1704949281
645 Number
1704949282
1704949283
基数词（cardinal numbers）：
1704949284
1704949285
英语的主要基数词如下：
1704949286
1704949287
1 one 11 eleven 2 two 12 twelve 1,000 a thousand 3 three 13 thirteen 30 thirty 10,000 ten thousand 4 four 14 fourteen 40 forty 100,000 a hundred thousand 5 five 15 fifteen 50 fifty 1,000,000 a million 6 six 16 sixteen 60 sixty 10,000,000 10 million 7 seven 17 seventeen 70 seventy 100,000,000 a hundred million 8 eight 18 eighteen 80 eighty 1,000,000,000 a billion 9 nine 19 nineteen 90 ninety 10 ten 20 twenty 100 a hundred 所有其他数字都可由它们构成：
1704949288
1704949289
两位数：17 seventeen
1704949290
1704949291
29 twenty-nine
1704949292
1704949293
84 eighty-four
1704949294
1704949295
三位数：150 a hundred and fifty
1704949296
1704949297
365 three hundred and sixty-five
1704949298
1704949299
500 five hundred
1704949300
1704949301
703 seven hundred and three
1704949302
1704949303
852 eight hundred and fifty-two
1704949304
1704949305
999 nine hundred and ninety-nine
1704949306
1704949307
（在美式英语中and通常省掉：one hundred fifty dollars）
1704949308
1704949309
四位数以上：最好自后向前，每三位数加一逗号，第一逗号前为thousand，第二逗号前为million，第三逗号前为billion：
1704949310
1704949311
5,670 five thousand six hundred and seventy 46,000 forty-six thousand 920,000 nine hundred and twenty thousand 8,005,450 eight million, five thousand, four hundred and fifty 38,000,000 thirty-eight million 300,000,000 three hundred million 12,000,000,000 twelve billion 当基数词和复数名词连用时，后面动词一般也用复数形式：
1704949312
1704949313
Twenty people were injured in the accident．在事故中有20个人受了伤。
1704949314
1704949315
Over a hundred people were invited to the party．有一百多人被邀参加晚会。
1704949316
1704949317
但在谈钱、时间、距离、重量等时，作为整体看待，后面的动词也可用单数形式：
1704949318
1704949319
A thousand pounds is a lot of money．1000英镑是很多钱。
1704949320
1704949321
Twenty years is a long time．20年是很长时间。
1704949322
1704949323
90 miles an hour is much too fast．一个钟头开90英里太快了。
1704949324
1704949325
The 2,000 miles has to be covered in three days．2000英里得在3天内走完。
1704949326
1704949327
序数词（ordinal numbers）：
1704949328
1704949329
序数词绝大多数都由相应的基数词加-th构成，如：
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