高中英语【人教版】必修二：Unit4-Wildlife-protection-using-language课件.ppt

Language points1.They lived on the earth tens of millions of years ago,long before humans came into being.千百万年前，早在人类产生之前，它们就生活在地球上。1)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。2)come into being 的意思是“开始存在;发生”。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.3)long before“早在之前很久”。It will(not)be long before+从句(不久后将会.)从句用一般现在时或一般过去时,主句用一般将来时或一般过去将来时。Ex.It _ long before we_ the resultof the experiment.A.will not be;will know B.is;will knowC.will not be;know D.is;know拓展：before long 不久以后2.They could tell this from the way the bones were joined together.他们能够从它们骨头的结合方式上识别出这点。tell 意思为“辨别，识别”(常与from 连用)有时很难把双胞胎区分开。It is sometimes hard to tell one twin from the other.1.When did dinosaurs live?Tens of millions of years ago.2.When did dinosaurs die out?About 65 million years ago.Using languageReading 3.How did dinosaurs die out?A large rock hit the earth and put too much dust into the air.The earth got too hot to live on.1.There are many different species of dinosaur and all of them have been found in China.2.Not long ago,a rare new species of bird-like dinosaur was discovered in Henan Province.Liaoning severalTrue or false True or false 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.think1.Listen to the tape and choose the correct answer to complete each sentence.P30 4 1.C 2.B 3.C 2.Which is the best for describing what happened?P30 3 2 is correct.Listening Listening text Once upon a time,I lived on the island of Mauritius.I was called“dodo”.There were many of us and we were friends with all the other animals on this island.One day a new animal came to my island.His name is Man,and at first we seemed to be good friends.We went everywhere together and I shared my food with him.However,I began to wonder why several of my dodo friends had disappeared.Then the number of our species began to decrease quickly.I was so worried that I asked the other animals and they all told me,“your friends are being killed and eaten by Man while you are hunting for food.”Had Man eaten them?I couldnt believe it!When I asked Man directly,he seemed surprised.“I havent seen the other dodos either.”he said.“Maybe someone else killed them.”I believe him but when more dodos disappeared I set a trap.I went off as if I was going to hunt but instead I hid in the foreat and waited.Sure enough Man came along.He ran after the last of my dodo friends and killed her.I felt so angry that I rushed out of my hiding place and straight at Mans spear.He killed me too.After that there were no more dodos in the world.So my motto is:be careful who you trust.Speaking Imagine you are with the dodo and you try to help it.Talk in pairs about what you might do.These phrases might be useful to you.Imagine you are with the dodo and you try to help it.Talk in pairs about what you might do.These phrases might be useful to you.IntentionPurposeIm going tohelp the dodoI intend/mean/plan to hide it in a caveI will trap man as he kills a dodoI feel likeattacking man myselfId like toput man in a cageIm ready toteach man how to be friendsI would rather not tell you what I think of manWriting Now write a letter to the dodo to tell him how you will help him.How to protect the dodo from man build a trap to catch manResult:man will not want to attack the dodo any more.help him by attacking man so he will leave the dodo alone How to protect the do from man go to another island hide the dodo Result:dodos will live a calm and peaceful life.How to teach man to hunt another animal give man a meal of fried fish encourage him to join you on a fishing expeditionResult:man will leave dodos alone.Dear Dodo,I am writing to you because I have heard of your problems.I know man is trying to kill all the dodos and I want to help you.Here are my ideas.Sample letter to the dodo:First,I would like to come and attack them for you so that they will leave you alone.I want to build a trap and catch them and put them in a cage.Then they will not feel like killing any dodos again.Second,I wish I could take you away to another island where you will be happy and peaceful.I wish I were with you now.Good luck till I come.Yours sincerely,Xiao Hua