名詞性從句講解及專(zhuān)項(xiàng)練習(xí)習(xí)題及其解答

1、名詞性從句講解一、名詞性從句主語(yǔ)從句、表語(yǔ)從句、賓語(yǔ)從句、同位語(yǔ)從句，在整個(gè)句子中所起的作用，相當(dāng)于一個(gè)名詞。因此，這四種從句通稱(chēng)為名詞性從句。引導(dǎo)名詞性從句的連接詞可分為三類(lèi)：連接詞：that,whether,if(不充當(dāng)從句的任何成分)連接代詞：what,whatever,who,whoever,whom,whose,which.連接副詞：when,where,how,why主語(yǔ)從句作句子主語(yǔ)的從句叫主語(yǔ)從句。主語(yǔ)從句通常由從屬連詞that,whether,if和連接代詞what,who,which,whatever,whoever以及連接副詞how,when,where,why等詞引導(dǎo)。

2、that在句中無(wú)詞義，只起連接作用；連接代詞和連接副詞在句中既保留自己的疑問(wèn)含義、又起連接作用,在從句中充當(dāng)從句的成分。例如：Whathewantstotellusisnotclear.他要跟我們說(shuō)什么,還不清楚。Itisknowntoushowhebecameawriter.我們都知道他是如何成為一名作家的。WheretheEnglisheveningwillbeheldhasnotyetbeenannounced.英語(yǔ)晚會(huì)將在哪里舉行,還沒(méi)有宣布。有時(shí)為避免句子頭重腳輕，常用形式主語(yǔ)it代替主語(yǔ)從句作形式主語(yǔ)放于句首，而把主語(yǔ)從句置于句末。主語(yǔ)從句后的謂語(yǔ)動(dòng)詞一般用單數(shù)形式。常用句型如下：

3、(1)It+be+名詞+that從句(2)It+be+形容詞+that從句(3)It+be+動(dòng)詞的過(guò)去分詞+that從句(4)It+不及物動(dòng)詞+that從句另注意在主語(yǔ)從句中用來(lái)表示驚奇、不相信、惋惜、理應(yīng)如此等語(yǔ)氣時(shí)，謂語(yǔ)動(dòng)詞要用虛擬語(yǔ)氣“(should)+do”，常用的句型有：Itisnecessary(important,natural,strange,etc.)thatItisapity(ashame,nowonder,etc.)thatItissuggested(requested,proposed,desired,etc.)that賓語(yǔ)從句名詞句用作賓語(yǔ)的從句叫賓語(yǔ)從句。引導(dǎo)賓語(yǔ)從

4、句的關(guān)聯(lián)詞與引導(dǎo)主語(yǔ)從句表語(yǔ)從句的關(guān)聯(lián)詞大致一樣,在句中可以作謂語(yǔ)動(dòng)詞或介詞及非謂語(yǔ)動(dòng)詞的賓語(yǔ)。由連接詞that引導(dǎo)的賓語(yǔ)從句由連接詞that引導(dǎo)賓語(yǔ)從句時(shí)，that在句中不擔(dān)任任何成分，在口語(yǔ)或非正式的文體中常被省去，但如從句是并列句時(shí)，第二個(gè)分句前的that不可省。例如：HehastoldmethathewillgotoShanghaitomorrow.他已經(jīng)告訴我他明天要去上海。Wemustneverthink(that)wearegoodineverythingwhileothersaregoodinnothing.我們決不能認(rèn)為自己什么都好,別人什么都不好。注意：在demand、or

5、der、suggest、decide、insist,desire,demand,request,command等表示要求、命令、建議、決定等意義的動(dòng)詞后，賓語(yǔ)從句常用(should)+動(dòng)詞原形”。例如：Iinsistthatshe(should)doherworkalone.我堅(jiān)持要她自己工作。Thecommanderorderedthattroops(should)setoffatonce.司令員命令部隊(duì)馬上出發(fā)。用who,whom,which,whose,what,when,where,why,how,whoever,whatever,whicheve等關(guān)聯(lián)詞引導(dǎo)的賓語(yǔ)從句相當(dāng)于特殊疑問(wèn)句

