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数词1 数词的定义和种类表示数目多少或顺序先后的词叫做数词（numeral）。
数词与不定式代词很相似，其用法相当于名词与形容词。
数词有两种。
表示数目多少的数词叫做基数词（cardinal numeral），如one，ten，fifty-two 等。
表示顺序先后的数词叫做序数词（ordinal numeral），如first，tenth，fiftieth等。
2 基数词1）1-12的基数词是：one 1, two 2, three 3, four 4, five 5, six 6, seven 7, eight 8, nine 9, ten 10, eleven 11, twelve 12.13-19，皆由3-9加后缀-teen构成，即：thirteen 13, fourteen 14, fifteen 15, sixteen 16, seventeen 17, eighteen 18, nineteen 19. (注意thirteen，fifteen，eighteen的拼法)20-90等十位数均由2-9加加后缀-ty构成，即：twenty 20, thirty 30, forty 40, fifty 50, sixty 60, seventy 70, eighty 80, ninety 90.21-29由十位数20加个位数1-9构成，中间须有连字符“-”，即：twenty-one 21, twenty-two 22, twenty-three 23, twenty-four 24, twenty-five 25, twenty-six 26, twenty-seven 27, twenty-eight 28, twenty-nine 29.其它的十位数照些类推，如：thirty-one 31, forty- two 42, fifty-three 53, sixty- four 64, seventy-five 75, eighty-six 86,ninety-seven 97.2）百位数由1-9加hundred构成，如包含十位数及个位数，中间用and连接，也可以不用；如只包含个位数，即十位数为零时，则and不可省。
数词的用法一、概说数词是指表示数目多少或顺序先后的词。
表示数目多少的数词电基数词，如one, five, ten, thirty, sixty-five等；表示顺序先后的数词叫序数词，如first, sixth, tenth, twenty-first等。
数词与不定代词用法相似，在现代英语中，它与不定代词、冠词、指示代词、形容词性物主代词等被称之为限定词。
数词用法相当于名词和形容词，在句中可用作主语、宾语、表语、定语、同位语等。
二、基数词1.基数词的表示法(1)以下是最基本的基数词，学习者必须牢记：one(1), two(2), three(3), four(4), five(5), six(6), seven(7), eight(8), nine(9), ten(10), eleven(11), twelve(12), thirteen(13), fourteen(14), fifteen(15), sixteen(16), seventeen(17), eighteen(18), nineteen(19), twenty(20), thirty(30), forty(40), fifty(50), sixty(60), seventy(70), eighty(80), ninety(90), a hundred(100), a thousand(1000), a million(1000000), a billion (十亿)(2)21—99的表示法。
先说“几十”，再说“几”，中间加连字号：twenty-one(21),thirty-six(36), forty-five(45), ninety-nine(99)等。
(3)101—999的表示法。
先说“几百”，后接and，再加末尾两位数(或末位数)：one hundred and one(101), five hundred and thirty(530), seventy hundred and eighty-nine(789)(4)1000以上的基数词的表示法。
数词一．基数词：表示数目多少的词1---20 one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty从13开始，就有规律了，在后加teen.(除13和15有变动外)，teen 就表示十几。
eg: How many birds can you see?I can see three.二．序数词：表示顺序先后的数词1---20 first、second、third、forth、fifth、sixth、seventh、eighth、ninth、tenth. eleventh、twelfth、thirteenth、fourteenth、fifteenth、sixteenth、seventeentheighteenth、nineteenth、twentiethEg:She was the third to arrive.她是第三个到的。
三．日期的表示方法用英语表示日期，其顺序是月+日+年，日和年之间用逗号隔开。
如：2001年4月2日应该写成：April 2nd, 2001，或者Apr. 2nd, 2001 英语日期前介词的使用：若指在哪一年或哪一月，则用in,若具体到某一天，则用介词on四．英语时间通常用以下两种方法表达：1. 直接表达法A. 用基数词 + o'clock来表示整点，注意o'clock须用单数，可以省略。
如：eight o'clock 八点钟，ten (o'clock) 十点钟B. 用基数词按钟点 + 分钟的顺序直接写出时间。
如：eleven-o-five 十一点过五分， six forty六点四十2. 间接表达法A. 如果分钟数少于30分钟，可用分钟 + past + 钟点表示，其中past 是介词，意思是“过”。
初中英语语法大全：数词表示数目多少或顺序多少的词叫数词，数词分为基数词和序数词。
表示数目多少的数词叫基数词；表示顺序的数词叫序数词。
I基数词1.基数词的构成（1）1-20one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirteen,fourteen,fifteen, sixteen, seventeen, eighteen, nineteen, twenty （2）21-99 先说“几十”，再说“几”，中间加连字符。
23→twenty-three,34→thirty-four,45→forty—five,56→fifty-six,67→sixty-seven,78→seventy-eight,89→eighty-nine,91→ninety-one （3）101—999先说“几百”，再加and,再加末两位数或末位数；586→five hundred and eight y-six,803→eight hundred and three（4）l,000以上,先从右往左数，每三位数加一个“,”,第一个“,”前为thousand.第二个“,”前为million,第三个“,”前为billion（美式）或thousand ,million（英式）,然后一节一节地表示。
