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,*,*,*,Book3 Unit 4,Astronomy:the science of the stars,Reading,1,海王星,Neptune,水星,Mercury,金星,Venus,地球,Earth,火星,Mars,木星,Jupiter,土星,Saturn,天王星,Uranus,What we have learned?（知识回顾）,2,Pangu separates the sky from the earth,3,The Goddess Nuwa,mended,the heaven and created human beings,4,God created the world in seven days,5,Life first began in the sea on the earth.,6,Prediction（预测）,Read the title and predict what the passage is mainly about?,How _began on _,the earth,life,7,the writing style(体裁),2.,organization(段落结构),说明文 exposition,the,first,paragraph,main body,the,last,Paragraph,8,3.the writing sequence(写作顺序),timeline,4.topic sentence/,key words,supporting details,9,Reading.Scanning and Match,earth,(,globe/atmosphere,),human beings,plants and animals,theory,water,Para.1,Para.2,Para.3,Para.4,Para.5,the key words of each paragraph,10,Para3:,Para4:,How the_and its _appeared.,_ developed on the earth.,_ appeared on the earth and produced a _reaction.,Para5:,Para2,:,Para1,:,According to a widely accepted theory,the _began with a Big Bang.,_,clever animals with hands and feet appeared on the earth.,universe,earth,Water,atmosphere,Plants and animals,Human beings,chain,11,3.The earth became a solid globe/ball.,7.The earth was a cloud of dust.,8.,Water,appeared on the earth.,10.The universe began with a“Big Bang”.,P27,Timeline in Papagraph1-3,1,2.,3.,4,12,a cloud of dust,a solid globe,explode,atmosphere,water,13,Read aloud and group work(P4-5),Put the order into a timeline,P27 exercise2,Keys:,10 7 3 8,4 9 6 1 5 2 12 11,14,plants,shellfish(贝类)and other fish,insects,（昆虫）,amphibians,(两栖类,),plants,15,mammals,reptiles(爬行类),dinosaurs,Human being,16,Discourse markers（话语标记）,First,Next,later,After that,However,Finally,first,next,later,after that,however,finally,5.Small plants grew on the water.,6.Shellfish and other fish appeared.,7.Plants began to grow on dry land.,8.Insects and amphibians appeared.,9.Reptiles appeared.,10.Dinosaurs appeared.,11.Mammals appeared.,12.Clever animals with hands and,feet appeared.,17,Many millions of years later,the first,green,plants began to appear on the surface of the,water.,Next,green plants began to grow on land.,They were followed by insects and amphibians.,Later,When the plants grew into forests,reptiles,appeared for the first time.,After that,dinosaurs,developed.,However,they disappeared,and the mammals developed.,Finally,human beings appeared and spread all over the earth.,Retelling,18,Summary 本课小结,A.,New words:,theory/globe/violent/atmosphere/unlike/fundamental/harmful/chain/lay eggs/exit/mammal/give birth to/,B.,Reading skills：,1.organizaton,2.timeline,C.How life began on the earth.,(The evolution of life on the earth.),19,Homework,1.Read the passage.,2.Write down the retelling on your exercise book.,(80120words),20,Thank you!,21,