初中英语数词专项

数词讲解专项练习数词的讲解一、定义：表示数量或序次二、分类:分为基数词和序数词两种.表示数量或数量多少的词叫基数词;表示数量序次的词叫序数词。三、基数词的组成：1)1-12eight,nine

的基数词是独立的单词，即：，ten，eleven，twelve

。

one

，two

，three

，four,five

，six

，seven

，2）13—19

的基数词以

—teen

结尾。如

:fourteen

，seventeen

等,但

13,15，18

较特别，13—thirteen,15

—fifteen,18

—eighteen

。3）20-90

的整十位均以

—ty

结尾。如：

sixty

，ninety

，但

20，30,40，50,80

较特别，20—twenty,30-thirty,40

—forty，

50—fifty，

80—eighty

。4）十位数与个位数之间要加连字符号

”—”，如：

28—twenty-eight

，96—ninety-six

。5)百位和十位（若无十位则和个位）之间加

and

，如：148-onehundredandforty

—eight406—fourhundredandsix6）hundred(词，several,some

百)，thousand（千）,million(，many也不能够在它们的后边加

百万),billion—s。如：

（十亿）等前面即使有详尽的数sixhundred，eightmillion

。如果表示不确定数量时，用

hundredsof/thousandsof/millionsof/billionsof+

名词复数

,

前面不能再加数字。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,我们能够用"几十个千（thousand）"表示几万，”几百个千(thousand）"表示"几十万"。如：2,510twothousandfivehundredandten84，296＝eighty—fourthousandtwohundredandninety-six274，350＝twohundredandseventy-fourthousandthreehundredandfifty.四、序数词的组成：1）序数词一般是以与之相应的基数词尾加-th组成，如:fourth,tenth,但以下的这些基数词变成序数词时，有特别之处.One-first，two—second，three—third,five—fifth,nine-ninth，twelve—twelfth2）以_ty结尾的单词,要先变y为i，在加-eth.。如:thirty—thirtieth,fifty—fiftieth3）以one，two,three等结尾的多位数词，要将个位数变成序数词。如：twenty-one—twenty-first，onehundredandone—onehundredandfirst注意:序数词前常用定冠词，有时还可以够用不定冠词a/an则表示”又一”的意思。（没有详尽范围的限制）如：Mr。Brownhasasecondcar.布朗先生别的还有一辆车。Hehastriedasecondtime.他又试一试了一次。五、数词的应用时刻的表示:小时、点钟、分钟、秒钟要用基数词.①“几点钟”用基数词加o’clock。o'clock可省略.如:5点钟—five（o’clock）②“几点过几分”,≤分30钟"用介词past。如：7:15—fifteen/aquarterpastseven7：30—halfpastseven③“差几分几点”用介词"to”。如:7：40-twentytoeight7:45—fifteen/aquartertoeight.④平常生活中的时间读法常常简化,直接按基数词的序次读。如：7：05—sevenofive7:15—sevenfifteen.2)年月日的表示：①年份用基数词,如：1999年—nineteenninety—nine1900年—nineteenhundred2000年—twothousand1905年—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—eight。3）世纪、年月表示法，如：（在)90年月（in)thenineties（在)19世纪（in)thenineteenthcentury（在)18世纪30年月（in)the1730s或inthe1730's4）编号的表示：①基数词放到名词的后边，该名词一般要大写;序数词放到名词的前面，加定冠词.Lesson1/thefirstlesson第一课Row3/thethirdrow第三排BusNo。3=theNo。3bus3路公共汽车。③表示住所时不用

No

。如：

Room302

读作：

roomthreeotwo302

房间。④若是编号的数词比较长，一般用基数词。如

:Page457

第

457页。⑤电话号码

,用基数词，如

:3855633-threeeightdoublefivesixdoublethree

。5）分数的表达

:分子用基数词，分母用序数词

,分子大于

”1"分,母则加

”s”如.：1/3onethird2/3twothirds1/2a/onehalf1/4onefourth

或

a/onequarter3/4threefourths或threequarters表示有小数的词用基数词,如:5。5fivepointfive12。135twelvepointonethreefive7）表示百分数,如：5℅:fivepercent0.8

