1、 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, twelve 2)从13-19均以后缀-teen结尾。 thirteen, fourteen, fifteen, sixteen, seventeen, eighteen,
2、 nineteen 3)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, ninety 21 twenty-one 32 thirty-two 43 forty-three 4)整百数由1—9加hundred构成。 100 one (a) hundred 500 five hundred 5) 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。
3、 101 one hundred and two 245 two hundred and forty- five 6)千 thousand 百万 million 十亿 billion Exercise: 写出下列数字 12 14 20 40 90 19 400
4、 600 35 78 305 678 2、 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:
5、 six → sixth seven → seventh ten → tenth four → fourth 2) 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, nineteenth 3) 二十、
6、三十等基数词变为序数词时,要把y变成ie再加-th。例如: twenty→twentiethforty→fortieth twentieth, thirtieth, fortieth, fiftieth, sixtieth, seventieth, eightieth, ninetieth 4) 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-fifth 5) 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。
7、例如:第一百→hundredth 第一千→thousandth第一百万→millionth 第十亿→billionth 6).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, 40th 7) 序数词前必须加定冠词the The 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
8、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 three five nine eight fourteen twenty thirty-five
9、 3. 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'clock 5:00 读作 five o'clock 或 five B、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 two 8:30 eighty thirty / half past eighty C、“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
10、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 three Exercise: 用英语表示下列时间 10: 05 8: 30
11、 12:10 1:15 5:47 9:23 3:51 11:49 6:00 7:22
12、 2) 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4013586 3)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
13、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 hundred 1870→eighteen seventy 2008→two thousand and eight 1601→sixteen and one或
14、sixteen hundred and one 965→nine sixty-five 3、年、月、日的表示法 1986年9月1日 September 1st, 1986 / 1st September, 1986 2011年8月8日 August 8, 2011 / 8th August, 2011 Exercise: 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
15、 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
16、 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-five C.three hundreds and sixty five D.three hundreds and sixty—five ( )2.Dan
17、ny 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 six C.Class One,Grade Six D.Grade One, Class Six ( )4.The bike cost me _________ yuan. A.five hundred forty
18、 B.five hundreds fourty C.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
19、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—old C.the 8 years old D.an 8一year—old ( )8.—What day is today? — ___________ A.June
20、 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 time C.At seven D.On seven
21、 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,gra
22、de six B.grade one,class six C.Class One,Grade Six D.Grade One Class Six ( )4.The bike cost me _________ yuan. A.five hundred forty B.five hundreds fourty C.five hundred and forty D.five hundred fourty ( )5.My telephone number is ____________. A.eighty eight two forty four zero nine B.eight e
23、ight 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—old C.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 time C.At seven D.On seven






