巧记英语序数词
英语中的数词分为基数词和序数词,而基数词和序数词的的变化学生常出现错误,在教学过程中我总结了以下口诀,学生们用起来就简单多了,并且还不会出错。
基变续,有规律,词尾加上th;
一二三,特殊记,词尾字母t,d,d(first,second,third);
八减t(eighth), 九去e (ninth),f来把ve替(five---fifth,twelve---twelfth); 单词ty作结尾,ty变成tie(twenty-twentieth);
若是碰到几十几,只变个位就可以(twenty-one----twenty-first).
序数词表顺序,一般需用定冠词。
基数词和序数词的练习题
一、写出下列词的序数词 1. one 2.two 3. six 4.five 5. nine 6.twelve 7.eight 8.twenty-one
二、写出下列单词的基数词 1.third 2.fourth 3.tenth 4.twentieth 5.nineteenth 6.thirty-first _
三、根据句子意思填空。
1. Children’s Day(儿童节) is on the of June(六月). 2. There are months(月)in a year(年).
3. Teacher’s Day(教师节) is on the of September(九月).
4. Three plus(加) six is .
四、选择题
( )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
1
( )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 ____________.
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.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
一、单项选择
( tall.
A. fourteen foots B. fourteen feet
2
C. fourteen foot D. forty foot
( .
A. fourty is ninety B. forty is ninety
C. thirty is ninety D. fifty is ninety
( A. four hundred fifty-two B. four hundreds fifty two
C. four hundred and fifty-two D. four hundreds and fifty-two
( A. three hundred metre B. three hundreds metres
C. three hundred metres D. three hundred metre
( A.the twelveth B.twelve C.the twelfth D.twelfth
( A.Three quarters B.Two-third
C.Two fifth D.Two-ninth
( century.
A.the twenties B.the twentieth
C.twenties D.twentieth
( 新四军),while his mother worked in Route Army(八路军).
A. Fourth; Eighth B.Four; Eighth
C.Fourth; eight D.Fourth; eighth
( now.
A.the twenty-first lesson B.Lesson Twenty-first
C.the 21 th lesson D.Lesson 21 st
( .
A.one and half month
B.one and a half month
C.one months and a half
D.one and a half months
3
( )11.—What’s the date today?—It’s.
A. nine B. Monday C. June 5 D.11:00
( )12.— —No, thank you.
A.more two B.two more C.two another D.two else
( A.one or two days B.o or two days C.one and two days D.a day and two
( )14.—How often do you write to your parents abroad?
—.
A.Twice a month B.Second times a month
C.A second time a month D.second a time a month
( A.Thousand of B.Thousands of C.Ten thousands of D.Ten thousand of
( was covered by forest in the USA.
A.third B.a third C.the third D.a thirds
( birthday, I think.
A.twenty B.twentieth C.the twentieth D.the twenty’s
( is Teachers’Day.
A.the ten B.tenth C.the tenth D.the ten’s
( A.two thousand five hundred and sixty
B.two thousands five hundred and sixty
C.two thousands five hundreds and sixty
D.two thousand five hundreds and sixty
( A. A number B. The number of C. A great number D. The biggest numbers of
4
数词专练
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, 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。
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
14 20 90 19 400 600 35 78 305
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: 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、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。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.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
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 5:47 9:23 3:51
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sixteen hundred and one
965→nine sixty-five
3、年、月、日的表示法
19xx年9月1日 September 1st, 1986 / 1st September, 1986
20xx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 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 , 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.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 ____________.
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.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
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,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 ____________.
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.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
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