文档介绍：Numbers
cardinal numbers
(基数词)
ordinal numbers
(序数词)
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基数词(cardinal numbers)的构成及用法:
1. 1~12的基数词是独立单词,无规律可循。
eleven twelve
2. 13~19的基数词一般在3~9对应的基数词后加-teen构成,注意:
thirteen fifteen eighteen
3. 20~90八个整十位数以后缀-ty结尾。注意:
twenty (20) thirty (30) forty (40) eighty (80)
4. “几十几“的基数词由十位数和个位数中间加
连字符“-”构成:
twenty-nine y-seven
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—12的基数词是独立的单词,即: one,two,three,four,five,six,seven,eight, nine,ten,eleven,twelve。 —19的基数词以-teen结尾。如: fourteen,seventeen等,但13,15,18较特殊, 13—thirteen 15—fifteen,18—eighteen。 —90的整十位均以-ty结尾。如: sixty,y,但20,30,40,50,80较特殊, 20—twenty 30—thirty 40—forty,50—fifty,80—eighty。 “-”,如:28—twenty-eight,96—y-six   (若无十位则和个位)之间加and,如:148—one hundred and forty-eight 406—four hundred and six。
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基数词
基数词+10
基数词×10
复合词
one (1)
eleven (11)
ten (10)
two (2)
twelve (12)
twenty (20)
twenty-two (22)
three (3)
thirteen (13)
thirty (30)
thirty-three (33)
four (4)
fourteen (14)
forty (40)
forty-four (44)
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five (5)
fifteen (15)
fifty (50)
fifty-five (55)
six (6)
sixteen (16)
sixty (60)
sixty-six (66)
seven (7)
seventeen (17)
seventy (70)
seventy-seven (77)
eight (8)
eighteen (18)
eighty (80)
eighty-eight (88)
nine (9)
een (19)
y (90)
y-nine (99)
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5. 百位数和十位数之间,在英国英语要用“and”连接,在美国一般不用。
three hundred and five four hundred and forty-five
6. 英语中“万”及以上的表示法:
53,461
fifty-three thousand, six hundred and forty-one
30,045,310
thirty million and forty-five thousand, three hundred and ten
3,333,333,333
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⑵ 100以上的大数词有:
a hundred                                          一百(100)
a thousand                                      一千(1,000)
ten thousand                                 一万(10,000)
a hundred thousand                     十万(100,000)a mill