Unit 1 The Changing World Section A 1a-2d 课件（内嵌视频）2026-2027学年人教版英语九年级上册

人教版九年级英语（上）Unit1Thechangingworld第一单元不断变化的世界SectionAWhatchangeshaveplacearoundyou?你周围发生了哪些变化？(1a-2d)在本单元中，你将：Inthisunit,youwill1.talkabouthowthingsaredifferentfromthepast.谈论事物与过去相比有何不同。2.discusshowchangeshaveinfluencedourlives.讨论变化是如何影响我们生活的。3.findouthowchangeshappened.弄清楚变化是如何发生的。4.explorewhatyoucandoforyourhometown.探究你能为家乡做些什么。在本课中，您将:1.学习新单词和短语：bringabout,rough,becoveredwith,sandstorm,farmland,shortage,lack,bush,root,soil,sandy,government,support,corn2.能介绍身边的变化：①Weusedto...,butnow...②Therearemore/fewernow...学习目标导入新课-欣赏视频ThisvideoisaboutthechangesinLiRui'shometown.Andtoday,we'regoingtoexplorethisplaceandstudyitindepth.讲解新课---1a部分ThephotosshowchangesinLiRui’shometownovertheyears.Whatarethechanges?Howdotheymakeyoufeel?这些照片展示了李锐家乡多年来的变化。都有哪些变化呢？这些变化给你怎样的感受？ LiRui'shometownwascoveredwithsandmanyyearsago.Butnow,itisfullofbeautifultrees.Manyhistoricalrelicshavealsobeenpreserved.Moreandmorepeoplearelivinghere.I'mamazedandIfeelhappy.李锐的家乡多年前曾被沙子覆盖。但如今，这里长满了漂亮的树木。也保留了许多历史遗迹。越来越多的人在此居住。我很惊讶，也感到开心。讲解新课---1b部分Listentoatelephoneconversation.Thenanswerthequestions.听一段电话对话，然后回答问题。（用橡皮擦擦除可显示答案）1.WhydoesGeorgecallLiRui?2.WhendidGeorge’sfatherlastvisittheplace?3.WhatistherelationshipbetweenGeorge’sfatherandLiRui’sgrandfather?HecallsLiRuibecauseheandhisfatheraregoingtovisitLiRui’shometownandhewantsLiRuitobetheirguide.Helastvisitedtheplaceabout20yearsago.Theyaregoodfriends.讲解新课---1b部分听力文稿LiRui:Hello,George.George:Hi,LiRui.Guesswhat!Myfather,Bob,andIaregoingtovisityourhometown.Couldyoubeourguide?LiRui:Sure!I’dloveto!George:Wonderful!Youknow,myfather’slastvisitwasabout20yearsago.Hebecameagoodfriendofyourgrandfather.LiRui:Grandpawillbesohappy.Theyhaven’tseeneachotherforages!George:Yes,andmyfatherreallywantstoseehowtheplacehaschangedsincehelastvisited.讲解新课---1b部分听力文稿李锐：你好，乔治。乔治：嗨，李锐。你猜怎么着！我和我父亲鲍勃打算去参观你的家乡。你能给我们当导游吗？李锐：当然！我很乐意！乔治：太棒了！你知道，我父亲上次去是大约20年前了。他和你爷爷成了好朋友。李锐：爷爷会很高兴的。他们已经很久没见面了！乔治：是的，而且我父亲真的很想看看自从他上次去过之后，那个地方发生了怎样的变化。