The expression of numbers in English
1,884,400
Numerals: mainly divided into cardinal numbers and ordinal numbers.
One: the classification of numerals
1. Cardinal words are called cardinal words. Its form is as follows:
A. From1-10
One, two, three, four, five, six, seven, eight, nine, ten.
B. From11—19
Eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen.
Except for eleven, twelve, thirteen, five and eighteen, which are special forms here, fourteen, sixteen, seventeen and nineteen are all composed of the suffix -teen after their single-digit forms.
C. From 21-99
Except twenty, thirty, forty, fifty and eighty are special forms of dozens of integers, six, seventy and ninety are all composed of their single-digit forms with the suffix -ty. When representing dozens of words, add a hyphen "-"between the dozens of words and the unit basic word.
2 1 21
7676
D. hundred digits
Adding "hundred" to the number-based morpheme means hundred, and adding and between dozens and hundreds.
10 1 101
320 320
648 648
E. Above thousand digits
Counting from the right end to the left end of the number, add a comma ","to every three digits. Starting from the right, the number before the first ","will be followed by the second ","and the number before the third ","will be followed by millions. Then, section by section, the maximum number between two commas is in hundreds.
26482648
16,250,064 16,250,064
5237 166234 Five billion two hundred and thirty-seven million one hundred and sixty-six thousand two hundred and thirty-four
F cardinal numbers cannot be expressed in the plural form of hundreds, thousands, millions or billions; However, when the cardinal words represent inaccurate numbers, such as hundreds, thousands, two or three, the cardinal words appear in the plural form.
There are hundreds of people in the hall.
There are hundreds of people in the hall.
Thousands of people visit the Qin Terracotta Warriors Museum every day.
Thousands of people come to visit the Qin Military Museum every day.
They went to the theatre in twos and threes.
They came to the theatre in twos and threes.
G. indicates a person's exact age or age, which is expressed in the plural form of dozens.
He became a professor in his thirties.
He became a professor in his thirties.
She died of lung cancer in her forties.
She died of lung cancer in her forties.
That was in the 1960 s.
That was in the 1960s.
H. the syntactic function of cardinal words
Original words can be used as subject, object, attribute, predicative and appositive in sentences.
They opened the box happily.
The two men opened the box happily. Become a theme
I need three altogether.
I always need three. Become an object
Four students are playing volleyball outside.
Four students are playing volleyball outside. attribute
We are sixteen.
We are 16 people. Make a prediction
The three of them tried to finish the task before sunset.
The three of them tried their best to finish the task before sunset. appositive
2. Ordinal number
Words that indicate order are called ordinal numbers. Main forms of ordinal numbers:
A. From the first to the nineteenth
Among them, one-first, two-second, three-third, five-fifth, eight-eighth, nine-ninth and else twenty-eighth are special forms, and other ordinal numbers are all formed by adding "th" after their corresponding cardinal words. For example: six six, nineteen-nineteen.
B. From 20th to 99th
The form of decimal integer is formed by changing the ending letter Y to I and adding "eth" before its corresponding cardinal word.
Twenty-twenty-three-thirty
When the decimal system is expressed, it is expressed in the form of decimal cardinal words plus hyphen "-"and unit ordinal number.
Thirty-first session
The fifty-sixth session
Article 73, paragraph 7
ninety-ninth
C. More than 100 ordinal numbers
It is expressed in the form of cardinal words, and the suffix is changed to ordinal form.
Article 121
The one thousand three hundred and twentieth time
D. abbreviated form of ordinal number
Sometimes ordinal numbers can be expressed by abbreviations. The main abbreviation is.
First-first, second-second, third-third.
Fourth-fourth sixth-sixth twentieth-twentieth
Twenty-third-twenty-third
Among them, the first, second and third are special forms, and others are * * * numbers followed by th.
E. syntactic function of ordinal number
Ordinal numbers can be used as subject, object, attribute and predicative in sentences.
The second one is what I really need.
The second one is what I really need. Become a theme
He chose the second one.
He chose the second one. Become an object
We will carry out the first plan.
We will carry out the first plan. attribute
She is the second in our class. She is the second in our class. Make a prediction
Note: when ordinal numbers are used, the definite article the is usually added before it; But if the indefinite article A or an appears before the ordinal number, it means "You-"and "You-".