6、,應(yīng)注意句子語(yǔ)序要用陳述語(yǔ)序。例如：Iwanttoknowwhathehastoldyou.我想知道他告訴了你什么。Shealwaysthinksofhowshecanworkwell.她總是在想怎樣能把工作做好。Shewillgivewhoeverneedshelpawarmsupport.凡需要幫助的人,她都會(huì)給予熱情的支持。用whether或if引導(dǎo)的賓語(yǔ)從句，其主語(yǔ)和謂語(yǔ)的順序也不能顛倒，仍保持陳述句語(yǔ)序。此外,whether與if在作“是否”的意思講時(shí)在下列情況下一般只能用whether，不用if：a.引導(dǎo)主語(yǔ)從句并在句首時(shí)；b.引導(dǎo)表語(yǔ)從句時(shí)；c引導(dǎo)從句作介詞賓語(yǔ)時(shí)；d.從句后有o

7、rnot”時(shí)；e.后接動(dòng)詞不定式時(shí)。例如：Whetherthereislifeonthemoonisaninterestingquestion.月球上有沒(méi)有生命是個(gè)有趣的問(wèn)題。Everythingdependsonwhetherwehaveenoughmoney.一切要看我們是否有足夠的錢(qián)。4.注意賓語(yǔ)從句中的時(shí)態(tài)呼應(yīng)，當(dāng)主句動(dòng)詞是現(xiàn)在時(shí)，從句根據(jù)自身的句子情況，而使用不同時(shí)態(tài)。例如：hestudiesEnglisheveryday.（從句用一般現(xiàn)在時(shí)）hestudiedEnglishlastterm.（從句用一般過(guò)去時(shí)）Iknow（that）hewillstudyEnglishnextyea

8、r.（從句用一般將來(lái)時(shí)）hehasstudiedEnglishsince1998.（從句用現(xiàn)在完成時(shí)）當(dāng)主句動(dòng)詞是過(guò)去時(shí)態(tài)（could,would除外），從句則要用相應(yīng)的過(guò)去時(shí)態(tài)，如一般過(guò)去時(shí)，過(guò)去進(jìn)行時(shí)，過(guò)去將來(lái)時(shí)等；當(dāng)從句表示的是客觀真理，科學(xué)原理，自然現(xiàn)象，則從句仍用現(xiàn)在時(shí)態(tài)。例如：TheteachertoldusthatTomhadleftusforAmerica5.think,believe,imagine,suppose等等動(dòng)詞引起的否定性賓語(yǔ)從句中，要把上述主句中的動(dòng)詞變?yōu)榉穸ㄊ?。即將從句中的否定形式移到主句中。例如：Wedontthinkyouarehere.我們認(rèn)為你不在這。

9、Idontbelievehewilldoso.我相信他不會(huì)這樣做。表語(yǔ)從句在句中作表語(yǔ)的從句叫表語(yǔ)從句。引導(dǎo)表語(yǔ)從句的關(guān)聯(lián)詞與引導(dǎo)主語(yǔ)從句的關(guān)聯(lián)詞大致一樣，表語(yǔ)從句位于連系動(dòng)詞后，有時(shí)用asif引導(dǎo)。其基本結(jié)構(gòu)為：主語(yǔ)+系動(dòng)詞+that從句。例如：Thefactisthatwehavelostthegame.事實(shí)是我們已經(jīng)輸了這場(chǎng)比賽。Thatiswhyhedidntcometothemeeting.那就是他為什么不到會(huì)的原因。Itlooksasifitisgoingtorain.看上去天要下雨了。需要注意的，當(dāng)主語(yǔ)是reason時(shí)，表語(yǔ)從句要用that引導(dǎo)而不是because。例如：Ther

10、easonwhyhewaslatewasthathemissedthetrainbyoneminutethismorning同位語(yǔ)從句同位語(yǔ)從句說(shuō)明其前面的名詞的具體內(nèi)容。同位語(yǔ)從句通常由that引導(dǎo)，可用于同位語(yǔ)從句的名詞有advice、demand、doubt、fact、hope、idea、information、message、news、order、problem、promise、question、request、suggestion、truth、wish、word等。例如：Thenewsthatwewonthegameisexciting.我們贏得這場(chǎng)比賽的消息令人激動(dòng)。Ihaveno

