初中英语数词专题练习（原卷版） 8页

学&科&网…学&科&网…学&科&网…学&科&网…数词英语数词表示数目或者顺序，可分为基数词和序数词。基数词表示数量，序数词表示顺序。知识梳理：提纲挈领，抓住重点和难点！一、基数词的构成1.1—12的基数词是独立的单词,即：one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelveo2.13一19的基数词以・teen结尾。如：fourteen,seventeen等，但13,15,18较特殊，13—thirteen15一fifteen18—ighteeno3.20一90的整十位均以・ty结尾。如:sixty,ninety,但20,30,40,50,80较特殊,20一twenty30—thirty40一forty50一fifty80—eightyo4.十位数与个位数之间要加连字符号“』，如：28—twenty-eight,96—ninety-six05.百位和十位（若无十位则和个位）之间加and,如：148―nehundredandforty-eight406一fourhundredandsixo6.hundred（百），thousand（千）,million（百万）,billion（十亿）等前面即使有具体的数词，也不能在它们的后面加So如:600一sixhundred,8百万―ightmillion<>7.1000以上的数字，从后往前数每三位加一个逗号“，”第一个逗号前为千（thousand），第二个逗号前为百万（million）,第三个逗号前为billion（十亿）。英语中无“万"这个词，我们可以用“几十个千（thousand）"表示几万，"几百个千（thousand）"表示"几十万"。如：2,510=twothousandfivehundredandten；84,296=eightthousandtwohundredandninety-six；274,350=twohundredandseventy-fourthousandthreehundredandfiftyo二、序数词的构成序数词一般是以与之相应的基数词尾加・th构成，例如fourth,tenth,但以下的这些基数词变为序数词吋，有特别之处。Lone■一first,two■一second,three■一third,five—fifth,nice■一ninth,twelve■一twelfth2.以ty结尾的单词,要先变y为I,在加・eth.例如:thirty…thirtieth,fifty■一fiftieth3.以one,two,three等结尾的多位数词，要将各位数变成序数词。例如：twenty-one―twenty-first,one\nhundredandone―onehundredandfirst注意：序数词前常用定冠词，有时还可以用不定冠词a/an则表示“又一^的意思。\n例如：MrBrownhasasecondcar.布朗先生另外还有一辆车。Hehastriedasecondtime.他又尝试了一次。三、数词的应用1.时刻的表示：小时、点钟、分钟、秒钟要用基数词。①"几点钟”用基数词加o'clockoo*clock可省略。如：5点钟一five(orclock).②''几点过几分''，三30分钟”用介词past。如：7：05—fivepastseven；7：15—fifteen(aquarter)pastseven；7：30一halfpastseveno③"差几分几点"用介词"to"。如：7：40一twentytoeight；7：45一fifteen(aquartertoeight□④日常生活中的时间读法常常简化，直接按基数词的顺序读。如：7：05—sevenofive；7：15—sevenfifteeno2.年月日的表示：①年份用基数词，如：1999年一nineteenninety-nine；1900年一nineteenhundred；2000一twothousand；1905一nineteenofive；②年用基数词，日用序数词。如：1998年6月8日写作：June8,1998；读作：Junetheeighth,nineteenninety-eight或theeighthofJune,nineteenninety-eighto3.世纪、年代表示法：(在)90年代(in)thenineties(在)19世纟己(in)thenineteenthcentury(在)18世纪30年代(in)1730s或1730M4.编号的表75：(DLessonOne=thefirstlesson第一课；©BusNo.3=theNo.3bus3路公共汽车；③表示住所吋不用“No.”如：302房间一Room302(读作：roomthreeotwo)；④如果编号的数词比较长，一般用基数词。女口：Page457第457页；⑤电话号码，用基数词，如：3855633一threeeightfivefive(doublefive)sixthreethree(doublethree)。5.分数的表达：分子用基数词，分母用序数词，分子大于T",分母则加“s”。女0：1/3onethird,2/3twothirds；\n另夕卜：1/2a(one)half;1/4onefourth或a(one)quarter;3/4threef<)urths或threequarterSohalfasecond;aquarterofasecond四分之一秒1.表示有小数的词用基数词。5.5fivepointfive12.135twelvepointonethreefive2.表示百分数5%：fivepercent(percent),0.8%zeropointeightpercent(percent).3.表示有小数的词用基数词。5.5fivepointfive12.135twelvepointonethreefive4.其他用法：1)基数词+单数名词+形容词构成合成形容词。女口：一个五岁的男孩afive-year-oldboy；一座800米长的桥an800-metre-longbridge；女子400米接力girls'400-metrerelayrace。2)具体数词+metre(s)/kilometre(s)/kilo(s)long/high/tall/deep/away等。如：长江长6300公里。TheChangjiangRiveris6,300kilometreslong.3)表示”儿十岁”用序数词，eg.