We work better than（=over）（不规范说法）ten hours a day．
This parcel weighs thirty grams odd（or and more）.
(10)He will stay here a month or two（or a month or so，one or two months）.
He always has two or three hundred pounds in his pocket．
Friends need not be so many．Two-three（美国说法）good ones are enough．
He owns some thirty or forty houses in this city．
I saw her the last month or two．
We have made progress in this century or two．
There might be six，eight，ten doctors in this clinic．
509 基数词还可以用在下面短语中。
(11)He lost more than a hundred（=a hundred odd）dollars．
He lost more than one hundred（=two，three，or four hundred）dollars．
(12)She has not more than two（=only two）children．
She has no more than two（=only two）children．（表示惊异）
She has not less than a million（=a million or more）pounds．
She has a cool million（=no less than a million，as much as a million）dollars．（表示惊异）
We have climbed a good（or full）five hundred feet．
He is a good（=no less than）six feet tall．
We have worked here thirty long（or old）years．
(13)He doesn't earn（=earns less than）three dollars a day．
The road is not（=less than）500 miles long．
Your cup is not half full．
I did not see five movies in a year．
Rome is not built in a day（=built in many years）.
He has not made mistakes once or twice（=made them many times）.
(14)I will stay in town（from）twenty to thirty days，or（anywhere）between twenty and thirty days．
（15）He may be fined to the tune（or amount）of three hundred dollars．
Sometimes we work anywhere up to twelve hours a day．
(16)There were 287 guests altogether（or in all，all told）．
I paid 84 dollars in sum total（or a total of 84 dollars）.
(17)He studied medicine 22 years running（or on end，at a stretch，in a row）（=in succession）.
I was never discouraged after seven successive（or straight）defeats．
(18)We three learn German．
They（or These，Those，The）four learn Spanish．
Three of the students learn German．（There are other students who don't learn German.）
(19)After receiving 28 five-dollar bills，I bought 54 fifteen-cent stamps and 8 one-pound packages of sugar．（如果两个数字碰到一起，又表示不同东西，较大或复杂数字用数码表示，较小、较简单数字用数词表示）
After receiving five 20-dollar bills．I bought eight 40-cent stamps and ten 18-oz．boxes of oats．
(20)The aforesaid Company borrowed from the aforesaid Bank Three Million Dollars（$3,000,000）at Ten Percent（10％）interest．（在法律文件中，尤其是涉及金钱或财产时，数字常常用两种方式重复表示）
(21)Forty-five dollars will be the lowest price of such shoes．（在句子开头最好用数词而不用数码）
2．序数词
510 序数词构成法。
a．基数词表示“多少”，序数词表示“第几”。序数词有两种构成法。
第一类：在基数词后加-th构成序数词，但one，two，three除外（one，first，two，second，three，third）。
第二类：在名词后加基数词，如Book 3，Room 237。这样用时基数词的意思已经改变。Four books表示几本书，而Book 4（或the fourth book）只是指一本书。Room 320只是指320号房间（一个房间）。
（1）第一类序数词
1st：first（不是oneth）
2nd：second（不是twoth）
3rd：third（不是threeth）
4th：fourth
5th：fifth（不是fiveth）
6th：sixth
7th：seventh
8th：eighth（不是eightth）
9th：ninth（不是nineth）
10th：tenth
12th：twelfth（不是twelveth）
20th：twentieth（不是twentyth）
21st：twenty-first（不是twenty-oneth）
22nd：twenty-second
30th：thirtieth
53rd：fifty-third
79th：seventy-ninth
5,433rd：five thousand four hundred and thirty-third
last：coming after all others in order，opposed to first
（2）第二类序数词
当一个基数词放在它所修饰的名词后面用作序数词时，这个基数词可以是罗马数字，如Ⅵ，Ⅶ，Ⅹ，也可以是阿拉伯数字，如6，7，10。罗马数字多大写，用在比较正式的场合，可以在纪念碑上写日期，或给书面材料的某些部分编号，如Act Ⅲ（第三幕），Article Ⅷ（第八款），Part Ⅴ（第五部分），Appendix Ⅱ（附录二），还可给同名的帝王、主教等编号，如Henry Ⅰ，Henry Ⅱ，Henry Ⅲ，Louis Ⅸ，Louis Ⅹ，Louis Ⅺ。下表对罗马数字（Roman Numerals）和阿拉伯数字（Arabic Numerals）作一对比：
MCMXXCII=M CM XXC II
=1000＋（1000-100）＋（100-20）＋2=1982
511 b．带第一类序数词的表达法。
(1)I studied in the fourth-year class at a school on 24th Street．We usually met in the 6th room on the fourth floor．The only interesting lesson I learned last year was the 12th lesson in the fourth book of Literature，a story of the third world war in the 21st century．As I often played truant，I stood last in my class，but I didn't care．
(2)He has four sons．One is lame，a second is blind，a third is dumb，the fourth is deaf．（可以用one表示第一个，在最后一个前要加the，其他序数词前可加a）
(3)The first（or last）six chapters are interesting．（比six first or six last好）
The next（or other）four chapters are very dull．（比four next or four other好）
(4)He lives on the fourth floor in New York．
He lives on the third floor in London（相当于美国的fourth floor）.
