数词用法讲解及练习
英语数词的用法及专项练习

英语数词的用法及专项练习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)千 thousand 百万 million 十亿 billionExercise:写出下列数字12 14 2040 90 19400 60035 78305 6782、序数词序数词表示排列顺序,如first, second, third等.构成规则:1) 序数词第一、第二和第三为first, second和third,其他序数词的构成是在基数词后加th.例如:six → sixth seven → seventh ten → tenth four → fourth2) fifth(第五)、 eigth (第八)、 ninth (第九)和twelfth (第十二)在拼法上有变化.first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, eighteenth, nineteenth3) 二十、三十等基数词变为序数词时,要把y变成ie再加-th.例如:twenty→twentieth forty→fortiethtwentieth, thirtieth, fortieth, fiftieth, sixtieth, seventieth, eightieth, ninetieth4) 基数词几十几变成序数词时,表示几十的数词不变,只把表示几的基数词变成序数词.例如:twenty-one → twenty-first forty-five → forty-fifth5).序数词的缩略形式是由阿拉伯数字加序数词的最后两个字母构成.例如:1st, 2nd, 3rd, 4th, 21st, 32nd, 40th6) 序数词前必须加定冠词theThe first time I came to China, I liked it very much.我第一次来中国,我就非常喜欢这个国家.The first is always better than the second.第一总是比第二好.She will choose the third. 她将选择第三.Exercise:把下列基数词改成序数词.one two threefive nine eightfourteen twentythirty-five3. 数词的应用1)时刻的表示法A、表示几点钟用基数词加可以省略的o'clock5:00 读作 five o'clock 或 fiveB、半点的表示法表示半点钟时,用“钟点数+ thirty”或“half+ past +钟点数”表示2: 30 two thirty / half past two8:30 eighty thirty / half past eightyC、“几点几分”的表示法(1)用“钟点数+分钟数”表示7:10 seven ten 9:40 nine forty(2)分钟数在30分钟以内的,用“分钟数+ past +钟点数”表示,意为“几点过几分“7:10 ten past seven 10:15 fifteen past ten / a quarter past ten(3)分钟数超过30分钟的,用“(60-分钟数)+ to +下一个钟点数”表示,意为“差几分到几点”10:40 twenty to eleven 2 : 45 fifteen to three / a quarter to threeExercise: 用英语表示下列时间10: 05 8: 3012:10 1:155:47 9:233:51 11:496:00 7:222) 编号的表示法编号既可以用序数词,也可用基数词.the tenth lesson Lesson Ten 第十课the fiftieth page page 50第五十页有的编号习惯上常用基数词.例如:Room 321(读作three two one) 321号房间Tel.No.4013586(读作Telephone number four 0 one three five eight six)电话号码40135863)年、月、日的表示法英语中表示日期的顺序通常为月日年或日月年.1、月、日的表示法“月”用英语中表示月份的名词,“日”用基数词或序数词表示都可以. 7月8日 July 8(July eight) / July 8th ( July the eighth)10月1日 October 1 ( October one) / October 1st ( October the first)2、年的表示法1983→nineteen eighty-three1700→seventeen hundred1870→eighteen seventy2008→two thousand and eight1601→sixteen and one或sixteen hundred and one965→nine sixty-five3、年、月、日的表示法1986年9月1日 September 1st, 1986 / 1st September, 19862011年8月8日 August 8, 2011 / 8th August, 2011Exercise:用英语表示下列日期11月1号 2月10号5月22号 9月17号10月3号 12月19号四、课堂练习1)根据括号中的数字填写合适的序数词或基数词(写单词).1、Bill is (14)years old , he is in Class (2)Grade (6).2、My birthday is on the (3)of March .3、September is the (9)month in a year .4、Which boy is thinner , the (1)one or the (2)one ?5、There are (55)students in our class .2)单项选择( )1.There are ___________ days in a year.A.three