文档介绍：Unit 4 Wildlife protection
Reading & listening
Dinosaur is an animal that we can not see on the earth now. What wws for sure why and _____ dinosaurs disappeared from the earth.
_____________ is one of the animals that have died out in the _____ 500 years.
It lived on the Island of Mauritius and was a very________ animal.
died out
how
The dodo
last
friendly
Discussion
Question: When and why did the dinosaur die out?
too hot for them to live on the earth
A huge rock hit the earth
Any other possible reasons?
Volcanoes were active during this period of time, and could have also killed the dinosaurs.
Dinosaurs need a lot of food everyday, they hunt other dinosaurs for food; too much hunting leads to
the birth rate fails to keep up with the death rate.
The structure of Earth has changed where continents had moved, major ridge expansion took place, and land has sunken under sea or risen above water.
Dinosaurs died out quickly about 65
million years ago and many animals
have died out in the same way. The dodo
is one of them. Please listen to a story of
the dodo and how it disappeared from
the earth.
Listening：let's learn first.
渡渡鸟是一种不会飞的鸟, 仅产于非洲的岛国毛里求斯。
肥大的体型总是使它步履蹒跚, 再加上一张大大的嘴巴,
使它的样子显得有些丑陋。幸好岛上没有它们的天敌,
因此, 它们安逸地在树林中建窝孵卵, 繁殖后代。
16世纪后期,带着来复枪和猎犬的欧洲人来到了毛里求斯。
不会飞又跑不快的渡渡鸟厄运降临了。欧洲人来到岛上
后, 渡渡鸟就成了他们主要的食物来源。从这以后,
枪打狗咬, 鸟飞蛋打, 大量的渡渡鸟被捕杀。就连幼鸟
和蛋也不能幸免。开始时,欧洲人每天可以捕杀到几千
只到上万只渡渡鸟,可是由于过度的捕杀, 很快他们每
天捕杀的数量越来越少, 有时每天只能打到几只了。
1681年, 最后一只渡渡鸟被残忍的杀害了, 从此,
地球上再也见不到渡渡鸟了, 除非是在博物馆的
标本室和画家的图画中。
Ex3:Listen to the tape and choose the sentence which gives the main idea of the story. Say what is wrong with the other three.
story is about how foolish the
dodo was .
story is about how the dodo
became extinct.
story is about how the dodo and Men becamefriends.
story is about how the other
birds and animals tried to save the dodo.
Number 3 only explain half the story. The dodo and man did become