy C. unhealthy D. healthily三、句型转换6. I sleep 8 hours every night.(对划线部分提问)How _ _ do you sleep every night?7. He watches TV twice a week. (对划线部分提问)_ _ _ he watch TV?1. Jack does his homework every day. (改为否定句)Jack _ _his homework every day.3