教案Unit 13 We are trying to save the earth!.doc

Unit 13 We are trying to save the earth!第一课时 Section A（1a 2d）I. 知识目标 重点单词 1. litter v.乱扔；n. 垃圾；2. ugly adj. 丑陋的；3. advantage n. 优点；4. cost v. 花费； 5. wooden adj. 木制的； 6. bottom n. 底部；7. fisherman n. 渔民； 8. coal n. 煤； 9. plastic adj. 塑料的; 10. takeaway n. 外卖食物；11. bin n. 垃圾箱 重点词组 1. at the bottom of the river在河床底部 2. be full of the rubbish充满了垃圾 3. throw litter into the river把垃圾扔入河中 4. land pollution土地污染 5. play a part in cleaning it up尽一份力把它清理干净 6. make a difference产生影响 7. fill the air with black smoke使空气中充满了黑烟 8. cut down air pollution减少空气污染 重点句式1. Everyone in town should play a part in cleaning it up. 城里的每个人都应当尽一份力把它清理干净。 2. To cut down air pollution, we should take the bus or subway instead of driving. 为了减少空气污染，我们应当乘坐公汽或地铁而不是开车。 II. 课堂环节 自主学习方案 【自学自查】 根据汉语提示完成单词。 1. We should put up notice to stop from littering (乱扔）。 2. The teacher asked us to find a way to pick up the coins at the bottom (底部）of the bottle. 3. There are no more fish for fishermen (渔夫）to catch in the river. 4. We should take the paper bags to go shopping instead of the plastic (塑料）ones.5. Could you please tell us another advantage(优点）of riding bike to work? 课堂导学方案 Step 1 情景导入（参考案例） 用多媒体给学生播放一些有关环境污染的图片或视频，然后询问学生对环境污染的看法和观点。 Teacher: What kinds of pollutions do you know？ What do you feel about the pollution? Students: I think there are_. noise pollution air pollutionwater pollution Step 2 完成教材1a-1c的任务 【操作案例】 1. 要求学生翻开课本P97，迅速阅读1a部分的内容。把方框中的单词按它们产生污染的类 型写入相应的栏目中，并添加更多的单词。 2. 检查答案，先要求全班一起给出答案并检查讨论。然后要求2-3名同学给出自己的答案， 并把收集的答案列举在黑板上。 3. 要求学生听第一遍录音，并根据听到的内容完成课本上1b表格中的句子。然后要求2-3 名同学读出序号-读出所填单词-读出完整的句子 1. polluted, rubbish, fish 2. litter, rubbish 3. newspaper, stop, clean 4. 完成教材1c的任务，要求学生模仿1a内容，编造自己的关于污染的对话并进行对话练习。并邀请2-3对同学当堂进行演示。 Step 3 完成教材2a-2c的任务 【操作案例】 1. 要求学生翻开课本P98。播放录音一遍，完成2a，2b的听力任务，然后个别检查，统一核对答案。 2. 要求学生听第二遍录音，并逐句进行跟读。 3. 放下听力材料，要求学生模仿听力内容，利用2a，2b的信息分角色练习Jason与 Susan的对话。然后邀请2-3 对同学当堂演示。看哪一对的表现最佳。 备课资料包 词汇包： cost vt.1. 花费；价格为；值： 例句: It must cost a good deal to live here. 住在这里一定要花很多钱的 拓展：take， spend ，cost ，pay的用法都可以表示花费，但用法却不尽相同。 1. spend的主语必须是人， 常用于以下结构： (1) spend time money on sth. 在上花费时间（金钱）。例：I spent two hours on this maths problem. 这道数学题花了我两个小时。 (2) spend time money (in) doing sth. 花费时间（金钱）做某事。例：They spent two years (in) building this bridge. 造这座桥花了他们两年时间。 (3)spend money for sth. 花钱买。例：His money was spent for books. 他的钱用来买书了。 2. cost的主语是物或某种活动， 还可以表示值， 常见用法如下： (1)sth. costs (sb.) 金钱,某物花了（某人）多少钱。例：A new computer costs a lot of money. 买一台新电脑要花一大笔钱。 (2) (doing) sth. costs (sb.) 时间, 某物（做某事）花了（某人）多少时间。例：Remembering these new words cost him a lot of time. 他花了大量时间才记住了这些单词。 注意：cost的过去式及过去分词都是cost,并且不能用于被动句。3. take后面常跟双宾语， 常见用法有以下几种： (1) It takes sb. 时间to do sth. 做某事花了某人多少时间。