Step1 Presentation Show a picture of Amazon and ask “Do you know the river? What’s its name? How long is it? Can you tell me something about it? ”Help the students to answer: It’s the longest river in the world .its name is Amazon. It’s about 6,500 Kilometers long .Teach the new word “Amazon” In the same way, introduce these places “Qomolangma, the samara , the Caspian sea ” 利用图片教授知识,便于让学生理解接受, 降低..