眾所周知,,在雅思寫(xiě)作的圖表作文部分,,經(jīng)常要求考生對(duì)數(shù)字做出描述,而在雅思的聽(tīng)力部分,,也經(jīng)常會(huì)涉及對(duì)數(shù)字的聆聽(tīng)和拼寫(xiě),,因此,考生一定要系統(tǒng)掌握數(shù)詞的讀法及寫(xiě)法,。數(shù)詞是表示數(shù)目的多少或順序的詞,,分為基數(shù)詞和序數(shù)詞。其中,,表示數(shù)目多少的數(shù)詞叫基數(shù)詞;表示順序的數(shù)詞叫序數(shù)詞,。
(1)表示二十以上的十位數(shù),要在個(gè)位數(shù)與十位數(shù)之間加連字符號(hào),,如:72=seventy-two;表示百位數(shù),,要在百位數(shù)與十位數(shù)之間加and,如:131=one/a hundred and thirty-one;如果十位數(shù)是零,,則在百位數(shù)和個(gè)位數(shù)之間加and,,如:508=five hundred and eight。
(2)書(shū)寫(xiě)千位數(shù)以上的阿拉伯?dāng)?shù)字,,從后往前每隔三位數(shù)用一個(gè)分節(jié)號(hào),,讀法是從右往左數(shù),三位數(shù)一個(gè)逗號(hào),,從右數(shù)第一個(gè)逗號(hào)讀thousand(千),。如: 1,000 =one/a thousand 10,000=ten thousand 100,000=one/a hundred thousand 從右數(shù)第二個(gè)逗號(hào)讀million(百萬(wàn)),。如:1,000,000=one/a million10,000,000=ten million 100,000,000=one/a hundred million 從右數(shù)第三個(gè)逗號(hào)讀billion(十億)。如: 1,000,000,000= one/a billion 10,000,000,000=ten billion 100,000,000,000=one/a hundred billion 需要注意的是hundred,thousand,million,billion等詞前面有具體數(shù)字或several修飾時(shí),,不加-s,。如:The magazine has two million readers.這本雜志有200萬(wàn)的讀者。
如果不與數(shù)詞或several連用,,則可以以復(fù)數(shù)形式出現(xiàn),表示“數(shù)以百計(jì)”,、“成千上萬(wàn)”等,。如:hundreds of people 數(shù)百人;thousands upon thousands成千上萬(wàn);hundreds of thousands of幾十萬(wàn),無(wú)數(shù),。 2.倍數(shù)的表示方法(1)用…times表示,。如: My room is three times as large as yours. 我的房間是你的三倍大小。 (2)如果表示“是……的兩倍”,,一般用twice,。如: My room is twice as large as yours.我的房間是你的兩倍大小。
(3)用-fold表示,。如: The value of the stock has increased two-fold since we bought it. 股票的價(jià)值已經(jīng)漲至我們購(gòu)買(mǎi)時(shí)候的兩倍,。
(4)用%表示。如: The collection of our school library is 200% up compared with 1998. 我們學(xué)校圖書(shū)館藏書(shū)量與1998年相比增長(zhǎng)了一倍,。
(5)用double(翻一番),,triple(三倍于)等詞表示倍數(shù)。如: Many things now cost doublewhat they did a few years ago. 許多東西比數(shù)年前貴了一倍,。 In the past five years the company has tripled its sales. 過(guò)去五年中,,該公司銷(xiāo)售量增至三倍。