We will check it again.
We have to read it again.
We have tried it three times. Do we have to try a fourth time?
We have tried it three times. Must we try again for the fourth time?
In addition, cardinal words can also indicate order. Just put the cardinal word after the noun it modifies, and there is no need to add a definite article.
Lesson One-Lesson One
Page 5-Page 55
Room 21-Room 2121
Second: time characterization
1. indicates to add 0 o'clock time, which can be omitted with the cardinal word.
Five o'clock is pronounced five or five o'clock.
2. It means that after a few minutes, after one minute, add the past and then add the hour.
five past seven
half past six
a?quarter?past?eight
Seven minutes past eight is seven. 3. It indicates how many minutes it is, add it after minutes, and then add hours.
Ten minutes to eight is eight seventy.
A quarter to twelve twenty fifteen.
Twenty minutes to six is six fifty.
In daily life, the following simple methods are often used to express time.
Read the hours and minutes respectively.
6:3 1 pronounced 631
Pronunciation is 10: 26.
14:03 pronounced as 1403.
16: 15 is pronounced 65.
18:30 is read as 18: 30.
Read 23:55 at 23: 55.
Note: most of the time on the timetable is expressed in 24 hours, so it is not necessary to use a.m. for morning and p.m. for afternoon.
Three: year and month symbols
1. century can be expressed by definite article+ordinal number+century, or definite article+decimal number+s.
The sixth century ad.
8th century A.D.18th century.
1900 20th century
1600 in the 17th century
Here, a century represented by a hundred-digit integer is a century longer than the hundred-digit itself.
2. Age consists of the plural form of the century plus ten integers represented by definite articles and cardinal words.
In the 1930s or 1990s.
The 1930s
In 1860' in the dimension of19th century or in eight dimensions.
In the 1860s.
When Marx was in his fifties, he found it important to study the situation in Russia, so he began to learn Russian.
In the 1970s, when Marx was in his fifties, he found it important to study the situation in Russia and began to learn Russian.
3. Indicates the early, middle and late stages of an era. The beginning of the year, the middle of the year and the end of the year can be added before the year defined in the article.
In the early 1920s.
In the mid-1950s.
4. Year, month and day symbols
A. The year is expressed by cardinal words, which are generally written as * * * numbers. You can read hundreds or centuries and years.
1949 is pronounced as 90 very happy and 49 or 19 49.
1800 is pronounced as 1800.
253 is pronounced as two forgotten sums 53 or two 53.
1902 is pronounced as 920 or 920.
To indicate which year, the preposition in is usually added before the number of years. When using year, year comes before the number.
253 BC, 253 BC.
However, in usually adds a * * * number to indicate the year.
B. month, which month is represented by the preposition in plus the first capitalized month word. For example: May is May; July is July. For simplicity, when months are used with dates, they are often abbreviated. Except May, June and July, all other months are represented by their first three letters, except September.
January-January-February-February
March-March, March and April.
August.-August. August
September-September
October-October October
1 1 month-1 1 month
1feb-1feb
Note: The dot after the abbreviated form here cannot be omitted, because it is a symbol indicating the abbreviated form.
C. the date is expressed by definite article+ordinal number. When is the preposition on added?
National Day is 10/day.
National Day is October 1st. The pronunciation is October 1st.
National Day is on 10/day.
The pronunciation of May 5th is May 5th.
It can also be expressed as 5thof May.
March 1st is pronounced as March 1st or March 1st.
When expressing an ambiguous and imprecise time, such as century, decade, year and month, use the preposition in to express a specific and exact date. The preposition on means morning, afternoon and evening, usually before the preposition in. However, when there are modifiers before and after these words and they are limited to a certain morning, afternoon or evening, the preposition in should be changed to on. Modifiers here can be prepositional phrases, nouns, adjectives, attributive clauses, etc.
On a cold morning, the old man died alone in his house.
On a cold morning, the old man died alone in his house.
I don't want to be disturbed when I study at night.
I don't want to be disturbed when I study at night.
The accident happened on the afternoon of July 7th.
The accident happened on the afternoon of July 7th.
We will have a comprehensive test on Monday morning.
We will have a test on Monday morning.
Four: addition, subtraction, multiplication and division representation
1. "add" is represented by plus sign, and or add; "Equality" is expressed by words such as is, make and equal.