11、ideawhenhewillcomebackhome.我不知道他什么時(shí)候回來(lái)。ThethoughtcametohimthatMaryhadprobablyfallenill.他想到可能瑪麗生病了。同位語(yǔ)從句和定語(yǔ)從句的區(qū)別：that作為關(guān)系代詞，可以引導(dǎo)定語(yǔ)從句，充當(dāng)句子成分，在從句中作賓語(yǔ)時(shí)可以省略；that引導(dǎo)同位語(yǔ)從句時(shí)，起連詞的作用，沒(méi)有實(shí)際意義，不充當(dāng)句子成分，一般不能省略。試比較下面兩個(gè)例句:Ihadnoideathatyouwerehere（that引導(dǎo)同位語(yǔ)從句，不能省略）Haveyougottheidea（that）thisbookgivesyouoflifeinancien

12、tGreece？（that引導(dǎo)定語(yǔ)從句，作賓語(yǔ)，可以省略）名詞性從句專(zhuān)項(xiàng)練習(xí)100題1.HissuccesswasbecauseofA.thatB.thefactwhichhehadbeenworkinghard.C.thefactthatD.thefactdontknowB.fromwhatcityshecomeD.whatcityshecomesfrom2.“IsMaryfromNewYorkCity”“IfromwhatcitydoesshecomefromC.whatcitydoesshecomefrommakesmistakesmustcorrectthem.A.WhatB.That

13、C.WhoeverD.WhateverThereasonwhyIdidntgotoShanghaiwasanewjob.A.becauseIgotB.becauseofgettingC.IgotItworriedherabitherhairwasturninggrey.B.thatC.ifD.thatIgotA.whileD.forC.hedidD.hehasdonesoHenrykilledthedog.IllaskhimwhydidhedothatB.hedidthat13.Maryissomeonemightrecognizeher.C.whicheverD.wheneverB.what

14、wrongwasD.whattroubleitisC.ofthatD.thatwhatC.hasnotknownD.havenotbeeB.didthewatchcostD.thewatchcostsC.afraidthatD.afraidforB.OwingtoafewminuteslateD.BeingafewminuteslateHaveyouseenHenrylatelyMybosswantstoknow.howheisgettingalongB.howishegettingalongC.whatheisgettingalongD.whatishegettingalongItisgen

15、erallyconsideredunwisetogiveachildheorshewants.howeverB.whateverHeaskedmewithme.whatisthetroubleC.whatwasthematterIamsurehesaidistrue.thatB.aboutthatWhenandwhyhecamehereyet.isnotknownB.arenotknownIwonderhowmuch.A.doesthewatchcostC.thewatchcostedA.afraidofB.afraidaboutisnoreasonfordismissingher.A.Bec

16、auseshewasafewminuteslateC.ThefactthatshewasafewminuteslateTheycametotheconclusionbyacomputer.A.thatnotallthingscanbedoneB.becauseofnotallthingsbedoneC.beingnotallthingscanbedoneD.becausenotallthingscanbedoneWhytheexplosionoccurredwasthelaboratoryattendanthadbeencareless.A.forB.becauseC.sinceD.thatI

17、dontdoubthellcome.A.thatB.ifC.whatD.whether18.“Whydidyougotothewrongclass,Mr.Wang”“Well,IforgetIwassupposedtogoto.”A.whichtheroomB.whichroomC.whatwastheroomD.whatroomwasitOutputisnowsixtimesitwasbeforeliberation.A.thatB.whichC.whatD.ofwhichMary:Helenisamerewasherwoman,yetshesnowbuyingabighouse.Carol

18、:Yes.Becauseshesalwayssaved.A.whatlittlesheearnsB.howlittlesheearnsC.forlittlesheearnsD.withlittlesheearnssurprisedmemostwassuchalittleboyofsevencouldplaytheviolinsowell.A.That.whatB.What.thatC.That.whichD.What.whichWegavehimhelpwecould.A.whichB.whatC.thatD.thisSheispleasedwithwhatyouhavegivenhimand

19、youhavetoldhim.A.thatB.whichC.allwhatD.allthatExcusemewouldyoupleasetellmeA.whenthesportsmeetistakenplaceB.whenisthesportsmeetgoingtobeheldC.whenisthesportsmeettobeginD.whenthesportsmeetistotakeplaceDoyouhappentoknowA.whatsizeshoeshewearsC.whatisthesizeofhisshoesB.howbigshoeshewearsD.whatnumbershoes

