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数词
i.数词的形式和读法
英语中数词分为基数词和序数词，基数词表示数目,序数词表示顺序。
1.基数词和序数词的对应形式列表如下:
2.数词的读法。
专项训练1
判断下列数词的读法是否正确，正确的用T表示,错误的用F表示。
1. ( )31 →thirty-one
2. ( ) 612th →six hundred and twelfth
3. ( ) 5,207 →five thousand and two hundred and seven
4.( )481st →four hundred and eighty-first
5.( ) 10,293 →ten thousand two hundred and ninety- three
6.( ) 7 ,813 →seven thousand eight hundred and thirteen
7.( )201st →two hundredth and first
8. ( ) 123,011 →one hundred and twenty- three thousand and eleven
9.( )83,479 →eighty thousand thirty-four hundred seventy and nine
10.( ) 100,600,500 →one hundred million six hundred thousand five hundred
ii.基数词
1.基数词表示数量的多少,在句中可作主语、宾语、表语和定语等。
Two and six equals eight.二加六等于八。(作主语和宾语)
At the age of three, Mary began to play the piano.
玛丽从三岁起开始弹钢琴。(作介词的宾语)
My student number is fifteen.我的学号是15号。(作表语)
The square has four straight sides.正方形有4条边。(作定语)
2. hundred, thousand 和million在表示具体数目时,用单数形式;在表示不确定数目时，
用hundreds of, thousands of和millions of形式。
two hundred trees两百棵树 hundreds of students数以百计的学生
three thousand people 三千人 thousands of songs数以千计的歌曲
one million dollars一百万美元. millions of homes数以百万计的家庭
专项训练2
选择填空。
( ) 1. Let's cut the cake into pieces.
A. four B. fourth C. the four D. the fourth
*( ) 2. January comes in a year.
A. one B. first C. the one D. the first
*( ) 3. Wild geese change homes every year.
A. two B. second C. twice D. two times
( ) 4. We count in tens because we have fingers.
A. two B. ten C. tens D. tenth
( )5.A century is years' time.
A. ten B. one hundred C. one thousand D. one million
( ) 6. There are days in a year.
A. three hundred sixty-five B. three hundreds sixty-five
C. three hundred sixty and five D. three hundred and sixty-five
( ) 7. Children can go to school in China when they are years old.
A.four B. nine C. six D. eight
( ) 8. There were dinosaurs on the earth in the ancient time.
A. a million B. million of C. millions D. millions of
( ) 9. Little Rabbit is in the race.
A. two B. the two C. second D. the second
( )10. There are paintings in the Louvre Museum.
A. thousands of B. hundreds of C. thousand of D. hundred of
iii.序数词
1.序数词表示顺序的先后,一般与定冠词连用,在句中可作主语、宾语、表语和定语等。
The first of April is Fool's Day.四月一日是愚人节。(作主语)
This is my second visit to Singapore. 这是我第二次游览新加坡。(作定语)
You are the first to hear the news.你是最早知道这个消息的人。(作表语)
Please give me the third. 请给我第三个。(作宾语)
2.序数词还有副词的功能,在句中可作状语。
First I got up, and then I brushed my teeth. 我先起床,然后刷牙。
Gilbert came second in the race.吉尔伯特在赛跑中得了第二名。
专项训练3
用所给基数词和序数词的适当形式填空。
1. October comes in a year. (ten)
2. Mike puts apple pies in a line. ( fifth)
3. I visit my grandparents a month. (one)
4. The students have PE lessons a week. (two)
5. Her students number is______ ( twelfth)
6. Mr. Lynn teaches the grade this term. (four)
7. The swallow will be back the warm day of summer time. (one)
8. The______ Lesson is very difficult in the English textbook. ( eleven)
9. The Yellow River is the longest river in China. ( two)
10.- -How many pencils can you see? - -_______ pencils. (ninth)
iv.分数.小数和百分数
1.分数由基数词和序数词组合构成,分子由基数词表示,分母由序数词表示。当分子为1时,分母呈单数形式;当分子大于1时,分母呈复数形式。
-a/ one half -a/ one third - a/ one fourth - a/ one quarter
-one fifth -two thirds -six sevenths
-eight and three fourths
2.小数由基数词加小数点构成,小数点读作point,小数点以前的数按基数词的规则读，小数点以后的数按数字排列顺序从左到右依次读出。
0.3- zero point three/ 0 point three
0.29- zero point two nine/ 0 point two nine
15.748- fifteen point seven four eight
746.021- -seven hundred and forty six point zero two one
3.不满1或大于1的小数- -般被视为复数。
0.5 kilograms equal one jin. 0.5公斤等于1斤。
4.百分数由“基数词+百分号%”构成，百分号%读作percent或percent。
6%-six percent/ per cent
50%- fifty percent/ per cent
100%一-a/ one hundred percent/ per cent
0.25%-(zero) point two five percent/ per cent
5.percent of..作主语时,若其后的名词是单数或不可数名词时,谓语动词用单数形式;若其后的名词为复数时,谓语动词则用复数形式。
90% of the population has a television. 人口中有百分之九十有电视机。
Forty percent of the workers are women.工人中百分之四十是女性。
专项训练4
选择填空。
( ) 1. Zero point two five means_______ .
A. a half B. a quarter C. one-fourths D. zero point twenty-five
( ) 2.______ people go to the sea- side every year.
