Unit4TheWondersofNatureSectionA2a~3d课件人教版英语八年级下册

TheWondersofNatureUnit4SectionAWhatisamazingaboutnature?SectionA

2a-3d010203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，感知自然奇观相关词汇用法。与同伴合理接续对话，运用比较级和最高级，大数字以及跨学科知识交流中外地理知识。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。Learningobjectives04理解海洋和河流对国家文明的形成和发展的历史作用，正确看待人与自然的关系，树立环保意识，坚定文化自信。、Let’swatchandthink.Whatdoyouknowaboutthedeepsea?Let’sfollowFenfouzhetoexplore.Warming-up、Fendouzhe

奋斗者号，是中国自主研发的万米载人潜水器，于2016年立项，由蛟龙号、深海勇士号载人潜水器的研发力量为主的科研团队承担。2020年6月19日，中国万米载人潜水器正式命名为“奋斗者号”。2020年10月27日，奋斗者号在马里亚纳海沟成功下潜突破1万米达到10058米，创造了中国载人深潜的新纪录。11月10日8时12分，奋斗者号在马里亚纳海沟成功坐底，坐底深度10909米，刷新中国载人深潜的新纪录。2021年10月，“奋斗者”号已在马里亚纳海沟正式投入常规科考应用。Background、Thedeepseareferstotheareaoftheoceandeeperthan200meters（海洋里水深超过200米的区域）.Whatisthedeepsea?海洋从岸边到海底分为

4层：浅海（0–200m）：阳光能照到，有植物、鱼多半深海（200–1000m）：光线开始变弱深海（1000–6000m）：完全黑暗超深渊（6000m

以下）：海底最深处，如马里亚纳海沟、Itmakesupmorethan90%oftheentireocean.Nosunlightcanreachit—itisdark,cold,andunderextremelyhighpressure.Whatisthedeepsea?深海的

4

个地理特点1.没有阳光→

完全黑暗2.水温很低→

常年

1℃～4℃3.水压极大→

越深压力越大4.食物很少→

生物靠上层掉落的食物生存、2aWhatdoyouknowaboutthedeepsea?Completethesentenceswiththeinformationfromthepicture.1.Fendouzhereached____.2.Thedeepseabeginsat____.3.TheTitanicrestsat____.4.Awhalecandiveto____.v.&n.潜水；跳水；俯冲BDCA通常认为，深度超过

2,00米

的海域属于深海区域。在这一深度以下，光照几乎消失，水压极大，环境与浅海截然不同，孕育着许多适应极端环境的特殊生物，也有着独特的地质结构。有些鲸鱼，例如柯氏喙鲸，能够下潜到深海区域，其最深下潜记录可达约2,992米

。鲸鱼的这种深潜能力是为了觅食等生存需求，它们在深海的活动也反映了深海生态系统中生物的多样性和适应性。著名的泰坦尼克号邮轮在1912年沉没于北大西洋，其残骸位于约3,800米

的深海处。这一深度的海底环境使得泰坦尼克号的残骸保存状况具有独特的研究价值，也让人们对其沉没的历史事件有了更多的探索线索。“奋斗者”号是中国自主研发的全海深载人潜水器，它成功下潜至马里亚纳海沟10,909米

处，这一深度彰显了中国在深海探测领域的先进技术，也为人类探索深海奥秘、开展深海科学研究提供了重要支撑。、Aclassisaskingadeep-searesearchersomequestionsafterhistalk.Readthequestionsfirst.2b☐wherethedeepseabegins☐whypeopleareresearchingthedeepsea☐whichChinesesubmersiblediveddeeperinthewaterthanmanyothers☐whatdeep-seaanimalsarelike☐howeveryoneshouldprotectthedeepseaListenandtickthetopicstheydiscuss.v.&n.

