文档介绍：Numbers cardinal numbers ( 基数词) ordinal numbers (序数词) 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 —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 。 4. 十位数与个位数之间要加连字符号“-”,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 。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) 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) 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 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 million(=a thousand thousand 一百万 1,000,000 ) ten million 一千万( 10,000,000 ) a hundred million 一亿( 100,000,000 ) a billion (= a thousand million) 十亿( 1,000,000,000 ) 7. hundred, thousand, million,billion 前有确切数词时, 遵循“两个无”原则,即无“s”,无“ of”。 three hundred people nine million books 8