1、Unit 13We are trying to save the earth.,Section A 3a-3b,Warm up:Think of some endangered animals.,Answer these questions:What do you know about sharks?Do you think sharks are endangered? Why?What can we and our government do to help save the sharks?,Southern China,Around 70 million,To develop laws t
2、o stop the sale of shark fins,WildAid and the WWF,Lets learn some,language points,harmful 形容词，意为“有害的”。常构成短语be harmful to “对有害的”。Staying up often is harmful to your health. 经常熬夜对你的健康有害。【拓展】harm 名词，意为“害处”。常用构成短语do harm to “对有害”，相当于be harmful to. Too much smoking does harm to his health. = Too much smo
3、king is harmful to his health. 吸烟过多对他的健康有害。,at the top of 意为“在的顶部或顶端”。The answer is at the top of the page.There is a tower at the top of the hill.the food chain 食物链the number of “的数量”，作主语时，谓语动词用单数形式The number of the books 400.a number of “许多”作主语时，谓语动词用复数形式A number of children playing in the park.,i
4、s,are,Read the passage about sharks and complete the fact sheet below.,3a,Lets do this to review the text !,Some people like to eat sharks fin soup, especially in _China. But getting the s harks fin is very _. When people catch sharks, they _ _their fins and throw the sharks into the ocean. The shar
5、k slowly dies because it cant _ without the fin. And it is also _ to the environment. Sharks are at the _ of the food chain. If the number of sharks drops too low, it will break the balance of nuture. Please say no to eating the shark fin soup, and take action to save the sharks!,southern cruel cut off swim harmful top,Homework,Review the new words and expressions.Recite the passage in 3a.,Thank You!,U盘、电脑坏了？教学资料不见了？以前的资料没保存？每一届重复劳动？找不到精品课件、试题、教案反思？各大文库价格昂贵？来【163文库】吧，你可以：上传分享资料赚取零用钱；创建教学空间，分类收藏存储资料；方便下届使用；百万教学资源供你下载；【平台地址：】,
