数词精讲精练及答案

第六讲数词▲掌握分数、时间、日期的表达法。【复习要点】（一）基数词基数词用来表示数目，或者说表示数量的词叫基数词。最基本的基数词如下表所示。1one11eleven100ahundred2two12twelve20twenty1000athousand3three13thirteen30thirty1,000,000amillion4four14fourteen40forty10,000,000tenmillion5five15fifteen50fifty100,000,000ahundredmillion6six16sixteen60sixty1,000,000,000abillion7seven17seventeen70seventy8eight18eighteen80eighty9nine19nineteen90ninety10ten说明：13—19是由个位数加后缀-teen构成。注意其中13、15的拼写是thirteen和fifteeno20—90由个位数加后缀-ty构成，注意其中20—50的拼写分别是twenty,thirty,forty和fifty;80的拼写是eightyo其它非整十的两位数21—99是由整十位数加连字符“-"，再加个位数构成。如： 81eighty-oneo101—999的基数词先写百位数，后加and再写十位数和个位数。如：691sixhundredandninety-oneo1000以上的基数词先写千位数，后写百位数，再加and,最后写十位数和个位数。 一如：5893fivethousandeighthundredandninety-three。在基数词中只有表示“百”、“千，，的单位词，没有单独表示“万”、“亿”的单位词，而是用thousand（千）和million（百万）来表达，其换算关系为：1万=10thousand;1亿=100million;10彳乙二athousandmillion=abilliono多位数的读法：）1000以上的多位数，要使用计数间隔或逗号“，”。即从个位起，每隔三位加一个间隔或逗号。第一个间隔或逗号前是thousand（千），第二个间隔或逗号前是million（百万），第三个间隔或逗号前是athousandmillion或abillion（十亿）。2）每隔三位分段以后就都成了101—999o读的时候十位数（或个位数）的前面一般要加ando如：888,000,000读作：eighthundredandeighty-eightmilliono第六讲数词1（二）序数词表示顺序的词，叫序数词。序数词用来表示数词顺序。除特殊情况外，序数词一般都由相应的基数词加后缀-th构成。请见下表：第一到第十第十一到第十九第二十以上firsteleventhtwentiethsecondtwelfththirtieththirdthirteenthfortiethfourthfourteenthfiftiethfifthfifteenthsixtiethsixthsixteenthseventiethseventhseventeentheightietheightheighteenthninetiethninthnineteenthhundredthtenththousandth说明：.英语中表示第一、第二、第三的序数词属特殊形式，要注意它们的拼写。.表示“几十”的序数词通常是将基数词词尾y变成i再加上后缀-eth。.其余的二位数序数词是以相应的整十基数词加个位序数词。如：fifty-first（第五十^一）。.少数序数词拼法不规则，如：fifth（第五），eighth（第八），ninth（第九），twelfth（第十二）等。基数词变序数词口诀|:基变序，有规律，词尾要加th.一二三，特殊记，（firstsecondthird）八去t,九去e,ve要用f替.ty变作tie,再加th莫忘记.若遇几十几，只变个位就可以.注意：序数词可缩写为阿拉伯数字加序数词最后两个字母。例如：第一：（the）first=1st 第二：（the）second=2nd第三：（the）third=3rd 第五：（the）fifth=5th第九十七：（the）ninety-seventh=97th第一百零一：（the）onehundred（and）first=101st三.数词的应用..表编号.结构:名词（首字母要大写）+基数词=the+序数词+名词LessonOne=thefirstlesson,Page32,BusNo.12※注：有些编号，一般仅用第一种表达法。Room101.序数词前一般加定冠词the但序数词前与不定冠词a/an连用时，表示“又一，再一”e.g.1）You,vedoneitthreetimes.Whynottryfourthtime?A.aB.anC.theD./2）Bothofthetworulersarebroken.Iwanttobuyaone.第六讲数词2

A.threeB.thirdC.forthD./A.threeB.thirdC.forthD./.数词前加every/示每……/每隔…… 一everytendays=everyninthday每十天（每隔九天）注:every+基数词+复数名词=every+（序数词-1）+单数名词.基数词的复数形式表示年代和年龄1）表示年代:in+the+年份的复数在几世纪几十年代.如：inthe1870s或18705s2）表年龄:inone5s+整十的复数表示在某人几十岁时。有时在物主代词后面可加上形容词early或late使其含义更确切些。如：Theyoungmanisatmostinhisearlythirties.Theheroofthestoryisanartistinhis.A.thirtiethB.thirty C.thirty,s D.thirties.hundred/thousand/million/billion/dozen.若hundred/thousand/million/billion前有基数词时，其后不加s,也不加of.若没有时，既加s也要带of.EveryyearvisitorscometoChina.Therearetwostudentsinourschool.A.thousandB.thousandsC.thousandsofD.thousandof.若其前有afew、many＞several修饰时，通常用复数，后接of..若名词前有the修饰时，用单数，后接ofTwothestudentsinourschoolarefromthecountryside.A.hundredB.hundredofC.hundredsofD.hundreds.几个半的表达法：基数词+and+ahalf+名词复数=基数词+名词（单数/复数）+and+ahalftwoandahalfhours=twohoursandahalfe.g.1.DavidhelpshismotherwiththehouseworkeverySaturdayforabout.A.oneandhalfhours B.ahalfandanhourC.anhourandhalf D.oneandahalfhours2.Shehasbeenskatingfor.A.threeandahalfyearsB.threeandhalfayearC．threeandahalfyear D．