as考點(diǎn)歸納大全

一、考查as原級(jí)比較結(jié)構(gòu)及插入名詞的位置問題典型命題:1.Ourneighbourhas______ours.A.asabighouseasB.asbigahouseasC.thesamebighouseasD.ahousethesamebigas2.Johnplaysfootball______,ifnotbetterthan,David.A.aswellB.aswellasC.sowellD.sowellas解析:一般來講,形容詞、副詞原級(jí)比較的結(jié)構(gòu)為“...(not)as”表示前者與后者一樣/不一樣。如果中間有名詞,其常用結(jié)構(gòu)為“...as+adj.+a(n)+名詞+as...”。真題直練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構(gòu)成的倍數(shù)表達(dá)法典型命題: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時(shí)“……倍數(shù)+as+原級(jí)形容詞/副詞……”為一常用結(jié)構(gòu)。真題直練1.WiththehelpoftheGermanexperts,thefactoryproduced______carsin1993astheyearbefore.A.astwicemanyB.asmanyastwiceC.astwiceasmanyD.twiceasmany2.Afterthenewtechniquewasintroduced,thefactoryproduced______tractorsin1988astheyearbefore.A.astwicemanyB.asmanytwiceC.twiceasmanyD.twicemanyas—2DC三、考查充當(dāng)連詞的as典型命題:1.______,Ihaveneverseenanyonewho'sasA.AslongasIhavetravelledcapableasJohn.B.NowthatIhavetravelledsomuchC.MuchasIhavetravelledD.AsIhavetravelledsomuch解析:此題中as引導(dǎo)倒裝結(jié)構(gòu),表示讓步關(guān)系,其結(jié)構(gòu)為“……as+主語+謂語……”。特別提示:使用此結(jié)構(gòu)時(shí)應(yīng)注意以下幾點(diǎn):1)倒裝的部分一般為表語、狀語和動(dòng)詞原形。表語是不帶定語的單數(shù)可數(shù)名詞,其前面的要省去;3)倒裝的動(dòng)詞原形常與may,might,will,would等詞連用,但這些詞都要保留在原來位置上。如:Childasheis,hespeaksEnglishwell.他雖是個(gè)孩子,但英語說得很好。MuchasIlikethebook,butIhavenomoneytobuyit.雖然我非常喜歡這本書,但我卻沒錢買。Tryashemight,Tomcouldnotfindajob.不管怎樣努力,湯姆還是找不到一份工作。2.MotherwasworriedbecauselittleAlicewasill,especially______FatherwasawayinFrance.A.asB.thatC.duringD.if解析:此題中as充當(dāng)從屬連詞,作“當(dāng)……的時(shí)候”解,引導(dǎo)時(shí)間狀語從句,表示主句動(dòng)作與從句動(dòng)作同時(shí)發(fā)生。在使用as時(shí)應(yīng)注意其與while和when的區(qū)別:1)while常表示一段較長(zhǎng)的時(shí)間或一個(gè)過程,強(qiáng)調(diào)主句謂語動(dòng)詞與從句謂語動(dòng)詞所表示的動(dòng)作同時(shí)發(fā)生,為“在……期間”之意。如:WhileIwasreadingletterslastnight,hewaswatching昨晚我看信時(shí),他在看電視。2)when可用來表示一段時(shí)間,意為“在……期間”,與延續(xù)性動(dòng)詞連用;也可用來表示時(shí)間點(diǎn),意為“當(dāng)……時(shí)候”,與非延續(xù)性動(dòng)詞連用。如:Ifellasleepwhenhewasdoinghisexercises.他做練習(xí)時(shí)我睡著了。Whenhecameintotheclassroom,Iwasreading.他走進(jìn)教室時(shí)我正在看書。真題直練1.______,hedoesn'tstudywell.A.AsheiscleverC.CleverasheisB.HeisascleverD.Ascleverheis2.______,hewasunabletomakemuchprogress.A.HardashetryC.Ashetriedhard—2CBB.HardashetriedD.Hetriedhard四、考查as構(gòu)成的固定短語典型命題①________Iknowthemoneyissafe,Ishallnotworryaboutit.A.EventhoughC.AslongasB.UnlessD.While②—Howfarapartdotheylive?—________Iknow,theyliveinthesameneighbourhood.A.AslongasB.AsfarasC.AswellasD.Asoftenas解析:固定短語aslongas,asfaras用作連詞,其意義分別為“只要”,“就……而言”,用以引導(dǎo)條件狀語從句。特別提示:as相關(guān)短語:1.asamatteroffact實(shí)際上2.asaresultof結(jié)果3.asfor至于;關(guān)于4.assoonas一……就……6.asmuchas盡……那么多7.aspossibleas盡可能……8.asto至于5.asmanyas和……一樣多9.aswellas又;也真題直練1.Tomkeptquietabouttheaccident________losehisjob.A.sonotastoB.soasnottoC.soastonotD.notsoasto2.Whenapencilispartlyinaglassofwater,itlooksasifit______.A.breaksB.hasbrokenC.werebrokenD.hadbeenbrokenKey:—2BC五、考查as充當(dāng)關(guān)系代詞典型命題①________hasbeenannounced,weshallhaveourfinalexamsnextmonth.A.ThatC.ItB.AsD.What②Thesehousesaresoldatsuchalowprice________peopleexpected.A.likeC.thatB.asD.which解析:as充當(dāng)關(guān)系代詞,可以引導(dǎo)非限定性定語從句,在定語從句中as常作主語等,as:1)在使用這個(gè)結(jié)構(gòu)時(shí)應(yīng)與it引導(dǎo)的主語從句區(qū)分開來,it引導(dǎo)的主語從句的結(jié)構(gòu)為:It+be+形容詞...that...,其間不要加“,”。