讲解新课---1c部分LiRuiisnowshowingGeorgeandhisfatheraroundherhometown.Listentotheirconversationandcompletethetable.李锐现在正带着乔治和他父亲参观她的家乡。听他们的对话，完成表格。Past·Ittook(1)_________toreachthetown.·Goingtoschoolbybustooknearly(2)__________overroughroads.Theyusedto(3)______________toseeadoctor.Theydidn’thaveanysuchplacesfor(4)__________.Thehillswerecoveredwith(5)______.halfaday40minuteshavetotravelfarshoppingsand讲解新课---1c部分LiRuiisnowshowingGeorgeandhisfatheraroundherhometown.Listentotheirconversationandcompletethetable.李锐现在正带着乔治和他父亲参观她的家乡。听他们的对话，完成表格。Present·Withthenewroads,ittakesonly(6)___________.·Goingtoschooltakesonly(7)__________.Thetownhasbuiltanew(8)_______.Theynowhavea(9)___________downthestreet.Theyarenowcoveredwith(10)____________.an/onehour15minuteshospitalsupermarketbeautifultrees讲解新课---1b部分听力文稿LiRui:Whatdoyouthinkofyourtripsofar?Bob:Amazing!WhenIfirstvisitedhere,ittookhalfadaytoreachthetown.（Ittakes/took(sb).+时间+todosth.做某事花了（某人）……时间。）Now,withthenewroads,ittakesonlyanhour.LiRui:Yes.WhenIwasachild,thebustooknearly40minutesoverroughroadstogettoschool.Now,ittakesonly15minutes.George:Lifeismucheasier!LiRui:Notonlythat.Weusedtohavetotravelfartoseeadoctor,（sb.usedtodosth.某人过去常做某事）butnowourtownhasbuiltanewhospital.Bob:Great!Anddidn’tIseeasupermarketdownthestreet?LiRui:Yes.Wedidn’thaveanysuchplacesforshoppinguntil10yearsago.Bob:Butthebiggestchangeisonthehills.Theyusedtobecoveredwithsand.LiRui:Andnowtheyhavebeencoveredwithbeautifultrees!讲解新课---1b部分听力文稿李锐：到目前为止，你们觉得这趟旅行怎么样？鲍勃：太棒了！我第一次来这儿的时候，到镇上要花半天时间。现在，有了新修的路，只需要一个小时。李锐：是啊。我小时候，坐公交车在坑洼不平的路上要花近40分钟才能到学校。现在，只需要15分钟。乔治：生活便利多了！李锐：不止如此。我们过去得走很远去看医生，但现在我们镇上建了一家新医院。鲍勃：太好了！我是不是在街上看到一家超市？李锐：是的。直到10年前，我们这儿都没有这样的购物场所。鲍勃：但最大的变化在山上。过去山上全是沙子。李锐：而现在山上长满了漂亮的树！讲解新课---教材语言知识点Goingtoschoolbybustooknearly40minutesoverroughroads.(教材P21c)rough/rʌf/adj.崎岖的用于形容表面高低不平，在句中作定语或表语，反义词为smooth“平坦的”。Inthepast,aroughpathconnectedthetwovillages.过去，一条崎岖的小路连接着这两个村庄。（作定语）Themountainroadisroughatfirstandbecomessmoothaswegodown.这条山路起初崎岖不平，往下走就变得平坦了。（作表语）词义拓展粗糙的艰难的大致的roughhands粗糙的双手aroughtime艰难时期aroughidea大致的想法讲解新课---教材语言知识点becoveredwith

