Unit4SectionA（1a2d）课件人教版英语八年级下册

SectionA(1a-2d)Unit4TheWondersofNatureLearningObjectivesInthisunit,wewill：1.talkaboutgeographyfactsaboutnaturalwonders.2.comparefactsaboutfamousplaces.3.sharegeographyfactsusinglargenumbers.4.explorehowandwhypeopleconnectwithnature.

LearningObjectivesBytheendofthislesson,wewillbeableto：1.listenandknowaboutthenaturalwondersoftheworld;2.talkaboutthedeep-seaknowledgeusingthetargetlanguage.

What’sthis?It’sourearth.Whatdoyouknowabouttheearth?______NileRiver______AngelFalls______MountQomolangma______DeadSea______SaharaDesert______MarianaTrench1aMatchtheplaceswiththepictures.ADEFFADCEBThisis...It’sfamousfor...BCPlaceDescriptionMeasurementMountQomolangmathe_______________intheworld__________metreshighSaharaDesertthe_______________intheworldabout__________squarekilometresinsizeDeadSeathe________________onearth__________metresbelowsealevelMarianaTrenchthe_______________intheoceanabout__________metresdeep1bListentothegameshow.Completethedescriptionsoftheplaces.highestmountainbiggestdesertlowestplacedeepestpointPlaceDescriptionMeasurementMountQomolangmathe_______________intheworld_____________metreshighSaharaDesertthe_______________intheworldabout______________squarekilometresinsizeDeadSeathe______________onearth__________metresbelowsealevelMarianaTrenchthe_______________intheoceanabout__________metresdeep1cListenagain.Completethemeasurementsin1bwiththenumbersbelow.highestmountain8,848.86biggestdesert9,000,000lowestplace416deepestpoint11,000Host:Welcometoourgameshow!Today,it'sallaboutgeography.Answerasquicklyasyoucan!Questionone:Whatisthehighestmountainintheworld?FuXing:It'sMountQomolangma!Host:Correct!Howhighisit?LiuHongyu:Iknowthis—it's8,848.43metreshigh.Host:No,sorry.FuXing?FuXing:Isit8,848.86metres?Host:Yes!ButsomescientistssayQomolangmaisstillgrowingtaller!Now,namethebiggestdesertintheworld.FuXing:TheTaklimakanDesert?Host:Wrong!Ella?Ella:It'stheSaharaDesert.Host:Right!Now,howbigisit?Ella:It'sabout9,000,000squarekilometres.Host:That'sright!What'sthelowestplaceonearth?LiuHongyu:It'stheDeadSea!Host:Welldone!Itssurfaceis416metresbelowsealevel.Nowwhere'sthedeepestpointintheocean?FuXing:It'sintheMarianaTrench.Host:That'scorrect!Howdeepisit?FuXing:It'sabout11,000metresdeep.Host:Correct!1dTalkabouttheplacesyouhavelearntabout.A:What’sthelowestplaceonearth?B:It’s...A:Howlowisit?B:Itssurfaceis...metresbelowsealevel.A:Now,what’s...Pairwork2aWhatdoyouknowaboutthedeepsea?Completethesentenceswiththeinformationfromthepicture.2bAclassisaskingadeep-searesearchersomequestionsafterhistalk.Listenandtickthetopicstheydiscuss.□

wherethedeepseabegins□whypeopleareresearchingthedeepsea□

whichChinesesubmersiblediveddeeperinthewaterthanmanyothers□whatdeep-seaanimalsarelike□howeveryoneshouldprotectthedeepsea2cListenagain.Completethesentenceswiththefactsfromtheconversation.1.Peoplestilldon'tknowmuchaboutthe

_______________.2.In_________,

China'sFendouzhedivedintothedeepseaand

filmedit.3.Someanimalshaveunusualabilities.Someare

________butcan“see”.Somecanevencreate

theirown_________.4.Thereisrubbishevenat

___________metresdeep.oceanfloor2020blindlight11,000MsGao:Thankyouforthewonderfultalk,MrJones.Now,doesanyonehaveanyquestions?Emma:Ido!Whyaresomanycountriesresearchingthedeepsea?MrJones:Well,curiosityisonereason.Wedon'tknowenoughabouttheoceanfloor.FuXing:Irememberthatin2020,China'sFendouzhediveddeeperintotheMarianaTrenchthanmanyothersubmersiblesintheworldandfilmedit.ButIdidn’tseeanydeep-seaanimals.Whataretheylike?MrJones:Well,manydeep-seaanimalsarelargeandunusual.Someanimalsareblind,buttheycan"see"aswellasothers.Someevencreatetheirownlight!Peter:Cool!Arethereanyothersurprisingfactsaboutthedeepsea?MrJones:Didyouknowthatthere'srubbishevenat11,000metresdeep?Thatshockedmanypeople.MsGao:That'sterrible!Weshoulddosomethingaboutit.MrJones:You'reright!2dReadthequestionsandthinkofmoreyouwouldliketoaskthedeep-searesearcher.Researchtheanswers.Thenaskandanswerthequestionswithapartner.Whatisthelargestsharkinthedeepsea?Whatisthebottomofthedeepsealike?TheGreenlandshark.Itcangrowverylong.It'sdark,coldandhashighpressure.Thereareflatareas,hydrothermalvents,seamountsandtrenches.2dReadthequestionsandthinkofmoreyouwouldliketoaskthedeep-searesearcher.Researchtheanswers.Thenaskandanswerthequestionswithapartner.Whyisitimportanttoresearchthedeepsea?Ithasuniquespeciesforscience/medicine,helpsregulateclimate,hasresourcesandhelpsuslearnthehistoryofearth.Workingroups.Chooseoneoftheplacesin1aandintroduceittoothers.GroupworkCheckyourpresentationPresentyourpostertotheclass.languagecorrectform(形式正确)accuratemeaning(意义精确)properuse(使用恰当)posterdesigncreativity(创意)performanceconfidence(自信)OK

Good

ExcellentMankindwithoutearthishumanitywithoutahome.没有地球的人类就没有家园。What'sthelowestplaceonearth?此句为what引导的含最高级的特殊疑问句，句意“地球上最低的地方是哪里？”；onearth表示“在地球上；究竟（加强语气）”。常见例句：—What’sthelongestriveronearth?地球上最长的河是什么？

—TheNileRiver.

尼罗河。一、用所给单词的适当形式填空1.Let'stalk

aboutthenatural__________(wonder)inclass.2.Heoften________(share)hisstoriesabouttravelingwithus.3.The_____________(measure)oftheboxis20centimetreslong.4.Thisisoneofthe________(deep)lakesinourcountry.wonderssharesmeasurement