数词讲解
数词讲解
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。
数词用法讲解及练习
数词I.定义与分类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叫基数词，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。
II. 基数词1. 英语中没有“万”这个读数单位，要表示汉语中的“万”，英语需借用thousand一词，如“一万”用“十个千”表示(ten thousand)，“十万”用“一百个千”表示(one hundred thousand)。
2. 用作基数词单位的hundred, thousand, million, billion 通常不带复数词尾-s，但若用于表示数百、数千、数百万这样的泛指，则用复数。
如：About two thousand people died in the earthquake. 大约有两千人在地震中丧生。
Thousands of people go to the seaside every year. 每年成千上万的人到海滨去。
3. 表示整十的基数词用复数形式可以表示人的大约岁数或年代。
如：He is in his early twenties. 他才二十出头(from 。
This took place in the 1930s. 这事发生在20世纪30年代。
III. 序数词1. 许多序数词是由相应的基数词后加词尾-th构成的，如four / fourth，six / sixth，ten / tenth，sixteen / sixteenth，但是nine变为序数词是ninth，而不是nineth。
2. twentieth, thirtieth, fortieth 等表示整十的序数词，由相应的基数词将词尾y改为ie，再加-th 构成。
3. first, second, third 通常可缩写为1st, 2nd, 3rd。
高三英语语法讲解 专题13 数词
一.概念:数词分两类:基数词和序数词.表示数目的词叫基数词,表示须序的词叫序数词.二.要点精讲1.基数词1）基数词一般可写成如345或three hundred and forty-five。
2）基数词一般是单数形式，但遇下列情况，常用复数：a. 与of 短语连用，表示概数，不能与具体数目连用，如scores of people 指许多人；b. 在一些表示"一排"或"一组"的词组里。
例如：They arrived in twos and threes. 他们三三两两的到了。
c. 表示"几十岁"。
d.表示"年代"，用 in +the +数词复数。
e. 在乘法运算的一种表示法里，如Three fives is（are）fifteen。
三.即学即练1.______ martyrs have heroically lai d down their liv e s for the people.a. Th ousand upon thousand ofb. Thousand and thousands ofc. Thousands upon thousands ofd. Thousand and thous and of2.They received ______ of let ters about their TV programs.a. dozenb. dozen and dozen c score d. dozen s3.Wh o is that man,______ in the front row?a. oneb. the onec. firstd. the first7.The moon is about _____ in diameter as diameter a s the earth.a. one-three as largeb. one three as largec. one-third as larged. one third as large。
小学语法复习讲解--数词
数词一、数词的概念：表示数量和顺序的词叫数词。
二、数词的分类：数词分为基数词和序数词。
基数词表示数目。
序数词表示顺序。
123. 序数词的构成：把基数词变为序数词时，请按下面的口诀记忆：三、数词的基本用法：a. 基数词的用法:1. 表示房间、电话、门牌等的号码。
例如：电话号码：7521346: seven five two one three four six102房间：Room One O Two 11路公共汽车：No. Eleven Bus2. 表示年代、年龄、时刻等。
例如：1998年：nineteen ninety-eight(先读前两位，再读后两位)2009年：two thousand and nine 12岁：twelve years old8:00: eight/eight o’ciock 1:30: one thirty 2:40: two forty 3:45: three forty-five★时间和日期的表达有两种时间表达法：A）直接读写数词。
如：9:15 nine fifteen 10:30 ten thirty 11:45 eleven forty-five7:05 seven o five 2:25 two twenty-five 5:55 five fifty-fiveB）借助past和to来表达。
past一般用于30分钟以内（含30分钟）的时间表达；to一般用于超过30分钟的时间表达。
一刻钟可以用a quarter表示，半小时可以用half表示。
如：9:15 a quarter past nine 10:30 half past ten 11:45 a quarter to twelve1. 表示顺序时用序数词，前面要加上定冠词the.例如：January is the first month of a year.(一月是一年中的第一个月)2. 表示日期时按月、日、年或日、月、年的顺序来表示，日子习惯上用序数词来表示。
小学英语数词讲解与练习题
数词专练数词是表示数量多少或顺序先后的词。
分为基数词和序数词。
一. 基数词1. 表示数量多少的词是基数词,如：one，two, three等。
2. 数词的构成1）从1－12分别由从one到twelve，12个各不相同的词表示。
one, two，three, four，five，six，seven，eight, nine, ten，eleven, twelve2）从13－19均以后缀—teen结尾。
thirteen, fourteen, fifteen, sixteen，seventeen, eighteen，nineteen3）从20－90的整十数词均以后缀-ty结尾。
表示“几十几”时，个位和十位之间需加连字符。
twenty, thirty, forty, fifty, sixty, seventy，eighty, ninety21 twenty-one 32 thirty—two 43 forty-three4）整百数由1—9加hundred构成。
100 one （a) hundred 500 five hundred5）整百数和整十数之间由and连接,十位与个位之间要加连字符“-”.如果十位数为零，那就在百位和个位之间用and连接。
101 one hundred and two 245 two hundred and forty— five6）1,000以上的数，要用计数逗点,即从个位开始,每隔三位数加一逗点,第一个逗点处是thousand（千），第二逗点处是million(百万) 例如：1，000→a（one)thousand4,596→fo ur thousand five hundred and ninety-six10，000→ten thousand18，261→eighteen thousand two hundred and sixty—one100,000→a(one）hundred thousand766,132→seven hundred and sixty-six thousand one hundred and thirty—twoExercise：写出下列数字12 14 2040 90 19400 60035 78305 678二、序数词序数词表示排列顺序,如first，second, third等。
