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专题五 数词考点一数词的分类知识讲解数词分为基数词和序数词。
基数词变化特点例词1-12的基数词独立的单词one, two, three, four, five, six, seven,eight, nine, ten, eleven, twelve13-19的基数词以-teen结尾如：fourteen, seventeen等。
13，15，18较特殊，13thirteen,15fifteen, 18eighteen20-90的整十位均以-ty结尾如：sixty, ninety. 但20，30，40，50，80较特殊，20 twenty, 30 thirty,40 forty, 50 fifty, 80 eighty整十之间的数（大于20的）整十加个位数整十和个位数之间要用连字符-。
如：28 twenty-eight, 96 ninety-six百位数以上的数字百位和十位（若无十位则和个位）之间加and如：148 one hundred and forty-eight，406 four hundred and six序数词变化待点例词一般的在与之相应的基数词尾加-th构成fourth, tenth特殊的无规律，需要特殊记忆one first, two second, three third, five fifth, nine ninth, twelve twelfth以y结尾的单词要先变y为ie，再加-th thirty thirtieth, fifty fiftieth 以one， two和three等结尾的多位数词要将个位数变成序数词twenty-one twenty-first,one hundred and oneone hundred and first名师点拨巧记基数词1至12分别记，13至19都带-teen，整十后缀要用-ty，连字符用于几十几，百位以上and连，拼法特殊的要注意。
经典提炼请写出下列数字的序数词形式。
20÷4＝5：Twenty divided by four is five.Four into twenty goes five.（七）. 约数、不定数量词“多”的表示法列表约数表示法列表含义英语表达例句大于某数more than He has lived here for more than twenty years.over she is over fifty.or more There' re thirty people or more in the meeting-room.小于某数less than I have less than (not more than )fifty dollars.under Children under seven are not allowed to enter.below He would not sell it for below a hundred fifty dollars.or less The coat might cost him sixty dollars or less.大约（某数）nearly She is nearly fifty now.almost Its almost three o'clock.up to Up to ten men c an sleep in this tent.or He spent four or five days writing the article.or so The distance is twenty miles or so.about I visited that village about three years ago.some Their team has some four or five players.more or less The container can hold more or less twenty pounds of water.around/round Let's make it round/around eight o'clock.不定数量词“多”的表示法列表被修饰名词的数英语表达汉译修饰可数名词几十、许多修饰不可数名词许多、大量31.It is not rare in ___that people in ____fifties are going to university for further education.A.90s,theB. the 90s, /C.90s, theirD. the 90s, their32.-Have you seen many sheep in the distance ? -Yes, ___.A. thousand of themB. two thousands of themC. two thousand of themD. two thousand them5．A 这里"first"有人说起副词作用，可以看成表语，也可以看做一种"取得第一名"的习惯用法。
小学英语语法专题训练：数词一、单选题（共28题）1.This city has got seven ________ people.A. millionB. millionsC. millions of2.I think ten hundred is a ______ .A. thousandB. millionC. kilometre3.There are chickens in the photo.A. aB. oneC. three4.There are twenty-five in the class.A. childB. childrenC. girl5.There weren't buses.A. someB. anyC. one6.three × four =A. elevenB. sevenC. twelve7.one + eight =A. nineB. sixC. seven8.nine - six =A. fiveB. threeC. six9.seven - two =A. fiveB. nineC. four10.— How many pandas are there?— There are pandas.A. oneB. threeC. a11.Two and is seven.A. sixB. fiveC. four12.ten ÷ five =A. fourB. twoC. five13.Nine and three is ______.A. elevenB. twelveC. six14.One, two, three, ______, five.A. fourB. oneC. five15.________________ I write the name of a friend.A. WellB. OnceC. OneD. First16.Children's Day is on the of June.A. firstB. secondC. thirdD. fourth17.Our art room is on the ___________floor.A. oneB. twoC. second18.New Year is on ________ day of January.A. oneB. firstC. the first19.Thursday is his _____________________ birthday.A. elevenB. eleventhC. eleven's20.I can see thirteen _______.A. kiteB. a kiteC. kites21.