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六级考试过关得分语法必看定冠词限定名词时主要表示特指,针对TOEFL应注意以下几点:(1)the和可数名词单数连用,表示一类人或物,如:thefern(蕨类),thewallflower(2)序数词之前必须用the,如:thefirstwoman,thenineteenthcentury但前面有物主代词时除外,如myfirstbaby(3)形容词最高级之前必须用the(有物主代词时除外),如:thelargestcity,themostadvancedtechnology(4)of连接的名词前多用the,如:thedevelopmentofthewatch,(5)世界上独一无二的东西前应加the,如:theglobe(地球),theequator(赤道),themoon,thesun在下列情况下,一般不用the:(1)表示人名、地名、国家名等专有名词前,一般不加,如:DennisChavez(人名),Alaska(地名),English(英语),February(二月),America(美国)但是在表示海洋、海峡、江、河、山脉、群岛等专有名词时要加上thetheGreatLakes(美国五大湖),theChangjiangRiver(长江)(2)无特指的不可数名词前,如:algebra(代数学),advertising,accounting(会计学)(3)表示类别的复数名词前,如:Historiansbelievethat…,Amphibians(两栖动物)hatchfrom…
1(4)一些固定词组中,如:inhistory,innature,atwork,athome,gotoschool,gotobed,inbed乘车的词组:bytrain(乘火车),bycar(乘汽车),bybicycle(骑脚踏车),bybus(乘公共汽车),byland(由陆路),bysea(由海路),bywater(由水路),byair(通过航空)onfoot(步行),byplane(乘飞机),byship(乘船),打球的词组:playtennis,playbaseball,playbasketball注意:表示职位的词之前的冠词有无均可,如:Hewaselected(the)chairmanofthecommittee.不可数名词的限定词和不可数名词原形连用,下面这些限定词后面一定跟不可数名词:much,alargeamountof,agreatdealof,awealthof(大量的、丰富的)little/alittle/less/least,apiece/sheet/slice/barof,属不可数名词专用另外一些词(词组)如such,some/any(of),most(of),alotof,lotsof,therestof,plentyof等既可接可数名词又可接不可数名词。有些形容词本身就具有“比….年长”、“比…..优越”等含义,因此也就没有比
2较级和最高级。比如:inferior,superior,senior,anterior。这些形容词往往和to连用,而不和than连用。有些形容词本身就具备“最、极”的含义,所以就没有最高级和比较级。如:absolute(绝对的),unique(独一无二的),infinite(无限的),round(圆的),right(对的),correct(正确的),wrong(错误的),perfect(完美的),这类形容词往往被称为绝对形容词对于most来讲,除了构成某些词最高级外,most的用法有几点需要注意,经常成为改错题的考点:1.当most表示大多数时,之前不加the,并且有两种形式来表示大多数,分别为:most+名词,如:mostpeople,mostIndiantribes;most+of+限定词+名词或代词,如:mostofhispaintings,mostofus,mostofthemodernartists2.most有时意思等同于very,此时most之前用不定冠词,如:amostlovelygirl,amostimpressiveproposal例题:(1)
3Themostsubstancesexpandinvolumewhentheyareheated.A B C D答案:A应改为:Most解释:most只有在表示形容词最高级作定语时需加定冠词,此句表示“大多数”,没必要加the.AluminumisthemostabundantmetalinthecrustoftheEarth,butthenonmetalsA B Coxygenandsiliconaremorestillabundant.D考点:程度副词答案:D应改为:stillmore解释:程度副词still修饰比较级more时,应置于其前几点参考规则:1.多数副词放在修饰的动词之后,若动词有宾语则放在宾语之后,如:Shesingsverywell.Imetyouruncle(动词的宾语)justnow.Imetjustnowyouruncle(错)