中考数词讲解
数词讲解一.数词分为基数词和序数词两种，基数词表数目，序数词表顺序。
基本构成（一）基数词——从1数到N1.1—12的基数词是独立的单词，即：one，two，three，four，five，six，seven，eight，nine，ten，eleven，twelve.2.13—19的基数词以-teen结尾。
如：fourteen，seventeen等，但13，15，18较特殊，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较特殊，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—one hundred and forty-eight，406—four hundred and six.6.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s.如：600—six hundred, 8百万—eight million.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＝two thousand five hundred and ten；84，296＝eighty-four thousand two hundred and ninety-six；274，350＝two hundred and seventy-four thousand three hundred and fifty.8.hundred，thousand，million用复数形式修饰名词时要用―of＋复数名词‖，如：数以百计的年轻人hundreds of young people；数以千计的书thousands of books.注意：hundreds of／thousands of／millions of ＋复数名词，其前面不能加具体的数词，但可加several或many.Hundreds of new buildings have sprung up here this year.Thousands upon thousands of people in South Africa are rising against their oppressors.Thousands and thousands of people come to visit the city every day.（二）序数词——由基数词转变而来，表示―这是第N个‖1.口诀巧记基数词变序数词：―一、二、三，特殊记，八去‖t―，九去‖e―，‖ve―要用‖f―替，见‖y―变成‖i―和‖e―，词尾加上‖th―，若是遇到几十几，只变个位就可以。
初一英语数词语法知识总结(讲解+考点+综合练习)：数 词
第四章数词一、数词概述1、数词的定义：表示数目多少或顺序先后的词为数词。
2、数词的分类：数词可分为基数词和序数词，基数词表示数量的多少，序数词表示顺序的先后。
二、数词考点纵览三、综合练习( ) 1. Lincoln was born on ________.A. February 12th, 1809B. 1809, February 12thC. 1809, 12th FebruaryD. February 1809,12th( ) 2. A _______ boy can sing the English song very well.A. ten-years-oldB. ten years oldC. ten-year-oldD. ten year old ( ) 3. An hour later, _____ minister was sent to see the “magic cloth” woven by those two men.A. twoB. the secondC. the twoD. second( ) 4. Abraham Lincoln was _______ President of the United States.A. 16B. the 16C. 16thD. the 16th( ) 5. Do you think there is any room for us ________ ?A. twoB. the twoC. secondD. the second ( ) 6. ---How many students are there in your class?---________.A. Twenty nineB. Thirty and twoC. Forty-fiveD. fifties( ) 7. Which number is wrong? _______.A. NinetyB. NinteenC. NinthD. Nineteenth ( ) 8. The People’s Liberation Army was founded _______.A. on August 1st, 1927B. in 1927, 1 AugustC. on 1st August , 1927D. in August 1, 1927( ) 9. The number 4,123 is read _______.A. four thousand one hundred and twenty-threeB. four thousand and one hundred twenty-threeC. four thousand and a hundred and twenty-threeD. four thousands a hundred and twenty-three( ) 10. The old professor still works hard though he is _________.A. in his sixtyB. in his sixtiesC. in sixtiesD. in the sixty ( ) 11. This classroom is ________ ours.A. three times big asB. as three times big asC. three times as big asD. as big three times as( ) 12. The basketball team of our school ranks ________ in the match.A. threeB. thirdC. the threeD. the third( ) 13. Which is the car that he drives? It’s ________.A. fifty twoB. the fifty-two carsC. the car fifty fourD. the fifty-fourth car( ) 14. Which of the following is wrong? ________.A. He is a fifteen-year-old boyB. He is at the age of 15C. He is a boy of 15D. He is fifteen year old( ) 15. Our school is not very big. There are only ________ students.A. nine hundreds ofB. nine hundredC. nine hundredsD. nine hundred of( ) 16. ---How many new words are there in ________ lesson?