Unit 1 The Changing World Section A 1a-4c 课件（内嵌视频）2026-2027学年人教版英语九年级上册

2026人教版英语九年级上册Unit1TheChangingWorldSectionA1a-4cU1,G9,A时态一般过去时现在完成时核心概念动作发生、完结于过去动作始于过去；侧重动作对现在造成的影响、结果，或是状态持续到现在肯定句主语+动词的过去式主语+have/has+动词过去分词否定句主语+didn't+动词原形主语hven't/hasn't+动词过去分词一般疑问句Did+主语+动词原形？Have/Has+主语+动词过去分词标志性时间状语yesterday,last+时间(lastweek/lastyear),...ago(3daysago),in+过去年份(in2020),justnowalready,yet,ever,neversince+时间点，for+时间段sofar,inrecentyears对照例句Imovedhere3yearsago.HeopenedtheshoplastFriday.Ihavelivedherefor3years.Hehasopenedmanyshops.解题判断技巧句中有明确过去时间表达经历、动作延续、过去事件影响现在U1,G9,AU1,G9,AFiilintheblankswiththeproperformsoftheverbsinthebrackets.1.I________________(finish)myhomeworkanhourago.2.We________________(notsee)eachothersince2020.3.She________________(visit)themuseumlastsummer.4.Myfather________________(build)twonewhousessofar.5.-__________youever__________(be)toGuizhou?_Yes.I________________(go)therein2025.finishedhaven'tseenvisitedhasbuiltHavebeenwentU1,G9,A1.People'slivingconditionsaremuchbetterthantheywereinthepast.Nowwetakesubwaystotravel,whilewemainlywalkedorrodebikesyearsago.2.Thepopularityofmobilepaymenthasgreatlyinfluencedourdailyshopping.High-speedtrainsmakelong-distancetripseasier,andtheyhavechangedourlifestylealot.3.Wefindoutthatgovernmentinvestmentinroadsleadstothegreatchangesofourtown.Moreyoungpeoplecomebacktoworkhere,sothelocaleconomydevelopsfast.4.Icanintroducebeautifulsightsofmyhometowntopeopleonlinetoattractmoretourists.Iwillstudyhard,soIcancomebackandhelpbuildmyhometownwhenIgrowup.Q3Greatchangeshavetakenplaceinmyhometown.Thestreetsarewider.Therearemoretallbuildings.Peopole'slifeisQ1Intheoldphoto,therewereoldsmallhousesandfewtrees.Butinthenewphoto,therearemanytallbuildingsandmoregreentrees.Q2Becausethecitydevelopsfast.Moremoneyisspentonbuildingnewhousesandpublicfacilities.Peoplewantbetterlivingconditions.U1,G9,AWhatbringsaboutchanges?U1,G9,ABIGQuestionManyfactorsbringaboutchanges.Governmentenvironmentalpolicies,people'shardworkandenvironmentalprotectionmaketheplacebecomebetterandbetter.Lotsofthingshavebroughtaboutthesegreatchanges.First,thegovernmenthasmadestrictrulestoprotectnature.Second,localpeoplehaveplantedplentyoftreesandstoppedpollutingtheriver.Third,peoplehaverealizedtheimportanceofecologicalprotection.Alltheseactionshavemadetheenvironmentmuchmorebeautiful.Answers:Greatchangeshavetakenplacearoundme.Thestreetshavebecomemuchcleaner.Moretreeshavebeenplanted,andtherearemorenewpublicparks.Peoplehavestoppedlittering,andourlivingenvironmenthasbecomenicerandnicer.Manygreatchangeshavetakenplacearoundmeinrecentyears.First,manynewroadsandparkshavebeenbuiltinmyneighbourhood.Second,therivernermyhomehasbecomecleanagainafterpeoplestoppedpollutingit.Third,morepeoplehavestartedtogooutbybikeinsteadofbycartoprotecttheair.Ireallyenjoythesewonderfulchanges.Q1GreatchangeshavetakenplaceinLiRui'shometown.Inthepast,therewerefewtreesandmuchbareland.Nowlotsoftreeshavebeenplanted,andthewholeareahasturnedgreen.Theoldhouseshavebeenreplacedbynewbuildings.Q2Ifeelreallyhappyandproud.It'swonderfultoseetheenvironmentbecomesomuchbetter.U1,G9,AU1,G9,AQ1----BecausehewillvisitLiRui'shometownwithhisfather,andhewantsLiRuitobetheirguide.Q3----Theyaregoodfriends.Q2----About20yearsago.U1,G9,Ahalfadayanhournearly40minutes15minutestravelfarhospitalshoppingsupermarketsandbeautifultreesU1,G9,AWithgovernmentinvestmentandpeople'shardwork,thetownbuiltroads,hospitalsandsupermarkets.Peoplealsoplantedmanytreestoimprovetheenvironment,sothesegreatchangestookplace./Thesechangesmainlycomefromtwoaspects.First,thegovernmentinvestsmoneyinpublicfacilities:itbuildsnewroadstoshortentraveltime,constructshospitalsandsupermarketstomeetresidents'medicalandshoppingneeds.Second,localpeoplecarryoutafforestation,plantinglotsoftreesonsandyhillstobetterthelivingenvironment.Togetherwithrisinglocaleconomiclevel,allthesefactorsbringgreatchangestothehometown.U1,G9,A1234Sandstormsdestroytheland,pollutetheairandmakefarmlandbecomedesert.Theymakelivingconditionsmuchworse.Badnaturalconditionsslowdowndevelopment,butpeoplecantakemeasurestoimproveitstepbystep.Foodisthebasicneedforpeople.Lessfarmlandmeanswecannotgrowenoughfood,sopeoplewillhavenothingtoeat.Itdirectlythreatenspeople'ssurvival.Wecanintroducenewtechnologyandlearnfromotherplaces.Itisaproblemthatcanbesolvedmoreeasily.U1,G9,ATheymentionedsandstormsandfarmlandshortages.(Grandpa:Thereusedtobesandstormsallthetime,andthefieldsweregettingsmallerandsmaller.)U1,G9,Asandstormsfieldshandlongholdhills/landtechnology/machinesbigger/largertreesfewerbetter/greenerU1,G9,Agreener.Thefarmlandisbecominglargerthanbefore.Fewersandstormshappennow.Answers:1.Moreyoungpeoplereturntoworkandliveinthevillage.2.Farmersgrowcropsinhigh-techgreenhousesandsellproducetobigcities.3.Thevillagedevelopstourismandonlinesalesoflocalgoods.4.Villagersgetnewhouses,newhospitalsandlibrariesforabetterlife.Youngpeoplecomebacktothevillage.Farmingbecomeshigh-tech.Thevillagedevelopstourismandonlinebusiness.Betterhousesandpublicfacilitiesalsoimprovevillagers'lives.KeyWordsinterview,villager,hometown,farm,greenhouse,highway,railway,tourist,attraction,socialistKeyPhrases1.overthelast20years在过去20年里(现在完成时标志性时间状语)2.usedtodo过去常常做某事(现在不再做)3.quitealot相当多；变化很大4.growvegetables种植蔬菜5.high-techgreenhouses高科技温室大棚6.tonsof大量的；成吨的7.helpalot助力很大；帮助良多8.touristattraction旅游景点9.localproducts本地特产10.alloverChina全中国各地11.greatlyimproveone'slives极大改善某人的生活KeySentencePatterns1.现在完成时（描述从过去延续到现在的变化，本课文核心句型）Howhaslifechangedinyourhometownoverthelast20years?过去20年间，你家乡的生活发生了怎样的变化？Havethesechangesgreatlyimprovedyourlives?这些变化极大改善你们的生活了吗？2.usedtodo过去的状况（和现在形成对比）sbusedtodosth某人过去常做某事，如今不再这样Iusedtogrowafewvegetablesonasmallfarm.我从前只在一小块农田种少量蔬菜。3.therebe现在完成句式Therehavebeenotherchanges.还出现了其他变化4.情态动词表推测/肯定Thenewhighwayandrailwaymusthavehelpedalot！新建的公路和铁路一定提供了巨大助力！musthavedone对过去发生事情的肯定推测：想必、一定做了某事5.被动含义句式（build相关）Ourvillagehasjustbuiltanewhospital=Anewhospitalhasbeenbuiltinourvillage.我们村子刚修建了一所新医院。ourU1,G9,AU1,G9,AManyyoungpeoplewenttoworkinbigcities.Grewafewvegetablesonsmallfarms,soldtolocalmarket.OnlylocalmarketsalesOldhouses;lackofperfectpublicsupportingfacilitiesMoreyoungpeoplereturntoliveandworkinthevillage.Uselargehigh-techgreenhouses;growtonsoffruitsandvegetables,selltobigcities.Sellgoodstotourists;alsosellproductsonlineacrossChina.Liveinnewhouses;newlybuildhospitalsandlibraries.U1,G9,A道具准备1.记者：拿本子+笔（模拟采访记录）2.两位村民：可拿仿真菜叶、小篮子，呼应大棚种植3.背景：HometownChanges背景词：youngpeople,high-techgreenhouses,tourism,newhospital,libraryStep1开场（记者上前，语气好奇友善）Step2MrYan回答（神态感慨、欣慰）Step3记者追问‘Step4MsWu讲农业变化（语气自豪）Step5记者点评交通建设Step6MrYan介绍旅游、线上售卖Step7记者询问生活改善Step8MsWu讲住房、公共设施（幸福感强）Step9记者收尾总结现在完成时have/hasdoneU1,G9,ATherearemoretreesandcleanriversnow.Theairismuchfresherthanbefore.Ifeelreallyhappytoliveinsuchabeautifulplace./Morenewroadsandbuseshaveappeared.It'smucheasierforustogoout.Ifeellifeisbecomingmoreconvenient./Peoplehardlyusecashnow.Wecanpayforeverythingwithourphones.Itmakesourlifesoeasyandfast.housing,shopping,school,hospital,transport,restaurant,cinemaU1,G9,A○○○○○○一般过去时（过去发生，有明确过去时间）became;usedtohave;usedtowork(标志词：20yearsago,usedto)现在完成时（动作从过去持续到现在，对现在有影响）haven'tseen;hasjustbuil