來源:網(wǎng)絡資源 2023-07-08 16:27:17
(一)數(shù)詞的分類:
表示數(shù)目多少或順序的詞叫數(shù)詞。數(shù)詞分為基數(shù)詞和序數(shù)詞。
表示數(shù)目多少的數(shù)詞叫基數(shù)詞。one,two
表示順序次第的數(shù)詞叫序數(shù)詞。the first(第一)、the second(第二)(二)數(shù)詞的用法:
1.作主語
Thirty of them are Party members.他們之中的三十人是黨員。
2.作賓語
Please pass me the second.請遞給我第二個。
3.作定語
The nine boys are from Tianjin.這九個男孩子是天津人。
4.作表語
Six plus four is ten.六加四等于十。
5.作同位語(只限基數(shù)詞)
We four will go with you.我們四個人將和你一起去。
B.用法總結
(一)基數(shù)詞的表示方法:
1. 1-12的基數(shù)詞:
one, two, three, four, five, six, seven, eight, nine, ten,eleven, twelve
2. 13~19的基數(shù)詞,在個位數(shù)上加后綴-teen構成,并有兩個重音。
thirteen, fourteen, fifteen, sixteen, seventeen, eighteen,nineteen
3. 20~90等十位數(shù)由2-9加后綴-ty構成。
twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety
4. 21-29由十位數(shù)20加個位數(shù)1-9構成,十位和個位之間加連字符號"-",其他十位數(shù)以此類推。
21 twenty-one、44 forty-four、98ninety-eight
5.多位數(shù)的讀法
①從后向前數(shù),每三位數(shù)加一個",";第一個","號前為thousand(千),第二個","號前為million(百萬)……,然后再逐段表達。
②三位數(shù)數(shù)詞要在百位和十位(若無十位則和個位)之間加and。
45,632,798讀作
forty-five million, six hundred and thirty-two thousand, sevenhundred and ninety-eight
(二)序數(shù)詞的表示方法:
序數(shù)詞=基數(shù)詞+th,但以下幾個特殊:
one-first, two-second, three-third, five-fifth. eight-eighth,nine-ninth, twelve-twelfth, twenty-twentieth ……, a hundred-a hundredth
(三)倍數(shù)、分數(shù)、小數(shù)、百分數(shù)的表示方法:
1.倍數(shù):time(s)
This room is three times as large as that one.這個房間有那個房間三個大。
Three threes are nine. or Three times three is nine.三三得九。
2.分數(shù):
分子用基數(shù)詞表示,分母用序數(shù)詞表示,分子為2以上時,分母(序數(shù)詞)應變?yōu)閺蛿?shù)。
三分之一,one third, a third;五分之三,three fifths
數(shù)短語作主語時,謂語的數(shù)由of后面的名詞來決定,名詞為可數(shù)名詞復數(shù),則謂語用復數(shù);名詞為不可數(shù)名詞,謂語用單數(shù)。
A third of the land is covered by forests.
Two thirds of the workers are working hard.
3.小數(shù):
小數(shù)點前的基數(shù)詞與前面所講的基數(shù)詞讀法完全相同,小數(shù)點后面則須將數(shù)字一一讀出。
1.25讀作one point two five
0.56讀作naught point five six或zero point five six
4.百分數(shù):
百分號%讀作percent
eg.
5%讀作five percent
(四)算式表達法:
1.加法
A+B=C → A plus B is C. or A and B is C.
2.減法
A-B=C →A minus B is C. or B from A is C.
3.乘法
A×B=C → A times B is C. or A multiplied by B is C.
4.除法
A÷B=C → A divided by B is C.
5.大于
A>B → A is more than B.
6.小于A
(五)常見數(shù)詞的表示法及讀法
1.
第一章:
第二節(jié):
第三課:
第
第
注意:如果頁碼的數(shù)字較長,通常用基數(shù)詞。
2.
第
長安街
電話號碼:
十一路公共汽車:
3.
(
eg.
公元
(
eg.
5
(
eg.
8
(
eg.
二十世紀九十年代:
4. hundred, thousand, million
hundred, thousand, million
eg.
t
hundreds of
Thousands and thousands of people have visited the city.
成千上萬的人參觀了這座城市。
(六)需注意的問題:
1.
eg.
a four-year-old boy
2.
eg.
the first three questions
the last five minutes
3.
eg.
one and the only
be on all fours
Two's company, three is a crowd
one and the same
ten to one
talk nineteen to the dozen
in ones and twos
first of all
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