threeyearsandhalf7.时刻表达法：1）整点：基数词+o,clock2）几点几分：.直接读法：先读小时，后读分钟3:25threetwenty-five.间接读法：a）＜30分钟.分钟+past+小时 3：25——twenty-fivepastthreeb）＞30分钟.（60-分钟）+to+（小时数+1）3:55 fivetofourc）30分钟=half15分钟二aquarter45分钟=threequarters3:30halfpastthree3:15——aquarterpastthree 3:45——aquartertofour第六讲数词3.日期表达法：1)结构:.月日，年(日用序数词，年用基数词)※注:年份的读法：先读前两位数，再读后两位数.读日时要加the.1900nineteenhundred 1807——eightandseven(eightoseven)2008twothousandeight2007年3月21日.Marchthetwenty-first,twothousandandseven..日月年(the+序数词+of+月，年)2007年3月21日thetwenty-firstofMarch,twothousandandseven..分数的表达法：.结构:a).分子用基数词，分母用序数词.b).当分子大于1时,分母加复数.3/4threefourths(three-fourths).注意:※※1).分数词的几种特殊形式.1/3—onethird=athird1/4—onefourth=aquarter1/2—onesecond=ahalf3/4—threefourths=threequarters.百分数表达法在数词后加percent。例如：15%读作：fifteenpercent；60%读作：sixtypercent2)注：分数、百分数与主谓一致分数、百分数的考查往往和主谓一致相联系。当分数、百分数修饰可数名词的复数时，谓语动词用复数形式；当分数、百分数修饰不可数名词时，谓语动词用单数形式。如：ThreefourthsofthestudentsinmyclassareinterestedinEnglish.我们班四分之三的学生对英语感兴趣。.Twothirdsofthewaterontheearthiswater.球上三分之二的水是海水。.Aboutoftheseroomsempty.A.twothird,areB.twothirds,areC.twothirds,isD.twothird,is11带有数词的名词作定语的表达：aseven-year-oldboy，ahundred-meterracee.g.——Iunderstandyouhavearelativevisitingyou?——Yes,mygrandmother.A.ninety-year-oldsB.ninety-old-yearC.ninety-years-oldD.ninety-year-old..小数表达法小数点前的整数按基数词的规则表示，小数点写作point,小数后的数字应按其数字直接表示出来。如：18.38可写成：eighteenpointthreeeight。注意：小数在句中常作定语，尤其在比较方式状语从句中被使用。如：Thisstoneis3.5timesheavierthanthatone..表示倍数.表示“几倍大小(长短；数量)”，由“倍数+thesize(length,amount...)”结构组成。如：Theearthisforth-ninetimesthesizeofthemoon..表示“……比……大几倍”，由“倍数+形容词(副词)比较级+than+被比较部分”结构组成。如：Thisboxisthreetimesbiggerthanthatone..表示“……是……倍”，由“倍数+as+形容词+as+被比较部分”结构组成。如：Ourfactoryistwiceasbigastheirs.第六讲数词414.表示约数1)“多于”用morethan或over。例如：Thestreetisover(morethan)500metreslong.这条街有500多米长。“小于"用lessthan。例如：Threearelessthan30peopleintheclassroom.教室里不到三十人。3)"或...以上”用ormore。例如：Thebuildingcanhold5000peopleormore.那座建筑物可容纳5000人或5000人以上。4)“或…以下”用orless。例如：Wecanfinishtheworkintwoweeksorless.我们可以在两周内或不到两周完成这件工作。5)“大约”用about,around,nearly等。例如：Theboxweighsabout50pounds.这箱子重约50镑。6)“左右”用orso.如：Inthepasttenyearsorso,theyhavechangedalot.在过去的十年里，他们改变了许多数词专项练习.用英语写出数词及数词词组并填空。Therearedaysinaweek.Therearemonthsinayear.ThereareusuallyordaysinonemonthexceptAndthereareusuallyordaysinoneyear.Therearesecondsinoneminuteandhoursinoneday.Thereareyearsinacentury(世纪).NewYear'sDayisdayofeachyear.Decemberismonthoftheyear.SpringFestivalisusuallyinormonthoftheyear.9)ofMayisLabourDay(劳动节).10)isChildren'sDay.11)TheChineseCommunistPartywasfoundedon.12)isInternationalWomen'sDay(国际妇女节).13)isArmyDay.ThePeople'sRepublicofChinawasfoundedon.ChristmasDayisoneachyear.第六讲数词5Saturdayisdayoftheweek.Septemberismonthoftheyear.Thereareseasonsinayear,andautumnisseasonoftheyear.What'sthedatetoday?It's.Whattimeisit?It,s."M”isletterintheword“autumn”.Twenty-sixandfourteenis（are）.Thirty-oneandnineteenare.Forty-twoandforty-eightis.II.完成下列句子。Tomlefthome（20年前）.You'vebeenwatchingTVfor（半小时）.WewenttothePalaceMuseumby（52路公共汽车）.（1975年（1975年3月4日）.Totellyouthetruth,we'vebeenthere（仅仅一次）.Ittook（两万多）workers（14年）tofinishthebuilding.Hebought（6片面包、一盘鱼、一杯牛奶和两杯茶）.Thatboxisabout（3米长、2米宽）.Thereisabigstone（前方大约40米处）.It's（9点1刻）.Hestudiesat（第35中学）.12）（三分之一的医生）inthishospitalareolddoctors.Ittookus（3亥U钟）togetthere.14）（第100位）studentisthetallest.Nowlet'sturnto（43页）.m选择题—Whatwouldyoulike,sir?.A.Twopop B.Twobottlespop第六讲数词6