---There are only _________.A. five; fifthB. fifth; fiveC. the fifth; the fiveD. the fifth; five( ) 17. ________of the students go to school by car.A. Two threeB. Two thirdC. Second thirdsD. Two thirds ( ) 18. There was no bus in that small town. We had a ________.A. ten miles walkB. ten-mile walkC. ten mile’s walkD. tenth mile walk( ) 19. Today is the first day and ________.A. Tuesday is fourthB. Thursday is the fourthC. second is TuesdayD. a second is Thursday( ) 20. Which room do you live in? ________.A. 201 RoomB. Room 201C. Room 201stD. 201’s Room( ) 21. How many magazines do you have? I have ________.A. twoB. bothC. twiceD. the second ( ) 22. Three hundred thousand one hundred and seventy means ________.A. 3,170B. 3,117C. 300,170D. 30,170 ( ) 23. On May ________, ________ people traveled round the country.A. the first, millionsB. the first, millions ofC. first, the millionthD. first, millions( ) 24. ________ of them are dining at school.A. TwelveB. TwelfthC. The twelveD. The 12th ( ) 25. It’s 7:17 is read ________.A. seven and seventeenB. seven sevenC. seven one sevenD. seven seventeen( ) 26. Four ________ two is two.A. plusB. minusC. timesD. divided by ( ) 27. Three ________ five is eight.A. plusB. minusC. timesD. divided by ( ) 28. Three ________ seven is twenty-one.A. plusB. minusC. timesD. divided by ( ) 29. Forty-two ________ seven is six.A. plusB. minusC. timesD. divided by ( ) 30. There are ________ days in a year.A. three hundred sixty and fiveB. three hundred and sixty-fiveC. three hundreds and sixty-fiveD. three hundred sixty-five( ) 31. There are ________ students in that school.A. two thousand eight-sixB. two thousand eighty-sixC. two thousand and eighty-sixD. two thousands and eighty-six( ) 32. It took me ________ to get there.A. two hours and a halfB. two hours and halfC. two hour and a halfD. two hour and half( ) 33. September is _________ month of the year.A. the ninethB. the ninthC. ninethD. ninth ( ) 34. Please pass me _______ book on the left.A. thirdB. threeC. the thirdD. the three ( ) 35. ________ boy is very tall .A. The twelveB. The twelvethC. The twelfethD. The twelfth( ) 36. We have known each other for ________.A. a year and halfB. a year with halfC. a year and a halfD. a year with a half( ) 37. ---What year is it?---It’s ________.A. nineteen hundreds and ninety-sevenB. nineteen and ninety-sevenC. nineteen ninety and sevenD. nineteen ninety-seven( ) 38. ---What’s the date today?---It’s _________.A. TuesdayB. June FourthC. June the fourD. June the fourth ( ) 39. The train from Shanghai will arrive ________.A. in quarter past sixB. in a quarter past sixC. at quarter past sixD. at a quarter past six( ) 40. My friend was born on _________.A. three of July, 1979B. the third of July,1979C. 1979, July the thirdD. 1979, the third of July( ) 41. ________ is less than ________.A. One third; two thirdsB. One third; two thirdC. First three; first threesD. One third; one three( ) 42. Which lesson did you learn yesterday? ________.A. Lesson SevenB. Lesson seventhC. The seven LessonD. Lesson seven( ) 43. “What’s the date today?” “It’s _______.”A. fourth MayB. the fourth MayC. May fourD. May the fourth ( ) 44. 