______plates?A. AB. someC. Six22._________ peas lived together in a pod.A. fiveB. FifthC. Five23.Jenny came _____ in the game.A. oneB. secondC. firstly24.Look at that book. There are ________ words in it.A. three hundredB. three hundredsC. three thousands25.He is 1.6 tall. He is than this desk.A. meter; tallB. meters; tallC. meters; taller26.Now there are only about ________ pandas in the wild.A. one thousand and six hundredsB. one thousand six hundredC. one thousand and six hundred27.There are ________ girls in our school.A. nine hundredsB. nine hundred forty oneC. nine hundred and forty-one28.Tomorrow is my ______________ birthday. My parents will buy a big cake for me.A. twelveB. twentyC. twelfth二、选词填空（词汇运用）（共2题；共2分）29.The Great Wall is about twenty________ (thousand/thousands) kilometres.30.It was the ________ (first/one) time for me.三、语法填空（共16题；共17分）31.There are two________ (library) in our school.32.I have three________ (pen friend) from the US.33.Our music room is on the ________(one) floor.34.There are ________(third) computer rooms in my school.35.There are twenty________ (child) in the class.36.The music room is on the ________ (two) floor.37.It's our ________ (one) spaceship.38.It is more than two________ （thousand）years old.39.My bedroom is on the ________ (two) floor.40.May is the________(five) month of a year.41.The ________(three) day, we went to the Great Wall.42.Are you going to eat or play with the toys________(one)?43.Our classroom is on the ________ (three) floor.44.The ________ (two) and the ________ (one) peas want to fly to the sun.45.Miss Liu is on the ________ (three) floor.46.I live on the________ (nine) floor of the building.四、填空题（共2题；共10分）47.算一算，将正确答案写在横线上（1）three × five = ________（2）________ + four = eighteen（3）ten + ten = ________（4）six + seven = ________（5）ten - ________ = eight48.看图，读单词写数字例：cow 1（1）cat ________（2）pig ________（3）sheep ________（4）duck ________（5）bird ________五、匹配题（共2题；共10分）49.读一读，加一加，减一减。
一、选择正确的选项。
1We don't have enough nurses to look after the patients.At least___are needed.A.ten another nursesB.more ten nursesC.other ten nursesD.another ten nurses2It's said that_____of the water around the world____polluted.A.two third;hasB.two thirds;haveC.two third;areD.two thirds;is 3There are______months in a year.October is the______month.A.twelve;tenB.twelfth;tenthC.twelve;tenthD.twelfth;ten4-Have you seen the CCTV news on TV?-Yes，_____children had a good festival on the_____Children's Day.lions of;sixtyB.len million;sixtylions of;sixtiethD.ten millions;sixtieth5Father's Day is on______Sunday of June.A.threeB.thirdC.the third6-“Food Safety"has become one of the hottest topics recently.-Yeah,it receives_________Internet hits(点击)a day.A.thousandsB.thousand ofC.thousands ofD.ten thousands7About______of the workers in the factory were born in the_______.A.two thirds;1970B.two thirds;1970sC.two third;1970D.two third;1970s8It is five years since we began to enjoy______spring holiday each year.A.ten-dayB.ten dayC.ten day'sD.ten-days二、单选1.-How was your weekend?-Great!It was my grandfather's___birthday.We enjoyed ourselves. A.seventy B.seventiethC.the seventiethD.seventeenth2.-I hear your friend is visiting SanYa again.Is it the second time for him? -Yes,and he will come for_____time next springA.a thirdB.a secondC.the third3.It is reported that people throw______plastic bags along this street every day.A.hundredB.hundredsC.hundred ofD.hundreds of4.Some scientists think that it will take_____of years to make robots do most work for humans.A.hundredsB.hundredC.thousand5.