研究；调查n.潜水艇Tip:首先，阅读题目，抓住关键词(特殊疑问词

、动词等)。然后，听中听到话题关键词或同义词时，确定答案。、Listenagain.Completethesentenceswiththefactsfromtheconversation.2c1.Peoplestilldon’tknowmuchaboutthe_________.2.In_________,China’sFendouzhedivedintothedeepseaandfilmedit.3.Someanimalshaveunusualabilities.Someare_________butcan“_________”.Somecanevencreatetheirown__________.4.Thereisrubbishevenat_________metresdeep.deepsea/oceanfloor2020blind11,000seelightTip:听前分析空缺内容(名词、年份、动词、形容词、数字等)。听中抓取细节信息，先记录关键词，听完后再补全完整单词。、MsGao:Thankyouforthewonderfultalk,MrJones.Now,doesanyonehaveanyquestions?Emma:Ido!Whyaresomanycountries______________________?MrJones:Well,________isonereason.Wedon'tknowenoughabouttheoceanfloor.FuXing:Irememberthatin2020,China'sFendouzhe_______________theMarianaTrenchthanmanyothersubmersiblesintheworldandfilmedit.ButIdidn'tseeanydeep-seaanimals.Whataretheylike?Listenagainandfillintheblanks.researchingthedeepseacuriositydiveddeeperinto感谢琼斯先生的精彩演讲。为什么如此多的国家都在研究深海？海底中国的奋斗者号在马里亚纳海沟下潜得比世界上许多潜水器都神，还拍摄了影像“形容词/副词比较级+than”表示两者（人或事物）的比较。、MrJones:Well,manydeep-seaanimalsare____________________.Someanimalsareblind,buttheycan"see"aswellas

others.Someeven__________________!Peter:Cool!Arethereanyothersurprisingfactsaboutthedeepsea?MrJones:Didyouknowthatthere'srubbishevenat11,000metresdeep?That________manypeople.MsGao:That'sterrible!Weshoulddosomethingaboutit.MrJones:You'reright!largeandunusualcreatetheirownlightshocked有些动物没有视力，却能和其他动物一样“感知”周围。自己发光感到震惊“as+形容词或副词原形+as”为同级比较，表示两者在某一方面相同。anyother+名词复数，表示“还有其他……吗？”aswellas表示“和……一样好”、2dReadthequestionsandthinkofmoreyouwouldliketoaskthedeep-searesearcher.●Whatisthelargestsharkinthedeepsea?●Whatisthebottomofthedeepsealike?●Whyisitimportanttoresearchthedeepsea?●Whatother

vesselsdivedtothebottomoftheocean?●Whatdodeep-seaanimalsusuallyeattosurvive?●Howcoldisthewaterinthedeepsea?●Whattoolsdoresearchersusetostudythedeepsea?●...bottom...的底部、Researchtheanswers.P33●Whatisthelargestsharkinthedeepsea?

●Whatisthebottomofthedeepsealike?

●Whyisitimportanttoresearchthedeepsea?

●Whatothervesselsdivedtothebottomoftheocean?

●Whatdodeep-seaanimalsusuallyeattosurvive?

●Howcoldisthewaterinthedeepsea?

●Whattoolsdoresearchersusetostudythedeepsea?ThelargestsharkinthedeepseaistheGreenlandshark

(格陵兰鲨).Itisusuallydark,cold,andcoveredwithsoftsedimen(沉积物).OthervesselsincludeTrieste(迪里雅斯特号)andAlvin(阿尔文号).Ithelpsuslearnaboutoceanlifeandgetusefulthingsforourlives.Theyusuallyeatothersmallanimalsororganicdebris(有机碎屑).Itisverycold,usuallyaround0-4℃.ResearchersusevesselslikeFendouzheandcamerastostudythedeepsea.、Thenaskandanswerthequestionswithapartner.Whatisthelargestsharkinthedeepsea?ThelargestsharkinthedeepseaistheGreenlandshark.、Let’swatchandthink.Whatwonderofnatureisitinthevideo?Newdrills、HukouWaterfall壶口瀑布是黄河干流瀑布。东濒山西省临汾市吉县壶口镇，西临陕西省延安市宜川县壶口镇，为两省共有旅游景区。南距陕西省西安市350千米；北距山西省太原市387千米。

