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(完整word版)小学英语数词讲解与练习

数词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) 第一百、第一千、第一百万、第十亿都是在基数词后直接加th构成。

例如:第一百→hundredth第一千→thousandth第一百万→millionth第十亿→billionth6).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, 40th7) 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 twenty thirty-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 nineB.eight eight two double four O nineC.eighty eight two forty-four zero nineD.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.TuesdayC.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-five C.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 nineB.eight eight two double four O nineC.eighty eight two forty-four zero nineD.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。

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