1,001→one thousand and one9,785→nine thousand, seven hundred and eighty-five18,423→eighteen thousand, fo ur hundred and twenty-three6,260,309→six million two hundred and sixty thousand three hundred and nine750,000,000,000→seven hundred and fifty, billion（美式）seven hundred and fifty thousand million（英式）2.基数词的用法（1）作主语eg.Four Of them come from Paris.（2）作宾语eg.一How many books would you like？一I would like two.（3）作表语eg.Seven minus two is five.（4）作定语eg.There are three people in my family•（5）作同位语eg. You two will go swimming with us.（6）表具体数字时,hundred, thousand ,million用单数。
数词1、定义:表示―数目多少‖和―顺序先后‖的词，叫数词。
2、分类：数词基数词表示―数目多少‖one，twenty 序数词表示―顺序先后‖first，twentieth3、基数词的构成（1）表示1-12的基数词：一个一个地记。
1 one;2 two;3 three;4 four;5 five;6 six;7 seven; 8 eight; 9 nine; 10 ten; 11 eleven; 12 twelve（2）表示13-19的基数词：由3、4、5、6、7、8、9词加上词尾-teen构成。
其中-teen表示ten。
*13= thirteen （thir=three）14=fourteen*15=fifteen (fif=five) 16=sixteen17=seventeen *18=eighteen (eigh=eight) 19=nineteen（3）表示―整十‖的基数词：由2、3、4、5、6、7、8、9的基数词加上词尾-ty构成。
其中-ty表示ten。
*20 twen ty (twen-=two) *30thir ty(thir--=three)*40for ty(for-=four) *50 fif ty (fif-=five)60 six ty70 seven ty*80 eigh ty (eight-=eight) 90 nine ty （4）表示―带零头‖的两位数。
eg. 21,35, 46, 57,63, 74, 85, 98等。
构成模式：表示―整十‖的基数词+ 连字符+ 表示1-9的基数词整十零头例如：21=20+1=twenty-one 35=30+5=thirty-five46=40+6=forty-six 57=50+7=fifty-seven（5）表示―三位数以上‖的基数词。
1）要用到单位数词billion（十亿），million（百万）、thousand（千）、hundred（百）。
专题一数词一.概述表示―多少‖或―第几‖的词叫做数词。
数词分为基数词和序数词。
基数词：表示―多少‖的词。
如：one ，two ，three序数词：表示―第几‖的词。
如：first ，second ，third单词复习：数词（numbers）：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thirteen十三fourteen十四fifteen十五sixteen十六seventeen十七eighteen十八nineteen十九twenty二十thirty三十forty四十fifty五十sixty六十seventy七十eighty八十ninety九十forty-two四十二hundred百one/a hundred and thirty-six一百三十六first第一second第二third第三fourth第四fifth第五eighth第八ninth第九twelfth第十二twentieth第二十thirtieth第三十fortieth第四十fiftieth第五十sixtieth第六十seventieth第七十eightieth第八十ninetieth第九十fifty-sixth第五十六句型复习：单纯数字运用（基数词与序数词）1. A: How old are you? 你几岁啦？B: I’m nine. / I’m 12 years old. 我九岁了。
2. Our lucky number is 6.3. —What size? —Size five.4. A: How do you do that? B: First, dig holes. Second, put the trees. .A: What should you do then? B: Water it.谈论价格1.A: How much is it? B: It’s ten yuan.A: How much are they? B: They’re three yuan.2. A: How much is that /this colourful dress? B: Very expensive. It’s ninety-nine yuan.A: How much are your jeans? They’re 30 yuan.问数量：1. A: How many balloons\ gifts? 多少个气球\礼物？B: Four \ ten. 四／十。
数词（一）基数词：表示数目的词为基数词(1) 1~12 : one, two, three, four, five, six, seven, eight, nine, ten, eleven , twelve(2) 13~19 以teen为结尾: thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen(3) 20~90 以ty结尾: twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety(4) 21~99 十位与个位之间要加连字符“-”: twenty-one, sixty-five, ninety-nine(5) 101~999 百位与十位之间通常用and:three hundred and twenty-five（美语中常将and省略）one hundred and six(6)千thousand 百万million 十亿billion3000 three thousand30,000 thirty thousand300,000 three hundred thousand3,000,000 three million30,000,000 thirty million300,000,000 three hundred million3,000,000,000 three billion6,275 six thousand two hundred and seventy-five；1,200 one thousand two hundred12,405 twelve thousand four hundred and five（二）序数词：表示顺序的数词为序数词(1) 1~19: 各基数词尾加th, 例外：first, second, third, fifth, eighth, ninth, twelfth,其余：four — fourth, six — sixth, nineteen — nineteenth (2) 20,30~90: 把y变i后加eth：twenty—twentieth thirty—thirtiethforty—fortieth ninety—ninetieth(3) 21以后多位数: 最后一个数用序数词，其余用基数：twenty-one — twenty-first one hundred and ten — one hundred and tenth（三）数词的用法：(1) 2001. 6. 