Unit4SectionA2a2d（课件）人教版英语八年级下册

Unit4TheWondersofNatureSectionA2a–2dThinkandshare.•What’sthehighestmountainintheworld?Howhighisit?•Where’sthedeepestpointintheocean?Howdeepisit?

Whatelsedoyouknowaboutthedeepsea?It’sMountQomolangmaandit’s8,848.86metreshigh.It’sintheMarianaTrenchandit’sabout11,000metresdeep.行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级LookandshareDoyouknowthenameofthewaterfallinthephoto?It’sVictoriaFalls.Whatdoyouthinkisspecialaboutit?LargeandwideontheZambeziRiver(赞比西河),betweenZambia(赞比亚)andZimbabwe(津巴布韦)insouthernAfricaoneofAfrica’slargestwaterfalls,about1,700meterswideandupto108metershigh.行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级LookandshareWhatothernaturalwondersdoyouknow?/ˈnætʃrəlˈwʌndəz/Naturalwonders

areamazing,uniquethingsmadebynature(nothumans).Theyareoftenverybig,beautiful,orspecial.行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级____NileRiver____AngelFalls____MountQomolangma____Deadsea____SaharaDesert____MarianaTrenchMatchtheplaceswiththepictures.1aFADCEB马里亚纳海沟安赫尔瀑布尼罗河BECFDAbelowthesealevel珠穆朗玛峰死海撒哈拉沙漠行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级Pre-listening

Todaylet’sjoinagameshow.I’mthehost.

Canyouguesswhatitisabout?Geographychallenge行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级PlaceDescriptionMountQomolangmathe________________intheworldSaharaDesertthe

intheworldDeadSeathe

onearthMarianaTrenchthe________________intheoceanhighestmountainbiggestdesertlowestplacedeepestpointListentothegameshow.Completethedescriptionsoftheplaces.1bWhatdoyouknowaboutthesewonders?

HowhighisMountQomolangma?

8,848.86行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级Doyouknowhowtoreadthewords?Let’sreview416 8,848.86 11,000 9,000,000Let’sreadthenumbers!大数字读法：从____往____，_____位一截每截都按三位数读截完加单位：___________/_______/______________用在百十间右左三andthousandmillionbillion大数字读法：从右往左数，每三位为一个区间用逗号隔开，分别读thousand千（4位数）,million百万（七位数）,billion十亿（10位数）;百位和十位之间and连接，小数点读point.英语中没有万、亿行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级8,848.86Doyouknowhowtoreadthelargenumbers?Let’slearnthousandpointeightsixand8,848.86:eightthousand,eighthundredandforty-eightpointeightsix41611,0009,000,000millionfourhundredandsixteeneleventhousandninemillionLet’sreadthenumbers!416 8,848.86 11,000 9,000,000416三位数读法fourhundred

and

sixteen367threehundred

and

sixtysevenfivehundred

and

nine509________________________________________________三位数：百位数字+hundred+and+十位和个位（十位若是0，直接读个位）416 8,848.86 11,000 9,000,0008,848.86四位数读法thousandeighthundred

and

forty-eightpointeightsix小数部分逐个读出每个数字读法：eightthousandeighthundredandforty-eightpointeightsixLet’sreadthenumbers!416 8,848.86 11,000 9,000,000四位数读法5,961.37fivethousand,ninehundred

andsixty-one，point

threeseven四位数：千位数+thousand+后面三位数（小数部分逐个读出数字）Let’sreadthenumbers!416 8,848.86 11,000 9,000,000五位数读法11,000eleventhousand259,613twohundredandfifty-ninethousand，sixhundredandthirteenLet’sreadthenumbers!六位数读法9,000,000ninemillion七位数读法millionthousand十位数读法9,876,543,200thousand千million百万billion十亿从左往右，第一个逗号读thousand,第二个逗号读million,第三个逗号读billion。ninebillion,eighthundredandseventy-sixmillion,fivehundredandforty-threethousand,twohundred行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级Listenagain.Completethe