42.副词修饰形容词、介词短语、副词时常放在被修饰成分之前,如:Thesetwoareonlyslightlydifferent.rightafterthis,verysmoothly当然,副词enough是一个例外,要放在修饰成分的后面,如:Iamnotgoodenoughtodothisjob.(对)Iamnotenoughgoodtodothisjob.(错)3.表示频率的副词常放在实意动词之前,be动词之后,如:Heoften/always/rarely/seldom/neverplay(实意动词)tennis.Heisalwayshereat8’clock.(be动词之后)4.部分副词的位置没有一定的规定,原则上接近被修饰词即可,如:only,even,still,perhaps,etc.第四节容易混淆的词D考点:程度副词答案:D应改为:stillmore解释:程度副词still修饰比较级more时,应置于其前几点参考规则:1.多数副词放在修饰的动词之后,若动词有宾语则放在宾语之后,如:Shesingsverywell.Imetyouruncle(动词的宾语)justnow.Imetjustnowyouruncle(错)
52.副词修饰形容词、介词短语、副词时常放在被修饰成分之前,如:Thesetwoareonlyslightlydifferent.rightafterthis,verysmoothly当然,副词enough是一个例外,要放在修饰成分的后面,如:Iamnotgoodenoughtodothisjob.(对)Iamnotenoughgoodtodothisjob.(错)3.表示频率的副词常放在实意动词之前,be动词之后,如:Heoften/always/rarely/seldom/neverplay(实意动词)tennis.Heisalwayshereat8’clock.(be动词之后)4.部分副词的位置没有一定的规定,原则上接近被修饰词即可,如:only,even,still,perhaps,etc.第四节容易混淆的词hard(努力,副词)-hardly(几乎不,副词)close(接近,形容词)-closely(接近,副词)near(接近,形容词)-nearly(几乎,副词),nearby(adj.邻近的)most(大多数的,形容词)-mostly(主要地,大部分副词)late(迟、晚,形容词)-lately(最近,副词),later(adv.稍后的)high(高的,形容词)-highly(adv.非常,大大的)另外:friendly(友好的),lovely(可爱的、有趣的),尽管词尾有ly,但是都是形
6容词作主语:不定式短语可作主语如:Toseeistobelieve(百闻不如一见)Toworkhardshouldbeyourmajorconcern.注意:由于英文不习惯句子主语过长,不定式主语常被形式主语it所代替(详见第十七章)例如上面第二句可以变为:Itshouldbeyourmajorconcerntoworkhard.又如:Itisveryniceofyoutohelpme不定式常接在名词之后作定语,如:somethingtoread,nothingtodo,anythingtodeclare,alottocomplainof,therightpersontotalkto,etc.由上述例子不难看出不定式和被修饰词间有动宾关系,因此不及物动词之后必须加上相搭配的介词(例如上面的complain+of,talk+to)不定式定语还可表示将来的含义,如:intheyearstofollow,themeetingtobeheldinJune独立主格的主语和句子主语不一致如:(With)Hismouthfilledwithwater,hecouldn’tutteraword.(独立主格)对于分词来讲其逻辑主语必须和句子的主语保持一致:
7Fillinghismouthwithwater,hecouldn’tutteraword.在TOEFL考试中,经常混淆反身代词的写法,结尾的-self和-selves经常故意写错反身代词的用法可以用来做宾语:Hehurthimselfwhenhefell.可以用来做表语:Heisnotquitehimselftoday.(他今天有些不舒服)反身代词经常放在名词或者代名词的后面来进行强调,表示“亲自”的意思Imyselfdoit.Idoitmyself.Theymadetheresearchthemselves.但是不能够说:Himselfdoesit.应改为:Hedoesit.Thisishimself’sbook..应改为:Thisishisownbook..牢记makepossible的三种形式:1.make+名词+possible;Hisfinancialaidmakesthistrippossible.2.make+possible+名词(名词短语较长时)HisfinancialaidmakespossiblethepoorChinesestudent’senteringoftheworldfamousuniversity.3.makeitpossible(forsb.)todo(见形式宾语部分)Thefather’shardlabormakesitpossibleforthesontoreceivebettered
