河南省洛阳市下峪镇初级中学九年级英语上册 Unit 4 Topic 3 Section C教学课件 牛津版.ppt

unit4amazingscience,sectionc,topic3idontthinkalienscanbefoundinspace.,howbeautifulandlivelytheearthis!,isitouronlyhome?talkaboutyourideas.,pre-readingquestions,1.whatdoesmarslooklike?,2.whydopeopleexploremars?,3.howmuchoxygendoestheaironmarshave?,solarsystem,marsisthefourthplanetfromthesuninoursolarsystemandisnamedaftermars,theromangodofwar.,acircleisdividedintotwohalvesbydiameter.,romanadj.古罗马的，罗马帝国的n.古罗马人，罗马人,1.doinromeastheromansdo.2.allroadsleadtorome.,storm暴风(雨),butduringspringandsummer,strongstormscancoverthewholesurfaceofmars.,searchv.n.搜索，搜查theysearchedthewoodsforthelostchild.辨析：search,searchfor敌人在村子里找那个红军。误：theenemysearchedtheredarmymaninthevillage.正：theenemysearchedthevillagefortheredarmyman.注：search的宾语一般是人或物，比较一下:theysearchedhim.他们搜查他（搜身）。theysearchedforhim.他们寻找他。,importantpoints:,itisreportedthat据报道(悉、传说）itissaidthat据说itisknownthat众所周知itisgivenoutthat据称,1areadandunderstand录音,1bworkalone,diameter:_color:_shape:_climate:_gravity:_distancefromthesun:_,read1aagainandwritedowntheinformationaboutmars.,itis53%aswideasthatoftheearth.,itisredandorange.,itlookslikeaball.,duringspringandsummer,strongstormscancoverthewholesurfaceofmars.thetemperatureisbetween-138and28.,itisabouttwo-fifthsasstrongasitisonearth.,marsgoesaroundthesun,atadistanceofabout228millionkilometers.,readkeysentencesandlearn.,1.itsdiameteris53%aswideasthatoftheearth.,2.thegravityonthesurfaeofmarsisabouttwo-fifthsasstrongasitisonearth.,3.thepopulationofthiscityistwiceaslargeasthatcity.,“是的百分之几/几分之几/几倍”,专家小提示：twofifthsasstrongas相当于的五分之二强度twofifths=twofifthshalfasbigas像一半那样大twiceaslongas像两倍那样长,discussingroups.,1.ifyourweightontheearthis56kilos,howmuchwillyouweighonmars?,2.ifyoucanjump1.76metershighontheearth,howhighcanyoudoonmars?,afterreading,weallknowthatapersonwhoweighs90kilosontheearthweighsonly36kilosonmars.nowletsdiscussthefollowingquestions.,36/90*56=22.4,90/36*1.76=4.4,dryv.使干，弄干，擦干adj.干的，干燥的,dry,wet,短语：dryair干燥空气keepdry!请勿受潮！thedryseason旱季adrywell枯井feeldry口渴dryoneseyes/tears擦干眼泪,1cpairwork,discussthefollowingcrazyquestionswithyourpartnerandstateyourreasons.doesmarshaveagoodclimateforplants?ismarsausefulplacetodryfruit?ismarsagoodplaceforhumanbeingstolive?ismarsacomfortableplaceforheavypeople?,kangkangrenai-,thejourneyhasgoneverywell.,bernhardfashionbt,hikangkang,ithasbeentwodayssincewelandedonmars.ittookusmorethan_togethere.generally,thejourneywentwell,buttheliving_werequitebadduringthejourney.wehadto_mostofthefoodinthespaceship.whatsworse,ourwatersupplieswerevery_.wehadtolimittheuseofwaterduringthosedays.itissixweekssincewehadaproper_.sevenhundredandsixty-threedayswhatalongtime!ioften_thefamily,buttheexcitementofbeingonmarsisworthit!goodluck!yours,unclestephen,listentothetapeandcompleteit.,two,years,conditions,produce,shower,low,miss,（录音）,readthee-mailagain.answerthefollowingquestions.,1.howmanydayshadtheystayedonmarstillthen?2.howlongdidittakethemtogettomars?3.weretheylivinginacomfortableroom?,twodays.,twoyears.,no.,readagainandmarktrue(t)orfalse(f).,()1.itsbeenfivedayssincetheylandedonmars.()2.ittookthemthreeyearstogettomars.()3.theyhadplentyoffoodandwaterinthespaceship.()4.theyhavebeenawayfromtheearthfor763days.()5.theexcitementandrisksonmarsareworthit.,f,f,f,t,t,学习探究,1.oldjohngoestosleepaseasilyasababydoes.2.ihavebeenlearningenglishaslongas15years.3.itisnotas(so)popularasotherfoods.4.lineaisfourtimesthelengthoflineb.5.heismorethanthreetimesasrichasi.=heistwicericherthani.6.thepopulationofthiscityistwiceaslargeasthatofthatcity.,worldspaceactivities,questions:,whatcountrytakesthefirststepsonthemoon?,usa.,howmanyastronautsarethereinshenxhou?,therearethree.,whenwasshenzhouwassentupintothespace?,september25th,2008.,whatisthischartabout?,itsaboutworldspaceactivities.,sixcountriesarementionedinthischart,arentthere?,no.thereareonlythree.,3writtenwork,clothingfoodanddrinksweathertr