hundred and sixty five B.three hundred and sixty-fiveC.three hundreds and sixty five D.three hundreds and sixty—five( )2.Danny lives in __________.A.room 404 B.Room 404 C.404 room D.404 Room( )3.Jim is in __________.A.class one,grade six B.grade one,class sixC.Class One,Grade Six D.Grade One, Class Six( )4.The bike cost me _________ yuan.A.five hundred forty B.five hundreds fourtyC.five hundred and forty D.five hundred fourty( )5.My telephone number is ____________.A.eighty eight two forty four zero nine B.eight eight two double four O nine C.eighty eight two forty-four zero nine D.eight eight two four four zero nine ( )6.Is there any food for us _________?A.ten B.tenth C.the tenth D.the ten( )7.Mary is _________ girl.A. an 8 year old B.8一years—oldC.the 8 years old D.an 8一year—old( )8.—What day is today? — ___________A.June B.Tuesday C.It is hot D.It’s fine( )9.—What’s the date today?— ___________A.It’s Saturday B.It’s July C.It’s fine D.It’s JuIy 15( )10.—What time do you get up every day?A.It’s seven o’clock B.Seven o’clock timeC.At seven D.On seven五课后作业1.There are ___________ days in a year.A.three hundred and sixty five B.three hundred and sixty-fiveC.three hundreds and sixty five D.three hundreds and sixty—five( )2.Danny lives in __________.A.room 404 B.Room 404 C.404 room D.404 Room( )3.Jim is in __________.A.class one,grade six B.grade one,class sixC.Class One,Grade Six D.Grade One Class Six( )4.The bike cost me _________ yuan.A.five hundred forty B.five hundreds fourtyC.five hundred and forty D.five hundred fourty( )5.My telephone number is ____________.A.eighty eight two forty four zero nine B.eight eight two double four O nine C.eighty eight two forty-four zero nine D.eight eight two four four zero nine ( )6.Is there any food for us _________?A.ten B.tenth C.the tenth D.the ten( )7.Mary is _________ girl.A. an 8 year old B.8一years—oldC.the 8 years old D.an 8一year—old( )8.—What day is today? — ___________A.June B.Tuesday C.It is hot D.It’s fine( )9.—What’s the date today? — ___________A.It’s Saturday B.It’s July C.It’s fine D.It’s JuIy 15( )10.—What time do you get up every day?A.It’s seven o’clock B.Seven o’clock tim e C.At seven D.On seven。
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。
(英语)英语数词技巧和方法完整版及练习题含解析

(英语)英语数词技巧和方法完整版及练习题含解析一、初中英语数词1.—Dad, about of our classmates wear glasses.—Oh, that's terrible. You all should take good care of your eyes.A. three fourthB. third fourthC. third fourthsD. three quarters【答案】 D【解析】【分析】句意:——爸爸,大约四分之三的同学戴眼镜。
——噢,那真可怕。
你们都应该好好照顾你们的眼睛。
分子用基数词,分母用序数词,中间用连字符,若分子大于一,分母用复数形式。
