(
课件网) Unit 3 Animals are our friends Lesson 17 Save the tigers 1.学习目标 3.重点探究 2.自主学习 学习导航 5.当堂检测 6.课堂总结 4.拓展提升 新课导入 Tigers are dangerous, and are you afraid of them Why In fact, some tigers are in danger, what should we do to protect them 学习目标 1.能熟悉并能正确运用本课时的重点单词和短语 2.能了解老虎的现状并保护老虎 自主学习 balance reason disappear kill cut decrease n. 平衡，平稳 n. 原因，动机，理由 v. 消失，失踪 v. 杀死 v. 砍，切，剪，割 v. 使……变小；减少 在……之初 下降到；跌至 食物链 保持平衡 处于危险状态 处于……危险中 把……砍到，减少 （出某事某人外）还，也 at the beginning of… drop to food chain in balance in danger in danger of cut down as well 重点探究 “Save the tigers”is a group of volunteers. These volunteers hope to save the tigers of the world. At the beginning of the 20th century, the number of tigers in the wild was around 100 000. But today that number has dropped to a few thousand. Tigers live in the forests of Asia. They usually have orange fur and dark stripes. Tigers are symbols of strength and courage. In many stories, they are brave. The tiger is at the top of the food chain. THINK ABOUT IT Where can you usually see a tiger Do you think tigers need our help Why or why not It helps keep the number of other wild animals in balance. For this reason, tigers are important to the environment. In recent years, tigers have been in danger of disappearing. Some people hunt and kill tigers for money. People have cut down a lot of trees as well. As forests disappear, tigers lose their homes. The number of tigers in the wild is quickly decreasing and we must do something about it. Learning Tip There are currently six types of tigers: the Bengal tiger, the Siberian tiger, the Sumatran tiger, the Malayan tiger, the Indochinese tiger and the South China tiger. B C A 1. Read the lesson and match each paragraph with its main idea. Save the tigers”is a group of volunteers. These volunteers hope to save the tigers of the world. The tiger is at the top of the food chain. It helps keep the number of other wild animals in balance. In recent years, tigers have been in danger of disappearing. Tigers lose their homes. The number of tigers in the wild is quickly decreasing 2. Read the lesson and find some sentences to support the main idea of each paragraph. 3. Work in groups and discuss some ways to protect animals. Write down your ideas. How to protect animals？ First, I think we must stop killing the rare birds and animals, especially the young ones. Second, we have to protect the environment, to make the sky blue, to make the grass green, to give the animals a comfortable space to live. It's not only for the animals but also ourselves. At last, we should tell more and more people why and how to protect the animals, make everyone do this. 拓展提升 1. At the beginning of the 20th century, the number of tigers in the wild was around 100 000. the number o ... ...
