广州新版八年级上册Unit3Computers

1/14Unit3Computers课文重难点详解1.Inthe1940s,thefirstcomputerswerebiggerthancars.inthe1940s意为“在20世纪40年代”，例：在20世纪50年代表示在某个年代初期或末期，可以在年份前加early或late.例：intheearly1940s2.Youmaybeunawareofthem.beunawareof意为“未察觉，没有意识到”译：那个男孩没有意识到危险。3.ThereisprobablyoneinsideyourTVorwashingmachine.one此处用作代词，用于泛指前面提到过的名词。辨析：one和it例：Thebananapietastesdelicious.CouldIhaveanother?AoneBitCthisDthat4.Youdependoncomputersmorethanyourealize.dependon意为“依靠，指望”，主语可以是人，也可以是物，其含义有所不同。人依靠dependon物取决于dependentadj.依赖的，反义词：independent“独立的”dependon=bedependenton译：shedependsonustohelpher.Ourplandependsontheweather.one泛指上文提到的同类事物中的一个Ilostmypen.Imustbuyone.it特指上文提到的同一物品Thecoatishers.It’sverybeautiful.2/145.Computersalmostnevergivewronganswers.almostnever=hardly意为“几乎不”辨析：hardly和hardhardly“几乎不”Alicehardlywearsskirts.hard“努力地，困难地，猛烈地”Itrainedveryhardlastnight.6.However,onedaycomputersmaybeabletodoabetterjobthanhumanbeings.beableto意为“能够”，后接动词原形。7.Willwehavenothingtodo?todo为动词不定式，此处用来修饰nothing,如果不定式中的动词是不及物动词，需要带上必要的介词。例：Doyouwantsomethingtodrink?Thereisawarmclothestolivein.例：---Whydon’tyougoouttoplay,Rose?---I’mafraidIcan’t.Ihavemuchhomework.AdoBdoesCdoingDtodo8.Whatwerethefirstcomputerslike?What+be+主语+like?意为“......怎么样？”,like是介词，意为“像，相似”译：今天天气怎么样？辨析：what’ssblike,whatdoessblike与whatdoessblooklikeWhat’ssblike“某人如何”用于询问某人的性格，品质等Whatdoessblike“某人喜欢什么”用于询问某人的爱好Whatdoessblooklike“某人长什么样”用于询问某人的外貌9.Someyoungpeoplealwaysneedhelpfromtheirparents.need用法总结：needsb/sth需要某人或某物例：Ineedapentowritewith.3/14②sbneedtodosth某人需要去做某事例：Heneedstohaveagoodrest.③sthneeddoing某物需要被...例：Mybikeneedsrepairing.④needn’t用来回来Must提出的问句例：--MustIbringmyhomeworknow?--No,youneedn’t.重点语法：形容词的比较级和最高级分为规则变化和不规则变化规则变化如下:1)单音节形容词的比较级和最高级形式是在词尾加-er和-est构成；greatlong2)以-e结尾的单音节形容词的比较级和最高级是在词尾加-r和-st构成；widenice3)以辅音字母+y结尾的形容词，比较级和最高级是把y去掉,加上-ier和-est构成；happyempty5)辅元辅的形容词，比较级和最高级是双写该辅音字母，再加-er和-est；bigfat6)部分双音节和多音节形容词，比较级和最高级需用more和most来构成。beautifuldifficult常用的不规则变化的形容词的比较级和最高级:good/well------better------bestmany------more------mostmuch------more------mostlittle-----less----leastbad/ill------worse------worstfar------farther/further---farthest/furthestold----older/elder------oldest/eldest4/14形容词前如加less和least则表示较不和最不important重要lessimportant较不重要leastimportant最不重要形容词比较级的用法1.两者比较时用形容词比较级，其结构为“...比较级+than...”如：Actionsspeaklouderthanwords.2.在两者之间选择“哪一个更……”时，用句型“Which/Whois+比较级,...or...?”如：Whichsweaterischeaper,theredoneortheyellowone?3.表示“两者之间最……的一个”时，用“the+比较级”如：Lucyisthetallerofthetwins.4.表示“越……，越……”时，用“the+比较级，the+比较级”如：Themoreyoueat,thefatteryouwillbecome.5.