measurements.1cPlaceMeasurementMountQomolangma________metreshighSaharaDesertabout________squarekilometresinsizeDeadSea________metresbelowsealevelMarianaTrenchabout________metresdeep8,848.869,000,00041611,000Learningtip:长、宽、高、深、面积的表达方法:基数词+单位词+形容词（long,wide,high,deep等）/介词短语（insize,belowsealevel等）行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级Host:Welcometoourgameshow!Today,it'sallaboutgeography.Answerasquicklyasyoucan!Questionone:________________________intheworld?FuXing:It'sMountQomolangma!Host:Correct!________________?LinHongyu:Iknowthis—it's8,848.43metreshigh.Host:No,sorry.FuXing?FuXing:Isit8,848.86metres?Host:Yes!ButsomescientistssayQomolangmaisstillgrowingtaller!Now,________________________intheworld.FuXing:TheTaklimakanDesert?Host:Wrong!Ella?ListenandfillWhatisthehighestmountainHowhighisitnamethebiggestdesertWhatquestionsdidthehostask?行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级Ella:TheSaharaDesert.Host:Right!Now,______________?Ella:It'sabout9,000,000squarekilometres.Host:That'sright!______________________onearth?LinHongyu:It'stheDeadSea!Host:Welldone!Itssurfaceis416metresbelowsealevel.Now___________________________intheocean?FuXing:It'sintheMarianaTrench.Host:That'scorrect!_________________?FuXing:It'sabout11,000metresdeep.Host:Correct!howbigisitWhat'sthelowestplacewhere'sthedeepestpointHowdeepisitListenandfill-Whatisthehighest/biggest/lowest/deepest...intheworld/onearth/intheocean?、、、的最、、、-It’s...-Howhigh/big/deep/longisit?有多高/大/深？-It’sabout.../Itssurfaceis...大约是、、、Pair-workTalkabouttheplacesyouhavelearntabout.1d8,848.869,000,00041611,0006,650kilometerslong979.6metershighA:What'sthelowestplaceonearth?B:It's...A:Howlowisit?B:Itssurfaceis...metresbelowsealevel.A:Now,what's...行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级Youalldidagreatjobingeographychallenges!Herecomesadeep-searesearcher.Let’swelcomeandlearnmore!

Areyouinterestedintheworldinthedeepsea?Let’shavealook!行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级行业PPT模板http:///hangye/行业PPT模板http:///hangye/单击此处编辑母版标题样式单击此处编辑母版文本样式单击此处编辑母版文本样式二级三级四级五级strangefishWhatdoyouknowaboutthedeepsea?submarinescanreachLet’ssharecolddark/ˈsʌbməˌrinz/FendouzheisChina'smanneddeep-seasubmersible,whichreachedadepththatsetanewrecordforChina'sdeep-seadiving.Completethesentenceswiththeinformationfromthepicture.Doyouhaveanyquestions?(1)Fendouzhereached____.(2)Thedeepseabeginsat____.(3)TheTitanicrestsat____.(4)Awhalecandiveto____.DepthoftheMarianaTrenchDACBAclassisaskingadeep-searesearchersomequestionsafterhistalk.Guessthetopicstheydiscuss.□wherethedeepseabegins□whypeopleareresearchingthedeepsea□whichChinesesubmersiblediveddeeperinthewaterthanmanyothers□whatdeep-seaanimalsarelike□howeveryoneshouldprotectthedeepseadeep-searesearcherAclassisaskingadeep-searesearchersomequestionsafterhistalk.Listenand

tick()thetopicstheydiscuss.□wherethedeepseabegins□whypeopleareresearchingthedeepsea□whichChinesesubmersiblediveddeeperinthewaterthanmanyothers□whatdeep-seaanimalsarelike□howeveryoneshouldprotectthedeepseaListenagain.Completethesentenceswiththefactsfromtheconversation.(1)Peoplestilldon’tknowmuchaboutthe_______________.(2)In________,China’sFendouzhedivedintothedeepseaandfilmedit.(3)Someanimalshaveunusualabilities.Someare________butcan“see”.Somecanevencreatetheirown________.(4)Thereisrubbishevenat________metresdeep.deepsea/oceanfloorListeningtipFindthekeywords.Whenyouhearthem,paycloseattention—theanswerisusuallynearby.2020blindlight11,000Whyisitimportanttoresearchthedeepsea?Thinkfurther.•Curiosity:

Itisthe

largestpartonearth,and

westilldon’tknowmuchaboutit.•AmazingLife:

Itishometo

unusualanimals.•Protection:

Humanactivitiesaffecteverywhere.

Weshoulddosomethingaboutit

andprotectourhome.•…12.Thinkofmorequestionsyouwouldliketoaskthedeep-searesearcher.•Talkaboutreasons:Why...?•Talkaboutfeatures(特征):Whatare...like?•Askformoreinformationandgiveananswer:Which...?/Whatisthe...?Arethereanyother…about...?Whatelse...?•Askforopinions:Whatdoyouthinkof...?Whatshouldwedo?Languagebank13.Supposeyouareatageographylecture,thinkofmoreyouwouldliketoaskthedeep-searesearcher.Makeupaconversationwithyourgroupmembers.AskandanswergeographyfactsSectionAWhatisamazingaboutnature?•Talkaboutreasons:Why...?...isonereason.Because...•Talkaboutfeatures(特征):Whatare...like?...are/can...•Askformoreinformationandgiveananswer:

Arethereanyother...about...?Whatelse...?Thereis/are...•Askforopinions:Whatdoyouthinkof...?Whatshouldwedo?Ithink..