-If a=4,b=5,what's the answer to the question“a+2ab+1=?”-______.A.Forty-fifthB.Forty-fiveC.Twenty-threeD.One hundred and twenty-one6.-How was your day off yesterday?-Perfect!It was___birthday of my grandma's.We had a big family celebration.A.eightyB.the eightiethC.eightieth7.-Good news!Bill won______medal in the long jump just now.-Really?That's his______one at our sports meeting.A.a;fourB.an;fourthC.a;fourth8.-____will your brother be back?-I’m not sure,maybe in____A.How soon;one hour and halfB.How soon;one hour and a halfC.How long;one and half hoursD.How long;one and a half hours9.-There is a wrong word in line______-Where?-In the___line.A.two;twoB.two;secondC.second;twoD.second;second10._____of the students in our class________money to the disabled people these daysA.Two third;have raisedB.Two thirds;has raisedC.Two three;have raisedD.Two thirds;have raised11.The work is too difficult for Mr.Zhu to finish in a week.He needs_______ days.A.more twoB.two moreC.two anotherD.another more12.It is reported that_____people in the world are suffering from the H1N1 flu.A.several thousands ofB.ten thousandsC.thousands ofD.thousands13.___is Teacher's Day in China.A.The September tenthB.Ten of SeptemberC.September the tenthD.Tenth September14.He is_____in our class.A.the fourth tallestB.fourth tallestC.four tallestD.the four tallest15.The road is over__metres long.A.six hundred and fifty-twoB.six hundreds and fifty-twoC.six hundred,fifty-twoD.six hundred,fifty and two16.Kate lives in___.Mine is next to hers.A.the room fiveB.Room FiveC.five room17.My school isn't far from here.It's only____walk.A.fifteen minutesB.fifteen minutesC.fifteen minute's18.People often live a hard life____A.in the fortyB.in the fortiesC.in fortyD.on forties19.We all think that the_____century will bring us more hopes.A.twenty-firstB.twentieth-firstC.twenty-oneD.twentieth-one20._____the students usually surf on the Intemet and get information.A.60percents ofB.60percentC.60percent ofD.60percents21.The low temperature will be minus5℃.The underlined part means_____.A.5℃B.-5℃C.0.5℃D.<5℃三、单选1—What should we do now,Mr.Clark?—Please turn to Page_____and look at the_____picture.A.Twelve;fifthB.Twelfth;fifthC.Twelve;fiveD.Twelfth;five2.Mother’s Day is on the___________Sunday in May every year.A.twoB.secondC.sixD.sixth3.We planted trees last year.A.hundreds ofB.hundred ofC.five hundredsD.five hundred of4..—Excuse me,sir.Here’s a package for Lin Tao.Which room does he live in?—_____________.A.308RoomB.Room308C.The Room308D.The308Room5.To finish the task,we’re tried three times,and after dinner we’ll try _____time.A.the fourthB.a fourthC.fourthD.four6.It’s said that______of the water around the world______polluted.A.two third;hasB.two thirds;haveC.two third;areD.two thirds;is7.of our classmates are good at basketball.A.Three quartersB.Three fourthC.third four8.The earthquake in Ya’an left_______people homeless.A.two thousandsB.thousands ofC.two thousands ofD.two thousand of9.Amy will have her birthday next Friday.A.twelveB.twelfthC.the twelfth10.My mother bought me a sweater for my________birthday.A.twelfthB.twelveC.the twelfth11.There are______people in the zoo on Children’s Day.A.one hundredsB.two hundreds ofC.hundreds ofD.hundred of12.Boys and girls，please turn to Page and look at the picture．A．Fifth；five B．Five；fiveC．Fifth；fifth D．Five；fifth13.Kate is a schoolgirl．She got many presents on her birthday．