表示“越来越……”时，用“比较级+and+比较级”，多音节词和部分双音节词用“moreandmore+形容词原级”如：Weshouldmakeourcountrymoreandmorebeautiful.6.形容词比较级前可以用下列词修饰：much,alittle,far,abit,afew,alot,even,still,rather等如：It'smuchcoldertodaythanyesterday.表示“最……之一”时，用“oneof+the+最高级”如：Thelightbulbisoneofthemosthelpfulinventions.5/14Unit3同步练习1.Theworkersspenttwoyearsmyhouse.AbuildBbuildingCbuildsDhuilt2.---HowoftendoesBobplaytennis.---.AEveryday.BForayear.CAweekagoDAmonthlater.3.---WouldyoulikeTV?---I’dloveto,butIhavelotsofhomeworktodo.AwatchingBtowatchCseeingDtosee4.We’relookingforwardthefootballgametomorrow.AtoBatConDof5.I’mhungrynow.Let’sstop.AhavingamealBhavingarestCtohaveamealDtohavearest6.Thatbeautifulskirtiscotton.AmadeofBmadeintoCmadefromDmadeupof7.Whatshallweifwegoforapicnic?AbringBtakeCcarryDget8.Thisboxis___thatone.A.heavythanB.soheavythanC.heavierasD.asheavyas9.Whenwespeaktopeople,weshouldbe'.A.aspoliteaspossibleB.aspoliteaspossiblyC.aspolitelyaspossibleD.aspolitelyaspossibly10.Thisbookis____thatone,but____thanthatone.A.asdifficultas;expensiveB.asmoredifficultas;moreexpensiveC.asdifficultas;moreexpensiveD.moredifficultas;asexpensive11.Ithinkthestoryisnotso___asthatone.A.interestingB.interestedC.moreinterestingD.mostinteresting12.Hisfatherbegantowork____hewassevenyearsold.A.asoldasB.asearlyasC.sinceD.while13..Ithinkscienceis____thanJapanese.6/14A.muchimportantB.importantC.muchmoreimportantD.moremuchimportant14.Thispencilis_____thanthatone.A.longestB.longC.longerD.aslong15.Mymotherisno______young.A.shorterB.longerC.littleD.few16.Thesechildrenare________thisyearthantheywerelastyear.A.moretallB.moretallerC.verytallerD.muchtaller17.Itwasveryhotyesterday,butitis______today.A.evenhotterB.morehotterC.muchmorehotD.muchhot18.MrsBlackhasgot______insteadofgettinganybetter.A.morebadB.alittleworseC.muchbadlyD.alotofworse完型填空Allmyfamilymembersliketousecomputers.WeliveinChina,1myunclelivesinAustralia.Myfatherandmyuncleoften2emailstoeachother.Sometimes3chat（聊天）online.Mymotherisa4inamiddleschool.Sheoften5thecomputerforherlessons.Shealsogetsinformationforherlessons6theInternet.MybrotherandIliketo7computergames.IliketoplayCounterStrike,buthelikestoplayTombRaider.My8don’tlikeustoplaythemtoolong.Theysaythatplayingcomputergamestoolongisbadforour9andstudy.Webothlike10,too.SosometimeswedownloadsongsfromtheInternettoourMP3players.()1.A.butB.andC.orD.so()2.A.makeB.sendC.giveD.write()3.A.weB.youC.theyD.I()4.A.doctorB.teacherC.studentD.student()5.A.playsB.buysC.usesD.does7/14()6.A.inB.onC.withD.at()7.A.makeB.doC.playD.get()8.A