被……覆盖Thehillswerecoveredwithsand.(教材P21c)主语通常为物，with后接具体的覆盖物。用法拓展

cover...withsth.

用某物盖住……，主语通常为人。Mumcoversthetablewithacleancloth.妈妈用一块干净的布盖住桌子。Aftertheheavysnow,thewholemountainwascoveredwithwhitesnow.大雪过后，整座山都被白雪覆盖着。Whenspringcomes,thegardeniscoveredwithgreengrassandcolourfulflowers.春天来临时，花园里长满了青草和五颜六色的花。讲解新课---1d部分Herearewhythesechangesmighthavehappened:Transport:Thegovernmentputmoremoneyintobuildingnewroads.Thismadetravelfaster.Education:Astheeconomygrew,morewasdonetomakeiteasierforstudentstogettoschool.Medicalcare:Thelocalpeopleknewitwashardtoseeadoctor,sotheybuiltanewhospital.Shopping:Peoplehadmoremoneytospend,sosupermarketswerebuilt.Environment:Peoplecaredmoreabouttheenvironment,sotheyplantedtreesonthesandyhills.Discussthechangesin1c.Howdoyouthinktheyhappened?讨论1c中的变化。你认为这些变化是如何发生的呢？讲解新课---2a部分Rankthefollowingproblemsfrom1to4,with1beingtheworst.Giveyourreasons.将以下问题按1到4的顺序排序，1代表最严重。给出你的理由。sandstormswatershortagefarmlandshortagelackoftechnology1.watershortage2.sandstorms3.farmlandshortage4.lackoftechnologyReasons:Ifthereisnotenoughwater,peoplecan’tliveorgrowfoodwell.Sandstormshurtpeople’shealthanddamagecrops（毁坏农作物）.Andnotenoughlandmeansnotenoughfood.Technology（科技）isimportant,butpeoplecanstillworkwithoutit.讲解新课---教材语言知识点sandstorms(教材P32a)合成词sandstorm由sand与storm组合而成。英语中，由两个或两个以上的词合成一个新词，这种构词法叫作合成法。如：snowstorm暴风雪 thunderstorm雷暴greenhouse温室 farmland耕地playground操场 English-speaking说英语的讲解新课---教材语言知识点watershortage

lackoftechnology(教材P32a)shortage/ˈʃɔːtɪdʒ/n.短缺,lack/læk/n.缺乏lackv.

没有；缺乏Helackscouragetospeakinpublic.他缺乏在公共场合说话的勇气。用法拓展两者为同义词，均可作可数名词和不可数名词，常用于“Thereisnoshortage/lackof...”结构，表示“不缺……”。

Thereis

noshortage/lackofdeliciousfoodinthissmalltown.

这个小镇不缺美味的食物。Thecompanyisfacingashortage/lackofskilledworkersthisyear.

这家公司今年面临技术工人短缺的问题。讲解新课---2b部分ListentotheconversationbetweenGeorge’sfatherandLiRui’sgrandfather.Whatproblemsin2adidtheymention?听乔治的父亲和李锐爷爷之间的对话。他们提到了2a中的哪些问题？Theymentionedtwoproblems—sandstormsandfarmlandshortage.他们提到了两个问题：沙尘暴与耕地短缺。Past过去Thereusedtobe__________allthetime,andthe______weregettingsmallerandsmaller.Localsworkedby___________.Action措施

Localsfoundabush.Ithad________rootsthatcould_________thesoiltogether.Theybeganplantingitinsandy________,withthegovernment’ssupport.Theyhad__________tohelp.Present现在Thecornfieldsare_________.Theyhaveplantedmanybushesand_________sincethen.Theyare__________sandstormsnowandtheenvironmentisgetting_________.Ithasimprovedlocallives.讲解新课---2c部分Listenagainandfillinthetable.Howhastheenvironmentaffectedlocallives?再听一遍并填写表格。环境对当地居民的生活产生了怎样的影响？sandstormsfieldshandlongholdareasmachineshugetreesfewerbetterWasn’titdifficulttoplantsomanybushes?Yes,itwas.Atthebeginning,weworkedbyhand.Later,wehadmachinestohelp.Wehaveplantedmanybushesandtreessincethen.Therearefewersandstormsnowandtheenvironmentisgettingbetter.Ithasalsoimprovedourlives.Everyonehasbecomericherandhappier.Bob:Grandpa:PastPresent讲解新课---2c部分听力材料讲解新课---2d部分Discusshowtheproblemsin2bweresolved.讨论2b中提到的这些问题是如何被解决的。A:Theareausedtobecoveredwithsand.这片区域过去遍地都是沙子。B:Whatdidtheydotosolv