初中英语数词详解及专项练习

基数词&序数词一、基数词1-10（one,two,three,four,five,six,seven,eight,nine,te）n11-19（eleven,twelve,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen）两位数（非整数），十位数和个位数之间用连字符“-”。（21twenty-one； 76seventy-six）两位数（整数），以ty结尾；（40forty；90ninety）三位数，在百位数和十位数之间用 and连接。101ahundredandone； 320threehundredandtwenty； 648sixhundredandforty-eight百（hundred）,千（thousand）,百万（million）,千万（billion）表示确切的百、千、百万时，不能用其复数形式；（400fourhundred，hundred不加s）表示成百、成千时，用其复数形式；（成百hundredsof;成千thousandsof）表示“人的不确切岁数”，用几十的复数形式；Hebecameaprofessorinhisthirties.（他在三十多岁成为教授。）表示年代时，用几十的复数形式；Itwasin1960s.（那是在20世纪60年代。）二、序数词1、英语的序数词基本变法：1-19：一般在基数词后加 th特殊情况： onefirst;twosecond;threethird;eighteighth;nineninth;-ve结尾的改ve为f加th；（如 fivefifth； twelvetwelfth）（2）两位数（整数），改y为-ie,加th; （如twenty-twentieth; thirty-thirtieth）（3）两位数 /多位数（非整数），仅个位数部分用序数词。（如：thirty-sixth, fiftythird, onehundredandtwenty-first）2.缩写形式：阿拉伯数字 +序数词末尾两个字母（只有1st,2nd,3rd为特殊形式，其他都是阿拉伯数字 +th）first1st； second2nd; twentieth20th;twenty-third23rd三、基数词 /序数词用法辨别基数词也可以表示顺序，要将基数词放在名词之后。thefirstLessonLessonOne/thefifthPage5（1）序数词前面加 the时,表示顺序,ThisisthefourthtimeIcomehere.这是我第四次来这儿。（2）加a/an时表示“再一、又一 ”We’vetrieditthreetimes.Mustwetryitafourthtime?我们已经试过三遍了，还必须再试一次（第四次）吗四、时间的数词表示法.表示时刻(1)整点用“o'clock”； (5:00读作fiveo'clock或巾ve)(2)几点过几分，分钟+past+小时；(fivepastseven七点过五分； aquarterpasteight/l点过——亥U； halfpasteight/l点半)(3)几点差几分，分钟+to+小时；(tentoeight/l点差十分； aquartertotwelve十二点差——亥U)(4)直接法：小时十分钟；(6:31读作sixthirty-one; 10:26tentwenty-six).表示日期，用the加序数词表示，或用缩写形式12月1日：Dec.1st或thefirstofDecember；2002年11月8日:Nov.8th,2002..表示年份，用基数词表示2002读作twentythousandandtwo； 1976读作nineteenseventy-six.表示年代，用the+年代+s/s在20世纪30年代：inthe1930s或inthe1930s.表示世纪，用the+序数词+century,或者the+整百+S/s20世纪：the20thcentury或the1900's/the1900s五、分数/小数/百分数表示法1、分数表示法：基数词作分子，序数词作分母；分子是“1”时，序数词用单数；除此之外，序数词用复数1/3:onethird/athird；1/2：ahalf； 1/4：onequarter；3/4：threefourths/threequarters; 1；:oneandahalf.华”的表达：——半——ahalf; 半/4时-halfanhour； 1.5小时-oneandahalfhours或onehourandahalf..当分数后接名词时，如果分数值大于 1,名词用复数；小于1,名词用单数。oneandahalfhours——个半小时； twoandthreefourthsmeters 2.75米)小数：小数点左边合起来读，小数点右边的数字分开读，小数点读作 point10.25 tenpointtwofive/ 1.03onepointothree4)10.25 tenpointtwofive/ 1.03onepointothree4)百分数：用基数词+percent表示50%fiftypercent; 3%——threepercent专项练习题Excuseme,howdoesthisnumber20,135read?Itreads .twentythousandsonehundredandthirty-five. C.twentythousandonehundredandthirtyfive.twentythousandonehundredandthirty-five. D.twentythousands,onehundredandthirty-five.Eachyear, fishedarekilledbythepollutedwaterandmanypeoplearemadesickbythepollutedair.A.millionsof B.millionof C.twomillionsof D.twomillionsDuringtheseven-dayMayDayholiday familieswentsightseeing.A.thousand B.thousands C.thousandsandthousandsD.thousandsofThebuildinghas floors.Theyliveonthe Thebuildinghas floors.Theyliveonthe floor.A.ninth,last B.nine,nine C.nine,ninthThebeautifulskirtsareonshowintheshop.Janelikes .A.theninth B.thenineth C.nineDecemberisthe monthoftheyear.A.twelve B.twelveth C.twelvitthD.nine,tenthD.ninthD.twelfthIthinkthatthecentury世纪）willbringusmorehopes.A.twenty-one B.twentiety-firstNowletmehave .A.thethirdtry B.athirdtryMysisterisastudentof .A.theFirstClass B.ClassOneShakespearewasbornin .A.1660s B.1660’sA.twenty-one B.twentiety-firstNowletmehave .A.thethirdtry B.athirdtryMysisterisastudentof .A.theFirstClass B.ClassOneShakespearewasbornin .A.1660s B.1660’sHebecameasuperstar .A.Inhisthirty B.InhisthirtiesC.twenty-firstthirdtryC.OneClassC.The1660C.AthisthirtyD.twentieth-onethisthirdtryD.ClassFirstD.The1660’sD.Athisthirties