【正文】
Numerals 構成規(guī)律 基數(shù)詞 序數(shù)詞 1- 12有各自獨立的形式。 1319都是相對應 3- 9加上 teen構成,特殊拼寫的 詞有 thirteen, fifteen, eighteen。 20- 90都以 ty結尾,特殊拼寫的有 twenty, thirty, forty, eighty。 21- 99,整數(shù)十位數(shù)+各位數(shù),中間有“-”。 百位數(shù),由百位數(shù)+ and+兩位數(shù)組成。 …… 1- 3分別為 first,second,third 。 4- 19都是在后面加上 th,特殊的有 fifth,eighth, ninth,twelfth。 20- 90把 y變成 ie然后加 th,如 twentieth。 21- 99的序數(shù)詞變后面的各位數(shù)。 序數(shù)詞可以用縮寫,如 1st, 2nd, 3rd ,4th… 一、數(shù)詞的分類 基數(shù)詞 序數(shù)詞 基數(shù)詞 序數(shù)詞 one twelve two twenty three twentyone four forty five one hundred six one hundred and five eight one hundred and twentynine nine nieen 一 .基數(shù)詞、序數(shù)詞 first second third fourth fifth sixth eighth ninth twelfth twentieth twentyfirst fortieth one hundredth one hundred and fifth one hundred and twentyninth nieenth 二 . 讀法(基數(shù)詞) 百位和十位間用 and 連接 , 十位和個位間用 連接 three hundred and twentyone 321 右往左數(shù) ,三位一組 ,逗號隔開 .依次是 thousand(千 ) million (百萬 ) billion (十億 ) four thousand three hundred and twentyone seven million,six hundred and fifty four thousand three hundred and twentyone 7,654,321 1,987,654,321 4321 4,321one billion nine hundred and eightyseven million,six hundred and fiftyfour thousand three hundred and twentyone ,但是特殊情況也有 復數(shù) 的用法: : in one’s forties4149 : in the 1930s : They arrived in twos and threes. : Nine of them are from Greece. They work forty hours a day. 副詞 ,可省略冠詞。 When did you first see him?Which horse came in first? 形容詞 用作 定語 。 前 多加 the,強調 順序 : The first part. the third floor. 若加 a表示“ 又一,再一 ”,不強調順序 。 可用 another 代替。 They had a second child in 1988. 三 .數(shù)詞的基本用法 1. hundred thousand (具體數(shù)字 )