基数词讲解

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1 基数词

Name:_______________

(1) 基数词的构成及其说明

1)1~12是独立的单词。即:

one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve

2)13~19,多数在末尾加-teen, 但应注意13、15、18的拼写形式。例如:

13→thirteen 14→fourteen 15→fifteen 16→sixteen

17→seventeen 18→eighteen 19→nineteen

3)从20~90整十位数,多数在词尾加-ty,但要注意20、30、40、50和80的拼法。例如:

20→twenty 30→thirty 40→forty

50→fifty 60→sixty 70→seventy

80→eighty 90→ninety

4)21~99是由几十和几合起来构成,中间加连字符(-)。例如:

21→twenty-one 32→thirty-two

55→fifty-five 74→seventy-four

86→eighty-six 99→ninety-nine

5)101~999等三位数中,十位数或个位数的前面加and。例如:

101→a(one)hundred and one

230→two hundred and thirty

513→five hundred and thirteen 2 678→six hundred and seventy

999→nine hundred and ninety-nine

6) hundred, thousand, million与of连用

数词hundred, thousand, million等的前面有其他数词,用作确定的数目时,不用复数形式。例如:

three thousand三千(不能说:three thousands)

five hundred五百(不能说:five hundreds)

但是当hundred, thousand, million在用作不确定的数目时,则需用复数形式,并且往往后接of。例如:

hundreds of people几百人

hundreds of thousands of people几十万人

millions of the locusts千百万只蝗虫

巧学巧用

有hundred等数词

有s时有of, 没有s没of;

数词前面加,没有s没of;

前面无数词,有s也有of。

I. 基数词的用法:

1. 基数词:表示数目的词称为基数词。我们所学过的基数词有:

zero, one,two,three,four,five,six,seven,eight,nine,ten ,eleven,twelve等

2. 基数词的用法:

(1)基数词可以表示物体的数量。 如:

three books 三本书 five boxes五个盒子 two cups of tea 两杯茶 ten pieces of bread 十片面包

(2)基数词可以表示钟点。如: 3 8:00读作 eight o’clock 9:00读作 nine o’clock

11:00 读作 _______________ 12:00 读作______________

7:20顺读法: seven twenty 7:30顺读法: seven thirty

逆读法:twenty past seven 逆读法:half past seven

10:35 顺读法: ten thirty-five 9:45 顺读法:nine forty-five

逆读法:twenty-five to eleven 逆读法:fifteen to ten

6:15顺读法:_________________5:13顺读法:__________________

逆读法:________________ 逆读法:________________

6:55顺读法:________________4:40顺读法:________________

逆读法:________________ 逆读法:________________

**10分钟以内的时间,可以这样说“钟点数+o(英文字母o 的发音)+ 分钟” 。

例如:6:05—six o five

(3)基数词可表示年龄。如:

How old is Tom? He is ten (years old).

How old are they? They are nine(years old).

How old is your sister? She is eleven(years old).

(4)基数词还可表示在几年级几班。

英语中表达在几年级几班时通常班级在前,年级在后,班级和年级间要用逗号隔开。例如:I’m in Class 2, Grade 4. 我在四年级二班。

注意:Class和Grade后的数字既可以用阿拉伯数字,也可以用英语中的基数词表示,但基数词和名词的首字母要大写。例如:

Class 4 = Class Four

Grade 3 = Grade Three

(5)基数词还可用于算式中。如:one + nine = ten

twelve - seven = five three × three = nine eight ÷ two = four

(6)基数词还可以表示年份。如 1990 nineteen ninety, 1900

nineteen hundred, 894 eight ninety-four, 2013 two thousand and thirteen,

1999 nineteen ninety-nine 2001 two thousand and one

1986 nineteen eighty-six 1612 sixteen twelve

1535 fifteen thirty-five 732 seven thirty-two

【考题链接】

1. —What time is it? —It is 11: 45

A. fifteen to twelve B. forty-five to eleven

C. eleven to fifteen D. fifteen past twelve

答案:A

思路分析:考钟点的逆读法,表示分钟的数字大于30 用to, 4 格式:分钟 to [时钟+1]

2. I’m in _____.

A. Grade 3, Class 2 B. Class 3, grade 2 C. Class Three, Grade

Two

答案:C

思路分析:Class和Grade后的数字既可以用阿拉伯数字,也可以用英语中的基数词,但基数词和各词的首字母应大写。

3. “The year 1964” should be read “The year______”.

A. ninety sixty-four

B. nineteen sixty-four

C. one thousand nine hundred and sixty-four

D. nineteen hundred and sixty-four

答案:B

练习

( ) 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 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 ____________. 5 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.—What time do you go to school — I go to school at 7:15

A. seven to fifteen B. fiveteen past seven

C. fifteen past seven D. fifteen to seven

( ) 7.—What day is today? — ___________

A.June B.Tuesday

C.It is hot D.It’s fine

( ) 8.—What time do you get up every day?

A.seven past thirty B.thirty past seven

C.thirty to seven D.half to seven

( ) 9. _________ people visit this museum every day.

A. Hundred B. Hundreds C. Hundred of D. Hundred of