Unit4（第2课时）SectionA3a-3d-课件人教版英语八年级下册

人教版英语8年级下册培优备课精做课件Unit4（第2课时）SectionA3a-3dUnit4TheWondersofNature授课教师：Home.

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2026年3月30日Whatisthenameoftherivermentionedinthevideo?It’stheYellowRiver.IsitthelongestriverinChina?No,thelongestriveristheYangtzeRiver.DoyouknowanythingelseabouttheYellowRiverortheYangtzeRiver?一、根据所给提示完成单词。(5分)1.Scientistsaretryingtofindwaystogrowcropsinthe________(沙漠).2.Wetookmanyphotosinfrontofthe____________ (瀑布)lastweekend.3.［扬州模拟］Remembertocleanthe____________ (表面)ofthewindowsbeforetheparty.desertwaterfallsurface4.Different______________(文明)havetheirownspecialculturesandtraditions.5.The___________(发展)ofsciencehaschangedourlivesalot.civilizations

development

3aReadtheconversationandunderlinethethreeriversmentioned.Yaming:Welcomeback,Ella!Howwasyourtrip?Ella:Itwasgreat!WesawtheHukouWaterfallontheYellowRiver.IsthatthelongestriverinChina?Yaming:No,theYangtzeRiveristhelongestriverinChina.Ittravelsthefarthestandisabout6,300kilometreslong.TheYellowRiveris5,464kilometreslongandisthesecondlongest.

Bytheway,doyouknowwhyit’scalledtheYellowRiver?Ella:Becauseit’syellow?Yaming:Right.Somepartsoftherivercarrybrownandyellowearth.顺便提一下；附带问一句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.不惜任何代价RiverCountryLengthImportanceYellowRiver

NileRiverChina

Egypt3bWhatdoYamingandEllaknowabouttheserivers?Readtheconversationagainandcompletethetable._______kmhelpedinthedevelopmentofancient__________________km5,464

6,671civilizations二、用所给词的适当形式填空。(5分)6.Agoodfriendtrulycaresaboutyouandwouldlike____________(do)anythinggoodforyou.7.Withthe________________(develop)ofChina,people’slivesarebetterandbetter.tododevelopment点拨：the后需接名词，develop的名词形式为development,withthedevelopmentof表示“随着……的发展”，develop的形容词有两个：developed(发达的)、developing(发展中的)。8.SunWukonghasamagicalstick,anditcanchangeits________(long).9.Themandidn’trealizethe________________(important)ofhealthuntilhegotillseriously.10.Billlivesthe________(far)fromtheschool.Hehastogetupearlytocatchtheearlybus.lengthimportancefarthest3cListentotheconversation.Thenrole-playit.Ella:CouldyoutellmemoreaboutChina,Yaming?Yaming:Sure!Whatwouldyouliketoknow?Ella:What’sthebiggestdesertinChina?Yaming:It’stheTaklimakanDesert.Ella:Doyouknow...?3dImaginethatyouareYamingorElla.ContinuetheconversationwithapartneraboutothergeographicalfeaturesinChina.OthergeographicalfeaturesinChina三、根据汉语意思完成句子。(12分)11.这些学生想要在博物馆里了解关于古代中国的历史。

Thestudentswantto________________thehistoryofancientChinainthemuseum.12.我们将不惜任何代价保护这些宫殿。

Wewillprotectthesepalaces________________________.learnaboutatallcosts13.萨姆和汤姆都会敲鼓，但是萨姆比汤姆敲得要好。

________Sam________Tomcanplaythedrums,butSamplaysthembetterthanTom.14.我今天下午要去超市。顺便问一下，你需要什么吗？

I’mgoingtothesupermarketthisafternoon.________________________,doyouneedanything?BothandBytheway