20、arehisA.howyouhaveobservedC.thatyouhaveobservedWheredoyouthinkA.hashegoneB.hashebeenDoyouknowhowwhatyouhaveobservedD.howthatyouhaveobservedhesgoneD.washeA.howmanypopulationsthereareintheworldB.howmuchpopulationthereisintheworldC.howmanythepopulationoftheworldisD.whatthepopulationoftheworldis29.Would

21、yougoandseeoutsideA.whattotakeplaceB.whatTomhashappenedC.whatishappeningD.whatthematterhadbeen30.ThesubjectofWhatisinterestingisthatIdonotevenknowhim.isA.whatB.interesting31.IthinkheisCharles.A.WhodoyouthinkheisC.Whomdoyouthinkheis32.HedidntknowwhichroomC.WhatisinterestingD.IB.DoyouthinkwhoheisD.Doy

22、outhinkwhoheisA.theylivedB.theylivedinC.didtheylive33.Thelittleboyatehismothergavehim.A.thatB.whichC.whateverD.didtheyliveinD.nomatterwhat34.Thecityisnolonger.A.whatitisB.thatitusedtobeC.whichitwas35.Myparentsusedtheyhadtogetanewcarforme.A.whichB.thatC.whatD.whatitusedtobeD.allwhat36.wegoswimmingeve

23、rydayusalotofgood.A.If.doB.That.doC.If.doesD.That.does37.wastheideathewifethoughtofA.What.thatB.That.whatC.How.whyD.Why.how38.didhetellhiswifehewishedtodoA.That.whatB.What.thatC.Where.whichD.Which.where39.Oneofthemenheldtheviewthebooksaidwasright.A.whatthatB.thatwhatC.thatwhichD.whichthat40.Ihavenoi

24、deaornothehasfinishedthework.A.ifB.that41.“Doyouknow“Hisfatherisadoctor.”A.whatishisfatherC.whathisfatherisC.whetherD.whichwhoishisfatherwhohisfatherisThisbookwillshowyoucanbeusedinothercontexts.IsthiswemeteachothertwoyearsagoD.placewhichA.placeB.placeinwhichC.where84.youhaveseenthingslikethesebefor

25、edoesntmatter.ItBobdrivesbadly.A.thinksthatB.isthoughtwhatC.thoughtthatD.isthoughtthatWeallknowthetruththereareair,waterandsunlighttherearelivingthings.A.whereB.whereverC.thatD.thatwhereverTheydiscussedA.ifB.thatSheasked.A.whatIwasdoingwhensherangmeupwhensherangmeupwhatIwasdoingMayIborrowtheringYouc

26、antakeyoulike.A.nomatterwhatB.whichHesaidthathewasfondof.A.whatbeautifulisC.beautifuliswhattheycouldsettletheproblemwithoutothershelp.C.whatD.whetherwhatwasIdoingwhensherangmeupwhendidsheringmeupwhatIwasdoingwhicheverD.thatwhatisbeautifulwhatitisbeautifulHeinsistedthatheingoodhealthandtoworkthere.A.

27、was,besentB.is,issentC.be,wassentD.be,sendDoyouknowheexpectswillgiveusatalkA.whoB.whomC.thatD.whoseItsuncertaintheexperimentisworthdoing.A.ifB.thatC.whetherD.howTheywouldhavefixedthetelephoneyesterdayitwasaholiday.A.exceptB.exceptforC.exceptthatD.butforistodogoodalloneslifeandneverdoanythingbad.A.Wh

28、icheverishardB.NomatterwhatishardWhatishardD.Allwhatishardtheboydidnttakemedicinemadehismotherangry.A.ThatB.WhatC.HowD.WhichAsthedaywasfine,Imadethesuggestionforawalkinthepark.A.wegoB.wewillgoC.shouldwegoD.thatwegowecantgetseemsbetterthanwehave.A.What,whatB.What,thatC.That,thatD.That,whatyoudontlike

29、himisnoneofmybusiness.A.WhatB.WhoC.ThatD.WhetherYoucantimaginewhentheyreceivedtheseniceChristmaspresents.A.howtheywereexcitedB.howexcitedtheywereC.howexcitedweretheyD.theywerehowexcitedwellgocampingtomorrowdependsontheweather.A.IfB.WhetherC.ThatD.Wherehereallymeansishedisagreeswithus.A.WhatthatB.Tha

30、twhatC.WhythatD.IfwhatisgoingtodothejobwillbedecidedbythePartycommittee.A.ThatB.WhyC.HowD.Whowellfinishtranslatingthebookdependsonthetime.A.WhenB.WhyC.WhatD.ThatA.whichB.whenC.thatD.where69.Theproblemiswillgotothemeeting.A.whyB.whenC.whatD.who70.Itlooks_itweregoingtorain.A.evenifB.asifC.eventhoughD.

