1牛津高中英语语法复习(模块3-4)名词性从句名词性从句相当于名词,可分别作主句的主语、表语、宾语和同位语。因此,名词性从句厅分为主语从句、表语从句、宾语从句和同位从句。(一)引导名词性从句的连接词1、连接代词:who,whose,whom,what,which。有词义,在从句中担任成分,如主语、表语、宾语、或定语等。2、连接副词:when,where,why,how。有词义,在从句中担任成分,作状语。3、连接词:that,whether,if,asif。that无词义,在从句中不担任成分,有时可省略;if(whether),asif虽有词义,但在从句中不担任成分。注意:连接代词与连接副词在句中不再是疑问句,因而从句中谓语不用疑问式。连接代词与连接副词在从句充当句子成分,连接词whether和if(是否),asif(好象)在从句中不充当句子成分,只起连接作用。根据句义,如果连接代词与连接副词,whether、if和asif都用不上时,才用that作连接词(that本身无任何含义)。(二)主语从句1、主语从句在复合句作主语。e.g.Whowillgoisnotimportant.2、用it作形式主语,主语从句放在句末。e.g.Itdoesn’tmattersomuchwhetheryouwillcomeornot.3、that引导主语从句时,不能省略。e.g.Thathesuddenlyfellilllastweekmadeussurprised.(三)表语从句1、表语从句在复合句中作表语,位于系动词之后。e.g.Thequestionwaswhocouldgothere.2、引导表语从句的连接词that有时可省去。e.g.Myideais(that)wecangetmorecomradestohelpinthework.(四)宾语从句1、宾语从句在复合句中作宾语。引导宾语从句的连词that一般可省略。e.g.Ihope(that)everythingisallright.2、介词之后的宾语从句,不可用which或if连接,要分别用what或whether。e.g.I’minterestedinwhetheryou’vefinishedthework..I’minterestedinwhatyou’vesaid.3、whether与if都可以引导宾语从句,常可互换。但下面情况不能互换。①宾语从句是否定句时,只用if,不用whether。e.g.Iwonderifitdoesn’train.②用if会引起误解,就要用whether。e.g.Pleaseletmeknowwhetheryouwanttogo.(此句如果把whether改成if,容易当成条件句理解)③宾语从句中的whether与ornot直接连用,就不能换成if;不直接连用,可换。e.g.Idon’tknowwhetherornotthereportistrue.Idon’tknowwhether/ifthereportistrueornot.④介词后的宾语从句要用whether引导。whether可与不定式连用。whether也可引导主语从句、表语从句、同位语从句,还可引导让步状语从句,以上均不能换成if。但引导条件从句时,只能用if,而不能用whether。e.g.Itdependsonwhetherwehaveenoughtime.Theydon’tknowwhethertogothere.Pleasecometoseemeifyouhavetime.2(五)同位语从句同位语从句在句中作某一名词的同位语,一般位于该名词(如:news,fact,idea,suggestion,promise等)之后,说明该名词的具体内容。e.g.Ihavenoideawhenhewillbeback.Thefactthathehadnotsaidanythingsurprisedeverybody.练习:1.Thefact____sheworkshardiswellknowntousall.A.thatB.whatC.whyD.which2.Thefact____hewassuccessfulproveshisability.A.thatB.whatC.whichD.why3.Thenews____hewaskidnappedsurprisedusgreatly.A.whatB.thatC.whyD.when4.Hissuggestion____themeetingbedelayedwasturneddown.A.whichB.thatC./D.it5.Ihavenoidea____hewillstart.A.whenB.thatC.whatD./6.I'vecomefromthegovernmentwithamessage____themeetingwon'tbeheldtomorrow.A.ifB.thatC.whetherD.which7.Thethought____hemightfailintheexamworriedhim.A.whenB.whichC.whatD.that8.Theorder____theprisonerbesetfreearrivedtoolate.A.whichB.whetherC.thatD.what9.Thenursesaretryingtheirbesttoreducethepatient'sfear____hewoulddieofthedisease.A.thatB.asC.ofwhichD.which10.Heoftenaskedmethequestion____theworkwasworthdoing.A.whetherB.whereC.thatD.when11.Alongwiththeletterwashispromise____hewouldvisitmethiscomingChristmas.A.whichB.