Unit 1 Section A 1a-2d 课件 2026-2027学年人教版英语九年级上册

Unit1TheChangingWorldSectionA(1a-2d)01TeachingObjectives语言能力：学生能够掌握本课时交通、环境、生活变化相关核心词汇，熟练掌握usedtodo核心句型，能听懂关于家乡今昔变化的听力对话，精准获取关键信息，同时能运用目标句型简单口头描述家乡的过往与现在的变化，完成基础口语交际。思维品质：学生通过对比家乡过去与现在的环境、交通、生活状况，锻炼对比分析与归纳总结的逻辑思维，能够简单思考生活变化的成因，学会辩证看待社会发展带来的改变，初步形成理性的思辨能力。学习能力：学生在听力练习、小组对话练习和角色扮演的活动中，掌握抓取听力关键信息的学习方法，主动归纳核心句型用法，提升自主探究与合作交流能力，养成主动运用英语谈论生活话题的学习习惯。文化意识：学生通过学习家乡的各项发展变化，真切感受社会发展与生态治理的成果，体会生活环境的改善，树立热爱家乡、保护环境的意识，理解发展与环保并存的生活理念，提升家国情怀与社会责任感。02TeachingPoints教学重点：本课时重点是学生掌握描述今昔变化的核心词汇与usedtodo句型的基本用法，能够准确听懂听力材料中关于环境、交通、生活的对比信息，熟练运用目标句型进行口语交流，完成话题对话与情景表达任务。教学难点：本课时难点是学生能够准确区分usedtodo与现在时态的用法差异，规避句式运用错误，同时在口语表达中灵活运用句型清晰地描述生活变化，精准辨析听力中过去与现在的不同信息，形成连贯规范的语言表达。03SectionA(1a-2d)Lookandshare.1.Howarethesetwophotosdifferent?Themaindifferenceistheenvironment.Theoldblack-and-whitephotoshowsabare,drylandwithonlyonelonelytree,whichlooksverydesolate.Thenewphotoshowsawide,greengrasslandwithaclearriverwindingthroughit,fulloflifeandbeauty.Theplacehasturnedfromadry,lifelessareaintoavibrant,healthyecosystem.Lookandshare.2.Whydoyouthinktheseplaceschangedsomuch?Ithinkthegreatchangeismainlyduetohumaneffortstoprotectandrestoretheenvironment.Peoplemayhavecarriedoutlarge-scaletree-plantingandgrass-growingprojectstostopdesertification.Overtime,theseeffortshelpedbringbackthevegetation,improvethesoil,andmaketheriverclearagain.Itshowsthatwithcareandhardwork,wecanturnabadenvironmentintoagoodone.Lookandshare.3.Howhasyourhometownchangedovertime?Myhometownhaschangedalot.Itusedtobeasmalltownwithnarrowroadsandfewgreenareas.Now,theroadsarewideandclean,andtherearemanyparksandtreeseverywhere.Therearealsomoretallbuildingsandmodernfacilities.Lifeismuchmoreconvenient,butwealsopaymoreattentiontoprotectingtheenvironmenttokeepourhometownbeautiful.ThephotosshowchangesinLiRui'shometownovertheyears.Whatarethechanges?Howdotheymakeyoufeel?LiRui'shometownwascoveredwithsandmanyyearsago.Butnowitiscoveredwithbeautifultrees.Moreandmorepeoplearelivinghere.I'mamazedandIfeelhappy.1.WhydoesGeorgecallLiRui?2.WhendidGeorge'sfatherlastvisittheplace?3.WhatistherelationshipbetweenGeorge'sfatherandLiRui'sgrandfather?Listentoatelephoneconversation.Thenanswerthequestions.HecallsLiRuibecauseheandhisfatheraregoingtovisitLiRui'shometownandhewantsLiRuitobetheirguide.Theyaregoodfriends.Helastvisitedtheplaceabout20yearsago.Role-playing.Hello,George.Hi,LiRui.Guesswhat!Myfather,Bob,andIaregoingtovisityourhometown.Couldyoubeourguide?Sure!I'dloveto!Wonderful!Youknow,myfather'slastvisitwasabout20yearsago.Hebecameagoodfriendofyourgrandfather.Grandpawillbesohappy.Theyhaven'tseeneachotherforages!Yes,andmyfatherreallywantstoseehowtheplacehaschangedsincehelastvisited.LiRui:George:LiRui:George:LiRui:George:LiRuiisnowshowingGeorgeandhisfatheraroundherhometown.Listentotheirconversationandcompletethetable.Past·Ittook(1)_________toreachthetown.