A．nine B．the ninth C．ninetieth D．ninth14.It’s reported that over eight people lost their lives in theearthquake in Nepal this year．A．thousand B．thousandsC．thousand of D．thousands of15.December is and last month of a year．A．the twelfth B．twelfth C．the twelve16.Tony's mum looks young and beautiful．It’s hard to imagine she is alreadyin her．A．fifties B．fifty C．fiftieths D.fiftieth 17.—How many friends will come to your______birthday party?—About______.A．fifteen；fifteen B．fifteenth；fifteenthC．fifteen；fifteenth D．fifteenth；fifteen18.The teacher was very angry because the boy made mistakes in hishomework．A．one B．fifth C．five19.—This is the time that I come to Paris．I have been here twice．—Me too．The world is so large that I want to see more of it．A．first B．second C.three D．third20.of the land in that district is covered with trees and grass．A．Fifth-two B．Two-fifthC．Fifth-second D．Two-fifthsst year，three hundred English teachers took part in the English training．A．two-month B．two-monthsC．two-months D．two-month22.—What's five and seven?—It's．A．twelve B．twenty C．thirty-five23.—How many American students came to visit your school yesterday?—Nine．Five are from New York，and the other are from Boston．A．two B．three C．four D．five24.of the girls will join in the Summer Camp to visit England．A．Three-fives B．Third-fifths C．Three-fifths25.During the May Day holiday，we stayed in a mountain village with__________trees around．A．thousand of B．thousandC．thousands D．thousands of26.It is said that students like to talk with friends online．A．two-thirds B．two-three C．two-third27.Two students to the opening ceremony last Friday．A．hundreds；were invited B．hundred：were invitedC．hundreds of；invited D．hundred of；invited28.Rose received a letter full of love from her parents on her __________birthday．A．sixteen B．sixteen's C．sixteenth D．sixteenths 29.people died because of the earthquake．A．Two thousands B．Thousand ofC．Two thousands of D．Thousands of30.No way!I don’t think should be allowed to drive．I am worriedabout your safety．A.fifteen years oldB.fifteen-year-old C．fifteen-year-olds一、1-4:DDCC5-8:CCBA二、1-5:BADAB6-10:BCBBD11-15:BCCAA16-20:BCBAC21-25:BBABB三、1-5:ABABB6-10:DABBA11-15:CDDAA16-20:ADCDD21-25:AACCD 26-30:ABCDB。
初中英语语法专题复习之数词语法英语数词语法是英语学习中非常重要的一部分，它涉及到数字的读法、写法以及数词的分类和使用。
在学习英语数词语法时，我们需要掌握基本的数词分类、基数词和序数词的用法，以及数词的单位和表示数量的单词。
一、英语数词的分类英语数词可以分为基数词和序数词两类。
基数词:表示数目多少的数词叫基数词，例如:“one”、“two”、“three”等。
基数词一般是单数形式，但以下情况，常用复数:a、与of短语连用，表示概数，不能与详细数目连用，如scores of。
序数词:表示顺序的数词叫序数词，例如:“first”、“second”、“third”等。
序数词一般是以-th结尾的形容词或名词的形式，例如“first”就是“第一”，“second”就是“第二”。
需要注意的是，有些数词既可以作为基数词，也可以作为序数词使用，例如“ten”可以作为基数词“ten”和序数词“tenth”使用。
另外，有些数词既可以表示数量，也可以表示顺序，例如“three”既可以表示“三个”，也可以表示“第三天”。
二、英语数词的用法英语数词在使用时有以下用法:表示数量:基数词可以表示数量的多少，例如:“one”表示“一个”，“two”表示“两个”，“three”表示“三个”等。
表示顺序:序数词可以表示顺序，例如:“first”表示“第一”，“second”表示“第二”，“third”表示“第三”等。
表示倍数:可以用基数词的倍数形式来表示倍数，例如:“two times”表示“两倍”，“three times”表示“三倍”等。
表示约数:可以用基数词的约数形式来表示约数，例如:“ten”表示“十个”，“twenty”表示“二十个”等。
表示价格:可以用基数词来表示价格，例如:“one dollar”表示“一美元”。
表示距离:可以用序数词来表示距离，例如:“fifth floor”表示“第五层”。
表示时数:可以用序数词来表示小时数，例如:“sixth hour”表示“第六小时”。
英语语法数词专题Company Document number：WUUT-WUUY-WBBGB-BWYTT-1982GT数词用法专题1.百位数和十位数之间，在英式英语中要用“and”连接，在美式英语中一般不用。
例：456：four hundred (and) fifty-six2.3.有关“零”的各种说法：zero：一般说法，在温度或数学上使用；nil/nothing：在运动比赛中使用；love：在网球比赛中专用；O（读音）：电话或数学用语；cipher：书面语，指符号而不指数目（有时指温度）。
