第四单元waringupandreading1.ppt

Astronomy:thescienceofthestars,Unit4,Whatsubjectsdoyoulearnatschool?,ChinesemathematicsEnglishphysicschemistry,biologypoliticshistorygeography,physics,mathematics,chemistry,biology,geography,Sciencesubjects,astronomy,Astronomyisthescientificstudyoftheuniverseandtheheavenbodies(suchasthesun,themoon,andstars),gas,anddustwithinit.,WhatisAstronomy?,AQuizGame,Howoldistheearth?A.About3.5billionyearsB.About4.5billionyearsC.About5.5billionyearsD.About6.5billionyears,2._oftheearthsurfaceiscoveredbywater.A.20%B.30%C.50%D.70%,3.Whowrote“TheOriginofSpecies”(物种起源)?NewtonEinsteinCharlesDarwin,4.OnwhatdayistheEarthdaycelebrated?A.April22B.May4C.August21D.November11,5.HowmanyplanetsarethereintheSolarSystem?A7B8C9,地球_木星_火星_水星_海王星_,土星_天王星_金星_,Earth,Jupiter,Mars,Mercury,Neptune,Saturn,Uranus,Venus,Mercury水星,Venus金星,Earth,Mars火星,Jupiter木星,Saturn土星,Uranus天王星,Neptune海王星,Mercury,Venus,Earth,Mars,Jupiter,Uranus,Saturn,Neptune,Pluto,ScientistsnowthinkPlutoistoosmalltobecalledaplanet.,HowdidlifebeginonEarth?,Howwastheuniverseformed?,Pre-reading,Eachreligionandculturehasitsownideasabouthowlifebeganonearth.Whatdoyouknowaboutthelegends?,Godcreatedtheworld.,Panguseparatedtheskyfromtheearth.,Nvwamadehumans.,女娲补天,WordStudy,1.insects2.plants3.reptiles4.shellfish5.amphibians6.fish7.mammals,Studyofthegroupsoflife(种类/物种)Lookatthepicturesandtellthegroups.,plants,reptiles(爬行类),shellfish(贝类),fish,insects,mammals,amphibians(两栖类),HowLifeBeganonTheEarth,Reading,Readthepassagequicklytofindthemainideaofeachparagraph.,Paragraph1:AwidelyacceptedtheoryabouttheformationoftheuniverseParagraph2:TheformationoftheearthParagraph3:TheimportanceofwaterforlifeParagraph4:ThedevelopmentofplantsandanimalsontheearthParagraph5:Thearrivalofhumansandtheirimpactontheearth,DetailedReading,Thedevelopmentoftheearth,Readthefirst3paragraphsquicklyandfindoutwhatitismainlyabout.,Thistextcanmainlydividedintotwoparts.,(1)Whathappenedinthebeginning?,TheBigBang,(2)WhathappenedseveralbillionyearsaftertheBigBang?,acloudofdust,asolidball,explodedwithfireandrock,producedwatervapourandgases,(3)Whathappenednext?,(4)Whatdidthewatervapourandgasesform?,Theearthsatmosphere,Waterappeared.,(5)Whatappearedontheearthafteritcooleddown?,(6)Whatdidthewaterform?,oceansandseas,Thedevelopmentoflife,Readthelast2paragraphsquicklyandfindoutwhatitismainlyabout.,appearanceofsmallplantsinwater,Whatlifedevelopedafterwaterappeared?,earlyshellfish,Stage1.Thedevelopmentoflifeinwater,allsortsoffish,(2)Whatlifedevelopedinwaternext?,greenplantsonland,insectsonland,(3)Whatlifedevelopedafterthelifeinwater?,amphibiansonlandandinthewater,forests,Stage2:Thedevelopmentoflifeonland,(1)Whatlifedevelopednextonland?,reptilesonland,dinosaursonland,(2)Whatlifedevelopedafterforestsappeared?,mammalsonland,(3)Whatlifedevelopedafterdinosaurs?,smallcleveranimals,(4)Whatlifedevelopedaftermammals?,Summary,Theuniversebeganwitha“B_”.Theearthwasacloudofdust.Theearthbecameasolidballthenite_withfireandrock.Theyproducedcarbonandothergases,whichmadetheearthsa_.Whenitcooleddown,waterappearedonthes_.Thensmallgreenp_grewonthewater,andlatershellfishandotherfishappeared.,igBang,xploded,tmosphere,urface,lants,Summary,Whenplantsbegantogrowondryland,insectsanda_appeared.Forestsappearedbeforer_appeared.Theyproducedyoungbyl_eggs.Thend_appearedinforests.Thedisappearanceofdinosaursmadether