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Unit3◆知识探究SteponeGettingready&Reading课文讲解1Listentoawomanmakingaphoneorder.听一位女士电话购物。Ordern.订货；订购。makeanorder订购。如：Pleasemakeanorderforanewsofaandateatable.请订购一个新沙发和茶几。回顾：order还可表示“命令”的意思。如：Thisisanorder!这是命令!ordersbtodosth命令某人做某事（1）韩梅梅命令李雷去做家务。_________________________________________(2)Mymotherorderme_______offtheTV.A.toturnB.turningC.turnD.toturning2Learnhowtocomparethingsbyusingthecomparativeofadjectives.学习如何用形容词的比较级来对比事物。Comparev.比较；对比。Compare…with…把···与···相比。如：Comparethispicturewiththatoneandseewhichisbetter.把这幅画和那幅画相比，看看哪幅更好。3Weusethecomputerfortyping.我们用电脑来打字。Typev.打字。如：I’llaskMisswhitetotypetheletter.我会让怀特小姐把这封信打出来。Type还可作名词，表示“种类；类型”的意思。如：Atypeof一种4Computersmayworkasdoctors.电脑可以当医生。Workas从事···工作。如：Mybrotherworksasanengineer.我哥哥是工程师。(1)我将来想从事一名教师。________________________________________(2)我妈妈是一名家庭主妇。________________________________________5Youmaybeunawareofthem.你可能没意识到这些。Beunawareof没意识到；未察觉。如：Hewasunawareofthetruth.他没意识到真想。拓展：beawareof意识到；察觉到(1)我没想到你是这样一个人。_________________________________6Youdependoncomputersmorethanyourealize.你依赖电脑的程度比你知道的更多。Dependon依靠。如：Childrendependontheirparents.孩子依靠父母。(1)我们必须自己靠自己。____________________________________7Theycancalculateatafasterspeedthanwecanandalmostnevergivewronganswers.它们的计算得比我们快，而且几乎从不出错。Speedn.速度。如：Atafast/fullspeed快速/全速Ataspeedof120kilometersperhour以每小时120公里的速度(1)我以每分钟500米的速度冲向饭堂。_________________________________8Inaddition,computerscandoimportantjobslikeoperatingrailwaysandflyingplanesandspaceships.此外，电脑可以做很重要的工作，如铁路系统的控制、飞机飞船的操作。Inaddition除···以外（还）。如：Hedoeswellinallhissubjects.Inaddition,heisgoodatplayingsports.他各门功课都很出色。此外，他还擅长各项运动。(1).另外，我寒假还要去旅游。________________________________________9.However,onedaycomputersmaybeabletodoabetterjobthanhumanbeings.Beableto意为“能，能够”，后接动词原形。Tomisn’tabletocomebecauseheisill.辨析beableto与canbeableto表示有能力，往往是经过努力而获得的能有人称和数的变化可用于多种时态力can表示身体或精神上自身具备的能力，还可以表示请求、允许、推测没有人称和数的变化只有一般现在时和一般过去时的两种时态10.Someyoungpeoplealwaysneedhelpfromtheirparents.Need作实义动词讲，意为需要Needtodosth“需要做某事”，主语通常是人Weneedtotellhimthetruth.Needdoingsth“需要做某事”，主语通常是物Theflowersneedwatering.Need作情态动词时，没有人称和数的变化，后接动词原形，主要用于否定句或疑问句中。（1）你需要按时完成作业。___________________________________________（2）没有人的时候灯要关掉。__________________________________________11.Wehadfunandlearntsomethingnewaswell.Havefun意为“玩得开心，过得愉快”，相当于haveagood/great/wonderfultime或enjoyoneself,此处fun是不可数名词，意为“玩笑，娱乐，乐趣”Thechildrenarehavingfunplayinginthepark.(1)我们去下川岛玩得很开心。___________________________________=___________________________________________Aswell意为“也”。通常放句末，相当于too.IcanspeakChineseandIcanspeakEnglishaswell.12....butitworksatamuchfasterspeedthanmyoldone.At介词，意为“（速度）以...”。Ataspeedof以...的速度athigh/lowspeed以高速/低速Attop/fullspeed以全速Muchfaster意为“快得多”。“much+形容词/副词的比较级”意为“......得多”I’mmuchtallerthanyou.常见的用于修饰比较级的单词或短语有much,even,alittle,abit等。Steptwo-Listening讲解Priceeach单价Price名词，意为“价钱价格”。询问价格用“What’sthepriceof...?”，相当于“Howmuchis/are...?”。1）表示价格高用“high”,表示价格低用“low”。Thepriceofthebookisveryhigh.2）expensive“昂贵的，花钱多的”，表示物品“贵”；表示物品“贱”用cheap（廉价的，便宜的）。它们的主语必须是货物、物品本身。Thiswatchisexpensive.【随堂练】：(一)单项选择：1Thiscomputeris________thanthatone.A.expensiveB.moreexpensiveC.muchexpensiveD.mostexpensive()2Marydepended________hergrandparentsafterherparentsdiedintheaccidentA.onB.inC.byD.with()3Lucy’smother________ateacherinabigschool.Sheiskindtoallherstudents.A.worksoutB.worksasC.worksinD.workson()4Samisanexcellentengineer.________,heisagoodfootballer.A.introubleB.intimeC.inadditionD.infuture()5Weusethemousefor________thecomputer.A.controlB.controlsC.controlledD.controlling(二)单词拼写。1—Howfastcanthecarrun?—Itcanrunatas________of150kilometresanhour.2Wed________oneachotherbecausewearegoodfriends.3Theseantsaresot________thatpeoplearealwaysunawareofthem.4Useyourb________,andyou’llfindaway.5Myseventy-year-oldgrandpaislearningtot________withthecomputer.(三)完成句子。1人们生病时要依靠医生。Peoplehaveto________________doctorswhentheyareill.2此外，李老师还是个灌篮高手。________________,MrLiisagreatbasketballplayer.3你父亲从事什么工作？Whatdoesyourfather________________?4我没察觉到这个错误的答案。I________________________thewronganswer.5如果你比较一下这些文章，你就会知道谁写得最好。________you________thesearticles,you’llknowwritesthebest.(四)读课文，选择正确答案。()1Thefirstcomputersappeared________.A.in1940B.beforecarsC.inthe1940s()2Nowcomputersarebecoming________.A.smallerB.lessC.bigger()3Computerscando________forhumanbeings.A.nothingB.somethingC.anything()4Peoplemovethe________tocontrolthecomputer.A.mouseB.keyboardC.monitor()5Computersaren’tclevererthanusbecausewecan________.A.calculatefasterthanthemB.alwaysgiverightanswersC.producenewideasStepthree-Speaking＆Writing1Whatdoyouthinkofcomputers?Whatdoyouthinkof….=Howdoyoulike……?你觉得…..怎么样？-Whatdoyouthinkofyourtrip?-Great!Wehaveagoodtime!【中考链接】你认为我们的校规和班规怎样？____doyou_________ourschoolrulesandclassrules?2Howoftendoyouusethecomputer?Howoften“多久一次”回答的时候用频度副词always，often……或者频度副词短语once/twiceaweek.-Howoftendotheyplayping-pong?-Onceaweek.【辨析】Howoften多久一次，指频率Howlong多长时间，用for或者是since回答-Howlongdidyoustayhere?-ForthreedaysHowsoon还要多长时间才，多用于将来时，-Howsoonwilltheycomeback?用in+一段时间回答-Intwodays.【中考链接】-_______