【2022】初三英语上册各单元重要知识点汇总

初三英语上册各单元重要知识点汇总初三英语上册各单元重要知识点汇总初三是整个初中学习最为关键的一年，本篇是九年级上册所有知识点，包括重点句型、短语、知识点详解和重点语法。Unit1TheChangingWorldTopic1Ourcountryhasdevelopedrapidly.【重点短语和句型】haveagoodsummerholiday 暑假过得愉快comebackfrom 从 回来have/hasbeento去过have/hasgoneto 去了not...anymore再也不...takephotos相bytheway 顺便问一下takepartin参加around/allover/throughouttheworld全世界tellsb.somethingabout... 告诉某人关于某事have/liveahappy/hardlife过着幸福/艰苦的生活describe...indetail详细描述givesupportto 支持...see...oneself 亲眼看见keepintouchwith与 保持联系faraway 遥远的kinds/sortsof各种各样的...notonly...butalso不仅...而且...makeprogress取得进步morethan/over多于develop/improverapidly迅速发展/改善tellsb.(not)todosth.告诉某人（别）做某事asksb.(not)todosth.要求某人（别）做某事inordertodosth.为了做某事havetodosth.不得不做某事It's+形容词+forsb.todosth.对于某人来说做某事是 的whynotdosth.为什么不做某事succeed/besuccessfulindoingsth.成功地做某事dreamaboutdoingsth.梦想做某事see/hearsb.do/doingsth.看见/听见某人做/正在做某事【重点语法】现在完成时一.现在完成时的基本结构肯定句：主语+have/has+动词的过去分词+其他+have/has+not主语+动词的过去分词+其他特殊疑问句：特殊疑问词+一般疑问句（have/has+主语+过去分词+其他）二.现在完成时的用法动作或状态发生在过去但它的影响现在还存在，强调的是现在。I havealreadypostedthephoto.我已经邮寄出了照片。与此种用法连用的时间状语时一些模糊的过去时间状语，如中否定句/疑问句句尾just,before,recently,still,等。有可能会继续持续下去。Hehaslivedheresince1978.19781978时间段时间点或过去时的句子）词必须是延续性动词。有些瞬间动词可变为延续动词：goout----beout finish----beover open----beopendie----bedead buy---have fallill---beill comeback beback catchacold----haveacoldTopic2Thepopulationindevelopingcountriesisgrowingfaster.【重点短语和句型】1.getlost迷路acoupleof一些，几个withthedevelopmentof随着 的发展withthehelpof...在...的帮助下oneofthe+形容词最高级+名词复数 其中之一/最...的其中之一eachother 互相call/ringsb.up给某人打电话atleast 至少sth.happentosb.某人发生某事Whathappenedtosb?某人发生某事?takeplace发生becauseof因为，由于bestrictwithsb./insth.对某人/某事严格要求carryout 执行thousands/millions/hundredsof成千上万/无数的/成百上千...twothousand/million/hundred两千/百万/s)halfof... 一半...twothirds三分之二beshortof短缺...sofar 到目前为止beknown/famousfor因...而闻名beknown/famousas作为...而闻名thanksto 幸亏...havealongwaytogo有很长的路要走atowncalled...一个叫做...的镇fewerthan/lessthan少于placesofinterest名胜古迹beinterestedin对...感兴趣suchas 例如...look/smell/sound/feel/taste+形容词看/闻/听/摸/尝起来...sucha/an+形容词+sb./sth 如此...的人/物takesb.tosp带某人去某地keepupwith赶上havefundoingsth.做某事很愉快35.haveapopulationof... 有...的人口What'sthepopulationof...?...有多少人口？wanttodosth.想要做某事hatetodosth讨厌做某事takemeasurestodosth.采取措施做某事have(no)chance/timetodosth.有机会/时间做某事usedtodosth.过去常常做某事beusedtodosth.被用来做某事be/getusedtodoingsth.习惯做某事workwellindoingsth.在...方面起到显著作用justyet,ever,recently.e.g. 1.Ihavejustcalledyou.2.——Haveyouever beentoFrance?——No,I’veneverbeentoanyEuropeancountries.3.——Haveyouhimyet? ——Yes,Ihaveseenhimalready.Topic3Theworldhaschangedforthebetter.【重点短语】1.withthemoney用这些钱2.sothat 为了，以致于3.so...that...如此...以致于...infact/asamatteroffact事实上comeforavisit来参观inneed 在困难时decideonsth.决定某事providesth.forsb./providesb.withsth.为某人提供某物feelgoodabout...对...有信心10lendsth.tosb/lendsb.sth.把某物借给某人11.borrowsth.fromsb.向某人借某物12.atthesametime与此同时13.talkonthephone在电话中交谈14.takedrugs吸毒payfor 付款buysth.forsb.