31、like71.Thatis_helikestheplacesomuch.A.thatB.whatC.whyD.how72.ThatisLuXunoncelived.A.whatB.whereC.thatD.why73.Wethought_strangethatTomdidnotcomeyesterday.A.thatB.itC.thisD.what74.Thefact_shehadnotsaidanythingsurprisedallofus.A.whichB.whatC.thatD.how75.WhatImconsideringnowthemoneyweneed.A.isB.areC.wer

32、eD.was68.Threedayslater,wordcame76.Canyoutellme63.thehousewillbebuiltwillbediscussedattomorrows7.A.IfB.Wherehewontgothereiscleartoallofus.A.HowB.Whatyoucomeornotisuptoyou.A.WhatB.Ifmakesmistakesmustcorrectthem.A.WhoB.AnyoneteamwillwinthematchisaA.WhichB.ThatC.ThatD.WhatC.WhyD.ThisC.WhyD.Wh

33、etherC.WhoeverD.Anybodyfpublicconcern.C.IfD.Howmeeting.ourcountryhadsentupanotherman-madesatellite.A.whoisthatgentlemanthatgentlemaniswhowhothatgentlemanisD.whomisthatgentleman77.leavestheroomlastoughttoturnoffthelights.A.AnyoneB.ThepersonC.WhoeverD.Who78.Itiswellknownapersoneatscauseschangesinthebo

34、dy.A.thatwhat,when,andhowB.thatC.whatD.how79.Theenergyismakesthecellsabletodotheirwork.A.thatB.whichC.whatD.suchJackwassoontoldhedidwasnotnecessary.A.whyB.thatC.howD.whywhatWeshouldthinkcarefullyaboutMr.Needhamsaidatthemeeting.A.thatB.whatC.whichD.XCanyoupointouttworadiosarethebestA.whichB.whatC.tha

35、tD.whether83.Youwilleasilyknowvideorecorders（錄相機(jī)）arethesame.A.whatthoseB.thatofthoseC.thatallofD.whichofthose91.LastSundayhemadeapromise_A.ifB.that92.DoyouhaveanyideaA.whenMissSmithwillarriveC.howwillMissSmitharrive93.IhavealmostforgottenA.howMr.TaylorslikeC.whatMr.Taylorsfaceis94.Thetruevalueoflife

36、isnotin_A.howyouget.thatyougiveC.whatyouget.whatyougiveDoyouknowA.whatisthisusedforwhichthisisusedsurprisedmemostwasA.That.thatshespokeJapanesesowellC.What.thatshespokeJapanesesowellistodance.A.ThatinterestsMaryreallyWhatreallyinterestsMaryWeweregreatlyamusedby.A.whatyouhavetoldusC.whatyoutoldusThes

37、ecomputersaredifferentfromA.thatweexpectedC.whichwehaveexpectedB.whichyougotwhatyougiveD.whatdoyouget.whatdoyougiveB.whatthisisusedforD.thatthisisusedforB.What.howcouldshespeakJapanesesowellD.That.whyshecouldspeakJapanesesowellB.WhichreallyinterestsMary.WhatreallyinterestMaryB.whichyouhadtoldusthaty

38、outoldusB.whatweexpectedD.whatweexpectTomlikedtoeatwasdifferentfromA.That.thatyouhadexpectedC.That.whatyouhadexpectedB.What.thatyouhadexpectedD.What.whatyouhadexpectedA.IfB.WhetherC.WhatD.WhenIaskedherinEnglishshewas,andshetoldmeshewasanactress.A.who.thatB.who.XC.what.XD.how.thatShetookitforgrantedI