A. Thousand B. Thousands C. Thousand of D. Thousands of
( ) 3. There' re thirty students in our class. Fifteen of them are boys,______ of them are girls.
A. a half B. a quarter C. fifteen percent D. zero point two five
( ) 4. Nearly twenty-one percent of air ;______oxygen.
A. are B. have C. is D. has
( ) 5. Twenty-five percent and seventy-five percent is_______.
A. one B. zero C. a half D. a quarter
( ) 6. Nearly ten percent of all children______private schools.
A. attend B. attends C. attended D. attending
( )7.is _______
A. four point five B. zero point eight
C. zero point four five D. zero point forty-five
( ) 8. One kilometer equals_______.
A. one hundreds meters B. one thousand /i
C. one thousand meters D. one thousand miles
( )9.I am_______metres tall.
A. one point forty B. one point fourteen
C. one point four zero D. one point one four
( )10. means_______.
A. eleven point four five B. eleventh fourth fives
C. eleven and four fifth D. eleven and four fifths
v.算式表示法
6+2=8 Six plus two is/ equals/ makes eight.
Six and two are/ equal/ make eight.
If you add six and two, you will get eight.
6-2=4 Six minus two is/ equals/ leaves four.
Two from six is/ equals/ leaves four.
If you subtract two from six, you will get four.
6x2=12 Six multiplied by two is/ equals twelve.
Six times two .is/ equals twelve.
If you multiply six by two, you will get twelve.
6+2=8 Six divided by two is/ equals three.
Six over two is/ equals three.
If you divide six by two, you will get three.
1. add(加) ,subtract(减) , multiply(乘) ,divide(除)为动词。
2. and(和)为连词,A and B后用动词的复数形式。
3. plus(加),from( 与.....分离)，minus(减去)，times(乘以), over [...(分子)分之......(分母)]为介词,A+介词+ B后用动词的单数形式。
专项训练5
完成下列计算题。
1. Twelve and twenty are_______.
2. Thirteen from forty is_______.
3. Nine times nine is_______.
4. Sixty-three over seven is_______.
5. One hundred and eleven plus eighty-nine equals_______.
6. Two hundred and fifty-six minus seventy equals_______.
7. Sixteen multiplied by three equals_______.
8. One hundred divided by ten equals_______.
vi.号码表示法
Lesson 5 Lesson Five/ the Fifth Lesson
£100 one hundred pounds
page 21 page twenty-one
page 147 page one hundred and forty-seven/ page one four seven
Room 1502 Room one five 0 two
Channel 6 Channel Six
23℃ twenty-three degrees Centigrade
Bus No.18 Bus number eighteen
Bus (No.) 537 Bus (number) five three seven
Flight FX 1623 Flight FX one six two three
Class 1, Grade 5 Class one, Grade five
专项训练6
正确读出下列号码。
1. page 63 2. Lesson 7 3. Room 101 4. Channel 9 5.100℃
6. $100 7. Bus No.46 8.63177128 9.212 B.C. 10. Flight AF 334
vi.时间表示法
1.表示钟点的方法如下:
1)整点: 7:00- -seven/ seven o'clock
2)先钟点后分钟: 8:05- -eight five 9:30- -nine thirty 10:45- -ten forty-five
3)先分钟后钟点:
半小时及不到半小时的分钟用past。
2:15- -a quarter past two 4:30- -half past four
6:05- -five past six 11:27- -twenty-seven past eleven
超过半小时的分钟用to。
5:45- a quarter to six 9:50- -ten to ten
2.表示年、月、日的方法如下:
1605年一sixteen 0 three 1840年一-eighteen forty
1900年一-nineteen hundred 1937年一-nineteen thirty-seven
2000年一two thousand 2016年- -two thousand and sixteen/ twenty sixteen
1949年10月1日 - October 1, 1949/ October the first, nineteen forty- nine
1 October, 1949/ the first of October, nineteen forty-nine
2008年8月8日 -August 8, 2008/ August the eighth, two thousand and eight
8 August, 2008/ the eighth of August, two thousand and eight
3.表示世纪、年代的方法如下:
20th century- -the twentieth century 1900s/ 1900's- -the nineteen hundreds
21st century- the twenty-first century 1980s/ 1980's- - the nineteen eighties
专项训练7
选择填空。
( )1._______is the first day of a week.
A. Sunday B. Friday C. Saturday D. Monday
( ) 2. There are_______days in March.
A. twenty- eight B. twenty-nine C. thirty D. thirty-one
( ) 3. Friday is_______day of a week.
A. six B. five C. the sixth D. the fifth
( ) 4.- What time is it? - It's_______.
A. two a half B. half past two C. thirty two D. half to three
( )5.We have lunch at_______.
A. Six B. nine C. twelve D. eighteen
( )6.A century is a period of_______years.
A. a thousand B. a hundred C. fifty D. twenty
( )7.We are living in the_______century.
A. Twenty B. twentieth C. twenty-one D. twenty-first
( )8.I get up at_______every day.
A. six clock B. six clocks C. six o'clock D. six hours
( ) 9. My sister was born on_______.
A.9, July, 2013 B. July9, 2013 C.2013, July 9 D.9 July of 2013
( )10. -What is the date today?- It is_______.
A. May the three B. May third C. the three of May D. the third of May
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