给某人买某物athomeandabroad在国内外sendsb.tosp.送某人去某地sendforsb.派人去请某人aimtodosth.目的是做某事decide(not)todosth.决定（不）做某事finishdoing结束做某事Howdoyoulike.../Whatdoyouthinkof...?你觉得...怎么样？sb.spendst.indoingsth=Ittakessb.st.todosth.时间做某事sb.spendsomemoneyonsth.=sb.paysomemoneyforsth.钱买某物so+be/助动词/情态动词+主语 表示后者情况与前者一样（表肯定）neither/nor+be/助动词/情态动词+主语 表示后者情况与前者一样（表否定）so+主语+/be/助动词/情态动词 表示的确如此1.forsince去某一时刻延续到现在。e.g.YouhavebeeninNewYorkforalongtime.ThecityhasimprovedalotsinceIcamehereafewyearsago.2.构词法:home+work=homeworkuse——useful,happy——unhappyUnit2SavingtheEarthTopic1Populationcausestoomanyproblems.【重点短语】1.chemicalfactory化工厂2.pour…into…把……排放到……3.inabadmood4.managetodosth.设5.doharmto/beharmfulto…6.afew相当多7.nobetterthan同…….一样差8.inpubic公开9.allsortsof10.inmanyways在许多方面【重点句型】1.Look,thereareseveralchemicalfactoriespouringwaterintothe2.Everythinghaschanged.一切已发生了变化。3.Howlonghaveyoubeenlikethis?你像这样多长时间了?4.I’malwaysinabadmoodbecauseIcan’tstandtheenvironmenthere.我的情绪总是很差因为我受不了这里的环境。5.However,notallpeopleknowthatnoiseisalsoakindofpollutionandisharmfultohumans’health.然而，并非所有的人都知道噪音也是一种污染，而且有害于人类健康。【重点语法】直接引语和间接引语Grannysaid,“I’mfeelingevenworse.”Grannysaidthatshewasfeelingevenworse.“Doyoustilllivehere,Granny?”thejournalistasked.ThejournalistaskedGrannyifshestillwantedtolivethere.“Howistheenvironmentaroundthisplace?”thejournalistasked.Thejournalistaskedhowtheenvironmentaroundthatplacewas.Topic2Alltheseproblemsareveryserious.【重点短语】1.asaresult 结果2.hereandthere 到处3.inthebeginning一开始4.indanger处于危险中5.cutdown 砍倒6.osth. 把……变成……7.preventfrom 防止8.greenhouseeffect 温室效应9.referto 提到10.dealwith处理12.cutoff 中断【重点句型】1.Asweknow,noneofuslikespollution.Humanshavecometorealizetheimportantofprotectinganimals.3.Treescanalsostopthewindblowingtheearthaway.4.Cuttingdowntreesisharmfultohumanbeings,animalsandplants.5.Somethingswe’vedoneareverygoodforearthwhilesomearenotgood.们所做的，有些对地球很好，而有些不利。6.Theycanalsopreventthefromwashingtheearthaway7.Whenitrainsorthewindblows,theearthistakenaway.天一下雨或刮风，土就会被冲走或刮走。不定代词1.2.中可作主语、宾语、表语、定语等。somethingsomebody,anything,等作主语时，通常视为单数。当形容词修饰它们时，要放在其后。e.g.Butgovernmenthasdonesomethingusefultoprotecttheenvironment.Topic3Whatkindsofthingscanwedotoprotecttheenvironment?【重点短语】1.notonly…butalso… 不仅……而且……2.besupposed应该3.oughtto应该4.turnoff 关掉5.insteadof 代替6.ontime 准时7.makesure确保8.pushforward向前推9.pushdown 下10.pullup 向上拉【重点句型】1.Forexample,weshouldusebothsidesofpaperandplasticbags.例如，我们应该用纸的两面，并且重新使用塑料袋。2.Everyoneissupposedtodothat.每个人都有义务那样做。3.First,yououghttoturnoffthelightswhenyouleavearoom.首先，你离开房间时应该随手关灯。4.Easiersaidthandone.说起来容易做起来难。5.Well,actionsspeaklouderthanwords.嗯，百说不如一做。6.Therewillbealotofhardtodotomorrow,somakesureyougotobedearlytonight.明天有许多繁重的活要干，今晚一定要早睡。earthisrising.2.Theyworkwell,buttheyareslowandcan’trunlong.Unit3EnglishAroundtheWorld Topic1Englishiswidelythroughouttheworld.