人教版九年级Unit 13 We're trying to save the earth!-Section A 3a—3b-ppt课件-(含教案+视频+音频)-公开课-(编号：b018c).zip

Section A 2 3a-3b The earth is badly polluted. What should we do to save the earth? Lets take action (采取行动采取行动) Turn off the lights when you leave a room. Recycle books and paper. Take buses instead of driving cars. Dont use paper napkins. You can help reduce pollution by putting that soda can in a different bin. Leave your car at home. Take a bus or ride your bike to work. Turn off the lights when you leave a room. There are some animals are endangered. We should do something to protect the animals and the environment! The zoos provide homes for many endangered animals. 1. What do you know about shark(鲨鱼鲨鱼)? 2. Do you think sharks can be endangered? Why? 3. What do you think might cause a fall in the number of sharks? Where shark fin soup is popular Number of sharks caught and traded every year How much the numbers of some kinds of sharks have fallen in the last 20 to 30 years Two environmental groups which are against “finning” southern China 70 million over 90 percent WildAid and the WWF 3a Read the passage about sharks and complete the fact sheet below. Retell the passage according to the words below. shark fin soup in southern China each time cut off no longer not onlybut also at the top drop be endangered the strongest around 70 million fallen by over 90 percent WildAid and the WWF develop laws scientific studies 3b Read the passage again and fill in the blanks with the words in the box. so although if but when 1. Many people do not realize they are killing a whole shark _ they enjoy a bowl of shark fin soup. 2. Sharks are at the top of the food chain, _ if their numbers drop, the oceans ecosystem will be in danger. when so 3. Many think that sharks are too strong to be endangered, _ they are wrong. 4. _ there are no scientific studies to support this, a lot of people believe that shark fins are good for health. 5. Sharks may disappear one day _ we do not do something to stop the sale of shark fins. but Although if adj. 科学上的，科学的科学上的，科学的 Write 5 measures to protect the environment. UnitUnit 1313 We are trying to save the earth! SectionSection A A 3a3a3b3b（第二课时）（第二课时） 话题话题 Protecting the environment 功能功能 Talk about pollution and environmental protection 教学目标教学目标 1.知识技能知识技能 1）Target language: No scientific studies have shown that shark fins are good for health. The number of some kinds of sharks have fallen be over 90 percent in the last 20 to 30 years. 2）Grammar: Present perfect 3）Words and expressions; 4）Curriculum words: shark, cruel, harmful, chain, ecosystem, industry, law, scientific, afford, reusable, transportation 4）Useful expressions: be harmful to, at the top of, the food chain, take part in, turn off, pay for, take action 2过程和方法过程和方法：According to finishing some tasks to train students integrating skills and train the ability of expressing students own opinions 3情感态度价值观情感态度价值观：Animals are our friends We must know how to love them and how to protect them That way, it is good for both animals and us. 学习策略学习策略：Reading for specific information. Taking notes, cooperative learning. 教学重点教学重点：Target Language 教学难点教学难点：How to improve students integrating skills 教学过程教学过程： 【预习导学】 预习课本内容：熟记 99 页单词，并默写。 1.鲨鱼_ 2.生态系统_ 3.残酷的_ 4.有害的_ 5.链条_ 6.工业，行业_ 7.法律，法规_ 8.鳍_ 读短文并找出以下短语 1.中国南方_2.at the top of_3.听说_ 4.cut off _5.到目前为止_ 6.throw back to _ 7.一碗鱼翅_ 8.in the last 20 to 30 years_ 9.食物链_ 10.be in danger _ 【展标导入】 展标：教师口述本节课教学目标 导入：谈论环境污染并引导学生说出如何改善环境。 【课堂研讨】 1.教师播放鲨鱼的录像，让学生对鲨鱼在形象上有直观的认识，并进一步介绍鲨 鱼的现状，让学生清楚鲨鱼正濒临灭绝，导入课题。 2.小组内检测短文中单词短语背诵情况。 3.阅读题目，了解中心大意。 （3a） 4.播放课文录音，学生感知课文大意。 5.精读课文，归纳文中的重点语法，并提示学生做好笔记（小组合作） 。 6.再次阅读课文，找出不会翻译的句子及其不理解的问题，讨论解决（小组合作） 。 7.利用所给重点词汇复述或背诵短文。 8.学生独立完成 3b.教师订对答案。 【检测反馈】 单项选择 1.Lu Xun is famous _ a great writer. A,of B.for C.as D.with 2.-Which shirt do you prefer? -Both. _ this shirt_ that one is my favorite. A.Both ,and B.Either,or C.Neither ,nor D.Not only,but also 3.We are trying _ our environment. A.take care of B.to take care of C.taking care of D.to taking care of 4.Every year,more than 70,000,000 sharks _ for their fins. A.were killed B.have killed C.are killed D.will killed 完成句子 1.这不仅是残忍的，而且对环境是有害的。 This is _ _ cruel,_ _ harmful to the environment. 2.环境保护正变得越来越重要。 _ _ is becoming more and more important. 3.让我们今早地行动起来吧！ Lets _ _ as early as possible. 4.我们学校的人数在最近五年下降到原来的百分之八十。 The number of our school has _ _ 80% in the last five years. 【小结评价】