334 is read ________.A. three hundreds and thirty fourB. three hundreds thirty fourC. three hundred and thirty fourthD. three hundred and thirty-four( ) 45. In February, there are only _________ days.A. twenty nineB. twenty-ninethC. twenty-nineD. twenty eight ( ) 46. There will be a comedy on TV at ________ this evening.A. seven past thirtyB. half past sevenC. seven the thirtyD. thirty to seven ( ) 47. It took me ________ to find out the key to the drawer.A. one and half hoursB. one and a half hoursC. one and a half hourD. one and half hour( ) 48. I’m so tired after ________ walk.A. three hoursB. three hours’C. three hour’sD. three hour ( ) 49. There are ________ stars in the sky.A. million ofB. millions ofC. the millionD. a million of ( ) 50. The street is ________ wide.A. two metersB. two meterC. the two meterD. a two meter参考答案1.A2. C3. B4. D5. A6. C7. B8. A9. A 10. B 11.C 12. D 13. D 14. D 15. B 16. D 17. D 18. B 19. B20. B 21. A 22. C 23. B 24. A 25. D 26. B 27. A 28. C29. D 30. B 31. C 32. A 33. B 34. C 35. D 36. C 37. D38. D 39. D 40. B 41. A 42. A 43. D 44. D 45. C 46. B47. B 48. B 49. B 50. A文档说明(Word文档可以删除编辑)专注于精品文档：中考、高考、数学语文英语试卷、高中复习题目、小学试卷教案合同协议施工组织设计、期中、期末等测试，本文档目的是为了节省读者的工作时间，提高读者的工作效率，读者可以放心下载文档进行编辑使用.文档来源网络改编，审核有可能疏忽，如果有错误或侵权，请联系本店马上删除。
数词的讲解
英语基础知识数词的讲解与训练（2）序数词的句法功能。
序数词在句中可作主语、宾语、定语和表语。
The second is what I really need.（作主语）He choose the second.（作宾语）We are to carry out the first plan．（作定语）疑难突破数词的用法：表达时刻A.表示几点钟用基数词加可以省略的o’clock 5:00读作five o’clock或five 。
B.表示几点过几分。
在分钟后加past，再加小时 five past seven 七点过五分。
half past six 六点半。
a quarter past eight 八点过一刻。
C.表示几点差几分。
在分钟后面加to，再加小时 ten to eight 差十分八点。
a quarter to twelve 十二点差一刻。
在日常生活中，常用下列简单方法表示时间。
以小时、分种为单位分别读出数字。
6:31读作six thirty-one。
10:26读作ten twenty-six。
14:03 读作fourteen o three 。
16:15 读作sixteen fifteen。
18:30 读作eighteen thirty 23:55 读作twenty-three fifty-five。
注：时刻表上的时间大多采用24小时表示法，这样就不需要用a.m.表示上午，p.m.表示下午了。
表达年月A. 世纪可以用定冠词加序数词加世纪century表示，也可以用定冠词加百位进数加/’s表示 the sixth（6th）century 公元六世纪。
the eighteenth（18th）century 公元十八世纪。
B. 年代用定冠词及基数词表示的世纪加十位整数的复数形式构成in the 1930s /’s（in the thirties of the twentieth century或in the nineteen thirties）在二十世纪三十年代。
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数词
1.定义与分类：数词是用来表示事物的数目和顺序的词，表示多少的词叫做基数词，one two three four 表示第几的词叫做序数词first second third fourth fifth sixth 等等。
2.作用：主语 宾语 表语 定语 状语 同位语 It is six there are six book Six is ok I want to buy six We six always get up early at six 注意数次作定语的用法:数词+名词（单数）+形容词 a five-year old girl
3.基数词的构成及其用法 英语中最基本的基数词有：
（2）其他基数词的构成
1）21-99十位个位之间要加连词符号（-）
2）101--999等三位数中十位数或个位数的前面加and . 101 one hundred and one 513 five hundred and thirteen 678 six hundred and seventy-eight
3）1000以上的数要用计数逗点，从个位开始每个三位数加一个逗点。
1
2 3 4 5 6 7 8 9 10 11 12 one two three four five six seven eight nine ten eleven twelve
13 14 15 16 17 18 19
thirteen fourteen fifteen sixteen seventeen eighteen nineteen
20 30 40 50 60 70 80 90 100
twenty thirty forty fifty sixty seventy eighty ninety
one(a) hundred
23 35 101
twenty-three
thirty-five
one hundred and one
第一个逗点处是thousand 第二个逗点是百万million 第三个逗点处是十亿billion 。
1，000 4,596,786 18,458 怎么读？？怎么写？？
4）基数词常以单数出现但是当基数词用作名词时可有复数形式。
She has got three fives
数词hundred thousand million 前面有数词时表示确数不用复数形式，但是其后接of 短语所表示的一个约数时用复数形式。
Three hundred desks hundreds of desks
6)dozen 表示一打（12个）和 score （20个）也是一个量的单位，其前有具体的数字或者several 修饰时也不可加s 表示一个确数 ，但是当他们不与具体的数词或several 连用的时候要用复数表示约数。
Three dozen books dozens of books
4.序数词的构成及其用法
（1）一般序数词
1000th →one thousandth, 1000000th →one millionth., 第703→the seven hundred and third,
第5480→the five thousand four hundred and eightieth.