ofthestudentsplayQQfarmgamesontheInternet.A.70percentof B.70percent C.70percentofTheOlympicGamesareheld .A.EveryfouryearsB.Everyfouryear C.Everyfourthyears ofthestudentsplayQQfarmgamesontheInternet.A.70percentof B.70percent C.70percentofTheOlympicGamesareheld .A.EveryfouryearsB.Everyfouryear C.EveryfourthyearsD.70percentsD.Everyfour-yearsNowadays ofbusinesslettersarewritteninEnglish.TwothirdTwothirdsTwothreeSecondthreeTwothirdTwothirdsTwothreeSecondthree综合练习综合练习、单项选择题ThegovernmentofChongqingisbuilding cheapandgoodhousesforthepeople.A.Thousand B.Thousands C.Thousandof D.ThousandsofTheteachersaidthat oftheboyswouldtakepartinthetalentshow.A.Threefive B.Threefives C.Thirdsfifths D.ThreefifthsIgotabeautifulbikeon birthday.Ilikeitverymuch.A.Fifteenth B.Fifteen C.Myfifteen D.MyfifteenthThisisMr.White’s visittoBeijing.Hehasbeentheretwicebefore.A.Two B.Second C.Three D.ThirdNow,everybody,pleaseturntoPage andlookatthe picture.A.Fifth;five B.Five;fifth C.Fifth;fifth D.Five;five peoplewenttotheconcertwhichwasheldinPeople ’sSquare thenightofA.Thousandof;inB.Thousand;on C.Manythousand;inD.Thousandsof;onIthink ofthematerialsIlistenedtoattheverybeginningoftheexam easy.A.Threefourths;isB.Thirdfour;areC.Threefourth;areD.Threefourth;areAbout oftheworkersinthefactorywereborninthe .A.Two-thirds;1970 B.Two-thirds;1970sC.Two-third;1970 D.Two-third;1970s Bob,canyouwritethenumbersevenhundredandeightythousandandthirty-two? Yes.Itis .A.78032 B.7832 C.7032 D.780032Nine poundsaweek?A.hundredof B.hundredsof C.hundreds D.HundredThe monthoftheyearisFebruary.A.one B.first C.two D.Second Comeandseemein . Withpleasure.That’swhatI’mexpecting.A.TwoorthreedaysB.TwoorthreedaystimeA.TwoorthreedaysB.TwoorthreedaystimeC.Twoorthreedays’time二、阅读理解Somepeoplehaveaverypoorsenseofdirection.Unlucky,Iamoneofthem.IhavevisitedaplacemanytimesbutImaystillgetlosttherethenexttime.WhenIwasalittlegirl,Ineverdaredaskstrangerstheway.AndsoIusedtowalkroundincircleandhopethatbychanceIwouldgettotheplaceIwasgoingto.Now,Iamnolongertooshytoaskpeoplefordirections,butIoftenreceivehelplessorevenwronginformation.SoItrytoavoidgivingpeoplewrongdirections.Ifanyoneasksmethewaysomewhere,Iwouldsay,"sorry,Iamastrangerhere."OnceonmywaytoworkIwasstoppedbyaman.HeaskedmeifIcouldtellhimthewaytotheFriendshipBuilding.Igavehimmyusualreply.ButjustasIwalkedononlyafewsteps.Irealizedthathehadaskedthewaytomyofficebuilding.However,Ihadnotimetoturnbackandlookforhim.IwasrushingtomeetwithsomeoneatmyofficeandIdidn'twanttokeephimwaiting.WhenIjustgottomyoffice,thesecretaryshowedinthemanwhohadaskedmefordirections.ImaginehowembarrassedIwasandhowsurprisedhewaswhenwesaweachotheratthefirstsight!Thewriteralwaysrefusestogivepeopledirectionsbecause.A.she'sastrangetothecity B.shedoesn'tknowthepeopleC.shehasnotimetohelpothersD.she'safraidofgivingwrongdirections.Amanstoppedthewriteronthewayto.A.sellhersomething B.askforthetimeC.makefriendswithherD.askforthedirections.TheFriendshipBuildingistheplacewherethewriterA.livesB.studiesC.worksD.teachesTheword"embarrassed"inthelastparagraphmeans" ".A.尴尬B.困惑 C.激动 D.拮据WhichofthefollowingisTRUEaccordingtothepassage?ThewriteristooshytogiveothersdirectionsThewriterhasaverypoorsenseofdirectionsThewriternevergotlostwhenshewasyoung.Themanwasquitenervouswhenhesawthewriter.三、完型填空Manyparentswanttheirchildrentobefamousoneday.Butdochildrenhavethesame__1_?Anew__A—Hi,Ke'aiisonatBeijingChildren'sArtTheatre.IttellsthestoryofaboycalledKe'ai.Hisparentswouldlikehimtobecomeapainterora_3 oneday.Theyteachhimto_4__andtoplaytheviolin,butKe'aidoes