2019-2020年人教版高中英語必修2 Unit 4 Wildlife protection period 4 教案1.doc

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2019-2020年人教版高中英語必修2 Unit 4 Wildlife protection period 4 教案1 (ABOUT DINOSAURS) Aims To read and listen about dinosaurs To speak about helping the dodo To write to the dodo Procedures I. Warming up by reading to the tape Let’s warm up by reading aloud to the recording of the text ABOUT DINOSAURS on page 30. II. Listening about DINOSAURS Now I’d like to tell you something about DINOSAURS ■In formation about Dinosaur Dinosaur means terrible lizard in Latin. They were called that because people used to think dinosaurs were lizards, but they were not. Dinosaurs first appeared about 200 million years ago. 65 million years ago, many kinds of dinosaurs became extinct. Birds are a special type of dinosaur and they were the only kind to live until today. There were many kinds of dinosaurs. Some ate plants and some ate meat. The largest dinosaurs were plant-eaters like apatosaurus and brachiosaurus. They were the largest animals to ever walk on dry land. Other plant-eaters had special weapons to help them fight off the meat-eaters. For example, triceratops had three horns on its face, ankylosaurus was covered in boney plates, and stegosaurus had spikes on its tail. The meat-eaters all ran around on their back legs like people do. Some were very large, like tyrannosaurus, and some were small, like psognathus. It was the smaller sized meat-eaters that evolved into birds. One of the first birds was archaeopteryx, but it looked half like a dinosaur. There were large flying reptiles that lived at the same time as dinosaurs called pterosaurs, but they were not closely related to dinosaurs. There were also many kinds of large reptiles that could swim, like ichthyosaurs and pleisiosaurs, but they weren’t closely related to dinosaurs either. III. Reading and copying Next we shall go back to the text ABOUT DINOSAURS on page 30 again to read it and copy down all the expressions into your notebook. Useful phrases from ABOUT DINOSAURS During the history of the earth, live on the earth, tens of millions of years ago, came into being, eggs of five species, a rare new species, a bird-like dinosaur, climb tree, tell…from…, die out, hit the earth, put…into the air, get hot, live on, know for sure, in the same way, listen to the story about…, disappear from… IV. Reading to answer questions Read the questions in the table below and scan the text to answer them. When did dinosaurs live on earth? When did dinosaurs die out? How did dinosaurs die out? V. Listening about the dodo Have you ever heard of the dodo, an animal that has also disappeared from the earth? The Mauritius Dodo (Raphus cucullatus, called Didus ineptus by Linnaeus), more monly just Dodo, was a metre-high flightless bird of the island of Mauritius. The Dodo, which is now extinct, lived on fruit and nested on the ground. Next we are going to listen to the tape and do exercises 1 and 2 on page 30 on dodo. VI. Speaking in pairs about helping the dodo Zhao Yannan: The Dodo was driven to extinction by sailors when they discovered the island of Maritius in the 17th century. It is one of the first documented human induced extinctions. Zhao Yanfei: What a pity that we can not find any dodo now. Imagine we are with the dodo, Yannan, what could we do to help it? Zhao Yannan: Then I would intend to hide it in a cave, so that sailors could not find it. Zhao Yanfei: If I were there, I would try to trap them as they were catching and killing the dodo. Putting man who is harmful to the dodo in a cage and attacking him is the best way to protect and save the dodo. Zhao Yannan: I’d like to and I’m ready to, teach man how to be friends with animals, including the dodo. The man and the dodo can be living side by side on the earth. They can be happy together. ZhaoYanfei: I would rather not tell you what I think of man. He is selfish and cruel. He cares only for himself and that is why so many animals have disappeared from this earth. Putting the bad men in a cage is the only way out, I am sure. VII. Closing down by writing to the dodo All right now, boys and girls, to end this period next you are to write a letter or an email to the dodo telling him what you are going to do to save him. By 1681, the last dodo died, and the species became extinct. After hundreds of years, no one recalled what a dodo bird was, and it was regarded as a myth invented by imaginative sailors. It wasn’t until the 1900’s when the bones were found that the dodo was believed to be real. Today, the dodo bird is a symbol of the harm humans can bring to other living things if we are irresponsible.