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,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,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,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:,The Science of the Stars,UNIT 4 Astronomy:,1,A,puzzle,.Lead-in,?,Which came first,egg or chicken?,A puzzle.Lead-in?Whic,2,A puzzle,How,Life,Began,on,the,Earth,A puzzle,3,1.How many,planet,s are there in,the solar system,?,A.6 B.7 C.8,.A Quiz,(,太阳系,),(,行星,),1.How many planets are there,4,The Solar system,eight,planets 行星,The Solar system eight planet,5,土星,Saturn,天王星,Uranus,金星,Venus,地球,Earth,火星,Mars,水星,Mercury,木星,Jupiter,海王星,Neptune,土星 天王星金星地球火星水星木星海王星,6,2,.How old is the earth?,A.About 3.5,billion,years,B.About 4.5,billion,years,C.About 5.5,billion,years,(,十亿,),2.How old is the earth?(十亿),7,What/Who created the world,according to a scientific,theory,?,A.Pan gu and Nv wa,B.God,C.The Big Bang,(,科学理论,),What/Who created the world,8,4.Which kind of animals do not,lay eggs,?,A.amphibians,B.mammals,C.reptiles,两栖类,哺乳类,爬行类,(,下蛋,),4.Which kind of animals do,9,5.Which kind of animals do not,exist,now?,A.shellfish,B.dinosaur,C.Penguin,(,存在，生存,),5.Which kind of animals do n,10,6.Whose nationality is,unlike,the others?,A.B.C.,Isaac Newton Albert Einstein Stephen Hawking,(,不像,),6.Whose nationality is unlik,11,7.Stephen Hawking is a/an _.,A.biologist,B.physicist,C.astronomer,(,天文学家,),(,生物学家,),7.Stephen Hawking is a/an,12,.,What are they?,1.plants,2.Shellfish,(,贝类,),3.fish,4.insects (,昆虫类,),5.amphibians,(,两栖类,),6.reptiles (,爬行类,),7.mammals (,哺乳类,),Study of the groups of life(,生命的种类,/,物种,),Look at the pictures and tell the groups.,.What are they?1.pl,13,1.plants,2.Shellfish,(,贝类,),3.fish,4.insects (,昆虫类,),5.amphibians,(,两栖类,),6.reptiles (,爬行类,),7.mammals (,哺乳类,),Study of the groups of life(,生命的种类,/,物种,),1.plantsStudy of the groups,14,1.plants,2.Shellfish,(,贝类,),3.fish,4.insects (,昆虫类,),5.amphibians,(,两栖类,),6.reptiles (,爬行类,),7.mammals (,哺乳类,),Study of the groups of life(,生命的种类,/,物种,),1.plantsStudy of the groups,15,1.plants,2.Shellfish,(,贝类,),3.fish,4.insects (,昆虫类,),5.amphibians,(,两栖类,),6.reptiles (,爬行类,),7.mammals (,哺乳类,),Study of the groups of life(,生命的种类,/,物种,),1.plantsStudy of the groups,16,1.plants,2.Shellfish,(,贝类,),3.fish,4.insects (,昆虫类,),5.amphibians,(,两栖类,),6.reptiles (,爬行类,),7.mammals (,哺乳类,),Study of the groups of life(,生命的种类,/,物种,),1.plantsStudy of the groups,17,1.plants,2.Shellfish,(,贝类,),3.fish,4.insects (,昆虫类,),5.amphibians,(,两栖类,),6.reptiles (,爬行类,),7.mammals (,哺乳类,),Study of the groups of life(,生命的种类,/,物种,),1.plantsStudy of the groups,18,1.plants,2.Shellfish,(,贝类,),3.fish,4.insects (,昆虫类,),5.amphibians,(,两栖类,),6.reptiles (,爬行类,),7.mammals (,哺乳类,),Study of the groups of life(,生命的种类,/,物种,),1.plantsStudy of the groups,19,1.plants,2.Shellfish,(,贝类,),3.fish,4.insects (,昆虫类,),5.amphibians,(,两栖类,),6.reptiles (,爬行类,),7.mammals (,哺乳类,),Study of the groups of life(,生命的种类,/,物种,),1.plantsStudy of the groups,20,1.plants,2.Shellfish,(,贝类,),3.fish,4.insects (,昆虫类,),5.amphibians,(,两栖类,),6.reptiles (,爬行类,),7.mammals (,哺乳类,),Study of the groups of life(,生命的种类,/,物种,),1.plantsStudy of the groups,21,.,Listening&,Viewing,How life began on the earth,1,.Watch for the general idea,2.,Listen carefully for the details,(Task 1),(Task 2),Watch the video:,.Listening&ViewingHow lif,22,How,Life,Began,on,the,Earth,Watch the video:,How Life BeganWatch the vide,23,人教版高中英语高三必修3-UNIT4-Astronomy课件,24,Task 1:a timeline,1.,Insects and,amphibians,appeared.,2.,Dinosaurs,appeared.,3,.,The,earth became a solid ball.,4.Small plants grew on the water.,5,.,Reptiles,appeared.,6.Plants began to grow on dry land,.,7,.,The,earth was a cloud of dust,8.Water appeared on the earth,9,.,Shellfish,and other fish appeared.,10.The universe began with a“Big Bang”.,11,.Clever animals with hands and feet,appeared,12.,Mammals,appeared.,Put,the order of development of life into a time,line.,Ex.2 on P27,Task 1:a timeline1.Inse,25,1.,Insects and,amphibians,appeared.,2.,Dinosaurs,appeared.,3,.,The,earth became a solid ball.,4.Small plants grew on the water.,5,.,Reptiles,appeared.,6.Plants began to grow on dry land.,7,.,The,earth was a cloud of dust,8.Water appeared on the earth,9,.,Shellfish,and other fish appeared.,10.The universe began with a“Big Bang”.,11,.Clever animals with hands and feet,appeared,12.,Mammals,appeared.,Can you put the order of development of life into a time line?,8,10,3,5,9,7,4,2,1,6,11,12,1.Insects and amphibians app,26,Task 2:fill in the blanks,Fill in the blanks according to the video,For several _ years after the“Big Bang”,the earth was just a _ _ _.Between 4.5 and 3.8 billion years ago when the dust settled into a solid _.The earth _ loudly with fire and rocks.They were,_ _,to produce carbon,nitrogen,water vapour and other gases,which were to make the earths _.Then,as the earth _ down,water began to _ on its surface.,atmosphere,globe,cloud of dust,billion,exploded,cooled,appear,in time,Task 2:fill in the blanks,27,Many millions of years later,small _ began to appe