Main component is   numeral base word and foreword numeral two kinds.
One, the classification of numeral
1. Base word
State numerary word calls base statement. Its form is as follows:
A. From 1 -- 10
One, two, three, four, five, six, seven, eight, nine, ten.
B. From 11 -- 19
Eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen.
Here divides Eleven, twelve, thirteen, fifteen, eighteen is special form outside, fourteen, sixteen, seventeen, nineteen is by its formal hind adds a digit suffixal - Teen is formed.
C. From 21 -- 99
Integral a few in divide Twenty, thirty, forty, fifty, eighty is special form outside, sixty, seventy, ninety is his formal hind adds a digit suffixal - Ty is formed. Express a few when, in a few and hyphen is added between base morphology type " - "
21 Twenty-one
76 Seventy-six
D. 100 digit
Type of several base morphology is added " Hundred " , express hundreds of, in a few with 100 add And.
101 A Hundred And One
320 Three Hundred And Twenty
648 Six Hundred And Forty-eight
E. 1000 digit above
From right end of the number towards the left is carried several cases, every 3 digit add a comma " , " . From right begin, the first " , " Thousand is added after the number before, the 2nd " , " Million is added after the number in front, the 3rd " , " Billion is added after the number before. Next one expresses respectively, the largest number between two comma is 100 digit form.
2, 648 Two Thousand Six Hundred And Forty-eight
16, 250, 064 Sixteen Million Two Hundred And Fifty Thousand Sixty-four
5, 237, 166, 234 Five Billion, two Hundred And Thirty-seven Million, one Hundred And Sixty-six Thousand, two Hundred And Thirty-four
F. When base word is showing exact number, cannot use 100, 1000, 1 million, the plural form of billion; But, state when base word inaccuracy cuts a number, if become 100, by tens of thousands, when in twos and threes, base word appears with plural form.
There Are Hundreds Of People In The Hall.
There is many person in the hall.
Qin Terra-Cotta Warriors And Horses Every Day of 　 of Thousands And Thousands Of People Come To Visit The Museum Of.
Have everyday by tens of thousands the person will visit museum of Qin Bing Ma Chong.
They Went To The Theatre In Twos And Threes.
Ground of their in twos and threes came a theater.
G. The inaccuracy that shows a person cuts age or time, express with the plural form of a few.
He Became A Professor In His Thirties.
He became a professor when more than 30 years old.
She Died Of Lung Cancer In Forties.
She 40 come die at lung cancer when year old.
It Was In The 1960s.
That is in 20 centuries 60 time.
H. The syntax function of base word
Base word is in sentence in can make subject, object, attributive, predicative, appositive.
The Two Happily Opened The Box.
Two people opened a box gladly. (make subject)
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