C.Twobottlesofpop D.TwobottleofpopgirlstookpartintheHappyGirlCompetitionbutonlyfewofthemsucceeded.A.Millionof B.ManymillionofC.Onemillionof D.MillionsofNearlyoftheearthcoveredbysea.A.threefourth;is B.threefourths;isC.threefourth;are D.threefourths;are4.IgotabeautifulbikeonA．4.IgotabeautifulbikeonA．fifteenthC．C．myfifteenD．myfifteenth—DoyouknowtheboywhoissittingnexttoPeter?—Yes.HeisPeter'sfriend.Theyarecelebratinghisbirthday.A. ninth B.ninethC.nineth D.ninthIgotagoodpresentonmybirthday.A．nine B．ninthC．thenine D．theninth—HaveyouseentheCCTVnewsonTV?—Yes,childrenhadagoodfestivalontheChildren'sDay.A．millionsof;sixtyB．tenmillions;sixtiethC．millionsof;sixtiethtreeshavebeenplantednearhere,sotheairisveryfresh.A．Twohundreds B．HundredofC．Hundredsof D．Hundredsofthelandinthatdistrictcoveredwithtreesandgrass.A.Twofifths；is B.Twofifth；areC.Twofifth；is D.Twofifths；areAlthoughIfailedfourtimes,myfatherencouragedmetohaveatry.A．third B．fourth C．fifth—Hereweare.Wheredoesyourcousinlive,Tom?—Oh,helivesonthefloor.A．two B．twiceC．second D．twosThenumberofthestudentsinourschoolisaboutnine.ofthemareboys.A．hundred;Twothirds B．hundred;TwothirdC．hundreds;Twothirds D．hundreds;TwothirdTheWorldTableTennisChampionshipbeganthemorningofMay25,2010Moscow,Russia.A.Fifty;in;inB.Fiftieth;on;inC.Fiftieth;in;onD.Fifty;on;inJohnis180centimeterstall,andhisdaughteris90.Soheistwiceshe.A．sotallasB．astallasC．muchtallerthanD．lessthanIthinkofthematerialsIlistenedtoatthebeginningoftheexameasy.第六讲数词7A.threefourths;isB.thirdfour;areC.threefourths;areD.threefourth;are—Therearesixtystudentsinourclass.Andofusareboys.-Wow!Fortygirlsinyourclass!A.onefourth B.onethirdC.threequarters D.twothirds—Therearesixtystudentsinourclass.Andofusareboys.—Wow!Youhavetwentygirls!A．onefourth B．onethird C．twofifths D．twothirdsofthestudentsinourclassmoneytothedisabledpeoplethesedays.A．Twothird;haveraisedB．Twothirds;hasraisedC．Twothree;haveraised D．Twothirds;haveraised—Goodnews!Billwonmedalinthelongjumpjustnow.—Really?That'shisoneatoursportsmeeting.A．a;four B．an;fourth C．a;fourth—Now,everybody,pleaseturntoPageandlookatthepicture.A．Fifth;five B．Five;fifthC．Fifth;fifth D．Five;five—We'llbebackforourschool'sanniversaryceremony.—Isee.Thatmeansyou'llhaveagettogetherwithyourclassmatesin years.A.fifteen;seven B.fifteenth;sevenC．fifteen;seventh D．fifteenth;seventhThefarmerkeepscowsonhisfarm.A．hundred B．hundredof C．hundreds D．hundredsofFather'sDayisonSundayofJune.A．three B．third C．thethirdTodayismymother'sbirthday.I'llbuyheragift.A．fourteen B．fourteenthC．forty D．fortiethAboutoftheworkersinthefactorywereborninthe.Atwothirds;1970 Btwothirds;1970sCtwothird;1970 Dtwothird;1970s.Morethantwoyearsago,peopleknewlittleabouttheuniverse.A.thousandsB.thousandC.thousandofD.thousandsof—WhenisMr.WanggoingtoJapan?—On.AJuneBJunefourthCtheyear2010DJune,2010—Thereisawrongwordinline.—Where?—Intheline.A.two;twoB.two;secondC.second;twoD.second;second29.You'llhaveholid