基数词和序数词对照表.doc

基数词和序数词对照表 基数词 序数词 0 zero/nought/nothing1 one1st first2 two2nd second3three3rd third4 four4th fourth5 five5th fifth6 six6th sixth7 seven 7th seventh 8 eight 8th eighth 9 nine 9th ninth 10 ten 10th tenth 11 eleven 11th eleventh 12 twelve 12th twelfth 13 thirteen 13th thirteenth 14 fourteen 14th fourteenth 15 fifteen 15th fifteenth 16 sixteen 16th sixteenth 17 seventeen 17th seventeenth 18 eighteen 18th eighteenth19 nineteen 19th nineteenth 20 twenty 20th twentieth 21 twenty-one 21st twenty-first 30 thirty 30th thirtieth 40 forty 40th fortieth 50 fifty 50th fiftieth 60 sixty 60th sixtieth 70 seventy 70th seventieth 80 eighty 80th eightieth 90 ninety 90th ninetieth 100 a hundred 100th hundredth 101 a hundred and one 101st hundred and first 1,000 a thousand 1,000th thousandth 1,001 a thousand and one 1,001st thousand and first 2,000 two thousand 2,000th two thousandth 10,000 ten thousand 10,000th ten thousandth 100,000 a hundred thousand 100,000th hundred thousandth 1,000,000 a million 1,000,000th millionth 1,000,000,000 a billion 1,000,000,000th Billionth *本列表为美国用法。在英国十亿是milliard, 而billion为万亿。美国英语和英国英million, billion, trillion, quadrillion等的位数悬殊很大。.1.2 部分基数词和序数词的读法和写法 a. 0在英国英语中经常读作naught。在美英中读成zero更普遍一些。在读出一连串的数词（如电话和 门牌号码）时，0经常读作oh。例如： -Extension 5076 读作five oh seven six。 b. 基数1-12是独立的单词，13-19在对应的3-9单词后加-teen, 其中thirteen, fifteen, eighteen有变化, 13-19的基数词都有两个重音。20-90之间的十位整数都以-ty结尾。21-99由十位整数加个位数，拼 写时中间用连字符-。例如： -twenty-one。 c. 当文字表达大于100的数字时，在百位（或百位以上）和十位（如无十位则在个位）之间加and。 例如101写成one hundred and one, 150写成one hundred and fifty。 d. 对于百位以上的数字可有不同的读法。例如250可读作two hundred and fifty, two fifty, two five oh；1100可读作one thousand one hundred, eleven hundred。 e. 千位以上的阿拉伯数字从后往前每隔三位用一分节号（或空白字符）隔开。它们所对应的文字表 达中没有万亿这样的单词，而是以thousand, million, billion等为单位。例如： -10，000 （ten thousand）；100，000，000（one hundred million）。 f. 当ten, hundred, thousand, million和billion（以及表示数量的dozen, score）前面有具体数字或 several，a few 和a couple of修饰时，不加-s。例如：fifty thousand, several hundred men。当它 们后面加-s并接of短语时，表示成百上千，成千上万等，这些复数形式前可加 many。例如： -He has read millions of books. -Ive seen it hundreds of times. -There must have been millions of spectators. g. 序数词的构成除了几个不规则