您好,欢迎来到化拓教育网。
搜索
您的当前位置:首页基数序数

基数序数

来源:化拓教育网
博思教育 享受学习 快乐成长

基数词与序数词专项练习

基数用于表示数量多少,而基数词用于表示次序,常在日期中出现。区别:基数词前面没有“the”;序数词前一定要有“the”。

一、知识归纳

①基数词变序数词的规律:

一、二、三、特殊记(first, second, third)。

八减t,九去e,(如:eighth, ninth), f 来把ve替。(如:twelfth).

单词ty作结尾,ty变成tie(如:twentieth).

若是碰到几十几,只变个位就可以。(如:twenty-first)

②1-100的序数词:

1st--first;2nd--second;3rd--third;4th--fourth;5th--fifth;6th--sixth;7th--seventh;8th--eighth;9th--ninth;10th--tenth;11th--eleventh;12th--twelfth;20th--twentieth;21st--twenty-first;22nd--twenty-second;29th--twenty-ninth;30th--thirtieth;31st--thirty-first;40th--fortieth;50th--fiftieth;60th--sixtieth;70th--seventieth;80th--eightieth;90th--ninetieth;100th—hundredth

2. 序数词的用途

1

博思教育 享受学习 快乐成长

a. 用来表示时间 ,表示年月日: “年”用基数词,“日用序数词”。例如:

例如:2008年2月28日可以表示为February 28th, 2007

表日期的时候 It’s the 16th of October= It’s October 16th。

表示时刻的话,A)直接读写数词。如:9:15 nine fifteen , 10:30 ten thirty , 11:45 eleven forty-five ,7:05 seven o five , 2:25 two twenty-five , 5:55 five fifty-five

B)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 twelve ,7:05 five past seven , 5:55 five to six

b. 用来表示顺序 例如:He is always the first to come to school.

表示事物的编号:如: the ninth part = part nine 第九部分

the Fourth Lesson = Lesson Four 第四课 the sixth paragraph= paragraph six 第六段

c. 用来表示楼层 例如:He lives on the fourth floor。

以下是表示月份的单词,同学们要牢记: January, February, March, April, May, June, July, August, September, October, November, December,

2

博思教育 享受学习 快乐成长

d、表示“加减乘除”:

15+2=? How much is fifteen plus two? 8-7=? How much is eight minus seven?

12×12=?How much is twelve times twelve? 81÷9=?How much is eighty-one divided by nine?

e、用数词表示分数时,分子用基数词,分母用序数词;如果分子大于1,分母要用复数。 1/2: one-second 3/4 three-fourths, 2/5 two-fifths.

f、读小数时,数字只用基数词: 3.4 读作:three point four 0.2读作zero point two

g.一百是a hundred 两百是two hundred ,几百是hundreds of

二、巩固练习:

A、用英语写出下列日期:

1月6日 八月七日 5月1日 4月3日 12月1日 10月1日 九月十日 2月4日

B、 用英语写出下列数字:

1/2 1/3 3/4 2/5 4/7 42.7 5.3 6.37 8.96

3

博思教育 享受学习 快乐成长

C、用英语写出下列算式:

1+1=2 2+5=7

19-12=7 23-17=6

D、用英语写出下列时间:

9:30 1:05 6:40 8:57 4:09 12:00 .

三、选择填空。

( )1. My cousin’s birthday on the _____ of October.

A. three B. first C. the second

( )2. What date is it today? It’s _____ of April.

A. twelfth B. the 12th C. 12th

( )3.Sunday is the _____ day of a week.

A. one B. first C. second

4

博思教育 享受学习 快乐成长

( )4. —What’s the time, please? —It’s _______.

A. nine thirty-five B. forty-eight past six C. fifty-five to four D. thirty-one two

( )5. There are _______ days in a year.

A. three hundreds sixty-five B. three hundred and sixty-five

C. the third hundred sixty-five D. third hundred and sixty-five

( )6. The computer was cheap. I spent only two _______ yuan on it.

A. thousands B. thousand C. thousands of D. thousand of

( )7. —On which floor do you live? —The _______ floor, and my room number is _______.

A. fifth; five zero two B. fifth; five zero second

C. five; five zero second D. five; five zero two

( )8.In our city _______ people have moved into their new houses.

A. thousand B. thousands C. thousands of D. many

5

博思教育 享受学习 快乐成长

thousand

( )9. Now children, turn to page _______ and look at the _______ picture in Lesson Two.

A. twentieth, one B. twenty, one C. twentieth, first D. twenty, first

( )10. About _______ of the students in our class are League members.

A. four-fifths B. four-fifth C. four-fives D. four-fifths

6

因篇幅问题不能全部显示,请点此查看更多更全内容

Copyright © 2019- huatuo9.cn 版权所有 赣ICP备2023008801号-1

违法及侵权请联系:TEL:199 18 7713 E-MAIL:2724546146@qq.com

本站由北京市万商天勤律师事务所王兴未律师提供法律服务