在他三十儿岁时inhisthirties4)倍数的表达：(一倍用once,两倍用twice,两倍以上用基数词+times。如：5倍fivetimes)o例如：HeisastallaboyasI.HeisaheadtallerthanI.HeistwoyearsolderthanIChinaisfourtimesaslargeasEurope・Iamtwiceasoldasyou.(=1amtwiceolderthanyou./Iamtwicetheageofyou.)Mybooksaretwiceasmanyasyours・ChinaisfourtimeslargerthanEurope.(=ChinaisfourtimesthesizeofEurope.)Ipaytwiceasmuchasitwasworth.Ipaytwiceasmuchforthehouse.\n例题解析：举一反三，学的更轻松！1・ChinesearelookingforwaystolearnEnglishwellbeforeBeijing2008Olympic.A.ThousandB.ThousandsC・ThousandofD.Thousandsof2.Bothoftherulesarebroken.Iwanttobuyaone.A.threeB.thirdC.forthD./\n2.一-Whichisthesmallestnumberofthefour?A.Two-thirdsB.AhalfC.AquarterD.Three-fourths3.Pleasewritedownthenewwordsinthetextof・A.LessonElevenB.theLessonElevenC・LessonEleventh练习与巩固：熟能生巧，取得好成绩！选择填空：4.ofpeopleintheworldarcsendinginformationbyE-maileverday.A.ManymillionB.SeveralmillionC.SeveralmillionsD・Manymillions5.Aboutofthesurfaceoftheearthcoveredwithwater;A.threequarter,isB.threequarters,hasC.threequarters,isD.threequarter,arc6.Itwilltaketimetofinishthework.A.oneandahalfyears'B・ayearandhalfC・oneandahalfyearnsD・ayearandhalf's&—Howlongwillyoustayhere?—For.A.oneandtwoday^sB.oneandtwodayC・adayortwoD.oneortwoday9.WhenhemovedtoGermanyin,hewasalreadyin・A.thefifties;hissixtiesB.fifties;hissixtiesC.thefifties;hissixtyD.fifty;sixty10.Mybrotherlivesinonfloor.A.sixRoom;sccondB.RoomSix;thcsecondC.Roomsix;twofloorD.theroomsix;thesecond11・Decemberismonthoftheyear.A.twelveB.twelfthC.thetwelfthD.thetwelve12.Thistookplaceinthe.A.1940B.1940sC.1940esD.1940th13.Itisonlyfrommyhometothetrainstation.A.tenminuteswalkB.tcn・minuteswalkC.tenminutes'swalkD・tenminutes'walk14.Thereareinthisbuilding,Iliveon・\nA.ninefloors,theninthfloorB.ninefloor,theninthfloor\nC.ninefloor,ninefloorsD.ninthfloor,theninthfloor12.ThewaterbehindtheThreeGorgesDams（三峡大坝）shouldbe_higherthandownstream（下游）。A.sixty-fivemeterB・sixty-fifthmeterC.sixty-fivemetersD.sixty-fifthmeters13.Therearedaysinayear.A.threehundredsixty-fiveB.threehundredsandsixty-fiveC・threehundredandsixty-fiveD.twohundredsandsixty-five14.■一Howmanyteachersarethereinyourschool?―,butFmnotsure・A.HundredsB.HundredC.HundredsofD.Onehundred1&Therearcdoctorsandnursesworkinghardinthathospital・A.thousandB.twothousandC・twothousandsD.twothousandsof19.—What'sonefourthandahalf,doyouknow?…Yes,it's.A.twosixthsB.threefourthsC・onethreeD.threesixth20.Nowchildren,turntopageandlookatthepictureinLessonTwo.A.twentieth,oneB.twenty,oneC・twentieth,firstD.twenty,first21.Bothofthetworulersarebroken.Iwanttobuyaone.A.threeB.thirdC.forthD./22.Decemberisthemonthinyea匚A.twentyB.twelveC.twentiethD.twelfth23.…Whatisthedatetoday?—Ifs.A.ThursdayB.JunethesixteenthC・thebestdayD・Junefifteen24.SheknowsalotaboutChinaasshehasbeentoChina・A.forthefourthtimeB.fourtimesC・afourthtimeD.forfourtimes