人教版高中英语高一必修3-Unit4-How-Life-Began-on-the-Earth-ppt课件

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,Each religion or culture has its own ideas about the beginning of the universe.,Each religion or culture ha,Pan Gu separated the sky from the earth,Pan Gu separated the sky from,God created the world,God created the world,人教版高中英语高一必修3-Unit4-How-Life-Began-on-the-Earth-ppt课件,a cloud of dust,violent surface,water,Big Bang,atmosphere,a globe,atoms,The development of the earth,a cloud of dustviolent surface,Para.1,Para.2,Para.3,A widely accepted theory about how,the universe was formed,The formation(,形成,)of the earth,The importance of water,for life,Main idea of paragraph 13,Para.1 A widely accepted the,How Life Began on the Earth,How Life Began on the Earth,人教版高中英语高一必修3-Unit4-How-Life-Began-on-the-Earth-ppt课件,mammal,lay eggs,man,insect,early plant,dinosaur,fish,amphibian,reptile,cell,mammallay eggsmaninsectearly p,人教版高中英语高一必修3-Unit4-How-Life-Began-on-the-Earth-ppt课件,Para.4,Para.5,The development of plants and animals,on the earth,Main idea of each paragraph,The arrival of humans,and their,impact on the earth,The development of plants and,water,green plants on land,2,3,4,How life began on the earth,5,6,7,8,forests,shellfish and all sorts of fish,insects(on land),amphibians(on land and in water),reptiles(on land),dinosaurs(on land),mammals(on land)small clever,animals with hands and feet,human,small plants in water,1,watergreen plants on land23How,Comprehensive questions,2.What are the differences between reptiles and mammals?,3.How did dinosaurs disappear?,Why is it wrong to show films with dinosaurs and humans together?,4.What problems are caused by human?,1.Why was the earth different from the other planets?,Comprehensive questions2.What,Comprehensive question,1.Why was the earth different from the other planets?,Because water appeared and remained on the earth constantly,which help dissolve harmful gases and acids and made it possible for life to develop.,Comprehensive question1.Why w,Comprehensive questions,2.What are the differences between reptiles and mammals?,Reptiles produced young by,laying eggs,;,Mammals,give birth to,young baby animals and produce milk to feed them.,cold-blooded VS.warm-blooded,Comprehensive questions2.What,Comprehensive questions,3.How did dinosaurs disappear?,The sudden disappearance of dinosaurs still,remains a mystery,.,Dinosaurs died out,long before,human beings developed on the earth.,Why is it wrong to show films with dinosaurs and humans together?,Comprehensive questions3.How,Comprehensive questions,4.What problems are caused by human beings?,Global warming,Greenhouse effect:too much carbon dioxide are put into the atmosphere,which,prevents,heat,from,escaping from the earth into space.,Comprehensive questions 4.Wha,Put them into a timeline,Insects and amphibians appeared.,The earth became a solid ball.,Reptiles appeared.,The earth was a cloud of dust.,Shellfish and other fish appeared.,Clever animals with hands and feet appeared.,Dinosaurs appeared.,Small plants grew on the water.,Plants began to grow on dry land.,Water appeared on the earth.,The universe began with a“Big Bang”.,Mammals appeared.,Put them into a timeline Insec,Help,Im sick!Im unhappy!,Help,Im sick!Im unhappy!,Human beings dont take care of the earth very well and the earth may become unfit to live on.What will happen to our planet?Whats the future of the Earth?,Now you are the earth,what will you say to the,human beings.,Group work,Human beings dont take care o,