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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. in the last 20 to 30 years 在最近的20到30年间
4. environmental protection groups around the world 全球环境保护组织
5. develop laws 建全法律 6. the sale of shark fins 鱼鳍买卖
重点
句式
But do you realize that you’re 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。
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。
The numbers of some kinds of sharks have fallen by over 90 percent in the last 20 to 30 years.
在最近的20年到30年的时间里，这种鲨鱼已经下降了90%。
4. So far, no scientific studies have shown that shark fins are good for health.
到目前为止，还没有科学研究证明鱼鳍对人们的健康有好处。
Sharks may disappear one day if we do not something to stop the sale of shark fins.
如果我们不采取措施来阻止这种鱼鳍买卖，鲨鱼可能有一天会消失。
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 (鲨鱼）in the sea.
2. You should teach them the method(方法）of how to grow apples instead of giving them apples.
3. It’s 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回顾2d相关知识，引出自然界的动物的现状——很多动物面临濒危。