30 June 30,2001 / June 30th, 2001(2) 7：25seven twenty-five twenty-five past seven(3) 12:54 twelve fifty four / six to one(4) 9:15 nine fifteen / a quarter past nine(5) 2:30 two thirty / half past two(6) 21:50 twenty-one fifty / 9:50p.m.(7)第21 t wenty-first(8)第123 one hundred and twenty-third(9) 1/2 a half(10) 2and 2/5 two and two-fifths (11) 20% 20 per cent / 20 percent(12)第七路公共汽车B us Number Seven /No. 7 Bus(13)第201房间Room 201(14)人民路153号153 Renmin Road(15) 4+8 =12 Four plus eight is twelve(16) 11-7=4 Eleven minus seven is four.(17) 6×5=30 Six times five is thirty.(18) 20÷5=4 twenty divided by five is four.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.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.nearly She is nearly fifty now.almost Its almost three o'clock.up to Up to ten men can 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 lesstwenty pounds of water. around/round Let's make it round/around eight o'clock.nearly She is nearly fifty now.almost Its almost three o'clock.up to Up to ten men can 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.修饰可数名词dozens of几十、许多scores of许多many, a good (great) many许多、大量hundreds of数以百计thousands of 成千上万millions of数百万billions of亿万修饰不可数名词much , a great (good) deal of , a large amount of , large amounts of许多、大量修饰可数名词或不可数名词a lot of /lots of ,plenty of许多、大量。
数词范围特点实例1~12 无规律one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve13~19 以teen为结尾thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen20~90 以ty结尾twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety21~99 十位与个位之间要加连字符“-” twenty-five, sixty-five, ninety-nine101~999 百位与十位之间通常用and three hundred and twenty-five（美语中常将and省略）千以上6275—six thousand two hundred and seventy-five；1200—twelve hundred（二）序数词：表示顺序的数词为序数词，它的构成如下表：范围特点实例1~19 各基数词尾加th 其中七个例外：first, second, third, fifth, eighth, ninth, twelfth, 其余，如：four — forth, six — sixth, nineteen — nineteenth20,30~90 把y变i后加eth twentieth, fortieth, ninetieth21以后多位数最后一个数用序数词，其余用基数词21st —twenty-first, 110th —one hundred and tenth（三）数词的用法：1.英语中年月日、点钟、序数词、分数词、算式列表示例英语表示法2001．6．30 June 30,2001 30June,2001 30thJune, 20017：25 seven twenty-five twenty-five past even12:54 twelve fifty four six to one9:15 nine fifteen a quarter past nine2:30 two thirty half past two21:50 twenty-one fifty 9:50p.m.第21 twenty-first第123 one hundred and twenty-thirda halftwo and two-fifths20% 20 per cent 20 percent第七路公共汽车Bus Number Seven第201房间Room 201人民路153号153 Renmin Road4+8 =12 Four plus eight is twelve11-7=4 Eleven minus seven is four.6×5=30 Six times five is thirty.20÷5=4 twenty divided by five is four.A＞B A is more than B.A＜B A is less than B.A≈B A is approximately (近似地, 大约)equals to B.A≠B A is not equal to B.2.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 can sleep in this tent.or He spent four or five days writing the article.or so The distance is twenty miles or so.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.3.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dozens of 几十、许多scores of 许多many, a good(great) many, many a (饰单数可数名词) 许多、大量hundreds of 数以百计thousands of ,thousands upon thousands of 成千上万millions of 数百万billions of 亿万修饰不可数名词much , a great (good)deal of ,a large amount of ,large amounts of 许多、大量修饰可数名词或不可数名词 a lot of /lots of ,plenty of, a large quantity of ,large quantities of 许多、大量练习、数词1. Two __died of cold last winter.A. hundreds old peopleB. hundred old peopleC. hundreds old peoplesD. hundred old peoples2. He was only in__ at the time.A. his 20'sB. the 20'sC. his twentiesD. the