例：It took them three years to build this road. 他们用了三年时间修完了这条路。 (2)doing sth. takes sb. 时间,做某事花了某人多少时间。例：Repairing this car took him the whole afternoon. 他花了一下午修车。 4. pay的基本用法是： (1) pay (sb.) money for sth. 付钱（给某人）买。例：I have to pay them 20 pounds for this room each month. 我每个月要付20英磅的房租。 (2)pay for sth. 付的钱。例：I have to pay for the book lost. 我不得不赔丢失的书款。 (3)pay for sb. 替某人付钱。例：Don?蒺t worry!Ill pay for you. 别担心， 我会给你付钱的。 (4)pay sb. 付钱给某人。 例: They pay us every month.他们每月给我们报酬。 (5)pay money back 还钱。例：May I borrow 12 yuan from you? Ill pay it back next week. 你能借给我12块钱吗？下周还你。 (6)pay off ones money还清钱。 【课堂变式】 How much is the ticket to Central Park? A one-way ticket _ $40, and you can _ another $20 for a round-trip. A. costs, pay B. cost, spend 新- 课 -标 C. pay, spend D. spends, pay 【解析】考查动词辨析。cost花费物作主语，spend花费人作主语，pay for付款， 人作主语，所以选择答案A。 课堂练习 一、用动词的适当形式填空。 1) Were trying _ (save) the earth. 2) There used to_ (be) clean and beautiful. 3) There are too many _ for _to catch (fish). 4) Its bad for environment to use _ (wood) chopsticks. 二、根据句意用take, spend, pay或cost的适当形式填空。 1） That new car _ them lots of money. 2） Mona_ 50 yuan on the books just now.3） It usually _ me an hour to do my homework. 4） You should _ some time pracitising your pronunciation. 5） My brother _ 6,000 yuan for the new computer yesterday. 课后作业： 教学反思： 第二课时 Section A（3a 3c）I. 知识目标 重点单词 1. shark n. 鲨鱼； 2. fin n. 鱼 鳍 3. method n. 方法；4. cruel adj. 残酷的； 5. harmful adj. 有害的；6. chain n. 链条；7. ecosystem n. 生态系统；8. industry n. 工业； 重点词组1. shark fin soup鱼鳍汤 2. at the top of the food chain处于食物链的顶端3. develop laws 建全法律 4.in the last 20 to 30 years在最近的20到30年间 5. the sale of shark fins 鱼鳍买卖 6.environmental protection groups around the world 全球环境保护组织 重点句式1. But do you realize that youre killing a whole shark each time you enjoy a bowl of shark fin soup. 你意识到了吗，当你每次在品尝一碗鱼鳍汤时，你正在杀死一整头鲨鱼。 2. This method is not only cruel, but also harmful to the environment.这种方法不仅残酷，而且对环境有害。 II. 课堂环节 自主学习方案 【新词自查】 根据汉语提示完成单词。 1. Carl is planning to travel by ship because he wants to see the sharks (沙鱼）in the sea. 2. You should teach them the method(方法）of how to grow apples instead of giving them apples. 3. Its harmful(有害的)to throw the old battery in the water. 4. Many countries have made laws（法律）to keep the animals. 5. If the animals are endangered , it may broke the ecosystem(生态系统）of the world. 课堂导学方案 Step 1情景导入（参考案例） 用多媒体播放一段鲨鱼的视频，以及姚明的“没有买卖就没有杀戮”的公益广告。然后询问学生 Do you like animals? How do you help protect the endangered animals? Step 2完成教材3a 的任务 1. 要求学生快速默读短文，熟知大意，并完成课本3a的任务。然后邀请几位同学给出自己的答案，全班一起检查讨论。 1）. In southern China. 2）. Around 70 million sharks 3）. Over 90 percent 4）. They are WildAid and the WWF. 2. 先邀请几位同学朗读短文，教师要注意语音，及时纠正。然后播放录音，全班同学一起跟读。 3. 短文内容巩固练习。让学生用自己的话复述根短文内容。 