We live on the first（or street）floor．（美式）
We live on the ground floor．（英式）
(5)He sat at the last seat but one（or next to the last seat）.
He is the second best（or the next best）student．
It is the second most beautiful poem，but not the first best one.
(6)To be successful—firstly，you must be healthy；secondly，you must be sincere；thirdly，you must be brave．（现在比较少这样说）
First，…Second，…Third，…（这种说法较普通）
In the first place，…In the second，…
For one thing，…For another，…For a third，…
（在列举理由或事例时可这样说）
512 带第二类序数词的表达法。
(7)Number（or No.，no.，#）397：number three（hundred）ninety-seven，number three nine seven—I live at No．397．The invoice is no．397．My ticket is # 397．
I took bus No．27 to the airport for flight No．483．I entered gate No．32 and took my place at seat No．14．
Nobody takes care of you．Everybody has to take care of number one（=oneself）.
This is number one（=the best）hotel in this city．The boss is number one（=most important）man around here．
(8)I took a bus to the post office，and then I returned to my office at 476th Street，Suite 405．
We received from you Order No．2824 for the Cooker Model No．0842，and Check No．1932．（在商业文书中编号前面的名词通常都大写。“No．”最好省略，如Order 2824，Invoice 5864）
There are some special features in this history book．In Sections 4-6（or the 4th to 6th sections）of Chapter 5（or the 5th ch．），for example，we have Diagram 6（or the 6th diag．）and Exercise 10（or the 10th ex．），which enable the readers to understand the subject better；and Question 12（or the 12th question），which induces them to make a further study．（编号前的名词可以小写）
Today I read Luke 15-20（=in the third Gospel，chapter 15-chapter 20）and John 6：16-40（=in the fourth Gospel，chapter six，verse 16-verse 40），and also Paul 15：36-18：28．
(9)In Part IV（or the fourth part），Volume II（or the second volume）of the History of England，there is Plate X（or the tenth plate）which illustrates the costumes of the Elizabethan age and Table IX（or the ninth table）which lists the works of Shakespeare．But what interests me is the story of World War II（or the Second World War）when Edward VI（or Edward the Sixth）ruled Great Britain．（罗马数字前的名词应大写）
(10)In the months February—June［or from February to June inclusive，from February through June（美国说法），between January and July］（但不能说from February June，between February to June），from 1950 to 1955 inclusive（or from 1950 through 1955，in 1950-1955），Lee lived in Peru．
Chapters 8，12，15（or Chs．8，12，15）are the most important parts of this book，especially paragraphs 4-8（or pars．4-8）on pages 220-238（or pp．220-238），which say something nobody dare say．
If you buy $50-$500（or fifty to five hundred dollars）（但不能写$50-500）worth of merchandise，we can allow 5％-20％（or 5 to 20 percent）discount off list prices．
(11)My address is 2457 24th. street，Room 3825 San Francisco，CA 94168，Phone number is 1415-864-7318．Account number is 0504-203863．（在这类编号中一概不加逗号，但有时中间可加连字号 “-” 或留空）
序数词在非正式文体中用数字（如2nd，6th）写出，也可用文字（如second，sixth）写到tenth为止。在正式文体中，用数词写到hundredth为止，如the fifth floor，the sixty-fifth anniversary。
3．比例、倍数、乘方、方根、分数、小数表示法
513 a．比例
There are in this city five Asians for one westerner．
He earned 700 dollars per month to Mary's 600．
He spent 500 dollars as compared with Mary's 200．
He spent 500 dollars as against Mary's 200．
One in ten（or in a hundred）persons is unselfish；such a person is in the minority．
One person in ten is unselfish．
Nine persons out of ten are selfish；such persons are in the majority．
（Out）Of these 45 stories，40 are about love．
b．倍数
He got double（or twice）my pay．
You have paid three times the usual price．（thrice很少用）
You are twice his age．
It is worth twice the value．
This house is ten times bigger than（or ten times as big as）that one．
This is as long again（or twice as long）as that．
This is half as long again as（or one and a half times longer than）that．
The price doubled（or tripled）in ten years（or between 1978 and 1988）.