39、dbebackhomeanhourago.A.thatB.whetherC.ifD.whenWethinkitpossiblethelocalgovernmentwillbeabletosolvethehousingproblem.A.forB.thatC.whenD.howNowthereisadangerthegroundmayfallin（沉下）undertheheavytraffic.A.whetherB.ifC.XD.thatAtthattimeIhadnoideaIcouldhandittohimwithoutbeingseen.A.ifB.howC.whichD.thathowL

40、astSundayhepromisedtoday,buthehasntappearedyet.A.thathewouldcomeB.thathewillcomeC.hewillcometoseemeD.whetherhewouldcome_hewasfreehewouldtakemetoQingdao.C.thatifD.whetherwhenwillMissSmitharrivewhyhasntMissSmitharrivedwhatMr.TaylorsfaceislikewhichMr.Taylorsfaceislike,but.26-30.BCDCC1-5.CDCDB6-10.BABCD

41、11-15.ADCCA16-20.DABCA21-25.BBDDA31-35.ABCDC36-40.DABBC41-45.CCDDD46-50.ACBAA51-55.CCCAD56-60.ACBBA61-65DABCD66-70CACDB71-75CBBCA76-80CCCCD81-85BADBC86-90ABDBA91-95CABCB96-100CCCBDDABCD66-70CACDB71-75CBBCA76-80CCCCD81-85BADBC86-90ABDBA91-95CABCB96-100CCCBD1-5.CDCDB6-10.BABCD11-15.ADCCA16-20.DABCA21-

42、25.BBDDA26-30.BCDCC31-35.ABCDC36-40.DABBC41-45.CCDDD46-50.ACBAA51-55.CCCAD56-60.ACBBA61-65DABCD66-70CACDB71-75CBBCA76-80CCCCD81-85BADBC86-90ABDBA91-95CABCB96-100CCCBD1-5.CDCDB6-10.BABCD11-15.ADCCA16-20.DABCA21-25.BBDDA26-30.BCDCC31-35.ABCDC36-40.DABBC41-45.CCDDD46-50.ACBAA51-55.CCCAD56-60.ACBBA61-65

43、DABCD66-70CACDB71-75CBBCA76-80CCCCD81-85BADBC86-90ABDBA91-95CABCB96-100CCCBD1-5.CDCDB6-10.BABCD11-15.ADCCA16-20.DABCA21-25.BBDDA26-30.BCDCC31-35.ABCDC36-40.DABBC41-45.CCDDD46-50.ACBAA51-55.CCCAD56-60.ACBBA61-65DABCD66-70CACDB71-75CBBCA76-80CCCCD81-85BADBC86-90ABDBA91-95CABCB96-100CCCBD1-5.CDCDB6-10.

44、BABCD11-15.ADCCA16-20.DABCA21-25.BBDDA26-30.BCDCC31-35.ABCDC36-40.DABBC41-45.CCDDD46-50.ACBAA51-55.CCCAD56-60.ACBBA61-65DABCD66-70CACDB71-75CBBCA76-80CCCCD81-85BADBC86-90ABDBA91-95CABCB96-100CCCBD1-5.CDCDB6-10.BABCD11-15.ADCCA16-20.DABCA21-25.BBDDA26-30.BCDCC31-35.ABCDC36-40.DABBC41-45.CCDDD46-50.AC

45、BAA51-55.CCCAD56-60.ACBBA61-65DABCD66-70CACDB71-75CBBCA76-80CCCCD81-85BADBC86-90ABDBA91-95CABCB96-100CCCBD1-5.CDCDB6-10.BABCD11-15.ADCCA16-20.DABCA21-25.BBDDA26-30.BCDCC31-35.ABCDC36-40.DABBC41-45.CCDDD46-50.ACBAA51-55.CCCAD56-60.ACBBA61-65DABCD66-70CACDB71-75CBBCA76-80CCCCD81-85BADBC86-90ABDBA91-95CABCB96-100CCCBD1-5.CDCDB6-10.BABCD11-15.ADCCA16-20.DABCA21-25.BBDDA26-30.BCDCC31-35.ABCDC36-40.DABBC41-45.CCDDD46-50.ACBAA51-55.CCCAD56-60.ACBBA61-65DABCD66-70CACDB71-75CBBCA76-80CCCCD81-85BADBC86-90ABDBA91-95CABCB96-100CCCBD1-5.CDCDB6-10.BABCD11-15.ADCCA16-20.DABCA21-25.BBDDA26-30.BCDCC31-35.AB