Unit 4 Section A 2a-3d 课件 英语新教材人教版八年级下册

通过听、说、读等方式，获取并正确认读关于深海探索、河流特征等主题词汇（如depth,vessel,unusual,bottom,civilization等），感知自然奇观相关词汇用法。（学习理解）01通过听力捕捉、对话分析，获取文本中关于深海深度划分、河流长度与重要性的关键信息，归纳并内化询问与介绍自然奇观的常用表达（如Wheredoesthedeepseabegin?,Ittravelsthefarthestandis...kilometreslong.）。（应用实践）02通过讨论和角色扮演，理解自然奇观的价值与保护意义，能够主动分享对自然奇观的探究问题，并认同保护自然的理念。

（迁移创新）03学习目标01LeadinCanyousaysomewordsrelatedtowater?Leadinseariverlakewaterfallsnowandice

今天我们将进行地球“水圈探索”，作为“地球水研究者国际研讨会”的研究员，我们将在探索中肩负使命，学到更多水的奥秘，尽我们所能保护人类共同的家园。02Pre-listening1a

Whatdoyouknowaboutthedeepsea?Let’sfollowFenfouzhetoexplore.1a

Trytolabelthedepthsinthepicturewiththeinformationontheleft.A.DepthFendouzhereachedB.DepthatwhichthedeepseabeginsC.DepthatwhichtheTitanicrestsD.DeepestdiveofawhaleA/depθ/n.深（度）/daɪv/v.&n.潜水泰坦尼克号BDC03While-listeningListenandtickthetopicstheydiscuss.2b

wherethedeepseabeginswhypeopleareresearchingthedeepseawhichChinesevesseldiveddeeperinthewaterthanmanyotherswhatdeep-seaanimalsarelikehoweveryoneshouldprotectthedeepsea/rɪˈsɜːtʃ/v.&n.研究/ˈvesl/n.大船；轮船Listenagain.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04Post-listening2d

Readthequestionsandthinkofmoreyouwouldliketoaskthedeep-searesearcher.Researchtheanswers.Thenaskandanswerwithapartner.Forexample:Whatisthelargestsharkinthedeepsea?Whatisthebottomofthedeepsealike?Whatothervesselsdivedtothebottomoftheocean?Whyisthedeepseaimportanttous?/ˈbɒtəm/n.底部Readtheconversationandunderlinethethreeriversmentioned.3a

waterfall/ˈwɔːtəfɔːl/n.瀑布civilization/ˌsɪvəlaɪˈzeɪʃn/n.文明means/miːnz/n.方式WhichisthelongestriverinChina?Whyareriversimportant?atallcosts无论如何；

不惜一切代价Readtheconversationagainandcompletethetable.3b

RiverCountryLengthImportanceYellowRiver________kmhelpedinthedevelopmentofancient___________NileRiver________kmChinaEgypt5,4646,671civilizations/dɪˈveləpmənt/n.发展Listentotheconversation.Thenrole-playit.3c

ImaginethatyouareYamingorElla.ContinuetheconversationwithapartneraboutothergeographicalfeaturesinChina.3d

Forexample:Ella:CouldyoutellmemoreaboutChina,Yaming?Yaming:Sure!Whatwouldyouliketoknow?Ella:What’sthebiggestdesertinChina?Yaming:It’stheTaklimakanDesert./ˈdezət/n.沙漠ThelargestwaterfallsHuangguoshuWaterfall(黄果树瀑布)ThelargestsaltwaterlakeQinghaiLake(青海湖)ThelargestdesertTaklamakanDesert(塔克拉玛干沙漠)Let’sprotectwaterresources.Evaluation(评价)Completecontent(内容完整)Correctlanguage(语言准确)Clearvoice(自信表达)Groupdiscuss:Whyarebothriversandthedeepseaimportant?Whatcanwedotoprotectthem?Write2-3piecesofslogans:Forexamples:Don’tthrowrubbishintoriversorthesea.Learnaboutwaterecosystemsandtellothers.Supportscientificresearchaboutwater.Groupwork

Riversarethepastandpresentofhumancivilization.Thedeepseamaybethefuture.Toprotectwateristoprotectlifeitself.05SummarySumupwhatyouhavelearned.NaturalwondersDeepSeaDepthatwhichthedeepseabeginsDeepestdiveofawhaleDepth

atwhichtheTitanicrestsDepth

FendouzhereachedtheYellowRivertheYangtzeRivertheNileGreatriversSummary2005,4642,0003,80010,9096,3006,671longest06LanguagePoints词讲练depthn.深度；纵深

常用搭配:indepth在深度上

----deep

adj.深的

----deeplyadv.深深地(抽象程度)1.The_________（depth/deep）ofthewellis10meters.2.Thisriveris20metersin_________（deep/depth）.3.Sheis__________（deep/deeply）interestedinpainting.4.Thewellis30meters________（deep/deeply）.5.翻译：他深深地爱着自己的祖国。

Languagepoints例：Theholeissixmetersindepth.这个洞的深度是六米。Theriveristenmetersdeep.这条河有10米深。Hewasdeeplymovedbythestory.听了这个故事他深受感动。depthHeloveshismotherlanddeeply.depthdeeplydeepLanguagepoints词讲练unusualadj.特别的；不寻常的

反义词：usualadj.平常的unusually

adv.不寻常地usually

adv.通常常用句型：It’sunusualtodosth.去做......是不寻常的。例句：It’sunusualtoseesnowinthiscityinOctober.

十月在这座城市看到雪是很不寻常的。

Shehasanunusualhobby—collectingoldstamps.

她有个特别的爱好——收集旧邮票。1.It’s_________（usual/unusual）forhimtobelateforschool.2.Her_________（usual/unusual）ideasurprisedeveryone.3.翻译：在这个小镇看到明星是很不寻常的。unusualunusualIt’sunusualtoseeastarinthissmalltown.Languagepoints词讲练development

n.发展；壮大developv.发展

形容词：developing（发展中的）developed（发达的）用法：作名词，常用搭配thedevelopmentofsth.（……的发展），如economicdevelopment（经济发展）。例句：Thedevelopmentoftechnologyhaschangedourlifealot.（科技的发展极大地改变了我们的生活。）1.The__________（develop）ofAIisveryfastnow.2.Chinaisa___________（developing/developed）country.3.翻译：教育的发展对国家至关重要。developmentdevelopingThedevelopmentofeducationiscrucialforacountry.07ExerciseExercise1.Thescientistswill______(潜水)intothedeepseatostudytheunusualcreatures.2.Westilldon'tknowtheexact______(深度)ofsomepartsoftheocean.3.TheYellowRiverisveryimportanttoChinese___________(文明).4.TheTaklimakanisthelargest______(沙漠)inChina.5.The________(deep)partoftheoceanisabout11,000metres.6.The____________(develop)ofancientEgyptdependedontheNileRiver.7.Somedeep-seaanimalslook_________(usual)andevenscary.8.Weshouldprotectour“motherriver”byall______(mean).9.The________(deep)oftheswimmingpoolforkidsis1.2metres.10.The_______(bottom)oftheseaisdarkandquiet.11.Ofallthestudentsinourclass,Lucylivesthe_______(far)fromschool.divedepthcivilizationdeepestdesertdevelopmentunusualmeansdepthbottomfarthestExercise1.TheYellowRiver