英语数词

数词
一、数词的概念
表示人或事物的数目和顺序的词是数词。

如：eight 8 nineteen 19 sixty-six 66
first 第一tenth 第十twenty-seventh 第二十七
二、数词的分类
数词分为基数词和序数词。

1.基数词
（1）1-19的基数词
one two three four five six seven eight nine ten
eleven twelve thirteen fourteen fifteen sixteen
seventeen eighteen nineteen
(2)20-90的整十数基数词
twenty thirty forty fifty sixty seventy eighty ninety
(3)非整十数基数词(十位和个位数之间用连字符号“-”)
Twenty-three forty-four ninety-nine
（4）101-999的基数词
①整百基数词five hundred 500 eight hundred 800
②非整百基数词one hundred and one 101
three hundred and sixty-five 365 （5）1000以上的基数词
five thousand 5,000
nine thousand nine hundred and ninety-nine 9,999
thirty thousand 30,000
（6）年代的读法：每两位数读一读
1997nineteen ninety-seven
2010 two thousand and ten
请读一读下面的句子
There were 450 sheep and 83 cows in the farm in 2005.
读作：There were four hundred and fifty sheep and
eighty-three cows in the farm in two thousand and five.
2.序数词
（1）1-19的序数词
（2）20-90的整十数序数词：基数词词尾y变成i,再加eth/IT /
（3）非整十数序数词
三、数词的用法
1.基数词的用法
（1）编号的事物用基数词
如：She is the No.one.她是第一名。

Today we are going to learn Lesson Three.
（2）表示时间时用基数词。

如：eight o’clock 8点
eleven twenty-five 十一点二十五分（可从前到后依次读）
twenty to eleven 十点四十分（分针大于30，可用to)
a quarter past seven 七点一刻(分针小于或等于30，可用past)
（3）表示年龄时用基数词
如：He is twenty. 他二十岁了。

When she was six, she went to primary school.
当她六岁时，她上了小学。

（4）一些数学公式的读法
4+9=13：Four plus/and nine is thirteen.
15-7=8: Fifteen minus seven is eight.
2.序数词的用法
⑴序数词主要用作定语、表语。

前面要加定冠词the.
The third chair is better than the second. 第三把椅子比第二把好。

⑵表示日期的读法
9月10日读作：September (the) tenth或the tenth of September.
Exercises
一、把下列基数词改成序数词
one . five . thirty .
twelve twenty-two
二、选择题
1.-What time is it now? -It’s .
A.No.6
B. six ten o’clock
C. half past six
2.There are days in January.
A.29
B.30
C.31
3.-How much is the coat?- It’s.
A.thirty o’clock
B. thirty yuan
C. thirty years old
4.-Which class are you in? - .
A.I’m two.
B. I’m in class two.
C. I’m in C lass Two.
5.-When is your birthday? - .
A. It’s on the 10th of July.
B. It’s on 10 of July.
C. It’s 10 of July.
6.I can see six oranges in the bag and eight oranges in the box.
I have got oranges
A.forty
B. fourteen
C. fourteenth
7.I am Tom. I have two brothers. My parents have sons.
A.one
B. two
C. three
8. My parents have three children. My brother is older than me, and my sister is
younger than me. I am the child of my parents.
A.third
B. second
C. two
9.-How many stars are there in our national flag(国旗)?
- There are .
A.four
B. five
C. six
10.China hold Olympic Games successfully.
A. the twenty-ninth
B. twenty-nineth
C. the twenty-eighth
11.Today is of the new term. All the students are happy to see each other.
A. one
B. first
C. the first
12.Sunday is the day of a week.
A. first
B. last C second
13.The twelfth month in a year is .
A. November
B. December
C. October
14. -How can I get to the supermarket?
- Go along the street and turn left at crossing.
A. the second
B. two
C. second
15.His birthday is on .
A. 1995,April 6
B. April six,1995
C. April 6,1995。