四分之三用three fourths或者three quarters,故选D。
【点评】考查分数表达,注意平时识记。
2.—What day is the ______ day of the week?—It's Friday.A. fifthB. fiveC. sixD. sixth【答案】 D【解析】【分析】句意:——一周的第六天是星期几?——星期五。
A.第五;B.五;C.六;D.第六。
星期五是一周的第六天,因此使用sixth,故答案是B。
【点评】考查序数词,追序数词在具体语境中的运用。
3.My family lives on ________________ floor of the building.A. twelveB. the twelfthC. twelfthD. the twelve【答案】 B【解析】【分析】句意:我家住在这栋楼的第20层。
表示第几层,用the+序数词+floor,固定搭配,twelve,12,基数词;twelfth,第12,序数词,故选B。
【点评】考查序数词用法,注意平时识记the+序数词+floor。
4.Two students to the opening ceremony last Friday.A. hundreds; were invitedB. hundred; were invitedC. hundreds of; invited【答案】 B【解析】【分析】句意:上周五有200名学生被邀请参加开幕式。
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。
初中英语语法讲解与练习【数-词】

初中英语语法讲解与练习【数-词】数词数词英语数词表示数目或者顺序,可分为基数词和序数词。
基数词表示数量,序数词表示顺序。
知识梳理:提纲挈领,抓住重点和难点!一、基数词的构成1.1-12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。
为序数词时,有特别之处。
1.one--- first, two --- second, three --- third, five --- fifth, nice --- ninth, twelve --- twelfth2. 以ty 结尾的单词,要先变y为I, 在加-eth. 例如:thirty ---thirtieth, fifty ---fiftieth3. 以one, two, three 等结尾的多位数词,要将各位数变成序数词。
例如:twenty-one --- twenty-first, one hundred and one --- one hundred and first注意:序数词前常用定冠词,有时还可以用不定冠词a/an 则表示"又一"的意思。
例如:Mr Brown has a second car. 布朗先生另外还有一辆车。
数词讲解和中考训练(含答案)

语法专项突破数词考试要求:中考关于数词的考查要求是:基数词表示数目和号码的用法;基数词表示年级、班级、房间和编号的用法;hundred,thousand,million和billion的用法;序数词表示次序的用法;分数的表达方式及用法;定冠词the和序数词连用知识点等。
用法讲解1.基数词:A. 基数词的构成:(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(2) 13-19的基数词:分别在3-9的基数词后加词缀-teen,但要注意几个特殊变化的基数词:13-thirteen,15-fifteen,18-eighteen。
(3) 20-90的逢十的基数词:分别在2-9的基数词后加-ty构成,即:20-twenty,30-thirty,40-forty,50-fifty,60-sixty,70-seventy,80-eighty,90-ninety。
(注意20,30,40,50,80拼写的特殊变化。
)(4) 21-29的基数词:由十位数20的单词形式twenty加个位数1-9构成。
中间用连字符。
即:21-twenty-one,22-twenty-two,23-twenty-three,24-twenty-four,25-twenty-five,26-twenty-six,27-twenty-seven,28-twenty-eight,29-twenty-nine。
其他的十位数照此类推。
(5) 百位数是由1-9加hundred构成。
例如:200-two hundred。
有百位数、十位数和个位数的三位数,百位数和十位数之间用and连接。
例如:127-one hundred and twenty-seven。
(6) 千位数是由1-9加thousand构成,后面的百位数、十位数和个位数与前面的构成方法一样。
初中必备英语数词技巧全解及练习题(含答案)

初中必备英语数词技巧全解及练习题(含答案)一、初中英语数词1.A year is divided into ______ months. September is the _____ month of the year.A. twelve, ninthB. twelve, ninethC. twelfth, ninthD. twelfth, nineth 【答案】 A【解析】【分析】句意:一年分为十二个月。
九月是一年中的第九个月。
第一个空格后有month,月,可数名词复数monthes,其前要用基数词表示数量。
twelve十二;第二个空格前有定冠词the,空格后有可数名词month,单数,要用序数词表示顺序。
要用ninth第九。
根据故选A。
【点评】考查基数词和序数词。
注意基数词表示数量,序数词表示顺序。
2.The number of the students in our school is about four __________._______ of them are girls.A. thousand; Two thirdsB. thousands; Two thirdC. thousands; Two thirdsD. thousand; Two third【答案】 A【解析】【分析】句意:我们学校的学生人数大约是四人。