【重点词语】1.beableto=can能够,会2.can’twaittodosth.3.havea(good)chancetodosth.4.practicedoingsth.5.bemadeby…bemadeof/from…bemadein…6.onbusiness7.besimilarto…8.translate…into…把……翻译成……9.haveno/sometrouble(in)doingsth.做某事没有/10.onceinawhile=sometimes/attimes11.whenever=nomatterwhen无论何12.aswellas13.mothertongue14.taketheleadingposition15.encouragesb.todosth.16.callfor召【重点句型】1.Disneylandisenjoyedbymillionsofpeoplefromallovertheworld.2.IhopeIcangothereoneday.3.Englishiswidelyspokenaroundtheworld.4.Itisalsospokenasasecondlanguageinmanycountries.在许多国家它也被用作第二语言。5.Itispossiblethatyouwillhavesometrouble.6.It’susedasthefirstlanguagebymostpeopleinAmerica,Canada,Australia,GreatBritainandNewZealand.且世界上三分之二的科学家用英语阅读。【重点语法】一般现在时的被动语态英语语态有主动语态和被动语态两种。主语是动作的执行者，叫主动语态。如：Wecleantheclassroom.室。主语是动作的承受者，叫被动语态。如：Theclassroomiscleaned(byus).教室被（我们）打扫。被动语态的构成：助动词be+宾语）其中byglassisbrokenbythat玻璃杯是那个男孩打破的。bebe连系动词时完全一样。如：Englishiswidelyspokenaroundtheworld.（定式）Englishisnotwidelyspokenaroundtheworld.（否定式）---IsEnglishwidelyspokenaroundtheworld?（疑问式）---Yes,itis./No,itisn’t.coatismadeofcotton.要强调动作的承受者而不是执行者时，用被动语态。如：Herbikeisstolen.她的自行车被偷了。3．主、被动语态的转换：主动语态：主语+及物动词谓语动词+宾语（+其它）被动语态：主语+be+及物动词的过去分词+by+宾语（+其它）主动、被动互转时，时态不变。by：(1)Peoplegrowriceinthesouth.Riceisgrown(bypeople)inthesouth.(2) She takescareofthebaby. Thebabyistakencareof(byher).Topic2Englishisspokendifferentlyindifferentcountries.【重点词语】1.bytheway顺便说一下 2.dependon取决于依靠……3.bedifferentfrom与……不同 succeedin成功，达成5.makeyourselfunderstood表达你自己的意思6.onone’swayto在某人去……的路上7.seesb.off给……送行8.leavefor…前往某地/leave…for…离开…去…9.intwentyminutes二十分钟之后10.writtenEnglish笔头英语/oralEnglish英语口语11.generallyspeaking一般说来，大致上说12.asforsb./sth.至于某/某物13.becloseto…靠近…… 14.inperson身体上，外貌上；亲自15.befoundof…爱好……16.beforcedtodosth.被迫做……forcesb.todo强迫某人做事17.evenworse更糟的是【重点句型】1. IsAustraliaEnglishthesameasBritishEnglish?澳式英语和英式英语一样吗?2.EnglishisspokendifferentlyindifferentEnglish-speakingcountries.不同的国家使用不同的英语。3.Forexample,therearedifferencesbetweenBritishEnglishandAmericanEnglish.如，在英式英语和美式英语之间有些不同点。4.Ican’tbelievethatI’mflyingtoDisneyland.我简直不敢相信我就要飞往迪斯尼乐♘了。5.Ihopewon’thaveanydifficulty.我希望不会遇到什么困难。6.Wheneveryouneedhelp,sendmean-mailortelephoneme.无论何时你需要帮忙，给我发电子邮件或打电话。7.NotonlychildrenbutalsoadultsenjoyspendingtheirholidaysinDisneyland.不但青少年而且成年人也喜欢到迪斯尼乐♘假。【重点语法】用现在进行时表示将来现在进行时表示将来时，常有“意图”、“安排”（但不是固定不变的）或“算”含义它表示最近或较近的将来所用的动词多是位移动词如go,arrive,leave,fly,start,begin,return,open,dieI’mgoing.我要走了。 Whenareyoustarting?你什么时候动身？Don’tworry.Thetrainisarrivingheresoon.别着急，火车马上就到了。uncleismeetingustomorrow.Sheisbuyinganewsoon.Topic3CouldyougiveussomeadviceonhowtolearnEnglishwell?【重点短语】1.inpublic在公共场所 2.attimes=sometimes有时3.feellikedoing=wouldliketodo想要做… 4.giveupsth./doingsth.放弃 5.turntosb.forhelp求助于某人6.givesb.someadviceon/about…给某人一些有关……的建议7.beweakin在……方面很差/begoodat在……方面很好8.beafraidofdoing害怕做某事 9.makemistakes犯错误10.takeadeepbreath深呼吸 11.thebesttimetodo做某事最好的时间12.dosomelisteningpractice做些听力训练 13.replyto=answer回答14.advisesb.todo建议某人做某事（名词advice）【重点句型】1.CouldyoumakeyourselfunderstoodintheU.S.A?