來(lái)源:網(wǎng)絡(luò)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(yǔ)
Thirty of them are Party members.他們之中的三十人是黨員。
2.作賓語(yǔ)
Please pass me the second.請(qǐng)遞給我第二個(gè)。
3.作定語(yǔ)
The nine boys are from Tianjin.這九個(gè)男孩子是天津人。
4.作表語(yǔ)
Six plus four is ten.六加四等于十。
5.作同位語(yǔ)(只限基數(shù)詞)
We four will go with you.我們四個(gè)人將和你一起去。
B.用法總結(jié)
(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(gè)位數(shù)上加后綴-teen構(gòu)成,并有兩個(gè)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(gòu)成。
twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety
4. 21-29由十位數(shù)20加個(gè)位數(shù)1-9構(gòu)成,十位和個(gè)位之間加連字符號(hào)"-",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?gòu)暮笙蚯皵?shù),每三位數(shù)加一個(gè)",";第一個(gè)","號(hào)前為thousand(千),第二個(gè)","號(hào)前為million(百萬(wàn))……,然后再逐段表達(dá)。
②三位數(shù)數(shù)詞要在百位和十位(若無(wú)十位則和個(gè)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(gè)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?jǐn)?shù)、小數(shù)、百分?jǐn)?shù)的表示方法:
1.倍數(shù):time(s)
This room is three times as large as that one.這個(gè)房間有那個(gè)房間三個(gè)大。
Three threes are nine. or Three times three is nine.三三得九。
2.分?jǐn)?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(shí),分母(序數(shù)詞)應(yīng)變?yōu)閺?fù)數(shù)。
三分之一,one third, a third;五分之三,three fifths
數(shù)短語(yǔ)作主語(yǔ)時(shí),謂語(yǔ)的數(shù)由of后面的名詞來(lái)決定,名詞為可數(shù)名詞復(fù)數(shù),則謂語(yǔ)用復(fù)數(shù);名詞為不可數(shù)名詞,謂語(yǔ)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(diǎn)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(diǎn)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?jǐn)?shù):
百分號(hào)%讀作percent
eg.
5%讀作five percent
(四)算式表達(dá)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(jiàn)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(yè)碼的數(shù)字較長(zhǎng),通常用基數(shù)詞。
2.
第
長(zhǎng)安街
電話號(hào)碼:
十一路公共汽車:
3.
(
eg.
公元
(
eg.
5
(
eg.
8
(
eg.
二十世紀(jì)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(wàn)的人參觀了這座城市。
(六)需注意的問(wèn)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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