15.对古代文明的研究有助于我们理解社会是如何随着时间发展的。

Thestudyof_____________________helpsusunderstandhowsocietiesdevelopedovertime.ancientcivilizations6,300kilometreslong表示“6300千米长”，是“基数词+单位词+形容词”结构。1.Ittravelsthefarthestandisabout6,300kilometreslong.它流经的距离最远，约有6300千米长。(教材P343a)物体长、宽、高、深等的表达基数词+单位词+形容词(long、wide、high、deep等)基数词+单位词+in+名词(length、width、height、depth等)Theriveris20metreswide(=20metresinwidth).这条河宽20米。2.helpedinthedevelopmentofancientcivilizations有助于古代文明的发展(教材P343b)[不可数名词]由“develop(v.发展)+-ment(名词后缀)”构成。(with)thedevelopmentof(随着)……的发展

WebelieveChinawillcontinuetoleadtheworldintechnologydevelopment.我们相信，中国在科技发展方面将继续引领世界。developmentn.发展；壮大

developmentn.发展；壮大developing

adj.发展中的developv.发展；壮大developed

adj.发达的四、完形填空。Asweallknow,theYangtzeRiveristhelongestriverinChina.ButtodayI’dlovetointroduceanotherfamousrivertoyou—theYellowRiver.TheYellowRiveristhesecond__16__riverinChina.16.()A.longest B.highest C.biggest D.shortestAThe“yellow”initsnameisfromthemud(泥)andsand.About90%ofthemudandsandintheYellowRiver__17__theLoessPlateau(黄土高原).17.()A.caresabout B.comesfrom C.thinksof D.shoutstoBTheLoessPlateauisloose(松的)andeasytowashaway.Asaresult,intheseasonof__18__rainfall,alotofmudandsandgoesintotheYellowRiver.18.()A.simple B.heavy C.huge D.lightBTheYellowRiverstartsfromtheQinghai-XizangPlateauanditsshape(形状)is__19__to“几”.ItrunsfromwesttoeastthroughnineprovincesandautonomousregionsandfinallyrunsintotheBohaiSea.19.()A.different B.hard C.similar D.connectedCItcoversan__20__ofabout752,443squarekilometres.TheYellowRiverisabout5,464kilometreslong.__21__,itisalittleshorterthantheYangtzeRiver.20.()A.area B.weight C.length D.depth21.()A.Actually B.Finally C.Luckily D.QuicklyAAInChinesehistory,theYellowRiveristhemostimportantbirthplaceofChinesecivilization.__22__Chinesepeoplelivedonthisland,workedhardandcreatedarichculture.22.()A.Modern B.Ancient C.Young D.RichBToday,theareaisstillveryimportant__23__farming.What’smore,theYellowRiver__24__animportantroleinChineseculture.23.()A.as B.in C.for D.with24.()A.plays B.makes C.brings D.takesCAPeoplehavecreatedalotofpoems(诗歌),paintings,andsongsaboutit.TheYellowRiverisa(n)__25__ofChina,andwecallitthe“MotherRiver”.25.()A.group B.example C.prize D.symbolD五、阅读理解。MyfamilyhadawonderfulholidayinChinaafewyearsago.Wevisitedseveralcitiesinelevendays.OurfirststopwasBeijing,andNancywasourguide.Sheledustoalltheimportantplaces,suchastheGreatWall,theForbiddenCityandthehutongs.HerEnglishwasperfect,andshecouldexplain(解释)theirhistoryandculturewell.Wewerereallythankfulforherworkasitaddedvaluetoourtrip.Next,wewenttoChengduandenjoyedeverythingthere.Likeeverybodyelse,wefellinlovewiththecutepandas.ButthedaysinZhangjiajieturnedouttobeourfavouritepartofthetrip.WeheadedstraighttoTianmenMountainonDayOne.Withitsglass-bottomedbridgesandcliffpaths,thisplaceisnotforweakhearts.Butthepicturesque(优美的)viewstookmybreathaway.Icouldn’thelptakingpictures.Bytheendofthatday,Ihadseveralhundredmorepicturesonmyphone.Wewerenotsoluckythenextdayastheweatherturnedbad.Itwasharderforustoseethesceneryclearly.ThatsceneryinspiredthemountainsinthefilmAvatar(《阿凡达》),andwewerelookingforwardtoseeingitwithourowneyes.Itwassuchapity.AftersayinggoodbyetoChina’sfirstnationalpark,weheadedtoShanghaiforthelastlegofourtrip.Wehadagreattime,andthejourneystillfeels