在美国，别人能懂得你的话吗？2.Idon’tknowwhattodo.我不知道该怎么办？3.AttimesIfeellikegivingup.有时我想要放弃。4.Trytoguessthemeaningsofthenewwords,andgetthemainideaofthearticle.notanswerquestionsinclass,I’mafraidofmakingmistakes.误。6.It’sanhonortotalkwithallofyou.与在座的各位交谈是我的荣幸。7.Butremembertochoosetheonesthatfityoubest.IinsistthatyoupracticeEnglisheveryday.【重点语法】wh-+todowhwhen,where,which,who(m)howwh-+tododo未来。)如：Idon’tknowwhattodo.=Idon’tknowwhatIshoulddo.Shetdecidewhichtobuy.=shecan’tdecidewhichshewillbuy.（由疑问词引导通常可以与“疑问词+不定式”互相转换。如：Idon’tknowwhatIshoulddo.=Idon’tknowwhattodo.如果不一致就不能转换。IwanttoknowwhatMarywilldo.(不能说:Iwantknowwhattodo.)Unit4AmazingScienceTopic1Whenwasitinvented?【重点短语1.goaround环绕2.send…into…=sendup…into… 把送入......3.congratulationsonsth祝贺某事4.beproudof为……自豪5.bemovedby为……而感动6.Thanks/Thankyoufor+n./vingsth感谢某人做的某事7.havephysicalexaminations做体检 8.ingood/badhealth处于好（不好）的身体状态9.can’thelpdoing情不禁做……10.taketurnto(dosth)轮流（做某事）11.nodoubt疑地aswellas除……的之外，也13.forinstance/example例如14.workon做……（方面）的工作15.dependon/upon依靠，依赖16.turnon打开17.turnoff 关掉18.turnup开大19.turndown关小20.clickon用鼠标点击21.lookforwardtodoingsth期待做某事【重点句型】1.Nowbigplansarebeingmadetosendupmoresatellitesandevenbuildaspacestation.现在中国正在计划发射更多的卫星，甚至建造一个空间站。2.I’mmovedbywhatYangLiweidid.我被杨利伟所做的事感动了。3.Generallyspeaking,weareingoodhealthnow.一般来说，我们现在的健康状况良好。4.Wecouldn’thelplookingattheearthagainandagain.我们忍不住再三地看着地球。 5.IwasabletofallasleepassoonasIgotintothesleepingbag.Wetookturnstohavearest.一进入睡袋我就睡着了我们轮流休息6.IthasprovedthatChinahasmadegreatprogressindevelopingitsspaceindustry.这证明了中国航天业的发展已取得了巨大的进步。7.Thereisnodoubtthatcomputersarewidelyusedworkersinbusinessand毫无疑问，电脑被商业,科技工作者广泛地应用.8.Computershavemadetheworldsmaller,likea“village”.脑使得世界变小了，就像一个“村庄”。【重点语法】宾语补足语名词、形容词、副词、介词和动词不定式等。（一）名词、形容词、副词、介词短语作宾语补足语。如：1.WecallhimJim.（名词） 我们叫他吉姆。2.Wemustkeepourschoolcleaneveryday.（形容词） 我们必须每天保持校♘清洁。3.Callhimin,please.（副词） 请叫他进来。4.Leaveitonthe介词短语） 把它留课桌上。（二）动词不定式作宾语补足语可分为三种情况totell,get,teach,want,invite,like,allow,wish,等。如：TellJanetosingasong.叫简给我们唱支歌。to、二听（listento,（make,let,四看（lookat,see,watch,notice）如：Let’shavearest.让我们休息一会儿。但这种结构变成被动语态时，toHewasseentoleavetheroomwithabookinhand.有人见他手拿着一本书离开这个房间。totohelpyouhelpme(to)washmyclothes?你能帮我洗衣服吗？（三）分词作宾语补足语可分为两种情况现在分词作宾语补足语，经常表示正在发生的动作。可跟这类补足语的动词有：see,watch,hear：Ihearsomebodysinginginthenext我听见有人在隔壁唱歌。needtohaveyourhaircut.你需要理发了。Topic2I'mexcitedaboutthethingsthatwillbediscoveredinthefuture.【重点短语】be used for+ving 被用做……come true 实现It’s saidthat 据说during/in one’s life 某人一生be known as 以……（身份）而著名know/say forcertain 确切知道/肯定地说all the time一直，总是no longer=not…any longer 不再=(nomore, not…anymore)as long as 只要as far as 就……，尽……make a greatcontribution 对… 作出巨大贡献the rest ofthe time 在其余地时间里at any time在任何时候【重点句型】BecauseI’mnotallowedtoplaycomputergames.游戏。HowdoyousaythisinEnglish? 这用英语怎么说？It’smadefromwood. 它用木材做的。It’susedforhelpingustoimproveourE