Between 1979 and 1988 the output of coal rose by 250％．
Rice production in this year dropped 25 percent（or grew 1.3-fold）.
Three times five is（or are）fifteen．Three multiplied by five is fifteen．
He did it once or twice（or twice or thrice，two or three times）（=occasionally）.
Think twice（=Think and think again）before you act．
c．乘方，方根
105：the fifth power of ten，ten raised to the fifth power，ten to the fifth
102：ten square
103：ten cube
：the square root of 214
：the cube root of 214
：the fourth root of 214
d．分数
1/2：half—half a day，half the distance，half your weight
1/3：a third—a third of a second，a third of the apple，a third of the trouble
1/4：a quarter—a quarter of a mile，a quarter of the cost
1/8：one eighth—one eighth of the area，one eighth the area
3/7：three sevenths—three sevenths of the population，three sevenths the population，three sevenths of a mile
58/94：fifty-eight ninety-fourths，fifty-eight over ninety-four
5/100：5％，five percent，five per cent—five percent discount
360/820：three hundred sixty over（or by）eight hundred twenty
：8-3/10，eight and three tenths
：1-1/4，one and a quarter—one and a quarter feet，one foot and a quarter
He has waited five hours and a half（or five and a half hours）．
Three-tenths of forty is twelve．
This is half copper and half silver．
Let's divide it fifty-fifty（=equally）.
Let's cut the cake in half（or in halves，into halves，in two）．
e．小数
16.104：sixteen point（or decimal）one o four．（在多数欧洲国家，可用逗号代替小数点）
0.32：nought（or zero）point three two．（写出时最好加0，在口语中nought或zero可以省略）
8,765.643 286 733 37：（如果小数点后有许多位数，每三位数后可留一个空，而不宜加逗号）
4．长度及重量表示法
514 a．长度
The Mississippi River is 2,350 miles long．
This redwood is as high as three hundred feet．
This room is ten feet wide（or in width）twenty feet long（or in length），nine feet high（or in height）.
The trunk is two feet thick（or in diameter），six feet round（or in circumference）.
The sea is a thousand feet deep（or in depth）．
He stands five foot two（不要用five feet two）．
What size pants do you wear?
I have seen a lot after five thousand miles of journey（or five thousand miles' journey，five thousand miles journey，a 5,000-mile journey，a journey of five thousand miles），but have learned very little．
It is a 30-mile-long pipe（or a pipe thirty miles long）．
The photo is 8 by 10 inches（or 8×10）.
The room is fifteen feet seven（inches）by twenty feet nine（inches）（or 15 ft．7 in．×20 ft．9 in.，15'7”×20'9”）．（在非正式文体中可用foot代替feet）
This house covers an area of 1,800 square feet．Behind it is a yard of half an acre．
Four feet square is equal to sixteen square feet，but they may be different in shape．
Every day I drink two quarts of water and a quart of milk，and use about twenty gallons of water when I take a bath.
b．重量
This letter weighs two ounces（or 2 oz．）.