8ucation.定语从句可分为限定性和非限定性两种,其主要区别为:1.非限定性定语从句中,引导词和先行词之间需用逗号隔开。2.非限定性定语从句中,引导词一般不用that,在修饰人时用who,whom,whoseHehadthreechildren,allofwhomhadgraduatedfromcollege.在修饰物时用which部分状语从句可以省略,在填空题中时有出现如:Althoughdefeated,hedidnotloseheart.(从句中省略了hewas)IfinFORMedtimely,Iwouldn’thavemissedthemeeting.(从句中省略了Iwere)注意:当现在完成时的时间状语是for+一段时间(已经有…时间了),和since+一个时间点(自从…以来)的时候,句中的谓语不能是非延续性动词(暂短性动词),如不能说:Ihaveborrowedthebookfortendays.(错误:borrow这个动作是发生在图书出纳台上的一次性动作,不能延续,因此不能和for引导的时间状语连用)应改为:Ihavekeptthebookfortendays.这样的暂短性动词还有:buy/sell,break,die,graduate,drop等倒装倒装句就是将正常的陈述语序加以变化,主要作用是强调被提前的部分
9倒装句可分为全部倒装和部分倒装两种:一、全部倒装谓语动词提前至主语之前为全部倒装,如:Outcamehisguest.Onthehillstoodalittlecottagethatcontainedheapsofhay.Therelivedanelderlyladywhosehusbanddiedlongago.二、部分倒装助动词或情态动词提至主语之前,谓语动词位置不变,即为部分倒装,如:Neithercouldheseethroughyourplan.SolittledidIknowabouthimthatIwaseasilytakeninbyhiswords.Doesn’therinvitationappealtoyou?第一节否定词提前倒装否定词用于句首时,句子应进行部分倒装否定词常用的有:Notonly…(butalso), Notuntil(直到…..才),Nosooner….(than)(一…..就)Never/Rarely/SeldomHardly/Scarcely…(when)Few/LittleNeither/Nor(也不) NwhereAtnotime Undernocircumstances(决不)Onnoaccount(决不) Innoway其中notonly,nosooner,hardly,scarcely分别和but(also),than,when搭配使
10用,需注意:后一组词之后的部分不进行倒装,只有否定词之后的部分倒装如:HardlyhadIarrivedhomewhenitbegantorain.Notonlywasheabletoenterthefinalroundofthecontest,buthecameoutfirstaswell.NosoonerhadIgotanychancetospeakthantheclerkslammedthedoorinmyface.Seldomdoeshetravelabout.Undernocircumstancesshouldyoubetrayyourowncountry.此类倒装句一般出现在填空题中,需填入的是倒装部分,只要在句首见到上述的词,就应条件反射的想到用倒装句第二节介词、分词词组提前倒装当句子没有宾语,且主语偏长时,往往将句中作状语的介词短语或作表语的形容词短语或作表语的分词短语提至句首,引起主谓的全部倒装如:Inthemiddleoftheriverfloatedtheclusterofplantsthatshehadcast.Characteristicofananarchistwasherstrongoppositiontothegovernment,whichshehadblamedforallthesocialinjustices.Lyingonthegrasslandisaprettygirlinherearlytwenties.第三节副词提前倒装
11副词提至句首引起倒装,可分以下几种情况:1.only+副词(when,before,if,after等)或only+介词状语(由in,under,by,on,after等引导)提前,必须部分倒装如:Onlythendidherealizehowstupidhehadbeen.OnlyafterenteringthestoredidArthurrealizethattherewasdanger.Onlyinthelibrarycansheconcentrateonherstudy.2.often,such,so等副词提前,部分倒装如:Sodiligentlydidheworkthathegothightscoresonthefinalexam.=Heworkedsodiligentlythathegothightscoresonthefinalexam.Suchwashiswishthattheworldwouldstayawayfromwarforever.Oftendidwegoonaholidayinhotsummer.注意,so的另一种倒装是表示“也…”Californiareliesheavilyonincomefromcrops,andsodoesFlorida.加利福尼亚过多的依赖于来自农作物的收入,佛罗里达也是这样同理,体会一下neither,nor的倒装Hecan’tdance,neither/norcanI.=Ican’t,either.他不会跳舞,我也不会。3.in,out,down,up,away,off,here,there,over等副词提前,全部倒装如:Offgotthestaggeringgentlemen.HerearethephotosItookattheseaside.