三分之二是女孩。
four基数词后用thousand的原形,分数表达形式是分子是基数词,分母是序数词,分子大于一,分母用复数形式,故三分之二是two thirds,故选A。
【点评】考查数词,注意分数的用法。
3.Did you know that the earth is home to ______ animals?A. millionB. millionsC. million ofD. millions of【答案】 D【解析】【分析】句意:你知道地球是几百万动物的家园吗?millions of,固定搭配,几百万的;数词+million,表示具体的……百万,此时million是单数形式;空前没有具体数词,因此用millions of,故选D。
初中英语数词用法及练习

初中英语数次归纳及练习数词主要分为基数词和序数词两类。
一、数词的分类1.基数词表示数目的词称为基数词。
其形式如下:A.从 1—— 10one,two, three, four ,five, six,seven, eight, nine,ten.B.从 11—— 19eleven,twelve, thirteen, fourteen, fifteen , sixteen, seventeen,eighteen,nineteen.这里除 eleven, twelve , thirteen, fifteen , eighteen 为特殊形式外, fourteen,sixteen,seventeen, nineteen 都是由其个位数形式后添加后缀 -teen 构成。
C.从 21—— 99整数几十中除 twenty,thirty, forty , fifty ,eighty 为特殊形式外, sixty, seventy,ninety 都是其个位数形式后添加后缀 -ty 构成。
表示几十几时,在几十和个位基数词形式之间添加连字符“-”21 twenty-one76 seventy-sixD.百位数个数基数词形式加“hundred,”表示几百,在几十几与百位间加上and.101 a hundred and one320 three hundred and twenty648 six hundred and forty-eightE.千位数以上从数字的右端向左端数起,每三位数加一个逗号“,”。
从右开始,第一个“,”前的数字后添加thousand,第二个“,”前面的数字后添加million ,第三个“,”前的数字后添加 billion 。
然后一节一节分别表示,两个逗号之间最大的数为百位数形式。
2,648 two thousand six hundred and forty-eight16,250,064 sixteen million two hundred and fifty thousand sixty-four5,237,166,234 five billion ,two hundred and thirty-seven million , one hundred and sixty-six thousand,two hundred and thirty-fourF.基数词在表示确切的数字时,不能使用百、千、百万、十亿的复数形式;但是,当基数词表示不确切数字,如成百、成千上万,三三两两时,基数词则以复数形式出现。
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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。
凡是以th结尾的序数词可缩写为“基数词+th”:4th, 5th, 9th, 11th, 60th, 128th等。
4. 非整十的多位数,将个位数变成序数词即可:twenty-first(第21),thirty-sixth(第36),ninety-ninth(第99),three hundred and sixty-fifth(第365)等。
5. hundred, thousand, million 等序数词形式为hundredth, thousandth, millionth 等。
6. 序数词前通常要用定冠词,但表示考试或比赛等的名次时,通常可省略其前的定冠词。
如:My room is on the second floor and his on the third. 我的房间在三楼,他的房间在四楼。
He was (the) third in the exam. 他考试得了第三名。
注:有时序数词前不用定冠词,而用不定冠词,表示次第在原有基础上的增加。
如:We'll have to do it a second time. 我们得再做一次(from 。
序数词前用定冠词和不定冠词的区别在于:定冠词表特指,不定冠词表泛指,有类似another的意思,但比another 的意思更明确。
IV. 分数、倍数、小数和百分数1. 分数。
(1)分数由基数词和序数词构成: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注:1/2 通常读作 a [one] half,一般不读作a second;1/4 可读作 a [one] fourth,也可读作 a。
[one] quarter十分ten 分子在前,分母在后,分子分母都用基数词。
如one in (2) 分子与分母之间加in,八分之五。
之一,five in eightone out of ten分母在后,分子分母都用基数词。
如分子与分母之间加(3) out of , 分子在前,十分之一,five out of eight八分之五。
倍数。
英语中表示倍数时通常借助half, double, twice, three times等之类的词。
如:2.They're twice the size of chickens. 它们比鸡大一倍。
他们的房子大约有我们房子三倍大。