例如:句①可改為“Ithasbeenannouncedthatwe...”充當(dāng)關(guān)系代詞引導(dǎo)限定性定語從句時(shí),先行詞前常有such,thesame與之相呼應(yīng),構(gòu)成such...as,thesame...as句型,as表示“正如……那樣”的意思。特別提示:as與which引導(dǎo)非限定性定語從句的區(qū)別:1)as引導(dǎo)的非限定性定語從句通常修飾前面整個(gè)句子。在定語從句中,as除了能充當(dāng)一定的句子成分外,還具有“正如像……;由……可知”等意思。2)which引導(dǎo)非限定性定語從句時(shí),其從句常是對(duì)主句中某一名詞進(jìn)行補(bǔ)充說明。as句末,而which:Thebookofyours,whichIfinishedreadinglastnight,wasveryinteresting.昨晚我讀完的你的那本書很有趣。Aswasexpected,heperformedthetasksuccessfully.正如人們所期望的那樣,他成功地完成了那項(xiàng)任務(wù)。真題直練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正確解分詞題的關(guān)鍵在于找準(zhǔn)相關(guān)名詞,把握主動(dòng)被動(dòng)。如果該分詞與相關(guān)名詞有邏輯上的主動(dòng)關(guān)系,就用現(xiàn)在分詞;如是被動(dòng)關(guān)系,就用過去分詞。1.當(dāng)分詞或分詞短語作定語時(shí),其相關(guān)名詞是被修飾的名詞。例1.Thefirsttextbooks________forteachingEnglishasaforeignlanguagecameoutinthe16thcentury.A.havingwrittenB.tobewrittenC.beingwrittenD.written分析:空格至language是定語修飾textbooks,write與textbooks在邏輯上是被動(dòng)關(guān)系,故用過去分詞,答案是。說明:由于后有時(shí)間狀語“在十六世紀(jì)”,故“寫”的動(dòng)作已完成,不能用表將來的不定式被動(dòng)式B項(xiàng)或表現(xiàn)在正在進(jìn)行的動(dòng)作的現(xiàn)在分詞被動(dòng)式C項(xiàng)。例2.Thepicture________onthewallispaintedbymynephew.A.havinghungB.hangingC.hangsD.beinghung分析:空格至wall是定語修飾picture,hang與picture在邏輯上是主動(dòng)關(guān)系,故用現(xiàn)在分詞,答案是。說明:圖畫掛在墻上是一種狀態(tài),而D項(xiàng)的beinghung表示正在被掛上去的動(dòng)作,故為錯(cuò)項(xiàng)。2.當(dāng)分詞或分詞短語作表語時(shí),其相關(guān)名詞是句子的主語。例3.Thefilmwasreally________.Weweregreatly________whileseeingit.A.moving;movingB.moved;movedC.moving;movedD.moved;moving分析:本題兩個(gè)分詞均在連系動(dòng)詞之后,故均為表語。film與move在邏輯上是主動(dòng)關(guān)系,故第一個(gè)空用現(xiàn)在分詞,表“電影令人感動(dòng)”。We與move在邏輯上是被動(dòng)關(guān)系,故第二個(gè)空用過去分詞,表“我們深為感動(dòng)”,答案是C。3.當(dāng)分詞或分詞短語作狀語時(shí),其相關(guān)名詞是句子的主語。例4.Hesentmeane-mail,________togetfurtherinformation.A.hopedB.hopingC.tohopeD.hope分析:根據(jù)句意及句子結(jié)構(gòu),hope與主語He在邏輯上是主動(dòng)關(guān)系,故用現(xiàn)在分詞,答案是B。說明:空格前面有逗號(hào),故空格處作狀語,不能選hoped作狀語。例5.________in1636,HarvardisoneofthemostfamousuniversitiesintheUnitedStates.A.BeingfoundedB.ItwasfoundedC.FoundedD.Founding分析:空格處至1636是狀語,found與句子主語Harvard在邏輯上是被動(dòng)關(guān)系,故用過去分詞,答案是C。說明:1636后是逗號(hào)而不是句號(hào),也沒有連詞and,故開頭部分不是句子,B為錯(cuò)項(xiàng)。例6.Theresearchissodesignedthatonce________nothingcanbedonetochangeit.A.beginsB.havingbegunC.beginningD.begun分析:本題含有so...that,主語是nothing,begin與nothing在邏輯上是被動(dòng)關(guān)系,故用過去分詞,答案是。例7.Europeanfootballisplayedin80countries,________itthemostpopularsportintheworld.A.makingB.makesC.madeD.tomake分析:空格處至結(jié)束是結(jié)果狀語。本題中與make相關(guān)的不是一個(gè)名詞而是Europeanfootballisplayedin80countries這件事,它們二者在邏輯上是主動(dòng)關(guān)系,故用現(xiàn)在分詞,答案是。說明:空格前面是逗號(hào),沒有關(guān)系代詞which,故不能用