·Goingtoschoolbybustooknearly(2)__________overroughroads.Theyusedto(3)______________toseeadoctor.Theydidn'thaveanysuchplacesfor(4)__________.Thehillswerecoveredwith(5)______.halfaday40minuteshavetotravelfarshoppingsandPresent·Withthenewroads,ittakesonly(6)___________.·Goingtoschooltakesonly(7)__________.Thetownhasbuiltanew(8)_______.Theynowhavea(9)___________downthestreet.Theyarenowcoveredwith(10)____________.an/onehour15minuteshospitalsupermarketbeautifultreesRole-playing.LiRui:Whatdoyouthinkofyourtripsofar?Bob:Amazing!WhenIfirstvisitedhere,ittookhalfadaytoreachthetown.Now,withthenewroads,ittakesonlyanhour.LiRui:Yes.WhenIwasachild,thebustooknearly40minutesoverroughroadstogettoschool.Now,ittakesonly15minutes.Bob:Lifeismucheasier!LiRui:Notonlythat.Weusedtohavetotravelfartoseeadoctor,butnowourtownhasbuiltanewhospital.Bob:Great!Anddidn'tIseeasupermarketdownthestreet?LiRui:Yes.Wedidn'thaveanysuchplacesforshoppinguntil10yearsago.Bob:Butthebiggestchangeisonthehills.Theyusedtobecoveredwithsand.LiRui:Andnowtheyhavebeencoveredwithbeautifultrees!Discussthechangesin1c.Howdoyouthinktheyhappened?Greatchangeshavetakenplaceintransportation,medicalcare,shoppingandtheenvironment.Newroadsmaketripsmuchfaster;anewhospitalandasupermarketbringeasierdailylife;tree-plantingturnssandyhillsgreen.Theseimprovementsmainlycomefromlocalgovernment'sinfrastructurebuilding,economicgrowth,long-termecologicalprotection,andtheeffortsofalllocalpeople.Rankthefollowingproblemsfrom1to4,with1beingtheworst.Giveyourreasons.sandstormswatershortagefarmlandshortagelackoftechnology1.watershortage2.sandstorms3.farmlandshortage4.lackoftechnologyReasons:Ifthereisnotenoughwater,peoplecan'tliveorgrowfoodwell.Sandstormshurtpeople'shealthanddamagecrops.Andnotenoughlandmeansnotenoughfood.Technologyisimportant,butpeoplecanstillworkwithoutit.ListentotheconversationbetweenGeorge'sfatherandLiRui'sgrandfather.Whatproblemsin2adidtheymention?Bob:I'mamazedbyhowgreenyourhometownhasbecome!Grandpa:Haveyouseenthecornfieldsoutsideofthetownyet?Bob:Yeah!They'rehuge!Grandpa:Thereusedtobesandstormsallthetime,andthefieldsweregettingsmallerandsmaller.Then,afteronebigsandstorm,wedecidedtodosomething.Bob:Whatdidyoudo?Grandpa:Wefoundasmallbush.Ithadlongrootsthatcouldholdthesoiltogether.Webeganplantingitinsandyareas.Thegovernmentprovidedsupporttoo.Bob:Wasn'titdifficulttoplantsomanybushes?Grandpa:Yes,itwas.Atthebeginning,weworkedbyhand.Later,wehadmachinestohelp.Wehaveplantedmanybushesandtreessincethen.Therearefewersandstormsnowandtheenvironmentisgettingbetter.Ithasalsoimprovedourlives.Everyonehasbecomericherandhappier.Theymentionedsandstormsandfarmlandshortages.Listenagainandfillinthetable.Howhastheenvironmentaffectedlocallives?Past·Thereusedtobe(1)__________allthetime,andthe(2)_____weregettingsmallerandsmaller.