Their house is about three times as big as ours.倍数的几种表达法这座桥This bridge is three times as long as that one.)+ as。
如:(+as +形容词/副词原级(1) 倍数是那座桥的三倍长。
这This bridge is three times longer than that one.+than。
如:(2) 倍数+形容词或副词的比较级座桥是那座桥的三倍长。
表示比较对象的名词。
如:倍数+ the size/length/weight…+of+(3)这座桥是那座桥的三倍长。
This bridge is three times the length of that one.引导的从句。
如:倍数+what(4)这所大学是它五年前的两倍。
The college is twice what it was 5 years ago.per cent。
如:组成,百分号(%)读作3. 百分数。
百分数由基数词和百分号(%)60percent=60%thirty percent=30%,,作主语时,谓。
若表示几分之几或百分之几十的人或物时,用加of“基数词+percent”用of 后的名词数一致。
如:语动词的数与Forty percent of the students wear glasses.百分之四十的学生戴眼镜。
三分之二的钱都花在食物上。
Two-thirds of the money was spent on food.. 注意:percent 一律用单数形式4. 小数。
小数点前的数按总数念,同其它基数词读法一样,小数点用point,小数点后面的数按基数词一个一个单独念。
如读作nine point six five。
读作two hundred and eighteen point three nine。
V. 日期1949年1949读作nineteen forty-nine6月23日June 23rd 读作June (the) twenty-third或the twenty-third of June2006年10月October 2006 读作October, two thousand and six1600年5月2日May 2nd, 2005 读作the second of May, sixteen hundredVI. 钟点半小时用half,一刻钟用a quarter,半小时以内用past,超过半小时用to。
08:00 eight o'clock或eight09:15 nine fifteen或a quarter past/after nine02:30 two thirty或half past/after two05:45 five forty-five或a quarter to six14:15 fourteen fifteen= p. m.23:05 twenty-three oh five24:00 twenty-four hundred hours=midnightVII. 编号1. 单纯的编号,可在基数词前加number,简写为No.。
如第二。
2. 序号与事物名词连用时分三种情况(from :(1)小序号可用“the +序数词+名词”或“名词+基数词”。
如第一次课可以说the First Lesson或LessonOne。
(2)大序号通常只用“名词+数词”。
如808号房间Room 808;168路公共汽车Bus ;南京路1490号1490 Nanjing Road;电话号码(用基数词逐个念,0念字母O)。
(3 )用“a/the + number+基数词+名词”。
如a bus一辆三路公共汽车,the bus那辆三路公共汽车。
VIII. 约数1. 用tens/dozens/scores/hundreds/thousands/millions of表示“几十、几百、上千、成千上万”等。
如:The boy bought dozens of pencils.那个男孩买了几十支铅笔。
Thousands of people died in the earthquake.数以千计的人死于地震。
注意:(1)dozen, score, hundred, thousand, million等表示确切数量时,不用复数。
如five dozen eggs五打鸡蛋, three hundred people五百个人。
但score用法略有不同,与数词连用时,也加of。
如two score of eggs (40个蛋)。
(2)有时单数形式的dozen, score, hundred, million等前面有数词,后面也有of,此时的of表示的是部分与整体的关系,其后一定是them, us之类的人称代词或者有the, these, your之类的限定词。
如I want to buy three dozen of the eggs. (我想买其中的三打蛋) (from 用less than,under, below, almost, nearly, up to等来表示小于或接近某数目。
如nearly two hours将近两个小时。
3. 用more than, beyond, or more, over, above等来表示超过或多于某个数目。
如more than100 years一百多年。
4. 用or, or so, about, around, some, more or less等表示在某一数目左右。
如about 50 pens大约五十支钢笔,a month or so大约一个月。
5. 用to, from…to…, between…and表示介于两数词。
如:His salary rose from 100 dollars a month to 120 dollars a month.他的工资从每月100美元升到了每月120美元。
IX. 年代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。