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