(
课件网) Lesson 17: Save the Tigers Unit 3 Animals Are Our Friends 单词：century, courage, brave, reason, kill, cut, fur, symbol chain, balance, disappear, decrease 短语：at the beginning of…, drop to, food chain, in balance, in danger cut down, as well 句子：(1) Tigers are symbol of strength and courage. (2) It helps keep the number of other wild animals in balance. (3) For this reason, tigers are important to the environment. 学习并积累一些与老虎、生态环境、环境保护等相关的词汇和表达；能用英语谈论保护老虎的话题。 Learning Goals 1 2 Free Talk How many types of tigers do you know Where can you usually see a tiger Do you think tigers need our help Why or why not Presentation “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. It helps keep the number of other wild animals in balance. For this reason, tigers are important to the environment. Save the Tigers group works to protect the tigers . 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. New words century fur symbol courage brave chain n. 世纪 n. (兽类的)毛 n. 标志；象征 n. 勇气；胆量 adj. 勇敢的；无畏的 n. 链子；链条 balance reason disappear kill cut (cut/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 at the beginning of drop to food chain in balance cut down as well 在……之初 下降到；跌至 食物链 保持平衡 把……砍倒；减少 （除某事或某人外）还；也 Practice 选词填空。 (1) We _____ paper with scissors. (2) I’d like to know the _____ why you love your pet dog so much. (3) The plane flew higher and higher till it _____ in the sky. (4) The tiger is the symbol of _____. (5) The _____ man jumped into the cold river and save the boy. century; fur; brave; courage; chain; reason; disappear; cut; decrease cut reason disappeared courage brave Practice 选词填空。 (6) The number of the tigers in the wild quickly _____ these years. (7) Our life has become better in the 21st _____. (8) The _____ on the bear is dark brown. (9) The little girl wears a gold _____ around her wrist（手腕）. century; fur; brave; courage; chain; reason; disappear; cut; decrease decreases century fur chain Let’s do ... ...
