Unit4SectionA2a3d课件人教版英语八年级下册

Unit4TheWondersofNatureSectionAWhatisamazingaboutnature?SectionA

2a-3dDiscussMountQomolangmaItisthehighestmountainintheworld,standingat8,848.86meters.ItliesontheborderbetweenChinaandNepal.Itisafamousnaturalwonderandapopularplaceformountainclimbers.DiscussItisthelargestinlandsaltwaterlakeinChina.ItislocatedinQinghaiProvince,northwestChina.Itisfamousforitsclearbluewaterandbeautifulnaturalscenery.QinghaiLakeDiscussItisthelargestdesertinChina.ItisintheTarimBasin(塔里木盆地),Xinjiang.Ithashugemovingsanddunes(流动沙丘)andaverydryclimate.TaklimakanDesertDiscussTheyarefamousgorgesontheYangtzeRiver.TheThreeGorgesDamthereistheworld’slargesthydropowerstation(水电站).Itisanimportantengineeringwonderandagreatplaceofinterest.TheThreeGorgesWhat’sthehighestmountain

intheworld?It’stheMountQomolangma.Let’saskandanswer!LeadinWhat’sthebiggestdesert

intheworld?It’stheSaharaDesert.What’sthelowestplace

onearth?It’stheDeadSea.What’sthelongestriver

intheworld?It’stheNile.1.Fendouzhereached______________.2.Thedeepseabeginsat______________.3.TheTitanicrestsat____________.4.Awhalecandiveto_________________.2aWhatdoyouknowaboutthedeepsea?Completethesentenceswiththeinformationfromthepicture.潜水10,909metres200metres3,800metresover2,000metreswherethedeepseabeginswhypeopleareresearchingthedeepseawhichChinesesubmersiblediveddeeperinthewaterthanmanyotherswhatdeep-seaanimalsarelikehoweveryoneshouldprotectthedeepsea/rɪˈsɜːtʃ/v.&n.研究潜水艇ExplorationAclassisaskingadeep-searesearchersomequestionsafterhistalk.Listenandtickthetopicstheydiscuss.2b

A.Tofindmorefishforfood.B.Outofcuriosityandbecausewedon'tknowenoughabouttheoceanfloor.C.Tobuildunderwatercities.1.Whyaremanycountriesresearchingthedeepsea?Whatistrueaboutmanydeep-seaanimals?A.Theyareallsmallandcolorful.B.Someareblindbutcanstill"see,"andsomemaketheirownlight.C.Theyalllivenearthesurfaceoftheocean.WhatsurprisingfactaboutthedeepseadoesMrJonesmention?A.Therearenolivingthingsat11,000metersdeep.B.Thereisrubbishevenat11,000metersdeep.C.China'sFendouzheistheonlysubmersibletoreachthedeepsea.Listentotheconversationandthinkaboutthequestionsbelow.Listenforquestionwords:where,why,which,what,howListenfornames:Fenoduzhe(aChinesevessel)Listenfornumbers:depths,yearsListeningtipsListenagain.Completethesentenceswiththefactsfromtheconversation..2c

1.Peoplestilldon’tknowmuchaboutthe___________.2.In______,China’sFendouzhedivedintothedeepseaandfilmedit.3.Manydeep-seaanimalsare______and________.4.Someanimalshaveunusualabilities.Someare______butcan“see”.Somecanevencreatetheirown_________.5.Thereisrubbishevenat______metresdeep.oceanfloor2020largeunusualblindlight11,000/ʌnˈjuːʒuəl/adj.不寻常的Exploration2dReadthequestionsandthinkofmoreyouwouldliketoaskthedeep-searesearcher.Researchtheanswers.Thenaskandanswerthequestionswithapartner.What

is

the

largest

shark

in

the

deep

sea?What

is

the

bottom

of

the

deep

sea

like?Why

is

itimportanttoresearchthe

deep

sea?在……的底部3aReadtheconversationandunderlinethethreerivers.While-readingTheYellowRiverTheYangtzeRiverTheNile、listentotheconversation.Post-reading:观看视频对话Post-reading对子活动3cShowyourreading.2minYaming: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'sthelongestriverintheworld?Yaming:Yes,it's6,671kilometreslong.It'sveryimportantinEgypt'shistory.Ella:That'sright.BoththeNileandtheYellowRiverhelpedancientcivilizationstodevelop.Andthey'restillveryimportanttoday.Yaming:Yes.InChina,weevencalltheYellowRiverour"motherriver"!Ella:Weshouldprotectthematallcosts.Yaming:

