人教版高中英語必修三unit4-reading課件.ppt

thescienceofthestars Unit4Astronomy Astronomy Areyouinterestedin Step1 Aquizonastronomy 3 Earthistheonlyplanetmovingaroundthesun Part1 TrueorFalse Theearthmovesaroundthesun T F 2 Ittakestheearthonedaytomovearoundthesun 5 Thereisatmosphereonthemoon 4 Theearthistheonlyplanetinthesolarsystemwhichhaslivingcreatures ayear 8planets no F F T Mercury水星 Venus金星 Earth地球 Mars火星 Jupiter木星 Saturn土星 Uranus天王星 Neptune海王星 DoyouknowhowtheuniversebeganaccordingtoChineseculture InChina weallknowthatPanguseparatestheskyfromtheearth Let sbrainstormthefollowingquestions ChineseLegends 傳說 Panguseparatedtheskyfromtheearth Hiswholebodythenturnedintoallkindsofthingsintheuniverse 盤古開天辟地 2 Trytoputtherightorderofdevelopmentoflifeontheearth Ifyouwanttoknowmore pleaseturntoPage25 Lookattitleandthepictures Canyougetsomeinformationaboutwhatwewilllearnfromthetext Bigbang Theevolution development oflifeontheearth Thetextmaytellusthe oftheearthandthe oflifeonit Howlifebeginontheearth Pre reading Pre reading HowlifebeganontheEarth Fastreading Matchthemainideawitheachparagraph Para 1Theformation 形成 oftheearth Para 2Theimportanceofwaterforlife Para 3Awidelyacceptedtheoryabouttheformationoftheuniverse Para 4Thearrivalofhumansandtheirimpactontheearth Para 5Thedevelopmentofplantsandanimalsontheearth Carefulreading Taskone para1 WhatisthewidelyacceptedtheoryinPara1 Theuniversebeganwitha BigBang thatthrowmattersinalldirections acloudof BigBang asolid slowlycombine theearth down itexplodedloudlywith and theearth s dust ball globe firerock atmosphere cooled Howdidtheearthcomeintobeing 產(chǎn)生 Tasktwo para2 Whyiswatersoimportantforthebeginningoflife paragraph3 dissolveharmfulgasesandacidsintotheoceansandseas Becausewaterallowedtheearthto Whatlifedevelopedafterwaterappeared Paragraph4 smallplants greenplants forest earlyshellfishandallsortsoffish insectsandamphibians reptiles dinosaurs mammals About2 6millionyearsago Now Humansproducetoomuchcarbondioxide makingtheearthtoohottolivein Para5 Afterthecleveranimals humans becameimportantontheearth whathappened Answerquestion 1 2 3 4 5 6 7 Let scheckwhetherweputtherightorderatfirst Areyouright Taskthree Pleasereadthetextagain thenputtheorderofthesesentences exercise2 page27 Insectsandamphibiansappeared Theearthbecameasolidball Reptilesappeared Theearthwasacloudofdust Shellfishandotherfishappeared Cleveranimalswithhandsandfeetappeared Dinosaursappeared Smallplantsgrewonthewater Plantsbegantogrewontheearth Waterappearedontheearth Theuniversebeginwitha bigbang Mammalsappeared BigBang 4 5 3 8billion manymillionyearslater 2 6million Now Time Events BigBang dust solidglobe waterappears smallplants shellfishandfish plantsgrowontheland insectsandamphibians reptiles dinosaur mammals cleveranimals humans life earth Sumup Thetextmaytellusthe oftheearthandafter appear the oflifeoneafteranotheronit formation water development Inthelastparagraph weknowhumansfaceseriouslyglobalwarmingproblem whichisthreateningourexistence Canyouwritesomethingtocallonustoprotectourenvironment Discussion Theearthweliveinisbecomingmoreandmoreterrible sowemusttakemeasurestodealwithitFirstly Secondly Thirdly Wehopetheenvironmentwillbecomemoreandmorebeautiful Sample Theearthweliveinisbecomingmoreandmoreterrible sowemusttakemeasurestodealwithitFirstly thegovernmentshouldpasslawstopreventpeopleandfactoriesfrompollutingtheenvironment Secondly everyoneshouldrealizetheimportanceoftheproblemandtrytheirbesttoprotecttheenvironmentandfightagainstpollution Besides it sagoodideastoplanttr