基数词序数词

一、知识归纳①基数词变序数词的规律：口诀：基变序，有规律。一、二、三、特殊记，词尾字母t,d,d.(如：first,second,third)。八减t,九去e,（如：eighth,ninth）,f来把ve替。（如：twelfth）.单词ty作结尾，ty变成tie(如：twentieth).若是碰到几十几，只变个位就可以。（如：twenty-first）②1-100的序数词：1st--first；2nd--second；3rd--third；4th--fourth；5th--fifth；6th--sixth；7th--seventh；8th--eighth；9th--ninth；10th--tenth；11th--eleventh；12th--twelfth；20th--twentieth；21st--twenty-first；22nd--twenty-second；29th--twenty-ninth；30th--thirtieth；31st--thirty-first；40th--fortieth；50th--fiftieth；60th--sixtieth；70th--seventieth；80th--eightieth；90th--ninetieth；100th--hundredth基数词序数词练习题I.Choosethebestanswer()1.Pleaseturnto______.A.Page11B.the11stpageC.page11D.pagethe11th()2.Atnightwecansee______starsinthesky.A.thousandsandthousandsofB.thousandandthousandsofC.athousandandthousandsD.thousandandthousand()3.Therearesome_____inourclassroom.A.hundredofbooksB.thehundredsofbooksC.hundredsofbooksD.hundredofbook()4.Ihavebeentothevillage________.A.ahundredtimeB.hundredtimesC.hundredsoftimesD.hundredoftimes()5.Thereare____studentsinourschool.A.four—hundredandforty—fiveB.fourhundredandforty—fiveC.fourhundredsandforty—fiveD.fourhundredandfortyfive()6.Theteachertoldmetogoover_____lessons.A.thirstthreeB.thethreefirstC.threethefirstD.thefirstthree()7.Mayis____ofayear.A.thefifthmonthsB.thefifthmonthC.thefivemonthsD.thefivemonth()8.Welivein______.A.thetwenty-firstcenturyB.thecenturytwenty-oneC.centurytwenty-oneD.thecenturytwenty-first()9.Hesaidhewasgoingtobefreein_______.A.oneandahalfhourB.onehourandhalfC.oneandhalfhoursD.anhourandahalf()10.---HowmanyEnglishbooksarethereonthetable?---Thereisonly_____Englishbookonit.A.aB.anC.oneD.the()11.MrSmithstayedin_____lastnight.A.Room403B.theRoom403C.the403roomD.403theroom()12.Theroadis_________.A.twothousandandfivehundredmetreslongB.twothousandsmetreslongC.longonethousandfivehundredmetreD.athousandandfivehundredsmetreslong()13.Hejoinedthearmyon______ofMay1980.A.1stB.the1C.firstD.thefirst()14.IsSundaythe____dayoftheweek?A.aB.oneC.onceD.first()15.Marchthe_____isWomen’sDay.A.eighthB.ninthC.tenthD.eight()16.Septemberisthe_____monthoftheyear.A.ninethB.ninthC.nineD.thetwelveth()17.Decemberthe____isChristmas.A.twenty-fiveB.twenty-fifthC.twentieth-fiveD.twenty-five()18.AnotherwayofsayingLesson12is__________.A.Lessonten-twoB.LessonTen-secondC.theTwelfthLessonD.TwelfthlessonII.Completethesentencesaccordingtothenumerals:(用past或to的句型)1.Whattimeisit?(8:30)It’s___________________________.2.Whatisit?(9:15)It’s___________________________.3.Whattimeisit?(7;45)It’s___________________________.4.Whatwasthedate?(1893年1月226日)It____________________________________________________________________.III.TranslatethefollowingintoEnglish:1.电话号码8485308_____________________2.第六十四中学___________________3.成千上万的儿童_____________________4.两个月半_______________________5.45路公共汽车______________________6.三分之一_______________________7.五分之四________________________8.第501房间_____________________9.第二层_________________________10.第三次______________________11.第五册_______________________12.两周半____________________13.他每天早上总是第一个到校。_____________________________________________14.第三天早上玛丽没有迟到。_______________________________________________15.这本书我昨晚读了20页。______________________________________________.16.最近的医院离他们学校约4—5公里。____________________________________17.在二十世纪三十年代___________________18.中华路21号__________________参考答案：I.选择题1—5.AACCB6—10.DBADC11—15.DADDA16—18.BBCII.完成句子：1.It’shalfpasteight.2.It’saquarterpastnine.3.It’saquartertoeight.4.ItwasJanuarytwenty-sixtheighteenninety-three.III.翻译短语和句子：1.Telephonenumber/Tel.No.eightfoureightfivethreeoeight2.No.Sixty-fourMiddleSchool3.thousandsofchildren4.halfandtwomonths/twomonthsandahalf5.No.45bus/Bus456.onethird7.fourfifths8.Room5019.thesecondfloor10.thethirdtime11.BookV12.halfandtwoweeks/twoweeksandahalf13.Heisalwaysthefirsttogettoschooleverymorning.14.ThethirddayMarywasn’tlate15.Ireadsopagesofthebookyesterdayevening.16.Thenearesthospitalisaboutfourtofivekilometersfromtheirschool.17.inthe1930s18.2ZhonghuaRoad一、基数词下面把100以内的基数词分为四类。1、第一类：one一two二three三four四five五six六seven七eight八nine九ten十eleven十一twelve十二这一类共计十二个单词，在结构上与其他的基数词相比较是特殊的，就象不规则的动词一样，要求逐个的硬背下来，这对学好其他的基数词和序数词都是及其重要的。2、第二类：thirteen十三fourteen十四fifteen十五sixteen十六seventeen十七eighteen十八nineteen十九这一类基数词共有七个。它们在结构上有两个特点：一是在发音方面都有两个重音；二是在拼法上都有后缀－teen。除了thirteen和fifteen之外，都是纯粹地在另一个基数词的后面加上后缀－teen。但要注意eighteen的拼法，eight本身有t字母，因此只加－een。3、第三类：twenty二十thirty三十forty四十fifty五十sixty六十seventy七十eighty八十ninety九十这类基数词共有八个。都是十位的整数，均以后缀－ty结尾。其中sixty、seventy、eighty、ninety基本上是在相应的基数词后面加上后缀－ty。但要注意eighty的拼法，eight本身有t字母，因此只加－y。4、第四类：这一类和很简单，可以看成是一种合成词。其结构方式是：用十位整数加上个位整数，其间用连字符号“－”连接，表示“几十几”。这类基数词的变化都是规则的。如：twenty-one二十一forty-six四十六seventy-eight七十八ninety-five九十五二、序数词下面把1－99的序数词也分为四个类。1、第一类first(1st)第一second(2nd)第二third(3rd)第三（在括号里的是缩写形式，均在阿拉伯数字后面加上相应序数词的最后两个字母构成，以下各类与此相同。）这类序数词只有三个，在整个序数词里面是特殊的，就和第一类基数词一样，需要逐个地硬记下来。2、第二类：fourth(4th)第四fifth(5th)第五sixth(6th)第六seventh(7th)第七eighth(8th)第八ninth(9th)第九tenth(10th)第十eleventh(11th)第十一twelfth(12th)第十二thirteenth(13th)第十三fourteenth(14th)第十四fifteenth(15th)第十五sixteenth(16th)第十六sev