Five pounds of apples doesn't cost two dollars．
What is the price of a thousand tons of coal?
I bought six pounds' weight（or six pounds weight）of sugar.
This store sells five hundred weights（-s may be omitted）（or cwt．）of vegetables every day．
He weighs ten stone（没有-s）（英制：l stone=14 pounds）.
5．时间表示法
515 a．世纪
There have been two world wars in the twentieth century（=1901-2000）.
In the early（or mid-，late）fifteenth century（=1401-1500），there emerged great navigators like Zheng He，Diaz and Columbus．
This year is 1993，and the last century（=100 years）was 1893-1992．
Mohammed（A.D.570-632），born in Mecca，Arabia，was the founder of Islam．（A．D．表示公元后，即耶稣出生后。公元后1-1000年都可用A．D．再往后就不要用了，如不要说A.D.1087）
Li Bai（700-762 A.D.）was a great Chinese poet．（A.D.可加在年份后面）
Li Bai was a poet in the eighth century A．D．（A.D.可加在某一世纪或时期后，但不能加在前面）
Confucius（551-479 B.C.）is the first teacher of China．（B．C．表示公元前，是Before Christ的缩写形式，只能加在年份后面）
注：1989应读成nineteen（hundred）eighty-nine；
A．D．678应读成A．D．Six（hundred）seventy-eight；
430 B．C．应读成four（hundred）thirty B．C．
b．年代
They met again after ten years（or ten years' time，ten years time，a space of ten years，a decade）.
They got married after ten years of war［or（a）ten years' war，ten years war，the ten-year war，a war of ten years，a decade of war］．
He wrote his novels in the 1940s（or the '40，the nineteen forties，the forties，the fourth decade of the twentieth century）（=1940-1949）.
His works were published in the early（or mid-，late）six-ties（=1960-1962，1963-1966,1967-1969）.
c．日期
If today is 15 July，then
yesterday
was
14 July the day before
yesterday
was
13 July 3 days ago
was
12 July a week
ago today
was
8 July
tomorrow
is
16 July the day after
tomorrow
is
17 July 3 days
from now
is
18 July a week
from today
is
22 July
This day week and today week=a week ago today or a week from today.
d．年，月，日
He arrived in Japan on September 6［or 6 September，September 6th，6th September，September the sixth，the sixth（day）of September］，1978．（美国最通用的形式为September 6,1978，可缩写为Sept．6，1978，甚至缩写成09-06-'78或9-6-78。英国用6 September时较多，可缩写成6 Sept.，1978，甚至缩写成06-09-'78或6-9-78。在两个国家，连字号 “-” 都可以“/”代替，如9/6/78。但在口语中-th，-st，-nd这类词尾仍要读出）
Mr．and Mrs．Dean Black request the honour of your presence at the marriage of their daughter Jan to Dr．Glen White on Sunday，the eighth day of July，A．D．（or in the year of our Lord）one thousand nine hundred（or nineteen hundred）and seventy-nine．（在严肃的语言或法律文件中，日期有时要完整写出）
“What day of the month is today?” “February the second．”
“What day of the week is today?” “Wednesday．”
e．小时
4：00—four（o'clock）（钟点数后的0最好省掉，特别是在非正式的材料中。冒号也可以句号代替，如4.00。如果时间是四点整，我们可以说four o'clock或只说four）
4：05—five（minutes）past four（英式），five（minutes）after four（美式），four five（普通说法）（分钟数不到10的，前面需加0）
4：15—a quarter past four（英式），a quarter after four（美式），four fifteen（普通说法）
4：50—ten（minutes）to five（英式），ten（minutes）of（or before）five（美式），four fifty
4：45—a quarter to five（英式），a quarter of（or before）five（美式），four forty-five
2：52—eight minutes to（or from）three（minutes这词应说出，只有在five，ten，twenty，twenty-five后不需说出）
8：30 a．m.—eight thirty in the morning
4：15 p．m．—four fifteen in the afternoon
7：50 p．m．—seven fifty in the evening
11：05 p．m．—eleven five at night
12：10 p．m．—twelve ten at night
