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数词考点一：基数词和序数词的写法【经典练习】A．单项选择。1.—Howlongisthenewbridge?Doyouknow,Jack?—Yes.It’sabout_______long.A.onethousandonehundredandeightmetresB.onethousandandonehundredfiftymetresC.twothousandsonehundredfortymetresD.twothousandsseventyandthreemetres2.Thereare______daysinayearanddaysinaweek.A.threehundredandsixty-five;seventhB.threehundredsixtyfive;sevenC.threehundredsixty-five;seventhD.threehundredandsixty-five;sevenB．根据句意，用括号中所给单词的正确形式填空。3.Decemberisthe_______(twelve)monthoftheyear.4.Ourclassroomisonthe_______(five)floorofthegreenbuilding.5.WhatpresentshallwegiveGrandmaforher_________(ninety)birthday?6.His_______(one)nameisMike.ButIdon’tknowhisfamilyname.7.Thoughhehadfailedtwice,hewantedtotrya_______(three)time.twelfthfifthninetiethfirstthird【考点点拨】◆基数词个位与十位之间要加连字符，百位与十位（若无十位则与个位）之间常加and。◆序数词first,second,third为特殊形式；一般规律是在基数词词尾加-th，但fifth,eighth,ninth,twelfth应特别注意；整十的序数词要把y变为ie再加-th，如：twenty→twentieth,thirty→thirtieth等；超过20的非整十数，需将个位变为序数词。考点二：分数表达法【经典练习】单项选择。1.Wehavedone______ofthework.We’ll2.finishitthisweek.A.onethreeB.firstthirdC.onethirdD.firstthree2.______ofthesnowintheyard______cleanedupthismorning.A.Twofifths;wasB.Twofifth;wereC.Twofifth;wasD.Twofifths;were3.About_______ofthebooksinourschoollibraryarewritteninChinese.A.fourfifthB.fourfifthsC.fourthfifthsD.fourthsfifth4.—Whichisthesmallestnumberofthefour?—_______.A.OnefifthB.AhalfC.AquarterD.Onethird5.—Doyouknowwhattwothirdsandfivesixthsis?—Letmesee…it’s_______.A.oneandonesixthB.oneandonethirdC.oneandahalfD.oneandthreefifths【考点点拨】英语中表示分数时，分子用基数词，分母用序数词；分子大于1时，分母要在序数词后加-s分数作主语时，谓语动词的单复数取决于分数后所跟的名词的数。考点三：hundred,thousand,million,billion的用法【经典练习】单项选择。1.Itissaidthatmorethan______peopletookpartinthesportsmeeting.A.twohundredsB.twohundreds’C.twohundred’sD.twohundred2.Thecomputerwascheap.Ispentonlytwo______yuanonit.A.thousandsB.thousandC.thousandsofD.thousandof3.Theoldmanleftanestate(遗产)of______whenhedied.A.twomilliondollarB.twomillionsdollarsC.twomilliondollarsD.twomillionsdollar4.—Whatdoyouthinkoftheearthquake?—It’sterrible.______peoplelosttheirlivesinit.A.ThreethousandsB.ThousandofC.ThreethousandsofD.Thousandsof【考点点拨】当具体数字后直接跟hundred,thousand,million,billion时，这些词后不加-s；当hundred,thousand,million,billion等词构成of短语，表约略数目时，这些词后应加-s，并且它们的前面不能再加具体数字。考点四：带基数词的复合形容词的用法【经典练习】单项选择。1.—Howfarisitfromthelibrarytothetheatre?—It’sabout_____.A.10minuteswalkB.10minute’swalkC.10-minuteswalkD.10minutes’walk2.—HowlongcanyoustayinBeijing?—Ihavea_____holiday,soIplantostayhereformorethanonemonth.A.twomonthB.twomonth’sC.two-monthD.two-months3.