壶口瀑布是中国第二大瀑布，世界上最大的黄色瀑布。黄河奔流至此，两岸石壁峭立，河口收束狭如壶口，故名壶口瀑布。瀑布上游黄河水面宽300米，在不到500米长距离内，被压缩到20—30米的宽度。1000立方米/秒的河水，从20多米高的陡崖上倾注而泻，形成“千里黄河一壶收”的气概。、Readtheconversationandanswerthequestions.1.WhatwaterfalldoYamingandEllamention?2.WhyistheYellowRivercalled"yellow"?3.IsEllainterestedinrivers?TheHukouWaterfall.Becausesomepartsoftherivercarrybrownandyellowearth.Yes.、3aReadtheconversationandunderlinethethreeriversmentioned.River_______________________________________YellowRiverYangtzeRiverNileRiver、、Readtheconversationandanswerthequestions.1.WhatwaterfalldidEllavisitduringhertrip?ShevisitedtheHukouWaterfallontheYellowRiver.TheYellowRiver.TheYangtzeRiverisabout836kilometerslongerthantheYellowRiver.2.WhatisthesecondlongestriverinChina?3.HowmanykilometreslongeristheYangtzeRiverthantheYellowRiver?4.WhatothernamedopeoplecalltheYellowRiverinChina,andwhy?Peoplecallit“motherriver”inChina,becauseitisveryimportanttoChinesehistoryandculture.、3bWhatdoYamingandEllaknowabouttheserivers?Completetheinformationaboutthethreerivers.RiverCountryLengthFeatureYellowRiverChina_____kmthesecondlongestriverin______YangtzeRiver____________kmthe_______riverinChinaNileRiver____________kmthelongestriverin_______ChinaAfrica5,4646,3006,671ChinalongestAfricaBoththeYellowRiverandtheNileRiverhelpedinthedevelopmentofancient___________.civilizations、Let’sreadthenumbers!9,613ninethousandsixhundredandthirteen59,613fifty-ninethousandsixhundredandthirteen59,613.78fifty-ninethousandsixhundredandthirteenpointseveneight259,613twohundredandfifty-ninethousandsixhundredandthirteen、LanguagePointsYaming:Welcomeback,Ella!Howwasyourtrip?Ella:Itwasgreat!WesawtheHukouWaterfallontheYellowRiver.IsthatthelongestriverinChina?Yaming:No,theYangtzeRiveristhelongestriverinChina.Ittravelsthefarthestandisabout6,300kilometreslong.TheYellowRiveris5,464kilometreslongandisthesecondlongest.Bytheway,doyouknowwhyit'scalledtheYellowRiver?Ella:Becauseit'syellow./ˈwɔːtəfɔːl/瀑布它流经的距离最远，大约有6300千米长。顺便问/说一下你知道它为什么被称为黄河吗？宾语从句由why引导，宾语从句用“主语+谓语”的陈述语序。、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.泥土埃及古代文明......和......(两者都......)发展不惜一切代价；无论如何了解、Listentotheconversation.Thenrole-playit.3cCriteria(标准)Score1.Beaccurate!(发音准确)2.Noticethestress!(注意重音)3.Bevivid!(表演生动)4.Beemotional!(情感充沛)、What’stheYellowRiverlikenow?Postreading、1.Whatshouldwedo?WeshouldprotecttheYellowRiveratallcosts.2.HowtoprotecttheYellowRiver?Savewaterandneverwasteit.Donotlitterordumpwasteintotheriver.Stopfactoriesfrompollutingtheriverwater.Plantmoretreestokeepthesoilfrombeingwashedaway.TellmorepeopletocareforandprotecttheYellowRiver.Discussion、WhatothergeographicalfeaturesinChinadoyouknow?、PictureEnglish"Superlative"insimpleEnglish🏜️TaklimakanDesertThelargestdesertinChina🏔️MountQomolangmaThehighestmountainintheworld/inChina🌊QinghaiLakeThebiggestinlandlakeandbiggestsaltwaterlakeinChina🌊Yan