2+3=? What's two plus three?
2+3=5
Two plus three equals five.
Two plus three equals five.
Two plus three equals five.
Two plus three equals five.
Three plus two equals five.
Two plus three equals five
2. "Subtract" or "Take"
10-6=? What's ten MINUS six?
10-6=4 Ten minus six equals four.
Ten subtracts six, and the remainder is four.
Ten MINUS six equals four.
Ten MINUS six equals four.
3. "Multiply" is expressed by time verb or multiplication.
3X4=？ How much is three times four?
3X4= 12 Three times four equals twelve.
Three times four equals twelve.
Three times four equals twelve.
Three times four equals twelve.
4. "Divide" is expressed in the past participle form of Divide.
16÷4=? What is sixteen divided by four?
16÷4=4 Sixteen divided by four equals four.
Sixteen divided by four equals/equals/equals four.
Sixteen divided by four equals four.
Five: the fractional representation system
1. The fraction is expressed by cardinal words and ordinal numbers. The radix is the numerator and the ordinal number is the denominator. Except that the molecule is "1", in other cases, the ordinal number should be in the plural form.
Three quarters or three quarters.
A third or a third.
Twenty-five twenty-four
3 1/4 three and a quarter or three and a quarter
1/2 and a half
1/4 quarter or quarter
1 1/2 one and a half years old.
1 1/4 one and a quarter
2. When the score is followed by a noun, if the value expressed by the score is greater than 1, the noun is plural; Less than 1, singular noun.
1 1/2 hours an hour and a half is read as an hour and a half.
2 3/4 meters 2 3/4 meters pronounced as 2 3/4 meters.
4/5 m 4/5 m
5/6 inch 5/6 inch
3. Expression of "n power": ordinal number is used as index and radix is used as radix.
10 to the 7th power, and every day to the 7th power.
The power of 65438 of 6+the tenth power of 00 and the tenth power of 6.
Six: decimal representation
1. Decimals are expressed by cardinal words, with the decimal point as the boundary and the number to the left of the decimal point as the unit, indicating integers, and the numbers are read together; The number to the right of the decimal point is the unit, indicating the decimal point, and the numbers are read separately; The decimal point is read as point, o is read as zero or o [ou], and the integer part can be omitted when it is zero.
0.4 zero point four or 0.4 zero point four
10.23 ten point two thirty point two three
Twenty-five point six seven twenty-five point six seven
three past one
2. When the numerical value is greater than 1, the nouns after the decimal point are plural, and when the numerical value is less than 1, the nouns after the decimal point are singular.
1.03m1.03m 0.49 ton 0.49 ton
1.5t1.5t.
Seven: percentage representation system
Percent is expressed by radix+percentage.
Fifty percent
Three percent, three percent
0. 12% 0.12%
Here, the first half of percent per means "every" and the second half of cent means "hundred", so the plural form of percent is not used.
Eight: quantitative representation
1. stands for length, width, height, area and so on. It is expressed by cardinal words+unit words such as meters, feet, inches and kilograms+adjectives of length, width and height. Or cardinal words+unit words +in+ nouns such as length, width, height and weight.
Two meters long or two meters long.
Three feet tall or three feet tall.
Four inches wide or four inches wide.
This box weighs 2 kilograms.
This box weighs two kilograms.
Xi city wall width12m, height12m.
Xi' an city wall is12m wide and12m high.
2. When expressing time and distance, use the possessive form of nouns and numerals as attributes.
Five minutes walk.
It's a five-minute walk.
It is an hour's drive from my hometown to our university.
It is an hour's drive from my hometown to our university.
Or: It takes an hour's drive from my hometown to our university.
It is three kilometers from our campus to the bell tower.
It is three kilometers from our campus to the bell tower.
3. When the temperature is expressed, the temperature below zero is expressed by MINUS zero, and the temperature is expressed by the cardinal word+degree+unit word Celsius or Fahrenheit.
Thirty-six degrees is still thirty-six degrees. Thirty-six degrees.
Four degrees below zero centigrade or four degrees below zero centigrade.
Water freezes at 32 degrees Fahrenheit.
Water freezes at 32 degrees Fahrenheit.
Water boils at 100 degrees Celsius.
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