·Localsworkedby(3)______.sandstormsfieldshandAction·Localsfoundabush.Ithad(4)_____rootsthatcould(5)_____thesoiltogether.·Theybeganplantingitinsandy(6)______withthegovernment'ssupport.·Theyhad(7)_________tohelp.longholdareasmachinesPresent·Thecornfieldsare(8)______.·Theyhaveplantedmanybushesand(9)______sincethen.·Thereare(10)______sandstormsnowandtheenvironmentisgetting(11)______.·Ithasimprovedlocallives.hugetreesfewerbetterRole-playing.Bob:I'mamazedbyhowgreenyourhometownhasbecome!Grandpa:Haveyouseenthecornfieldsoutsideofthetownyet?Bob:Yeah!They'rehuge!Grandpa:Thereusedtobesandstormsallthetime,andthefieldsweregettingsmallerandsmaller.Then,afteronebigsandstorm,wedecidedtodosomething.Bob:Whatdidyoudo?Grandpa:Wefoundasmallbush.Ithadlongrootsthatcouldholdthesoiltogether.Webeganplantingitinsandyareas.Thegovernmentprovidedsupporttoo.Bob:Wasn'titdifficulttoplantsomanybushes?Grandpa:Yes,itwas.Atthebeginning,weworkedbyhand.Later,wehadmachinestohelp.Wehaveplantedmanybushesandtreessincethen.Therearefewersandstormsnowandtheenvironmentisgettingbetter.Ithasalsoimprovedourlives.Everyonehasbecomericherandhappier.Discusshowtheproblemsin2bweresolved.A:Theareausedtobecoveredwithsand.B:Whatdidtheydotosolvethisproblem?A:Theyplantedbushesandtrees.Thelandhasbecome...Sample.A:Theareausedtohaveterriblesandstormsveryoften.B:Whatdidtheydotosolvethisproblem?A:Theyplantedlotsofbushesandtreesonthebarehills.Thetreescanholdthesoilandslowdownthewind,sosandstormshavebecomemuchlessfrequentnow.A:Thetownusedtofaceaseriousfarmlandshortage.B:Whatdidtheydotosolvethisproblem?A:Theyimprovedthesoilbystoppingdesertificationandbuiltreasonablefarmlandplans.Morefertilelandwasdeveloped,andtheyalsousedscientificfarmingtomaketheexistingfarmlandmoreproductive.04Vocabularyrough/rʌf/adj.崎岖的例句：Thebarkofthetreeisrough.这棵树的树皮很粗糙。havearoughtime过得不顺；经历困难 inrough粗略地；草稿形式roughly/ˈrʌfli/adv.粗略地；大约；粗暴地 roughness/ˈrʌfnəs/n.粗糙；粗暴易混辨析：roughvs.toughrough侧重“表面不平、路况差”，也可形容“过程不顺、态度粗鲁”。tough侧重“困难的、艰难的；坚韧的”，多形容任务、经历或人。易混辨析：roughvs.ruderough形容“言行不礼貌、粗鲁”时，侧重“不细致、缺乏教养”。rude侧重“冒犯、无礼”，语气更强，指直接违反社交礼仪。becoveredwith被……覆盖例句：Thegroundiscoveredwiththicksnow.地面被厚厚的积雪覆盖。易混辨析：becoveredwith/becoveredbybecoveredwith侧重表面状态、景象（静态）翻译：布满、盖满（不突出“谁去覆盖”）后接：覆盖物（雪、树叶、灰尘、植物等）becoveredby被动动作、执行者/外力（动态来源）；也可表“被……遮挡、由……承担”翻译：被（某人/某物）遮盖；由……承担后接：动作发出者、工具、遮挡物、机构lack/læk/n.缺乏例句：Lackofsleepmadehimtiredallday.缺乏睡眠让他一整天都无精打采。lackof………的缺乏 belackingin…在……方面不足lacking/ˈlækɪŋ/adj.缺少的；不足的 lack/læk/v.缺乏；没有易混辨析：lack(n./v.)vs.shortof(adj.短语)lack作名词时常用(a)lackofsth.；作动词时直接接宾语lacksth.。shortof是形容词短语，必须搭配be动词，结构为beshortofsth.。易混辨析：lackvs.needlack侧重“