as考点归纳大全

一、考查as原级比较结构及插入名词的位置问题典型命题:1.Ourneighbourhas______ours.A.asabighouseasB.asbigahouseasC.thesamebighouseasD.ahousethesamebigas2.Johnplaysfootball______,ifnotbetterthan,David.A.aswellB.aswellasC.sowellD.sowellas解析:一般来讲,形容词、副词原级比较的结构为“...(not)as”表示前者与后者一样/不一样。如果中间有名词,其常用结构为“...as+adj.+a(n)+名词+as...”。真题直练1.Itisgenerallybelievedthatteachingis______itisascience.A.anartmuchasB.muchanartasC.asanartmuchasD.asmuchanartas2.Shedoesn'tspeak______herfriend,butherwrittenworkisexcellent.A.aswellasB.sooftenasC.somuchasD.asgoodas3.Thepianointheothershopwillbe______,but______.A.cheaper;notasbetterB.morecheap;notasbetterC.cheaper;notasgoodD.morecheap;notasgood4.Aftersuppershewouldsitdownbythefire,sometimesfor______anhour,thinkingofheryoungandhappydays.A.aslongasB.assoonasC.asmuchasD.asmanyas—4DACA二、考查as构成的倍数表达法典型命题:Thehouserentisexpensive.I'vegotabouthalfthespaceIhadathomeandIampaying______here.A.asthreetimesmuchB.asmuchthreetimesC.muchasthreetimesD.threetimesasmuch解析:如果表示一方是另一方的若干倍时“……倍数+as+原级形容词/副词……”为一常用结构。真题直练1.WiththehelpoftheGermanexperts,thefactoryproduced______carsin1993astheyearbefore.A.astwicemanyB.asmanyastwiceC.astwiceasmanyD.twiceasmany2.Afterthenewtechniquewasintroduced,thefactoryproduced______tractorsin1988astheyearbefore.A.astwicemanyB.asmanytwiceC.twiceasmanyD.twicemanyas—2DC三、考查充当连词的as典型命题:1.______,Ihaveneverseenanyonewho'sasA.AslongasIhavetravelledcapableasJohn.B.NowthatIhavetravelledsomuchC.MuchasIhavetravelledD.AsIhavetravelledsomuch解析:此题中as引导倒装结构,表示让步关系,其结构为“……as+主语+谓语……”。特别提示:使用此结构时应注意以下几点:1)倒装的部分一般为表语、状语和动词原形。表语是不带定语的单数可数名词,其前面的要省去;3)倒装的动词原形常与may,might,will,would等词连用,但这些词都要保留在原来位置上。如:Childasheis,hespeaksEnglishwell.他虽是个孩子,但英语说得很好。MuchasIlikethebook,butIhavenomoneytobuyit.虽然我非常喜欢这本书,但我却没钱买。Tryashemight,Tomcouldnotfindajob.不管怎样努力,汤姆还是找不到一份工作。2.MotherwasworriedbecauselittleAlicewasill,especially______FatherwasawayinFrance.A.asB.thatC.duringD.if解析:此题中as充当从属连词,作“当……的时候”解,引导时间状语从句,表示主句动作与从句动作同时发生。在使用as时应注意其与while和when的区别:1)while常表示一段较长的时间或一个过程,强调主句谓语动词与从句谓语动词所表示的动作同时发生,为“在……期间”之意。如:WhileIwasreadingletterslastnight,hewaswatching昨晚我看信时,他在看电视。2)when可用来表示一段时间,意为“在……期间”,与延续性动词连用;也可用来表示时间点,意为“当……时候”,与非延续性动词连用。如:Ifellasleepwhenhewasdoinghisexercises.他做练习时我睡着了。Whenhecameintotheclassroom,Iwasreading.他走进教室时我正在看书。真题直练1.______,hedoesn'tstudywell.A.AsheiscleverC.CleverasheisB.HeisascleverD.Ascleverheis2.______,hewasunabletomakemuchprogress.A.HardashetryC.Ashetriedhard—2CBB.HardashetriedD.Hetriedhard四、考查as构成的固定短语典型命题①________Iknowthemoneyissafe,Ishallnotworryaboutit.A.EventhoughC.AslongasB.UnlessD.While②—Howfarapartdotheylive?—________Iknow,theyliveinthesameneighbourhood.A.AslongasB.AsfarasC.AswellasD.Asoftenas解析:固定短语aslongas,asfaras用作连词,其意义分别为“只要”,“就……而言”,用以引导条件状语从句。