Unit4SectionA(1a-2d)课件人教版英语八年级下册

Unit4TheWondersofNatureUNIT4Inthisunit,youwill1.talkaboutgeographyfactsaboutnaturalwonders.2.comparefactsaboutfamousplaces.3.sharegeographyfactsusinglargenumbers.4.explorehowandwhypeopleconnectwithnature.Lookatthetitleandthephoto.Whatdoyouthinkthisunitwilltalkabout?

Howdoweconnectwithnature?BIGQuestion?TheWondersofNatureDoyouknowthenameofthewaterfallinthephoto?2.Whatdoyouthinkisspecialaboutit?ThewaterfallinthephotoisVictoriaFallsontheZambeziRiver.Ithinkitisaverybigandwidewaterfall.3.Whatothernaturalwondersdoyouknow?TherearemanyamazingnaturalwondersinChina,includingthemagnificentMountHuangshan,ZhangyeDanxiaLandform(Gansu),andHuangguoshuWaterfall(Guizhou),amongstmanyothers.VictoriaFallsisoneofthelargestwaterfallsintheworld,namedaftertheBritishQueenVictoria,withawidthofover1,700metres.

Howdoweconnectwithnature?BIGQuestion?respectnaturelearnaboutnatureenjoynatureprotectnature…SectionAWhatisamazingaboutnature?(1a—2d)能够判断听力对话的场景和人物的身份，并理解对话的主题及谈到的自然奇观。能够听辨出描述不同“地理之最”的形容词最高级和大数字，在语境中巩固形容词最高级的用法，并熟悉大数字的表达法。能够模仿听力录音，与同伴就地理之最的话题开展对话，并尝试用大数字准确描述这些自然景观的面积、高度、深度等。能够丰富对世界地理的认知，利用跨学科知识助力英语学习。(1a-1d)能够读懂信息图，理解其中符号、图标、数字传递的信息，并用英语描述图中涉及的信息。能够理解听力对话的场景和说话人的身份，并梳理讲座后问答环节中涉及的问题,把握对话的核心内容。能够通过精听把握对话中的细节信息，学会抓取关键词。能够通过学习听力对话，对深海探索的相关知识产生兴趣，主动思考并提出问题在此基础上深入探究，进一步认识深海研究的重要性。(2a-2d)Whatcanyouseeinthepictures?Whichoneisthehighest/biggest/lowest/deepest?Matchtheplaceswiththepictures.___NileRiver____AngelFalls____MountQomolangma___DeadSea____SaharaDesert____MarianaTrenchFADCEB珠穆朗玛峰马里亚纳海沟安赫尔瀑布英文数字读写规则三位数及以内的数字直接按数字本身进行读写;三位数以上的数字从右往左，每三位用逗号分隔，形成分级单位，依次为千(thousand)、百万(milion)、十亿(biion)等。读百位及以内的数字时，通常会在百位和十位之间加一个and;但在千位和百万位之间、百万位和十亿位之间不需要加and。小数点后无论有多少位数，中间都不插入逗号。小数点读作point，其后各位数字(包括0)需要逐个读出。Learntoreadthenumbers.488488,8488,848.86forty-eighteighthundredandforty-eighteightthousandeighthundredandforty-eighteightthousandeighthundredandforty-eightpointeightsix909009,000900,0009,000,000ninetyninehundredninethousandninemillionninehundredthousand形容词最高级的构成和用法不规则变化high→highest,big→biggest(双写),deep→deepest规则变化e.g.MountQomolangmaisthehighestmountaininthe

world.good→best,bad→worstT:Whatcanyouseeinthepicture?S:It’sAngelFalls.T:Howhighisit?S:It’sabout979metreshigh.T:Whatisspecialaboutit?S:Itisthehighestwaterfallinthe

world.PlaceDescription

MeasurementMountQomolangmathe________intheworld__________metreshighSaharaDesertthe_______intheworldabout____________squarekilometresinsizeDeadSeathe_____________onearth_______metresbelowsealevelMarianaTrenchthe_____________intheoceanabout________metresdeepListentothegameshow.Completethedescriptionsoftheplaces.听前关注表头信息（Place,Description,Measurement），大数字和形容词的最高级。highest8848.86biggest9,000,000lowestplace416deepestpoint11,000Listenagain.Completethemeasurementsin1bwiththenumbersbelow.fourhundredandsixteen416ninemillioneightthousand,eighthundredandforty-eightpointeightsix4168,848.8611,0009,000,0008,848.8611,0009,000,000eleventhousandComprehensioncheck.

1.MountQomolangmaisthehighestmountain.2.Itis8,848.43metreshigh.3.TheSaharaDesertisthebiggestdesert.4.TheDeadSeais416metresabovesealevel.5.TheMarianaTrenchisabout11,000metresdeep.TFTFTHost:Welcometoourgameshow!Today,it’sallaboutgeography.Answer

asquicklyasyoucan!Questionone:Whatisthe________

mountain

intheworld?

FuXing:It’sMountQomolangma!

Host:Correct!Howhighisit?

LiuHongyu:Iknowthis—it’s8,848.43metreshigh.

Host:No,sorry.FuXing?

FuXing:Isit_________metres?

Host:Yes!ButsomescientistssayQomolangmaisstillgrowingtaller!Now,

namethe_____________intheworld.

FuXing:TheTaklimakanDesert?