℅

zeropointeightpercent注意：分数、百分数与主谓一致当分数、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

修饰不行数名词时，谓语动词用单数形式。如：EightypercentofthestudentsinourschoolcomefromHenan

。我们学校百分之八十的学生来自河南。ThreefourthsofthestudentsinmyclassareinterestedinEnglish.我们班四分之三的学生对英语感兴趣。Twothirdsofthewaterontheearthisseawater。地球上三分之二的水是海水。8）其他用法，如:①基数词+单数名词+形容词组成合成形容词。如：afive-year-oldboy一个五岁的男孩an800-metre—longbridge一座800米长的桥girls’400-metrerelayrace女子400米接力②详尽数词+metre(s)/kilometre(s）/kilo（s)long/high/tall/deep/away等。如：TheChangjiangRiveris6,300kilometreslong。长江长6300公里。③表示“几十岁”用基数词的复数形式,如:inhisthirties在他三十几岁时④倍数的表达:一倍用once,两倍用twice，两倍以上用基数词+times。如：fivetimes5倍补充:倍数的表示法:1。表示“几倍大小（长短;数量)”由,“倍数+thesize(length,amountwidthageheight。）+of结”构组成。如：Theearthisforth-ninetimesthesizeofthemoon。地球的大小是月亮的四十九倍.表示“比,,,,大几倍”由,“倍数+形容词(副词)比较级+than+被比较部分”构造组成.如：Thisboxisthreetimesbiggerthanthatone.这个箱子比那个箱子大三倍.（这个箱子是那个箱子的四倍。)数词练习(）1.Everyyear，_____peoplegotovisittheirfactoryA.athousandofBthousandsC。thousandofD。thousandsof(）2.Tomhasjustfinishedwritinga_________article。A.nine—hundred-wordsB.nine—hundreds—wordC。nine-hundred-wordD。nine-hundreds—words（)3。_______peoplelosttheirhomesinJapan’searthquake.A.TwothousandsB。ThousandC.ThousandsofD.Thousandof（)4。Lastyear，IvisitedachemicalfactoryinBaise，thereareabout_____workersinit.A.sixthousandsB。sixthousandC。sixthousandsofD。sixthousandof（）5.About_______ofthestudentsinourclasswereborninthe_____.A。two-thirds，1990sB。two-thirds,1990C.two—third，1990sD.two-third,1990（）6。NowadaysofbusinesslettersarewritteninEnglish。A.twothirdB。twothirdsC.twothreeC.secondthree（)7.-Ifa=4,b=5，what’stheanswertothequestion“a+2ab+1？="—A.Forty—fifthB。Forty-fiveC。Twenty-threeD.Onehundredandtwenty-one(）8.—Howoftendoyouexercise？—_________aweek.A。TwoB.TwiceC。SecondD.Three（）9.Theteachersaidthat__oftheboyswouldtakepartinthetalentshow.A.threefiveB.threefivesC.thirdsfifthsD.threefifths（)10。Tomorrowistheboy’s________birthday.A。seventhB.sevenC.seventeenD。aseventh(）11.—Whichisthebiggestnumberofthefour?—。A.One—thirdB。Two-thirdsC。AhalfD.Aquarter（）12。—Excuseme，wherecanIbuyajacket?—YoucangototheMen’sWearSectiononthe_________floor.A。twoB.twiceC.secondD。three( )13.___ofthelandiscoveredwithtreesandgrassinPingjiang,Yueyang.A.ThreefivesB。ThreefifthsC。ThreefifthD。Threesfifth( )14.Septemberis_____monthoftheyear.A.ninthB.nineC.thenineD。theninth(）15。—Howwasyourdayoffyesterday？—Perfect！Itwasmygrandma’s________birthday。Wehadabigcake。A.eightyB.eightiethC.theeightiethD。theeightieth(）16.—Excuseme，howcanIgettothemuseum？—Sorry.It'smy______timetobehere。A。oneB.firstC。onceD.two（)17.Youcansee_______ifyougooutatnight。A。millionstarsB。thousandofstarsC。hundredsstarsD.millionofstars(）18。—Isthisyour________visittomyhometown,Zunyi?—No。I’vebeenhereformanytimes。A。oneB。thefirstC.firstD.twice（)19。Morethanninestudentsaredoingsportsnow。A.hundredsB。hundredofC.hundredD。hundredsof(）20。Now,everybody,pleaseturntoPage________andlookatthe________picture.A。Fifth;fiveB。Five;fifthC.Fifth;fifthD。Five；five( )21。Forbreakfast,Iusuallyhave______andtwopiecesofbread。A.acupofmildhalfB。halfacupofmilkC。ahalfmilkcupD.halfamilkcup（）22.ThegovernmentofChongqingisbuilding_______cheapandgoodhousesforthepeople