1st
2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th
※first
※second ※third fourth fifth sixth seventh eighth ninth
tenth
eleventh
twelfth
13th 14th 15th 16th 17th 18th 19th thirteenth fourteenth fifteenth sixteenth seventeent h eighteenth nineteenth 20th
30th 40th
50th 60th 70th 80th
90th
100th twentieth thirtieth fortieth fiftieth sixtieth seventieth eightieth ninetieth one undredth 21st 22nd 23rd 35th 101st
twenty-first twenty-second twenty-third
thirty-fifth
one hundred and first
（2）两位以上的序数词仅个位数部分用序数词,其余部分仍用基数词。
如：thirty-sixth, forty-fifth
（3）使用序数词时一般加定冠词the. 如：I’m in the third grade. （4）序数词前有不定冠词a 表示再一又一的意思
A second time a third one
After eating two cakes ,he ate a third one .
5.分数的构成和用法
分子用基数词，分母用序数词，分子是1时分母用单数，分子是2 时分母用复数。
1/2可以用half 表示，四分之一可以用quarter表示。
读带分数时，先读整数部分，再读分数部分，中间用and 连接。
1/5→one fifth ; 2/3→two thirds ; 4/7→four sevenths ; 1/2→a half ; 1/4→a quarter ; 3/4→three quarters ; 50%→fifty hundredths ( fifty per cent).32⅜ thirty-two and three eighths
6.小数的构成及用法
整数与小数之间用小数点隔开，读小数时每位数字要单独读出，小数点读point 0读zero 。
0.1 zero point one 0.03 zero point zero three 2.25 two point two five 14.163 fourteen point one six three
注意：1）和带分数连用的名词用复数
2）如果带分数的整数部分是1 名词在带分数之后用复数，名词在1和分数之间时，名词要用单数。
One apple and a third one and one third apples .
3）与小数连用的名词，整数是零时名词用单数，其他情况名词要用复数。
7.百分数的构成和用法
5% 5 per cent 22% twenty-three per cent
8.倍数的构成及其用法
1）倍数的表达法
2倍twice double 3倍three times triple 4 倍及以上：基数词+times
2）倍数比较的表达法
a A be数+as+原级adj adv +asB This desk is as big as that one .
b A be 数+times + 比较级+ than B This desk is three times bigger than that one .
c A be 数times +the +n（length height size weight breadth value ）of B This desk is three times the size of that one .
3）倍数增减的表达法increase go up rise grow decrease reduce drop fall go down 等词后面+by 表示增减了多少+to 表示增建到多少The members have increased by 1,000. to 1,000.
9.每隔每逢的表达法
Every +基数词+复数名词every +序数词+单数名词
Every three days every fourth day 每逢四天每隔三天
10.数字运算的表达法
加读and plus 减读minus 乘读times 除读divided by 等于读equals one and one equals two ten divided by five equals two
11.时间的表达法
（1）先说分钟后说点钟，几点过几分，分钟不超过30 时用past 几点差几分或差几分几点，差的分钟不超过30分钟时用to。
It is five past seven . It is twenty to five .it is a quarter to five.
（2）年月日地表达法：一般情况下先说月份，再说日期，最后说年份但亦有例外，并且日期要用序数词。
1988年5月1日的表达法May 1(st),1988,读法：May the first ,nineteen eighty-eight.1983 nineteen eighty-three.
1)年份的读法两位两位的读。
2）公元前的年份后面加B.C公元后的年份后面加A.D
221.B.C two twenty-one 199.A.D A.D.199
3)年代用年份的阿拉伯数字后+’s或s构成
1730’s 或1730s十八世纪三十年代the seventeen thirties
二十世纪六十年代中期the mid 1960's或s
12.编号及电话号码的表达法
编号既可以用序数词也可以用基数词：the Tenth Lesson Lesson Ten
Room 321 读法：room three two one
13.某人几十岁和十几岁的表达法
几十岁：In +one's +数词几十的复数形式
The man is in his early thirties .
十几岁：in +one's teens。