1）. when 2）.so 3）. but 4）.Although 5）.if 备课资料包 1. This method is not only cruel, but also harmful to the environment.这种方法不仅残酷，而且对环境有害。 not onlybut also意为“不仅而且”用于连接两个表示并列关系的成分，着重强调后者，其中的also有时可以省略。如：She not only plays well, but also writes music. 她不仅很会演奏，而且还会作曲。 He not only writes his own plays, he also acts in them. 他不仅是自编剧本, 还饰演其中的角色。Not only men but also women were chosen. 不仅仅是男的，女的也有被选中的。 He works not only on weekdays but on Sundays as well. 他不仅平时工作，星期日也工作。 Not only the students but also their teacher is enjoying the film. 不仅学生们在欣赏这部影片，他们的老师也在欣赏这部影片。 说明：若连接两个成分作主语，其谓语通常与靠近的主语保持一致。如： Not only you but also he has to leave. 不只是你，他也得离开。 若连接两个句子，not only后面的句子要用倒装，如： Not only did he speak more correctly, but he spoke more easily. 他不仅说得更正确，而且讲得更不费劲了。 【备课例句】 The plane flew above the clouds. 飞机在云层上飞行。 【课堂变式】 _Lisa _Lucy may go with you because one of them must stay at home to take care of the dog. A. Not only -but also B. Neither-nor C. Both-and D. Either-or 【解析】词义辨析。Not only -but also意为“不但-而且”； Neither-nor 意为“二者都不”， Both-and意为“二者都”；Either-or意为“二者其中之一”;根据句意：Lisa 与Lucy只有一个可能和你走，因为她们中一个必须呆在家照顾狗。所以应选；Either-or 课堂练习 (1) Not only but repair it. A. can he; he can B. he can; can he C. can he can he D. he can; he can (2) Not only Li Ming but I students. A. is B. are C. am D. be (3) Li Mei is interested in drawing. Also, she is good it. A. with B. to C. at D. for (4) My friend was good me when I was ill. She told me that eating more vegetables is good my health. A. with; for B. to; for C. with; to D. for; with 课后作业： 教学反思： 第三课时Section A（Grammar focus 4c）I. 知识目标 重点单词1. afford v. 承担得起；2. recycle v. 回收利用；3. reusable adj. 可重复使用的；4. transportation n. 运输业； 重点词组1. take part in 参加 2. cant afford to do sth 负担不起做某事 3. take action 采取行动 4. turn off 关掉 5. pay for付费 6. add up累加 7. use public transportation 使用公共交通 重点句式1.It was considered the biggest clean-up project this city had ever had. 这被认为是这个城市曾经开展的一次最大幅度的清理活动。 2. We cant afford to wait any longer to take action! 我们不能再等待更长的时间来采取行动！ 3. Many forget that saving the earth begins with small things. 许多人忘记了拯救地球要从小事做起。 II. 课堂环节 自主学习方案 【新词自查】 根据汉语提示完成单词。 1. The shoes are so expensive that I cant afford (买得起）them. 2. We should use reusable (可重复使用的）chopsticks when we eat outside. 3. What do you think of the transportation(交通）in China? 4. The Spring Festival is considered(认为是）by turning off the lights when we leave a room. 课堂导学方案 Step 1情景导入（参考案例） Teacher: Have you ever take part in an environment project? How should you do to save the environment? Students: We can_. turn off the lights when use the paper bags. walk to school Step 2. 畅通Grammar Focus回顾语法重点. 要求学生翻开课本P100，要求学生分角色问答并翻译表格中的句子。复习各种句式所含的时态与句型结构及基本用法。并能造出相仿的句子。Step 3完成教材4a-4c的任务 1.用4a对话中所对单词的正确形式完成对话.给出5分钟的时限，然后请2位同学朗读对话，全班集体核对答案。 Have,