。A.thousandB

。

thousandsC.thousandofD

。

thousandsof)1.Thereareabout________studentsinourschool.A。twothousandofB.twothousandsC。twothousandsofD.twothousand)2。Thereare________studentsinourgrade。A.threehundredsandforty—fiveB.threehundredandfortyfiveC。threehundredforty—fiveD。threehundredandforty—five（）3.Sundayis________dayoftheweek.A.thefirstB.oneC。heseventhD。theseven（)4.Pleasecometomyoffice。A.athalfpasteightB.athalfpassedeitherC。inhalfpasteightD。onhalfpasteight( )5.Ifyouwanttogotothecinema,take________。A.busNo.theninthB.theNo.9busC。No。9thebusD.No。theninthbus（)6。TheGreenscametoChina________.A。in1984October27B。inOctober27,1984C。on27，1984OctoberD.onOctober27,1984(）7。Thestorytookplacein________.A。nineteencenturiesB。nineteencenturyC。thenineteenthcenturyD。nineteenthcentury（)8。IwastoldtheywouldstayinChinafor。A。oneandahalfyearsB.oneandahalfyearC.oneandhalfyearsD。onehalfandoneyear（）9。Tomorrowwearegoingtolearn________.A.LessonSecondB.theLessonTwoC.LessonTwo。Dsecondlesson)10.Ithinkthatthefirstdayofspringis________.A。twenty-twoofMarchB.twenty—secondonMarchC。twenty—twoinMarchD.thetwenty-secondofMarch（)11。________letteroftheword“restaurant”is“n”.A.TheninethB.NinethC。TheninthD。Ninth( )12。Wetalkedfor________。A。halfahourB。halfhourC.anhourhalfD。halfanhour（）13。Thebuswillleaveat________thisafternoon.A。threefifteenB。threeandfifteenC.threequartersD。fiftytothree（）14.Theearthis________thesizeofthemoon。A.49thetimesB.49timesC.49timeD。fourty-ninetimes(）15.It’sa________ruler.A。two—feet-longB。twofeetlongC。two—foot—longD。two-foot-long( )16。________studentsareplantingtrees.A.SeveralhundredsB。SeveralhundredC。FivehundredsD。Fivehundredof)17.________tofinishquickly.A.NoeverystudentwantsB.NoeverystudentwantC.NoteverystudentwantsD。Noteverystudentwant（）18。________ago，ourcountrywascoveredbythickforests。A.SeveralmillionofyearB.SeveralmillionyearC.SeveralmillionyearsD.Severalmillionofyears（）19。Theweightofthemoonisonlyabout________ofthatoftheearth.A。oneeightyB.oneofeightyC。onetheeightiethD.oneeightieth( )20。It’s：1145。Yes，it’s。A.fifteenpasttwelveB.fifteenfromtwelveC.aquarterpasteightiethD。aquartertotwelve( )21。Whatdateisit?It’s。A。Julytwentieth-firstB。ofJulytwenty-firstC。thetwenty-firstofJulyD。aquartertotwelve( )22。--——________，please?———-ItwasApril25th。A。HowoldareyouB。WhatwasthedateyesterdayC。WhattimewasitD.Whatdayisittoday(）23.Ihave________thingstodo.Ican'tplay________.A.many,nomoreB。alotof，anymoreC.much，moreD。much,anymore( )24。Ihavea________paperonmydesk.A。littleB。lotC.lotsD。littleof（）25.Thisis。A.thequestionthirtyB。thequestionthirteenC。thirtyquestionD.questionthirteen)26.________oftheworkhasbeendone.)27.It's________now。Let'shurry。A.halfpassedsixB。