Listenagainandfillintheblanks.8,848.86highestbiggestdesert对话中多次出现形容词最高级，构成：形容词原级+-est(high→highest)，或前面加themost(themostbeautiful)thelowestHost:Wrong!Ella?

Ella:It’stheSaharaDesert.Host:Right!Now,howbigisit?

Ella:It’sabout__________squarekilometres.

Host:That’sright!What’s__________placeonearth?

LiuHongyu:It’stheDeadSea!

Host:Welldone!Itssurfaceis416metresbelowsealevel.Nowwhere’sthe

_________pointintheocean?

FuXing:It’sintheMarianaTrench.

Host:That’scorrect!Howdeepisit?

FuXing:It’sabout________metresdeep.

Host:Correct!

9,000,000deepest11,000在海平面以下在海洋里高度：It’s8.848.86metreshigh.面积：It’sabout9,000,000squarekilometresinsize.低于海平面：It’s416metresbelowsealevel.深度：It’sabout11,000metresdeep.DescriptionMountainRiverSea/LakeDesertFeatureheightlengthdepthareaMostLeasthighest/tallestsmallestlongestshortestdeepestshallowestbiggestsmallestTalkabouttheplacesyouhavelearntabout.What’sthelowestplaceonearth?It’s…Howlowisit?Now,what’s…Itssurfaceis…metresbelowsealevel.What’sthelowestplaceonearth?It’stheDeadSea.Howlowisit?Now,what’sthedeepestpointintheocean?Itssurfaceis416metresbelowsealevel.It’sintheMarianaTrench.Howdeepisit?It’sabout11,000metresdeep.Workwithyourpartnerandtalkaboutthefollowingquestions.Whatisthelargestislandonearth?WhatisthelongestriverinChina?Whatisthebiggest/smallestcountryintheworld?Whatisthedeepesttrenchintheocean?WhatisthebiggestdesertinAfrica?Whatcanwefindinthedeepsea?Whatdoyouknowaboutthedeepsea?Completethesentenceswiththeinformationfromthepicture.1.Fendouzhe

reached_____.2.Thedeepsea

beginsat_____.3.TheTitanicrests

at_____.4.Awhalecandive

to____.ABCDWhatistheconversationabout?Whatdoes“submersible”mean?Aclassisaskingadeep-searesearchersomequestionsafterhistalk.Listenandtickthetopicstheydiscuss.wherethedeepseabegins

whypeopleareresearchingthedeepsea

whichChinesesubmersiblediveddeeperinthewaterthanmanyothers

whatdeep-seaanimalsarelike

howeveryoneshouldprotectthedeepsea□□□□□Listentotheconversationandfillintheblanks.NameQuestionAnswerEmmaWhyarepeopleresearchingthedeepsea?_________isonereason.FuXingWhataredeep-seaanimalslike?Manyare_______and________.Someareblind.Someevencreatetheirownlight!PeterArethereanyothersurprisingfactsaboutthedeepsea?There’s_________evenat11,000metresdeep.CuriositylargeunusualrubbishListenagain.Completethesentenceswiththefactsfromtheconversation.1.Peoplestilldon’tknowmuchaboutthe__________________.

2.In______,China’sFendouzhedivedintothedeepseaand

filmedit.

3.Someanimalshaveunusualabilities.Someare_______but

can“see”.Somecanevencreatetheirown________.

4.Thereisrubbishevenat__________metresdeep.oceanfloor/deepsea2020blindlight11,000Listenagain.Completethefollowingtrueorfalsequestions.MrJonessaidcuriosityistheonlyreasonforresearchingthedeepsea.FuXingdidn'tseeanydeep-seaanimalswhenFendouzhefilmedtheMarianaTrench.MrJonesthoughtdeep-searubbishisnotabigproblem.MsGaosaidpeopleshoulddosomethingaboutdeep-searubbish.FTFTListenagain.Completethefollowingsentences.In2020,China’sFendouzhedived__________intotheMarianaTrenchthanmanyothersubmersiblesintheworldandfilmedit.Someanimalsareblind,buttheycan“see”_________others.There’srubbishevenat________metresdeepintheocean.deeperaswellas11,000MsGao:Thankyouforthewonderfultalk,MrJones.Now,

doesanyonehaveanyquestions?

Emma:Ido!Whyaresomanycountriesresearchingthedeepsea?

MrJones:Well,curiosityisonereason.Wedon’tknowenough

abouttheoceanfloor.

FuXing:Irememberthatin2020,China’sFendouzhedived

deeperintotheMarianaTrenchthanmanyother

submersiblesintheworldandfilmedit.ButIdidn’tsee

anydeep-seaanimals.Whataretheylike?

for+名词或动名词，表示感谢的原因形容词/副词比较级+than，表示“比……更……”manyother表示“许多其他的”，强调对比MrJones:Well,manydeep-seaanimalsarelargeandunusual.

Someanimalsareblind,buttheycan“see”aswell

asothers.Someevencreatetheirownlight!

Peter:Cool!Arethereanyothersurprisingfactsaboutthe

deepsea?

MrJones:Didyouknowthatthere’srubbishevenat11,000

metresdeep?Thatshockedmanypeople.MsGao:That’sterrible!Weshoulddosomethingaboutit.

MrJones:You’reright!aswellas表示“和……一样好”anyother+名词复数，表示“还有其他……吗？”Readthequestionsandthinkofmoreyouwouldliketoaskthedeep-searesearcher.Researchtheanswers.Thenaskandanswerthequestionswithapartner.Whatis