B2U4AnimalExtinction公开课课件.ppt

words and expressionsextinction 灭绝，灭亡tens of millions of 数千万secure 安全的come into being 产生，形成dinosaur 恐龙inspect 检查，视察incident 事件，事变according to 根据，依据set a trap 设陷阱，设圈套Look at these pictures and answer questions:Look at these pictures and answer questions:They _a long time ago.They _a long time ago.disappeareddisappeared/died out/died outwhywhy,how and when,how and whenQ1:What are they?Q1:What are they?Q2:What happened to them?Q2:What happened to them?They are They are _._.dinosaursdinosaursAnimal Extinction1 When did the dinosaurs live?1 When did the dinosaurs live?Read the text,and answer questions.Read the text,and answer questions.Tens of millions of years ago,long before humans Tens of millions of years ago,long before humans came into beingcame into being.They died out suddenly about 65 million years ago.They died out suddenly about 65 million years ago.2 When did the dinosaurs disappear?2 When did the dinosaurs disappear?3.What are the special characters of the new 3.What are the special characters of the new speciesspecies of of dinosaurs?How did the scientists dinosaurs?How did the scientists knowknow that?that?They are bird-like They are bird-like dinosaurs.Theydinosaurs.They can not only run like the others can not only run like the others but also climb trees.but also climb trees.The scientistsThe scientists learned this from the way the learned this from the way the bones were joined together.bones were joined together.Why dinosaurs died out suddenly?1.What are the scientists opinions?2.What is your idea on the extinction of dinosaurs?Dinosaurs lived on the earth _ human _ and their future seemed _ at that time.There were many different kinds of dinosaurs and a number of them _ live in China.Not long ago,scientists _ the bones of a rare new species in Liaoningand they were _ to find that the species can both run and climb trees.Dinosaurs _ suddenly about 65 millions years ago._ _some scientists,it came after an _ _,while others think the earth got _ hot for them to live on any more,but nobody knows _ why and how they _.beforecame into beingsecureused toinspectedsurpriseddied outunexpectedincidenttoofor suredisappearedAccording toThe Story of the DodoWho killed Dodo?_,I live on the Island of Mauritius.We went _ and I _ food with Man.However,I began to wonder why several of my dodo friends _.I believed him but when more dodos _ I set a trap.My mottoListen and fill in the blanks:Once upon a time everywhere together sharedhad disappeared disappeared Be careful who you trust Tibetan antelope藏羚羊藏羚羊Official Mascots（吉祥物）吉祥物）of the Beijing 2008 Olympic GamesWhat do you think of those poachers（偷猎者）偷猎者）action?In the 1980s and 1990s,some 20,000 Tibetan Antelopes were killed by smugglers（走私走私者）者）each year to get the animals valuable hair for shawls（披巾）披巾）.A shawl of that kind can be sold for as much as 30,000 US dollars.panda white flag dolphin South China tiger milu deerWhat can you do to help them?What can we do to help the animals?Slogan(口号):No buying,no killing!Homework:Use the words and expressions to fill in the blanks on the paper.