人教版高中英语 Book2 unit 4 using langguage教学课件 (共27张PPT).ppt

1、 Reading&listening祥云县第一中学张艳琼Dinosaur is an animal that we can not see on the earth now.What we see in the museum are the fossils（化石）of many kinds of dinosaurs.Some dinosaurs have long necks and tails,while others look like birds.Before Readingwhat s this?Whats your impression of the dinosaur?Large/h

2、ugestrongcruelviolentfierce(adj.凶猛的；好斗的)dinosour fosssilHow much do you know about dinosaurs?Pterosaur翼龙Triceratops 三角龙Stegosaurus 剑龙tyrannosaurus 霸王龙kinds of dinosaursplant-eatersmeat-eaters disaster?climate changing?over hunting?What might be the reasons for their extinction?GussingFast R adingRea

3、ding1.When did dinosaurs live?2.When did dinosaurs disappear?They lived on the earth Tens of millions of years ago,long before humans came into being.Dinosaurs died out suddenly about 65 million years ago.Careful ReadingRead the passage carefully and finish the following tasks.1.There are many diffe

4、rent species of dinosaur and all of them have been found in China.2.Humans and other animals came into being on the earth soon after dinosaurs disappeared.all somesoonlong before3.Some scientists are sure dinosaurs died out because the earth got too hot for the dinosaurs to live on any more.4.Dinosa

5、urs died out quickly about 65 million years ago and many animals have died out in the same way.are surethink Have a try!Dinosaurs lived on the earth _ years ago.There were many different kinds of dinosaur and a number of them used to live in _.The _ of twenty-five species have been found in Henan Pr

6、ovince.Not long ago a(n)_ new speciesof bird-like dinosaur was discovered in Liaoning Province.Scientists found they could not only run like the others but also _ trees.tens of millions ofChinaeggsrareclimbThey _ suddenly about 65 million years ago.Nobody knows for sure why and _ dinosaurs disappear

7、ed 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 outhowThe dodolastfriendlyDiscussionQuestion:When and why did the dinosaur die out?too hot for them to live on the earthA huge rock hit the earth Any other

8、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 tothe birth rate fails to keep up with the death rate.The structure of Earth has changed where co

9、ntinents 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 ear

10、th.Listening：lets 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

11、,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.1.This story is about how foolish the dodo was.2.This story is about how the dodo became extinct.3.This story is about how t

12、he dodo and Men becamefriends.4.This 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 friends but only because man wanted to kill all the dodos as easily as possible.Number 4 is wrong because the other animals and

13、birds did not do much to save the dodo.They warned him but did not help him.Number 2 is correct.Number 1 is wrong.It is not fair to blame the dodo for his disappearance.Listen again and choose the correct answer to complete each sentence.1.The dodo is_.A.fierce B.unkind C.friendly D.foolish2.He want

14、s to believe that Man is telling the truth because _.A.Man is friendly B.he think Man is friendly C.he thinks the bears and monkeys lie D.Man is his best friend3.He didnt realize who had killed many of his friends until_.A Men told him the truthB the other birds told himC he saw how his friends was

15、being killed by MenD the monkey told himIf their habitat is threatened or they cannot find enough food,their numbers may decrease.As a result these endangered animals may even die out.In order to protect them,what can we do?Build more wildlife reserves.Making educational programs to tell people know

16、ledge about wildlife.Dont hunt wild animals or buy animal products.Wild animals need help!useful expressions in this period inspectincidenthitrecentlylong beforecome into being for sureaccording to so that depend onvt.检查；查看；视察n.事件；事变vt.击；打 n.击中adv.最近；新近很久以前；在以前很久开始存在；形成；发生确定；有把握的；无疑按照；根据；取决于以便；以致于；结果依靠；信赖；相信；指望；取决于Homework1.Finish writing the papers,then read and recite them to your partner.2.Find more information about dinosaurs and Dodo after class.