thirtypassedsixC.halfpasssixD.halftoseven(）28.What’sthedatetoday？It’s。A.theJunefourthB。thefourthofJuneC.ofJunethefourthD。fourthJune( )29。Nextweekwe’regoingtolean________.A。unit5B.theunit5C.Unit5D.5Unit)30.Doyouhavemuchworktodothisweekend？Yes,Ihavetowritea________paper.A.two—thousand—wordB。two—thousand-wordsC。two-thousands—wordD。two—thousands-words（）31。Thetreeis________tall。A.forteenfeetB。fourteenfeetC.fourteenfootD。fourtyfoot( )32。Fiftyplus________。A。fourtyisninetyB。fortyisninetyC.thirtyisninetyD.fourtyisninety)33。Thereare________studentsinthisschool。A.fourhundredfifty—twoB。fourhundredsfifty-twoC.fourhundredandfifty—twoD。fourhundredandfiftytwo(）34。Myhomeisabout________awayfromtheschool.A.threehundredmetreB.threehundredsmetresC.threehundredmetresD.threehundredsmetre（）35.Decemberis________andlastmonthisayear.A。thetwelvethB。twelvethC。thetwelfthD。twelfth)36.________oftheteachersintheschoolarefromcolleges。A.ThreequartersB。Two—thirdC。TwofifthD。Two—nineths)37。Therearetwoworldwarsduring________century.A。thetwentiesB。thetwentiethC。twentiesD。twentieth( )39.Intheforties，hisfatherservedintheNew________Army(新四军),whilethismotherworkedinthe________RouteArmy。（八路军)A。thetwenty-firstlessonB.LessonTwentyFirstC。the21thlessonD.Lesson21th(）40.Hewillstayherefor________。A。oneandhalfmonthB.oneandahalfmonthC。onemonthsandhalfD.oneandahalfmonths)41。-—--What’sthedatetoday？—-—-It's________.A.nineB。MondayC.June5D。11：00（）42。————Wouldyouliketoeat________apples?-———No，thankyou。A.moretwoB。twomoreC。twoanotherD。twoelse（）43.Hesaidhewouldcomebackin。A。oneortwodaysB.aortwodaysC。oneandtwodaysD.adayandtwo（）44。-——Howoftendoyouwritetoyourparentsabroad？-——-________.A。TwiceamonthB.SecondtimesamonthC。AsecondtimeamonthD.Secondatimeamonth( )45.________peoplediedinthetrafficaccidentsintheworld。A。ThousandofB.Thousandsof。CTenthousandsofD.Tenthousandof)46。Whatisthetime？It's________。（4：25)A.fourtwenty—fiveB。fourpasttwenty—fiveC。twenty—fivetofourD.fourtwentyfive(）47.Mr。Smithliveson________floor。A.fivethB.fifthC.thefivethD.thefifth( )48。HebegantolearnEnglishinhis。A。fiftyB.fiftiethC。fiftiesD。fifth)49。Hissisterwasborn________。A。in1998,October21B。on1998，October21C。inOctober21，1998D.onOctober21,1998(）50.Whenhewas________，helefthometoworkindifferentcities.A.inhistwentyB。athistwentyC.inhistwentiesD。athistwenties（）51。I’m________thanyou.A.fiveyearsolderB。fifteenyearoldC.fifteenyearsD。fifteenold（)52.————Howoldareyou？—I’m。A.fifteenyearsoldB.fifteenyearoldC.fifteenyearsD。fifteenold)53.Howmanyteachersarethereinyourschool?—-—-________，butI’mnotsure。A.HundredsB。HundredC。HundredsD。Onehundred( )54。About________ofthebooksinourschoollibraryarewritteninChinese。A.four-fifthB.four—fift