河北省辛集三中高中英语 unit4 Period 3 Comprehending教案 新人教版必修2(1).doc

period 3 comprehendingteaching aims:1. this section deals with understanding of the reading.2. the students will need to be able to understand the reading.3. work out the answers from what they read. teaching important points:1. why we need wildlife protection2. a good example of wildlife protection3. what we can get from wildlife protection teaching procedure:step1.warming up by reading to the tapelets warm up by reading aloud to the recording of the text about dinosaur on page 30.step2.listening about dinosaursnow id like to tell you something about dinosaurs in formation about dinosaurstep3. 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 compsognathus. 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 werent closely related to dinosaurs either.step4: 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 dinosaursduring 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, tellfrom, die out, hit the earth, putinto the air, get hot, live on, know for sure, in the same way, listen to the story about, disappear from 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?step5: listening about the dodohave 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 commonly 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 dodothe teacher should explain the content of the passage to the students.vii. closing down by writing to the dodoall 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 wasnt until