特别提示:as相关短语:1.asamatteroffact实际上2.asaresultof结果3.asfor至于;关于4.assoonas一……就……6.asmuchas尽……那么多7.aspossibleas尽可能……8.asto至于5.asmanyas和……一样多9.aswellas又;也真题直练1.Tomkeptquietabouttheaccident________losehisjob.A.sonotastoB.soasnottoC.soastonotD.notsoasto2.Whenapencilispartlyinaglassofwater,itlooksasifit______.A.breaksB.hasbrokenC.werebrokenD.hadbeenbrokenKey:—2BC五、考查as充当关系代词典型命题①________hasbeenannounced,weshallhaveourfinalexamsnextmonth.A.ThatC.ItB.AsD.What②Thesehousesaresoldatsuchalowprice________peopleexpected.A.likeC.thatB.asD.which解析:as充当关系代词,可以引导非限定性定语从句,在定语从句中as常作主语等,as:1)在使用这个结构时应与it引导的主语从句区分开来,it引导的主语从句的结构为:It+be+形容词...that...,其间不要加“,”。例如:句①可改为“Ithasbeenannouncedthatwe...”充当关系代词引导限定性定语从句时,先行词前常有such,thesame与之相呼应,构成such...as,thesame...as句型,as表示“正如……那样”的意思。特别提示:as与which引导非限定性定语从句的区别:1)as引导的非限定性定语从句通常修饰前面整个句子。在定语从句中,as除了能充当一定的句子成分外,还具有“正如像……;由……可知”等意思。2)which引导非限定性定语从句时,其从句常是对主句中某一名词进行补充说明。as句末,而which:Thebookofyours,whichIfinishedreadinglastnight,wasveryinteresting.昨晚我读完的你的那本书很有趣。Aswasexpected,heperformedthetasksuccessfully.正如人们所期望的那样,他成功地完成了那项任务。真题直练1.________isknowntoeverybody,themoontravelsroundtheearthonceeverymonth.A.ItB.AsC.ThatD.What2.________isknowntoall,Chinawillbean________andpowerfulcountryin20or30years'time.A.That;advancingB.This;advancedC.As;advancedD.It;advancing3.Hedoesn'tbelieve________things________youdo.A.thesame;asB.thesame;withC.assame;asD.assame;with4.________ismentionedabove,thenumberofthestudentsinseniorhighschoolsisincreasing.A.WhichC.ThatB.AsD.ItKey:—4BCAB正确解分词题的关键在于找准相关名词,把握主动被动。如果该分词与相关名词有逻辑上的主动关系,就用现在分词;如是被动关系,就用过去分词。1.当分词或分词短语作定语时,其相关名词是被修饰的名词。例1.Thefirsttextbooks________forteachingEnglishasaforeignlanguagecameoutinthe16thcentury.A.havingwrittenB.tobewrittenC.beingwrittenD.written分析:空格至language是定语修饰textbooks,write与textbooks在逻辑上是被动关系,故用过去分词,答案是。说明:由于后有时间状语“在十六世纪”,故“写”的动作已完成,不能用表将来的不定式被动式B项或表现在正在进行的动作的现在分词被动式C项。例2.Thepicture________onthewallispaintedbymynephew.A.havinghungB.hangingC.hangsD.beinghung分析:空格至wall是定语修饰picture,hang与picture在逻辑上是主动关系,故用现在分词,答案是。说明:图画挂在墙上是一种状态,而D项的beinghung表示正在被挂上去的动作,故为错项。2.当分词或分词短语作表语时,其相关名词是句子的主语。例3.Thefilmwasreally________.Weweregreatly________whileseeingit.A.moving;movingB.moved;movedC.moving;movedD.moved;moving分析:本题两个分词均在连系动词之后,故均为表语。film与move在逻辑上是主动关系,故第一个空用现在分词,表“电影令人感动”。We与move在逻辑上是被动关系,故第二个空用过去分词,表“我们深为感动”,答案是C。3.当分词或分词短语作状语时,其相关名词是句子的主语。例4.Hesentmeane-mail,________togetfurtherinformation.A.hopedB.hopingC.tohopeD.hope分析:根据句意及句子结构,hope与主语He在逻辑上是主动关系,故用现在分词,答案是B。说明:空格前面有逗号,故空格处作状语,不能选hoped作状语。例5.________in1636,HarvardisoneofthemostfamousuniversitiesintheUnitedStates.A.BeingfoundedB.ItwasfoundedC.FoundedD.Founding分析:空格处至1636是状语,found与句子主语Harvard在逻辑上是被动关系,故用过去分词,答案是C。说明:1636后是逗号而不是句号,也没有连词and,故开头部分不是句子,B为错项。例6.Theresearchissodesignedthatonce________nothingcanbedonetochangeit.A.beginsB.havingbegunC.beginningD.begun分析:本题含有so...that,主语是nothing,begin与nothing在逻辑上是被动关系,故用过去分词,答案是。例7.Europeanfootballisplayedin80countries,________itthemostpopularsportintheworld.A.makingB.makesC.madeD.tomake分析:空格处至结束是结果状语。本题中与make相关的不是一个名词而是Europeanfootballisplayedin80countries这件事,它们二者在逻辑上是主动关系,故用现在分词,答案是。说明:空格前面是逗号,没有关系代词which,故不能用