twenties3. The two great men wrote those letters in__ .A. 1870'sB. 1879sC. the 1870'sD. the 18704. I wonder if I can ask him__ time.A. fourB. fourthC. the fourthD. a fourth5. He came out__ in the track events.A. firstB. oneC. the firstD. the one6. It was in 1939 that __broke out.A. World War SecondB. the World War SecondC. Second World WarD. World War II7. You'll have to spend __writing your report here.A. one day or two daysB. one day or twoC. a day or twoD. two days or one8. He cut the cake__ .A. in halvesB. in halfC. into halvesD. into half9. The earth is nearly__ the moon.A. 50 time the size ofB. 50 times the size ofC. 50 times as size asD. 50 times as that of10. Either you or the headmaster __the prizes for these gifted students at the meeting.A. is handing inB. are to hand outC. are handing inD. is to hand out11. __of the population here are peasants.A. 20 percentsB. 20 percentC. the 20 percentD. the 20 percents12. It's about__ , the thickness of a human hair.A. two-fifteenthB. two-fifteenthsC. two fifteenD. two fifteens13. The price of such material was reduced__ .A. by 18 percentB. to 18 percentC. at 18 percentD. for 18 percent14. South of the equator, 81 percent of the surface of the earth__ water.A. isB. areC. wasD. were15. They sold __boxes of such sweets last week.A. four dozenB. four dozensC. four dozens ofD. four dozen of16. It took me __ days to finish drawing a beautiful horse.A. a half dozenB. half a dozenC. haft dozensD. half dozen17.__people were sent there to help fight against the flood.A. Three scores ofB. Three score ofC. Three scoreD. Three scores18. Don't leave you work,__ .A. done halfB. half doneC. a half doneD. done a half19. Nobody can do two things well __ .A. at one timeB. at onceC. one timeD. once20. He has__ books in his study.A. several thousandsB. some thousands ofC. some thousandsD. some thousand of21. On National day__ people take part in all kinds of celebration.A. hundreds of millions ofB. millions of hundred ofC. hundreds millions ofD. millions hundreds of22. He has lived at__ for 30 years.A. No. 101 Heping StreetB. 101 Heping StreetC. Heping Street 101D. Heping street No. 10123. You can find him in__ .A. Room 201B.201 RoomC. the Room 20D. the 201 Room24. It's__ walk from here to my school.A. two - hoursB. two hoursC. two - hourD. a two - hour25. It was in__ when he was already in ___ that he went to Yan'an.A. the 1940s, the 40sB. the 1940s, his fortiesC. 1940's, his fortiesD. the 1940's, his 40s26. He went to the market and bought __eggs and some meat.A. three dozen ofB. three dozenC. three dozensD. three dozens of27.Shortly after the accident two ___police were sent to the spot to keep order.A. dozen ofB. dozensC. dozenD. dozens of (MET92 29)28.Mr Smith ___me to buy several __eggs for the dinner.A. asked, dozenB. suggested, dozens ofC. had, dozenD. persuaded, dozens of ('94上海)29.____of the land in that district ___covered with trees and grass.A. Two fifth, isB. Two fifth, areC. Two fifths , isD. Two fifths, are (2000上海)30.Two ___died of cold last winter.A. hundreds old peopleB. hundred old peopleC. hundred old peoplesD. hundred old peoples ('88MET.15)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, their ('99上海6)32.-Have you seen many sheep in the distance ? -Yes, ___.A. thousand of themB. two thousands of themC. two thousand of themD. two thousand them1．B2. C 表示"几十"的数字的复数与所有格代词一起来用以表示人的年龄，本句为"二十多岁"。
