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1、人教课标 高一 必修 2 Unit 4,ANIMAL EXTINCTION,Dinosaur is an animal that we can not see on the earth now. What we see in the museum are the fossils of many kinds of dinosaurs. Some dinosaurs have long necks and tails, while others look like birds.,Enjoy the video,1. When did dinosaurs live? Tens of millions
2、 of years ago. 2. When did dinosaurs die out? About 65 million years ago.,Read the text carefully and fill in the blanks.,China,eggs,rare,climb,last,died out,how,The dodo,The dodo,There are many different species of dinosaur and all of them have been found in China. Not long ago, a rare new species
3、of bird-like dinosaur was discovered in Henan Province.,several,Liaoning,3. Some scientists are sure dinosaurs died out because the earth got too hot for the dinosaurs to live on any more. 4. Dinosaurs died out quickly about 65 million years ago and many animals have died out in the same way.,think,
4、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.,dodo,渡渡鸟,Dodo鸟是一种不会飞的鸟，仅产于毛里求斯。拥有肥胖的身子和巨大的嘴。 16世纪后期，欧洲殖民者来到了毛里求斯。不会飞又跑不快的Dodo鸟很快成为欧洲人来到岛上后主要的食物来源
5、。人们开始大量的滥捕滥杀可怜的Dodo鸟，有时每天可以捕杀到几千只到上万只。 由于过度的捕杀，很快岛上Dodo鸟变得越来越少。1681年，最后一只Dodo鸟被残忍的杀害后，从此，地球上再也见不到这种东西了，除非是在博物馆的图片中。,Listen to the tape and choose the sentence which gives the main idea of the story. Say what is wrong with the other three.,This story is about how foolish the dodo was. 2. This story i
6、s about how the dodo became extinct. 3. This story is about how the dodo and Man became friends. 4. This story is about how the other birds and animals tried to save the dodo.,Number 2 is correct. Number 1 is wrong. It is not fair to blame the dodo for his disappearance.,Number 3 only explains half
7、the story. The dodo and man did become friends but only because man wanted to kill all the dodos as easily as possible. Number 4 is wrong because the other animals and birds did not do much to save the dodo. They warned him but did not help him.,Listen to the tape and choose the correct answer to co
8、mplete each sentence.,1. The dodo is_. A. fierce B. unkind C. friendly D. foolish,2. He wants to believe that Man is telling the truth because _. A. Man is friendly B. he thinks Man is friendly C. he thinks the bears and monkeys lie D. Man is his best friend,3. He didnt realize who had killed many o
9、f his friends until _. A. Man told him the truth B. the other birds told him C. he saw how his friend was being killed by Man D. the monkeys told him,fierce adj. 凶猛的, 好斗的 The house is guarded by a fierce dog. 激烈的, 猛烈的 What he said met with fierce opposition. 他的话语遭到激烈反对。 酷烈的 This heat is really fierc
10、e. 这样的高温真叫人难受。,In pairs choose another endangered animal which you know about. Analyse why this animal is endangered.,* Is it being hunted and killed? * Does it not have enough food? * Is it because its habitat is being threatened?,Intention,Purpose,Im going to,to help/save,I intend/ mean / plan to,
11、to protectfrom,I will,so that,Discuss what you might do to save it. These phrase may be useful to you.,Id rather not,Id like to,Im ready to,I feel like,in order to,but do,to teach them a lesson.,to punish those who do harm to wildlife.,They lived on the earth tens of millions of years ago, long befo
12、re humans came into being and their future seemed secure at that time. 本句是一个由and连接的并列句，其中，long before 引导时间状语从句，进一步解释说明tens of millions of years ago，意为“在之前很久”。注意：before long 意为“不久以后”。,e.g. I knew Tom long before I knew you. 我在认识你之前很久就认识汤姆了。 We hope to finish our experiment before long. 我们希望不久就把实验做完。,
13、It _ long before we _ the result of the experiment. A. will not be; will know B. is; will know C. will not be; know D. is; know,on the earth在地球上。在earth, sun, moon等表达世界上独一无二的名词 前, 要加the。 come into being的意思是“开始存在; 发生”。 e.g. 我们不知道这世界是什么时候存在的。 We dont know when the world came into being.,2. When scienti
14、sts inspected the bones, they were surprised to find that these dinosaurs could not only run like the others but also climb trees. 本句中的to find that .是不定式作原因状语。不定式用来表原因时，常修饰表示情感、心理状态、性格等的形容词，如：,happy, glad, lucky, fortunate, surprised, angry, anxious, cruel, clever, frightened, shocked, sorry, eager,
15、 proud, disappointed, foolish, impatient, unwise, naughty等。如：,We were surprised to see him. 我们真想不到会见到他。 We are proud to be young people of new China. 作为新中国的青年，我们感到很骄傲。 You were foolish to act like that. 你那样做很愚蠢。,3. Some scientists think it came after an unexpected incident when a huge rock from spac
16、e hit the earth and put too much dust into the air. 本句中when引导定语从句，其先行词为incident。关系副词when的先行词一般是表时间的名词，如: He came last night when I was out. 但有时并不直接是表时间的名词，如：,In 1921 Einstein won the Nobel Prize, and was honored in Germany until the rise of Nazism when he was driven from Germany because he was a Jew. 1921年爱因斯坦获得了诺贝尔奖，他在德国很受尊敬。纳粹上台后由于他是犹太人而被赶出了德国。,4. According to a UN report, . according to 根据, 据说 e.g. According to Joh