例：零下 10 度：ten degrees below zeroThe result of the match was 5:0.（读作 five (goals to) nil）They won 3:0.（读作 three (to) nothing）Our team leads by 10:0 in the first tennis game.（读作 ten love）Dial 110.If you have no children, enter a cipher in the space on the form.The thermometer fell below cipher yesterday.4.在某些表示概数的习语中（如“成百上千”、“成千上万”等），基数词后要加“-s”。
例：thousands of studentsmillions of childrentens of thousands of people5.hundred of，thousand of，million of 等被 a few，some，several，many 等修饰，表示不确定数字时，用单复数形式均可。
例：a few thousand(s) of bookssome thousand(s) of soldiers（单用：some thousands）several hundred(s) of workers（单用：several hundred）many million(s) of birds（单用：many millions）6.表示“多少人组成一组，几个一起”时，基数词要用复数形式。
例：The students lined in fives.She counts them in eights.The guests came in twos.（相当于 two by two/two and two）7.“第一名”、“第二名”可用 first，second 表示，并且可用复数形式。
例：几个第 1 名：several firsts3 个第 2 名：three seconds8.在“several/many/基数词 + dozen + 名词”结构中，dozen 使用单数形式。
（当名词前有修饰性成分时，dozen 和名词之间要用 of（不可省略），即“several/many/基数词 + dozen + of + 修饰词 + 名词”，另外，score 的用法和 dozen 相同。
）例：several/many/six dozen eggsseveral/many/six dozen of white birdsseveral/many/six score eggsseveral/many/six score of white birdsI bought several dozen/score these desks. (×)I bought several dozen/score of these desks. (√)9.“(some) dozens/scores of + 复数名词”结构表示“好几十，很多”。
（some dozen/score (of) + …表示“大约 12/20 个...”）例：(some) dozens/scores of children几十个儿童（some 表示“一些”，对含义无影响）some dozen/score (of) children大约 12/20 个儿童（some 表示“大约”，对含义有影响）10.“a dozen + 复数名词”和“a score of + 复数名词”也可表示“很多”。
例：I have been there a dozen times.I have been there a score of times.11.基数词可以表示书页、住所、房间、教室、邮政编码、电话号码等的编号。
（电话号码通常以两个数字读为一组，中间有个小停顿，但以三个数字读为一组的情况也属常见，尤其是当电话号码为六位数或六位数以上时。
电话号码中两个重复的数字，常用 double。
）例：第 8 页：Page eight（P. 8）第 7 行：Line seven（L. 7）唐宁街 10 号：No. 10 Downing Street第 301 房间：Room (No.) 301第 4 教室：Classroom (No.) 4邮政编码：223805（读作：double six o, two three two, double eight）12.罗列几个并列的名词时，前面的若干个名词前用“不定冠词 + 序数词”结构，最后一个名词前用“定冠词 + 序数词”结构。
例：The old man has four daughters. One is a nurse, a second is a teacher, a third is a musician, and the fourth is a painter.13.2 倍：twice (AmE: two times)，double，duple，twofold，as … again as；3 倍：3 times，triple，treble，threefold；4 倍：quadruple，4 times，fourfold；5 倍：5 times，fivefold；依此类推。
（①double 可作 n/v/adj/adv。
②double/twice/three times/four times/…等表示倍数时，要放在定冠词、形容词形物主代词或名词所有格之前。
③treble可作 v/adj，通常可以和 triple 互换，但有时只能用 triple，如 the triple alliance。
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）例：You have paid twice/two times the usual price.You are twice/two times her/Jenny's age.Four is the double of two.（double 作名词）He doubled/trebled his income in 6 years.（double/treble 作动词）It is double the distance.（double 作形容词）The driver demanded double the usual fare.（double 作副词）Duple quantity of iron is needed for this project.The amount of alcohol in his blood was triple the legal maximum.They have produced twofold/threefold as many washers as they did last year.This river is as wider again as that one.He earns treble my salary.（treble 作副词）Treble salaries were paid.（treble 作形容词）I asked for a treble (portion of wine).（treble 作名词）20 is the quadruple of 5.（quadruple 作名词）Sales have quadrupled in the last 5 years.（quadruple 作动词）A quadruple alliance comes into being.（quadruple 作形容词）This year we produced quadruple that of last year.（quadruple 作副词）14.倍数比较的表示法：1)X times as + adj/adv（原级）+ as ... <划线部分>)例：My room is twice as long as hers.My room is half as long as hers.（倍表示法）My room is half as long again as hers.= My room is one and a half times as long as hers.