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disappear; kill; cut; decrease
2.掌握短语及句型：at the beginning of; the number of; at the top of; keep…in balance; be in danger of…; cut down; as well; drop to; food chain; be important to; in recent years
Skills: 通过本课学习，能通过自学找出一段文字的中心句，并能与同伴用英语简单交流对保护动物的观点与看法。
Emotion: 树立同学们的环保意识。保护环境，爱护动物，人人有责。
Where do you usually see a tiger?
Presentation
in a zoo?
in the wild?
There are mainly six kinds of tigers:
the Bengal tiger (孟加拉虎),
the Siberian tiger （西伯利亚虎）,
the Sumatran tiger （苏门答腊虎）,
the Malayan tiger （马来亚虎）,
the Indochinese tiger （印度支那虎）,
the South China tiger(华南虎).
Learning Tip
brave
strong
fierce
the king of the forest
Presentation
What do you think of tigers?
[bre?v] adj. 勇敢的，无畏的
['s?mb(?)l] n. 标志，象征
['k?r?d?] n. 勇气，胆量
They are symbols of strength and courage.
Tigers are at the top of the food chain.
food chain 食物链
Presentation
Tigers help keep other wild animals in balance.(使…保持平衡)