单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 4 Astronomy,Unit 4 Astronomy,Twinkle,Twinkle Little Star,Twinkle twinkle little star,How I wonder what you are,Up above the world so high,Like a diamond in the sky,Twinkle twinkle little star,How I wonder what you are,When the blazing sun is gone,When he nothing shines upon,Then you show your little light,Twinkle twinkle all the night,Twinkle twinkle little star,How I wonder what you are,Twinkle Twinkle Little StarTwi,Warming-up,2.What words will you think of when we talk about astronomy?,stars,moon,sun,planet,the solar system,the Milky Way Galaxy(,星系,),earth,1.Whats the meaning of the word“Astronomy”?,the science of stars,Warming-up 2.What words will y,人教高中英语必修3Unit4-Warming-up课件,sun,earth,the solar system,the Milky Way Galaxy,Galaxy 1,Galaxy 2,Galaxy,the Universe,sunearththe solar systemthe Mi,the origin of the universe in different religions and cultures,separated the sky from the earth.,made humans.,Pan Gu,Nvwa,_ created the world in 7 days.,God,the origin of the universe in,In this unit,well learn something more scientific.,Pre-reading,How life began on the earth?,In this unit,well learn some,Reading,Read the passage quickly and find the main idea.,The text is mainly about,the solar system,the earth,s problems,the difference between the earth and other planets,the development of earth and life on the earth,ReadingRead the passage quickl,Reading,Part 1:The development of the earth,Part 2:The development of life,(para 13),(para 45),ReadingPart 1:The developmen,(2)What happened to the earth after the“Big Bang?,Read para.1-3,(3)What appeared as the earth cooled down?,(1)How did the universe come into being?,(2)What happened to the earth,(1)How did the universe form?,-According to a widely accepted theory,the universe began with a“”It threw,in all directions.,After that began to form and combine to create stars and other bodies.,matter,Big Bang,atoms,(1)How did the universe form?-,(2)What happened after the“Big Bang?,The earth was just a cloud of dust,The earth become a solid ball quickly.,The earth atmosphere appeared.,Water stayed on the moon.,Read para.1-3,Between 4.5 and 3.8 billion years ago,the dust settled into,.,a solid globe,(2)What happened after the“,was a cloud of dust,settled into a,solid,ball,exploded with fire&rock,produced CO,2,N,2,H,2,O and,other gases),atmosphere,water appeared,(3)What appeared as the earth cooled down?,was a cloud of dustatmospherew,Water is fundamental to the,beginning of life on earth.,Why?,Because water allowed the earth to,dissolve,harmful gases,and,acids,into oceans and seas.,chain reaction,bagan to develop.,Life,Water is fundamental to the Wh,1 Insects and amphibians appeared.,2 Reptiles appeared.,3 Shellfish and other fish appeared.,4 Clever animals with hands and feet appeared.,5 Dinosaurs appeared.,6 Small plants grew on the surface of water.,7 Green plants began to grow on dry land.,8 Water appeared on the earth.,9 Mammals appeared.,The author uses some words to organize them,e.g.“Next”.Can you find some more in Para 4&5?,Put the order of development of life into a timeline.,Paragraph 4&5,5,6,3,9,7,2,4,1,8,1 Insects and amphibians appea,1.Who are the small clever animals with hands and feet?,2.Are they taking care of the earth well?Why?,1.Who are the small clever ani,Humans are putting too much,carbon dioxide,into the,atmosphere,which,prevents,heat,from,escaping,from the earth into space.,The earth may become too hot to live on.,Humans are putting too much ca,Discussion,What can we do to prevent the earth from becoming hotter and hotter?,clean energy,plant trees,recycle rubbish,use public transport,Discussion What can we do to,Whether life will continue on the earth depends on,human beings,.,Whether life will continue on,1.The earth appeared before the Big Bang happened.,2.The original atmosphere consisted of nitrogen and oxygen.,3.The main difference between the earth and other planets is that there is water on the earth.,4.Life began in water and then on land.,F,F,T,T,True(T)or False(F),1.The earth appeared before t,5.Mammals appeared before the development of dinosaurs.,6.Dinosaurs could give birth to young baby animals and produced milk to feed them.,7.Human beings produce too much carbon dioxide which causes the global warming on the earth.,8.According to the text,human beings would disappear in the end,.,F,F,T,F,True(T)or False(F),True(T)or False(F),5.Mammals appeared before the,Homework,Write a passage about what we can do to prevent the global warming.,2.Find out the difficult sentences that you want to learn about.,HomeworkWrite a passage abou,The End,Thank,you,The EndThank,