—Howoldisyourson,MrWhite?—Heisonlyabout_____.Helookslikeanangel(天使).A.eight-months-oldB.eight-montholdC.eightmontholdD.eightmonthsold4.—It’ssunnytoday.Let’sgoclimbing.—I’dloveto,butIhavetofinish_____report.Imusthanditintomorrow.A.an800-wordB.a800-wordC.an800-wordsD.a800-words【考点点拨】“基数词-名词(-形容词)”构成的复合形容词用于修饰名词，意为“……的”，连字符连接的名词和数词均用单数形式。考点五：世纪和年代表达法【经典练习】单项选择。1.Doyouknowwhatthemostimportant2.thinginthe______centuryis?A.twenty-oneB.twentieth-firstC.twenty-firstD.twentieth-one2.Idon’tknowexactlyinwhichyeartheymovedtoBeijing,butI’msuretheymovedtoBeijing______.A.in1980sB.inthe1980’C.inthe1980sD.inthe1980s’【考点点拨】◆英语中，表达“第……世纪”时要用序数词。◆同时表达世纪和年代时，对应的数词需用复数形式，如：inthe1930s/1930’s(inthenineteenthirties)在20世纪30年代。考点六：日期和时刻表达法【经典练习】单项选择。1.—Whatwasthedateyesterday?—___________.A.ItwasFridayB.ItwasthefifthdayC.ItwasAprilfiveD.ItwasAprilthefifth2.—WhenwasyourfavouritewriterHanHanborn?—Hewasborn_______.A.onSeptember23rd,1982B.on1982,September23rdC.inSeptember23rd,1982D.in23rdSeptember,19823.Anotherwayofsayingthetimeofelevenfortyis______.A.twentytoelevenB.twentytotwelveC.twelvetotwentyD.twentypasttwelve4.—Couldyoutellmewhattimeitisnow?—It’s______.A.tenandfortyB.fortypasttenC.fortytotenD.tenforty【考点点拨】◆日期的表达一般为“月日，年”或“日月，年”，并且具体日子要用序数词。◆时间表达法如下：(1)整点时间：基数词+o’clock。如：7.00→seveno’clock(2)非整点时间：A.时+分。如:2.40→twoforty,5.10→fivetenB.分+past+时，不超过半小时。如：3.20→twentypastthree；分+to+时，超过半小时。如：2.48→twelvetothreeC.表示15分钟通常用quarter，半小时通常用half。如：3.15→aquarterpastthree3.30→halfpastthree考点七：表示编号和某人不确切年龄的用法【经典练习】单项选择。1.—Whichclasswonthematchintheend,John?—__________.A.ClassThirdB.ClassThreeC.ClassthreeD.thirdClass2.—WhendidHenrygototheUnitedStates?—I’mnotsure.Maybe_______.A.onhistwentiesB.inhistwentiesC.inhistwentyD.inthetwenty【考点点拨】◆数字表示编号时通常与名词连用。如：PageOne，Room207，No.1MiddleSchool◆表示某人的不确切年龄时，通常用几十的复数形式表示，翻译为“几十来岁”。【巩固与提高】I.用括号内所给单词的正确形式填空。1.Mygrandmaisnearly_______(sixty)2.yearsoldnow.2.Aboutthree_______(four)oftheearthiscoveredwithwater.3.Anewstudyshowsthata_________(30minutes)walkeverydayisenoughtokeeppeopleawayfrombecomingfat.4.—Whichfloordoesyourcousinliveon,Adam?—Oh,helivesonthe______(twelve)floor.5.AlthoughIfailed,myfatherencouragedmetohavea_______(two)try.secondsixtyfourths30-minutetwelfthⅡ.单项选择。1.—What’sthedatetoday?—Itis_________.A.4o’clockB.inJulyC.ThursdayD.June4th2.The_______boycansingtheEnglishsongverywell.A.ten-years-oldB.tenyearsoldC.ten-year-oldD.tenthyearsold3.Ittookthepolice_______tofindthelostboy.A.oneandahalfhourB.oneandahalfhoursC.oneandhalfhoursD.oneandhalfhour4.Thenum