人教八下英语Unit 4 Section A《自主学习》课件

SectionA自主学习Unit4TheWondersofNature1aMatchtheplaceswiththepictures._____NileRiver_____AngelFalls_____MountQomolangma_____DeadSea_____SaharaDesert_____MarianaTrenchFADCEB1bListentothegameshow.Completethedescriptionsoftheplaces.1cListenagain.Completethemeasurementsin1bwiththenumbersbelow.4168,848.8611,0009,000,000PlaceDescriptionMeasurementMountQomolangmathe_______________intheworld____________metreshighhighestmountain8,848.86PlaceDescriptionMeasurementSaharaDesertthe____________intheworldabout_________________squarekilometresinsizeDeadSeathe____________onearth________metresbelowsealevelMarianaTrenchthe____________intheoceanabout________metresdeepbiggestdesertlowestplacedeepestpoint9,000,00041611,0001dTalkabouttheplacesyouhavelearntabout.A:What’sthelowestplaceonearth?B:It’s...A:Howlowisit?B:Itssurfaceis...metresbelowsealevel.A:Now,what’s…2aWhatdoyouknowaboutthedeepsea?Trytolabelthedepthsinthepicturewiththeinformationontheleft.A.DepthFendouzhereachedB.DepthatwhichthedeepseabeginsC.DepthatwhichtheTitanicrestsD.DeepestdiveofawhaleBDCA2bAclassisaskingadeep-searesearchersomequestionsafterhistalk.Listenandtickthetopicstheydiscuss.□wherethedeepseabegins□whypeopleareresearchingthedeepsea□whichChinesevesseldiveddeeperinthewaterthanmanyothers□whatdeep-seaanimalsarelike□howeveryoneshouldprotectthedeepsea√√√√2cListenagain.Completethesentenceswiththefactsfromtheconversation.1.Peoplestilldon’tknowmuchaboutthe__________________.2.In__________,China’sFendouzhe

divedintothedeepseaand____________

it.oceanfloor2020filmed3.Manydeep-seaanimalsare_______and__________.4.Someanimalshaveunusualabilities.Someare_________butcan“_______”.Somecanevencreate_____________________.5.Thereisrubbishevenat___________metresdeep.largeunusualblindseetheirownlight11,0002dReadthequestionsandthinkofmoreyouwouldliketoaskthedeep-searesearcher.Researchtheanswers.Thenaskandanswerthequestionswithapartner.·Whatisthelargestsharkinthedeepsea?·Whatisthebottomofthedeepsealike?·Whatothervesselsdivedtothebottomoftheocean?·Whyisthedeepseaimportanttous?……的底部1.Thewhaleshark.2.Dark,cold(0-4℃),pressurized.3.Trieste(reachedMarianaTrenchin1960)andShinkai6500(Japanese,forresearch).4.Itholdsuniquebiodiversity(forevolution/medicalresearch),storescarbon(regulatesclimate),hasmineralresources,andhelpsprotectmarineecosystems.（答案均不唯一）3aReadtheconversationandunderlinethethreeriversmentioned.Yaming:Welcomeback,Ella!Howwasyourtrip?Ella:Itwasgreat!WesawtheHukouWaterfallontheYellowRiver.IsthatthelongestriverinChina?Yaming:No,theYangtzeRiveristhelongestriverinChina.Ittravelsthefarthestandisabout6,300kilometreslong.TheYellowRiveris5,464kilometreslongandisthesecondlongest.Bytheway,doyouknowwhyit’scalledtheYellowRiver?_____________________________Ella:Becauseit’syellow?Yaming:Right.Somepartsoftherivercarrybrownandyellowearth.Ella:That’sinteresting!Ilikelearningaboutrivers.MyfavouriteistheNile.Didyouknowit’sthelongestriverinAfrica?Yaming:Yes,it’s6,671kilometreslong.It’sveryimportantinEgypt’shistory.陆地；土，泥”→Earth世界；地球______learnabout了解；学习learnof听说，获悉learnfrom向……学习；从……中吸取教训Ella:That’sright.BoththeNileandtheYellowRiverhelpedancientcivilizationstodevelop.Andthey’restillveryimportanttoday.Yaming:Yes.InChina,weevencalltheYellowRiverour“motherriver”!Ella:Weshouldprotectthembyallmeans.civilizationn.文明→civilizev.教化；使文明byallmeans意为“采用一切手段；无论如何”，单独使用时还可意为“可以；当然行；没问题”。3bWhatdoYamingandEllaknowabouttheserivers?Readtheconversationagainandcompletethetable.RiverCountryLengthImportanceYellowRiver______________kmhelpedinthedevelopmentofancient_____________NileRiver______________kmChinaEgypt5,4646,671civilizations3cListentotheconversation.Thenrole-playit.3dImaginethatyouareYamingorElla.ContinuetheconversationwithapartneraboutothergeographicalfeaturesinChina.Ella:CouldyoutellmemoreaboutChina,Yaming?Yaming:Sure!Whatwouldyouliketoknow?Ella:What’sthebiggestdesertinChina?Yaming:It’stheTaklimakanDesert.Ella:Doyouknow...?desertn.沙漠→dessertn.甜点4aReadthesentences.Circletheadjectiveswhichcomparethings.Underlinetheadverbswhichcompareactions.Whatisthebiggestdesertintheworld?ItistheSaharaDesert.Howbigisit?Itisabout9,000,000squarekilometresinsize.Whereisthedeepestpointintheocean?ItisintheMarianaTrench.Howdeepisit?Itisabout11,000metresdeep.Someblindanimalscan"see"aswellasothers.MountQomolangmaisstillgrowingtaller.TheYangtzeRivertravelsthefarthestinChinaandisabout6,300kilometreslong.4bWriteorspelloutthenumbers.1.MountKilimanjarois_________(fivethousand,eighthundredandninety-five)metreshigh.2._________(twenty-fivethousand,sevenhundredandsixty-eight)cubicmetresofwaterpoursdownIngaFallseachsecond.5,89525,7683.TheEastAfricanRiftValleyisabout4,000(__________________)mileslong.4.TheTaklimakanDeserthasatotalareaofabout337,000(____________________________________________________)squarekilometres.fourthousand1mile≈1.609kilometresthreehundredandthirty-seventhousand4cCompletethepassagewiththecorrectformsofthewordsinthebox.Onewordisusedmorethanonce.MyfriendsandIvisitedVictoriaFallsinAfricalastyear.Visitingoneoftheworld’s________waterfallswasamagicalexperience.largestlargescaryamazingfarcloseloudAswewent_____