12第四节疑问倒装疑问句需部分倒装语序,由于经常用到不会成为考试的难点。如:WhatpartdidheplayinHamlet?Doyoupreferteaorcoffee?by可视为被动语态的标志词,by之后的名词短语是句中动作的施动者;在题干中若见到by+名词的结构要优先考虑用被动式如:ThewallispaintedbyTom.ThebookwaswrittenbyMarkTwain.注意1:by之后如果接的是动名词,则表示方式、手段,不能视为被动式的标志,且此时谓语应用主动式,如:Hepassedtheexambycheating.注意2:对于know来讲,一般用beknownto而不用beknowby强调句中it作形式主语可以替代任何被强调的部分基本模式:It+be+强调对象+who/whom/that+句子其余部分如:Itwasonlyyouwhocaredforme.(强调主语)Itishissisterwhom/thatIhavefalleninlovewith.(强调宾语)Itwasunderthetreethatshefoundhermissingpurse.(强调地点状语)ItwaslastweekthatIattendedanartexhibitforthefirsttime.(强调时间状语)ItwasnotuntilhebrokemyfavoritevasethatIflewintorages.(强调
13状语从句)注意:强调的对象是人时,可用who,whom或that,其余情况一律用that;当强调对象在从句中做主语时用who/that,当强调对象在从句中做宾语时用whom/that.虚拟语气此章内容在TOEFL考点中处于相对次要地位,但在英文中是比较活跃的用法,必须对其有所了解,这样对读题非常有帮助虚拟语气是英文中一特殊的语言现象,主要用于表达与事实相反的陈述,常表达强烈愿望、遗憾、感慨、后悔、责备、规劝等语义,可大致分为三类一、对现在事实的虚拟基本形式:If+were/did等过去式…,…would/could/should/might+do例如:IfIwereabird,Iwouldflytothemoon.(事实上,I’mnotabird,soIwillnotflytothemoon.)Ifsheknewwhoyouare,shewouldgooutofjoy.(事实上,Shedoesn’tknow,soshestillfeelsjoyous.)二、对过去事实的虚拟基本形式:If+haddone…,…would/could/should/might+havedone例如:Ifshehadbeenwarnedearlier,shewouldn’thavebrokentherules.(事实上:Shewasnotwarnedearlierandshebroketherules.)Ifithadn’trained,thematchwouldhaveseemedmorefascinating.
14(事实上:Itrainedandthematchwaslessfascinating.)此种虚拟可进行倒装,如:Hadtheletterbeensentout,itwouldhaveruinedourfriendship.=Iftheletterhadbeensentout,itwouldhaveruinedourfriendship.三、对将来事实的虚拟基本形式:If+shoulddo…,…would/could/should/might+do;意思类似汉语中的“万一”例如:Ifheshouldforgetthedate,Imightteachhimagoodlesson.(事实上:他不大可能忘记那个日期)Ifitshouldsnowthisafternoon,wecouldmakeasnowman.(事实上不大可能会下雪)此种虚拟可倒装,如:Shouldmycarfail,Iwouldhavetoreturnhomeonfoot.=Ifmycarshouldfail,Iwouldhavetoreturnhomeonfoot.注意1:部分动词的宾语从句中需用虚拟语气,形式为shoulddo,其中should常被省略。此类动词有:insist,demand,suggest,propose,order,require,decide,ask,request等.例句:Weallinsistthatwe(should)notrestuntilwefinishthework.Theprofessorsuggeststhatthestudents(should)collectenoughmateialsbeforetheyworkonthisproject.