Welcomeback,Ella!Howwasyourtrip?Ella:Itwasgreat!WesawtheHukouWaterfallontheYellowRiver.IsthatthelongestriverinChina?Yaming:No,theYangtzeRiveristhelongestriverinChina.Ittravelsthefarthestandisabout6,300kilometreslong.TheYellowRiveris5,464kilometreslongandis

thesecondlongest.Bytheway,doyouknowwhyit'scalledtheYellowRiver?Ella:Becauseit'syellow?Yaming:Right.Somepartsoftherivercarrybrownandyellowearth.欢迎回来你的旅行怎么样？中国最长的河流流经距离最远第二长的顺便问一下

doyouknowwhy...?你知道为什么……吗？携带棕黄色的泥土Ella:That'sinteresting!Ilikelearningaboutrivers.MyfavouriteistheNile.Didyouknowit'sthelongestriverintheworld?Yaming:Yes,it's6,671kilometreslong.It'sveryimportantinEgypt'shistory.Ella:That'sright.BoththeNileandtheYellowRiverhelpedancientcivilizationsto

develop.Andthey'restillveryimportanttoday.Yaming:Yes.InChina,weevencalltheYellowRiverour"motherriver"!Ella:Weshouldprotectthematallcosts.世界上最长的河流在埃及历史上bothAandB……和……两者都古代文明help...todevelop帮助…发展call...our"motherriver"把……称作我们的“母亲河”protect...atallcosts不惜一切代价保护……Summary◆重点词汇◆河流对比YangtzeRiver,Egypt,TaklimakanDesert,bytheway,both…and…

RiverCountryLengthImportanceYellowRiver____________________kmhelpedinthedevelopmentofancient_____________NileRiver____________________kmYangtzeRiver____________________kmthe_________riverinChinaChina5,464Egypt6,671civilizationsChina6,300longestLanguagepoints1.数字的读法6,300→sixthousandthreehundred5,464→fivethousandfourhundredandsixty-four6,671→sixthousandsixhundredandseventy-one三位一组划分,从右往左，每三位用逗号隔开：6,300→6thousand,3005,464→5thousand,46412,345→12thousand,345百位与十位/个位之间英式英语：加and，如5,464→fivethousandfourhundredandsixty-four美式英语：可省略and，如fivethousandfourhundredsixty-four3.形容词最高级（Superlatives）thelongestriver（最长的河流）thesecondlongest（第二长的）thefarthest（最远的）用法：三者及以上比较时，用the+形容词最高级；序数词+最高级表示“第几最……”。2.数字与长度表达about6,300kilometreslong（约6300千米长）5,464kilometreslong（5464千米长）结构：数字+单位+long/wide/tall等。ExerciseZhouYang:InChina,theHukou(1)

(瀑布)isafamousnaturalwonderthatattractslotsofvisitors.

ZhangYu:TheancientEgyptian(2)

(文明)developedalongthebanksoftheNileRiver.

SuYao:TheYellowRiverplaysanimportantroleinthe(3)

(发展)ofChina.

LinYue:TheTaklimakanDesertisthebiggest(4)

(沙漠)inChina.

HuangLing:InEgypt,thetraditionalmeansoftransportationontheNileRiveristhefelucca,akindofwoodenboat.补全对话WaterfallcivilizationdevelopmentdesertMikelives________fromschoolofallthestudents,andhealwaystakesthesubwaytoschool.A．far B．farther C．thefarther D．thefarthest1SutongBridgeovertheYangtzeRiverisabout____