（倍表示法）Jack runs 3 times as fast as Jim.They have twice as many planes as we have. （此句中是 n，不是 adj/adv！）2)X times + adj/adv（比较级）+ than …… <划线部分>)例：My room is twice longer than hers. = My room is as long again as hers.My room is half longer than hers.（倍表示法）My room is one and a half times longer than hers.（倍表示法）Jack runs 3 times faster than Jim.The cotton output is 20% greater than that of 2009.（此句中是 20%，不是倍数！）3)X times + the width (length, breadth, level, value, size, velocity) of …例：My room is twice the length of hers.My room is half the length of hers.（倍表示法）My room is one and a half times the length of hers.（倍表示法）The earth is 49 times the size of the moon.15.倍数增减的表示法：1)increase/exceed/speed up/step up/raise/rise/go up/grow/... + by + 百分数(X%)/倍数(X)；（A 增加了 X% ‖ A 增加为原来的 X 倍）例：Sales increased by 15%.The production of TV sets in the fourth quarter increase by 3 times.2) A be/multiply/increase/exceed/speed up/step up/raise/rise/go up/grow... + 数词(X) + times/fold；（A 是/增加为原来的 X 倍）例：Sales increased 3 times.The production of notebooks computers has been increased sixfold over/as against/as compared with that of 2005.3) A multiply X times & A be multiplied by + 数字；（A 增加为原来的 X 倍）例：Sales have been multiplied by 4 times.The production has multiplied 8 times.4) A increase/exceed/speed up/step up/raise/rise/go up/grow/decrease/drop/fall/weaken/shorten/reduce/step down/speed down/go down + by a factor of + 百分数(X%)/数词(X)；（A 增加/减少/...为原来的 X 倍）例：Sales have increased/decreased by a factor of 5.The speed exceeded (the average value) by a factor of 4.It raised by an (average) factor of 30%.5) A decrease/drop/fall/weaken/shorten/reduce/step down/speed down/go down + by +百分数(X%)/数词(X)/倍数(X)；（A 减少/下降/...了 X ‖ A 减少/下降/...为原来的 1/X）例：Sales have decreased by 5,000 RMB/3 times.The price of rice was reduced by 15%.6) A 黄色部分/绿色部分 to ...；（A 增加/减少到 ...）例：Sales increased/decreased to 50 million.The soldiers have increased to 1,000.7) A be + 倍数(X) + upon/over B；（A 是 B 的 X 倍）例：Sales was 3 times upon/over that of last year.I am twice upon/over your age.The number of college students for 2010 is 30 times over that for 1995.8) A be + 倍数(X) + what 从句；（A 是 ... 的 X 倍）例：Sales are 4 times what we had for the first quarter.The population is (more than) 3 times what it was in 1985.9) A be + 百分数(X%) + above/higher than B；（A 比 B 高 X%）例：Sales are 40% above/higher than that of last month.The export this month was 23% above/higher than that was achieved in May.10)A be up + 倍数(X)；（A 增加为原来的 X 倍）例：Sales (this month) was up 6 times.His income this month was up 3 times.The nation's grain output was up times.11)A show/register + 百分数(X%) + increase/decrease（名词）；（A 增加/减少了 X%）例：Sales in August registered/showed a 25% increase/decrease over March.12)A be + 百分数(X%)/数字(X) + less than B；（A 比 B 少 X%）例：Sales are 37% less than (that of) last month.The steel output this year is 10,000 tons less than in 2001.（注：by 常可省略，但 to 则不可省略）16.5 feet square 与 5 square feet 的区别：A table 5 feet square has an area of 25 square feet.17.“减少一半”的表示法：1)be half as many/much/long/fast/... as ...2)twice thinner than ...3)reduce/decrease/... by one half4)be one half less5)cut/break/split/... A in half/into halves6)half the (usual) price/speed/...18.概数的表示法：1)“over/above/more than + 数字”或“数字 + odd”2)below/under/less than + 数字3)“about/nearly/some/toward(s)/more or less + 数字”或“数字 + or so”（注：“数字 + more or less”和“more or less + 数字”等价）4)其它零散表示法。