15上面的动词如果以名词形式出现时,后面的that从句仍然要采用虚拟语气HegivesmethesuggestionthatI(should)eatbreakfasteverymoning.注意2:在一些惯用语之后经常需要用虚拟,来表示与事实相反或者难以实现的事情这类习语有:asif,asthough,butfor,otherwise,without,wish,ifonly等例句:Butforyourhelp,Iwouldnothavearrivedhereintime.(如果没有你的帮助,我就不能准时到达)Withoutyourhelp,Iwouldnotarrivehereintime.注意3:在下列形容词引导的that从句中必须要用虚拟语气(should)do,但是由于should经常被省略,所以实际上用的就是动词原形。这类形容词有:Itisimportant/necessary/proper/imperative/essential/advisable等+that例句:Itisnecessarythathe(should)realizehissituation.一致原则一致原则贯穿英语语法,在前面各个章节中已有涉及,本章作为对前面的补充,集中讲TOEFL题中常考的问题第一节主谓一致主谓一致指的是主语和谓语在数上要保持一致.在英语除了时态的变化外,名词、动词的数也有差别,这就要求主语(以名词为代表)和谓语(包括助动词)在数上要一
16致如:1.在名词+of+名词这种结构中,前一个名词是整个短语的中心词,当该短语作主语时,一般以of之前名词的数为依据确定谓语的数.oneof之后需接复数名词,但oneof+名词作主语时中心词是one,故谓语应用单数Oneofmystudentswinsthegame.2.由and连接的多个名词作主语,谓语动词应用复数Careerandloveareimportanttome.Jim,JohnandMaryareplayingfootball.但是如果用and连接起来表示单一的概念时,谓语动词要用单数Thefamoussingerandactress,WhitneyHustoniscomingtotheceremony.(在这里,singer和actress指得是同一人,都是WhitneyHuston)3.不可数名词,尤其是抽象名词(relation,authority,necessity,power,democracy,young等)作主语时要视为单数,谓语自然也要用单数Therelationbetweenusisverysimple.4.单个从句作主语时,谓语用单数Thatshehasgoneinsaneissheerrumor.Whentheywillcomehasn’tbeenmadepublic.5.如果主语是单数,那么即使后面有with/togetherwith/alongwith/accompanied
17by,nolessthan,like,but,except,including,besides等引导的短语,谓语动词仍然要是用单数例如:Theboy,togetherwithhisparents,goestothecinematoday.Nooneexceptthetwoboysknowshowtosolvethisproblem.6.由NotAbutB,NotonlyAbutalsoB,eitherAorB,neitherAnorB引导的主语,谓语通常和最邻近的主语相一致EitheryouorMaryhurtsher.NeithermywifenorImyselfamabletopersuademydaughtertochangehermind.Notyoubutheistiredoftyping.Notonlythestudentsbutalsotheteacherisgoingtobeblamed.7.在therebe句型、介词短语、副词为句首引起的倒装句中,真正的主语通常在谓语的后面,谓语应该和后面的主语在数方面相一致。但是在therebe句型中,如果有两个或者两个以上的主语,必须和最接近他的那个主语相一致。Therearealotofbooksonthetable.Thereisonlyonepencil,twobooksandonecuponthetable.Manyatimehashegivenusgoodadvice.第二节主从句时态一致主从句语义相互关联,时态也需呼应,所谓一致并不是说主从句的时态要一模一样,而是不能脱节,一般的原则是不能跨越大的时间范畴,如:主句是一般过去时,从句
18可能是过去完成时或过去将来时,而不大可能是现在时或将来时,当然具体情况还应具体分析,但针对解答TOEFL题而言,掌握上述原则已是绰绰有余1.通常当主句中的时态是现在时或将来时态时,从句中的动词时态并不受影响,往往还是根据从句的意思而定。Iknowthathewillcometomorrow.Iknowthathehasfinishedreadingthisbook.Iknowthathewenttoschoolyesterday.2.当主句中的时态是过去时态,那么从句中的时态要作一定的变化Iknewthathewouldcometomorrow.(现在将来时变为了过去完成时)Iknewthathehadfinishedreadingthisbook.(现在完成时过去完成时)Iwastoldthathewasfreetoday.(现在时态变为过去时态)第三节代词与其先行词一致在讲代词一章时已提到代词的作用是替代已出现过的词,即先行词,那么代词和先行词之间也应保持性、数的一致才能保证替代的忠实性,不引起误解在改错题中,确定代词的先行词是解题的关键,主要是依靠句意来判断,还需留意下列情况:1.反身代词需和所在主谓结构的主语一致,若不一致应改为宾格形式如:Hermotherhelpedhersolvetheproblem.此句中helped之后若用herself则指的是hermother,语义不同2.在主从句中,或有分词状语的句子中,代词所代替的对象有可能在其后出现,要准确识别
19如:Aftersheenteredtheroom,Maryflungherselftothebed.此句中she指代的是主句中的Mary更多四六级免费资料请访问新东方在线www.koolearn.com最新考试动态新东方名师指导历年真题下载名师在线讲座VIP精选资料