How life began on the earth--课件

Howlifebeganontheearth--wordstudywhilereadingAttheendoftheclass,studentswillbeableto1.usethenewlylearnedwordsinpropercontext(使用词汇)2.classifythewordsaccordingtodifferentsorts（词汇分类）3.designaposteraboutprotectingthewaterresourcesontheearth.（设计海报）Enjoythevedio(视频)HowlifebeganontheearthFishcannotswimwithoutwater.Plantcannotgrowwithoutwater.Mancannotlivewithoutfreshwater.Wateristomanwhatwateristofish.Watermakesitpossibleforlifetodevelop.Itisobviousthatwaterwastobefundamentaltothedevelopmentoflife.Whatisitabout?Waterisvery_________importantWithoutWater,nothingcouldliveontheearthWateristomanwhatwateristofish.Itisobviousthatwateristobefundamentalofourdevelopment.Watermakesitpossibleforlifetoliveontheearth.Whatisitabout?Waterisvery_________limitedItisgenerallybelievedthatthereisalotoffreshwaterontheearth.Butthefactisnot.Theworldpopulationisgrowingquicklydaybyday.Soenoughfreshwaterisneededtoallowpeopletolive.Weneedtomakegooduseofwaterinsteadofwastingwaterinourdailylife.AlotoffreshwaterisneededtoallowpeopletolivePeopleneedtomakegooduseofwater.ThefactisthatthefreshwaterontheearthisverylimitedWiththedevelopmentofindustry,factoriesproduceharmfulgasesandwastes,itleadstothepollutionofwater.Asisknowntoall,pollutedwaterdoesharmtoourhealth.Waterpollutionkillsourfishandpollutesourdrinkingwater.Whatisitabout?Wateris_________pollutedThedevelopmentofourlifeleadstothepollutionofwater.PollutedwaterdoesharmtoourhealthWaterpollutionkillsourfishandpollutesourdrinkingwaterButwhetherlifewillcontinueontheearthwilldependonwhethertheproblemofwatercanbesolved.Stoppollutionandsavewater.SetdownYOUROWNideasofsolvingtheproblemofwateronthesheetofpaper.ClassifytheSolutionsaccordingtoPollutionandWasteofwater:1.Pleasebrushyourteethwiththewaterincupinsteadofkeepingwaterrunningallthetime.2.washclothsandcleancarsbyhandinsteadofwiththehelpofmachines.3.Paysattentiontothedrippingtaps,itisveryimportanttothepeoplewholackwater.4.Cutdowntheuseofchemicalmaterials(化学物质)infarming5.Toiletbowlshavetwobuttons,asmalloneandabigone.Ifyoupressthesmallone,youwilluselesswater.6.Cleanthepetwaste(粪便)beforeitgoesintoourriverwiththerain.7.Stopthrowingthelitter(垃圾)everywhereespeciallyintothelakeandriver.TherearemanywaystosavewaterAndtheyallstartwithYOUApril22nd,2012Let’sgivewaterahand!DesignaposterfortheearthdayonApril22nd,2012•ingroupsofFour.•FocusmainlyonOneaspectofit.•Usetheexpressionswelearnedinclasstohelpyou.SharingTime爱每一滴水，爱整个世界+SummaryWordsaboutwaterontheearth.importanceshortagepollutionSolutionsocietypeopleA.c.Whatshouldwedoforwater?problemB.+Plants&animalshumansHomework•Writeanessayaboutthewater.•Includeatleast3aspects:–importance–problems–solutions–…•Putdownyourwishesfortheearthattheendofyouressay.Thankyouandhaveaniceday.Class5&Miss.Zhang