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。
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。
数词讲解
（二）序数词 1. 1～3的序数词及缩写形式 第一 ____fi_r_st____（__1_st__） 第二 ___s_e_co_n__d__（__2_n_d_） 第三 ____th_i_r_d___（__3_rd__）
2. 4～19的序数词及缩写形式 第四 ___f_o_u_rt_h___（_4__th__） 第六 ____s_ix_t_h___（__6_th__） 第八 ___e_i_g_h_th___（__8_th__） 第十____t_e_n_th___（__1_0_th_） 第十二 ___tw__e_lf_t_h__（_1_2_t_h_） 第十四 _f_o_u_r_te_e_n_t_h_（_1_4_t_h_） 第十六 __s_ix_t_e_e_n_th__（_1_6_t_h_） 第十八 _e_i_g_h_te_e_n__th_（_1_8_t_h_）
5. 基数词变序数词的规律 基数词变序数词有一定的规律，口诀如下：
基变序，有规律，词尾加上-th； 一、二、三，特殊记，词尾字母t、d、d； 八去t，九去e，ve要用f替； ty将y变成i，th前面有个e； 要是碰到几十几，前用基来后用序。
1. 表示数学运算时，用基数词。如： 4＋6＝10 Four and/plus six is ten. 9－6＝3 Nine minus six is three. 2×7＝14 Two times seven is fourteen. 15÷5＝3 Fifteen divided by five is three.
答案：1. A 2. B
举一反三
一、Read and choose. 单项填空。
（A）1. The reading room is on the __________ .
数词的用法 知识讲解
数词的用法【概念引入】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。
【用法讲解】一、基数词。
1. 基数词的写法或读法。
（1）对于20以内的基本的数字，需要同学们牢记。
要注意其中的一些规律。
例如：13-19的数字都是“-teen”结尾等。
（2）十位数与个位数之间要加连字符。
例如：23→twenty-three（3）百位数与个位数之间要加and。
例如：201→ two hundred and one 642→ six hundred and forty-two 拓展：除此之外，较大的数字是将数字由右向左每三位加一个逗号，使一个数字分成几个小节，第一个逗号前用thousand（千），第二个逗号前用million（百万），第三个逗号前用billion（十亿），然后依次读出（写出）。
例如：68,343 sixty-eight thousand, three hundred and forty-three13, 526, 300 thirteen million, five hundred and twenty-six thousand, three hundred 注意：英语中没有“万”和“亿”这两个单位，只有“百万（million）”和“十亿（billion）”；因此“一万”是用10个千，也就是“ten thousand”来表示的，“一亿”是用“one hundred million”来表示的。
2. 基数词的用法（1）表示确切数目时，hundred，thousand和million只能用单数，不能变复数；但表示不确定的数目时，要用复数形式，并且要加上of。
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7、 dozen, score, hundred, thousand, million 用法要点
这些词的用法极为相似，需注意的用法有：
①当这些词与具体数字连用时，通常不加复数词 尾-s, 也不后接介词 of。如：
three score eggs.
a man of three score years.
5、年龄\年代表达法 ①表示在某个世纪的几十年代，用“in the +逢十 的基数词的复数”。基数词的复数若用阿拉伯数 字表示，可直接加s，也可加’s。如： in the nineties/90s/90’s ②表示某人几十多岁这样的约略年龄，用 “in one’s + 逢十的基数词的复数(如 tens, twenties, thirties等)”来表达。如： in her early forties
（3）倍数用在表示度量名词前，其基本结构为： 倍数 + the + size / length / weight … + of + 表示 比较对象的名词，也可用于倍数 + what引导的从 句中。 This room is three times the size of that one. The college is twice what it was 5 years ago. You can’t imagine that rats eat 40 to 50 times their weight.
高考数词一轮复习讲解
1. 年月日
日期的表示法通常用序数词，也可用基数词， 如“5月5日”在书面语中通常写成 May 5(th) 或5 May 而在口语中则通常说成
May the fifth (the fifth of May)
2. 编号 ①用序数词应放在被修饰词语之前，若用基数词 则置于其后： • the tenth chline six 但是，在许多情况下，用基数词比用序数词更合 适、更方便： • Book One Room 805 • Bus Number Ten 第10路公共汽车 ②可用a / the + number + 基数词 + 名词。 如：a No.5 bus一辆五路公共汽车， the No.8 bus那辆8路公共汽车。
Two hundred (thousand) students went there.
②当这些词后面的名词有了 the, these, those 等特指限定词修饰时，或其后的接的是 us, them 这样的人称代词时，则此时必须用介词 of。 如： two dozen of them 它们中的两打 three score of these eggs 这些鸡蛋中的三打 five hundred of the workers 这些工人中的五 百人
3、“一个半......”的表达法。 one pound and a half one and a half years into halves in half
4、分数和百分数 ①分数。分子用基数词，分母用序数词，当分子 超过“1”时，分母用复数。 如：two thirds=2/3 three-fifths=3/5 ②百分数。百分数由基数词和百分号(%)组成，百 分号(%)读作 per cent。 如：thirty percent=30% 60 percent=60%
6、倍数的表达方式 （1）倍数用在as + 形容词 / 副词（原级）+ as结 构之前。 They have three times as many cows as we do. （2）倍数放在形容词或副词的比较级之前或by + 倍数用在比较级之后。 This rope is four times longer than that one. They produced more products in 2001 than those in 2000 by twice.
several dozen children many dozen books
Thank you
④ dozen, score两词与数词，a few, many, several连用修饰名词复数时，都要用单数，其后 的介词of有无均可。但是，习惯上score多与of连 用，而dozen很少与of连用. 如：two score (of) workers
three score and ten people
③当这些词不与具体数字连用，而是表示不确定 的泛指数时，则不仅要加复数词尾-s, 而且要后接 介词 of, 然后才能接名词。如： I’ve read it dozens (scores) of times. Thousands of students entered the contest. Millions of people died in the war. 注：若不出现名词，则不用介词 of。如： Millions (of people) are homeless. 千千万万的 人无家可归。