0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 30 40 50 60 70 80 90 100 基数词 序数词 first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfth thirteenth fourteenth fifteenth sixteenth seventeenth eighteenth nineteenth twentieth twenty-first thirtieth fortieth fiftieth sixtieth seventieth eightieth ninetieth hundredth zero/nought/nothin g one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty twenty-one thirty forty fifty sixty seventy eighty ninety a hundred 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th 15th 16th 17th 18th 19th 20th 21st 30th 40th 50th 60th 70th 80th 90th 100th 101 1,000 1,001 2,000 10,000 100,000 1,000,000 a hundred and one 101st a thousand 1,000th hundred and first thousandth thousand and first two thousandth ten thousandth hundred thousandth a thousand and one 1,001st two thousand ten thousand 2,000th 10,000th a hundred thousand 100,000th a million 1,000,000th millionth 1,000,000,000t Billionth h 1,000,000,00 a billion 0 *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. --I've 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的外(表中黑体的单词),基本上都是在相应的基数词后加-th(遇
到-ty结尾时,要先把\"y\"变成\"i\",再加\"eth\")。多位数的序数词变化是把基数词的末位数变成相应
的序数词。例如 1001st为thousand and first。
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