thatC.whatD.whether12.Theotherday,mybrotherdrovehiscardownthestreetat____Ithoughtwasadangerousspeed.A.asB.whichC.whatD.that13.Luckily,we’dbroughtaroadmapwithout____wewouldhavelostourway.A.itB.thatC.thisD.which14.Therearesigns____restaurantsarebecomingmorepopularwithfamilies.A.thatB.whichC.inwhichD.whose15.Wecanseethesamesigns____standoutthroughoutthecity.A.thatB.whichC.inwhichD.whoseKeys:1-5AABBA6-10BDCAA11-15BBDAA主谓一致在英语句子里,谓语受主语支配,其动词必须和主语在人称和数上保持一致,这就叫主谓一致。寻其规律,大致可归纳为三个原则,即语法一致、逻辑意义一致和就近一致原则。(一)语法一致原则:语法上一致就是谓语动词和主语在单、复数形式上保持一致。1、以单数名词或代词、动词不定式短语、动名词短语或从句作主语时,谓语动词一般用单数形式;3主语为复数时,谓语动词用复数形式。如:Hisfatherisworkingonthefarm./TostudyEnglishwellisnoteasy./Whathesaidisveryimportantforusall./Thechildrenwereintheclassroomtwohoursago./Readinginthesunisbadforyoureyes.注意:由what引导的主语从句,后面的谓语动词多数情况用单数形式,但若表语是复数或what从句是一个带有复数意义的并列结构时,主句的谓语动词用复数形式。如:WhatIboughtwerethreeEnglishbooks./WhatIsayanddois(are)helpfultoyou.2、由连接词and或both…and连接起来的合成主语后面,要用复数形式的谓语动词。如:LucyandLilyaretwins./SheandIareclassmates./Theboyandthegirlweresurprisedwhentheyheardthenews./BothsheandheareYoungPioneers.注意:①若and所连接的两个词是指同一个人或物时,它后面的谓语动词就应用单数形式。如:Thewriterandartisthascome.;/②由and连接的并列单数主语前如果分别有no,each,everymorethana(an),manya(an)修饰时,其谓语动词要用单数形式。如:Everystudentandeveryteacherwasintheroom../Noboyandnogirllikesit.3、主语为单数名词或代词,尽管后面跟有with,togetherwith,except,but,like,aswellas,ratherthan,morethan,nolessthan,besides,including等引起的短语,谓语动词仍用单数形式;若主语为复数,谓语用复数形式。如:MrGreen,togetherwithhiswifeandchildren,hascometoChina./NobodybutJimandMikewasontheplayground./She,likeyouandTom,isverytall.4、either,neither,each,every或no+单数名词和由some,any,no,every构成的复合不定代词,都作单数看待。如:Eachofushasanewbook./Everythingaroundusismatter.注意:①在口语中当either或neither后跟有“of+复数名词(或代词)”作主语时,其谓语动词也可用复数。如:Neitherofthetextsis(are)interesting.②若noneof后面的名词是不可数名词,它的谓语动词就要用单数;若它后面的名词是复数,它的谓语动词用单数或复数都可以。如:Noneofushas(have)beentoAmerica.5、在定语从句时,关系代词that,who,which等作主语时,其谓语动词的数应与句中先行词的数一致。如:Heisoneofmyfriendswhoareworkinghard./Heistheonlyoneofmyfriendswhoisworkinghard.6、如果集体名词指的是整个集体,它的谓语动词用单数;如果它指集体的成员,其谓语动词就用复数形式。这些词有family,class,crowd,committee,population,audience等。如:ClassFourisonthethirdfloor./ClassFourareunabletoagreeuponamonitor.注意:people,police,cattle等名词一般都用作复数。如:Thepolicearelookingforthelostchild.7、由“alotof,lotsof,plentyof,therestof,themajorityof+名词”构成的短语以及由“分数或百分数+名词”构成的短语作主语,其谓语动词的数要根据短语中后面名词的数而定。如:Therearealotofpeopleintheclassroom./Therestofthelectureiswonderful./50%ofthestudentsinourclassaregirls.注意:anumberof“许多”,作定语修饰复数名词,谓语用复数;thenumberof“…的数量”,主语