打字猴:1.705069407e+09
1705069407 英语语法红宝书 [:1705062822]
1705069408 6.3 分数
1705069409
1705069410 6.3.1 分数的构成
1705069411
1705069412 a 不带整数的分数
1705069413
1705069414 分子用基数词,分母用序数词;分子与分母之间可用连字符连接,也可不用;当分子大于1时,分母用复数形式。
1705069415
1705069416 1/3 : a third 或one third (one-third)
1705069417
1705069418 2/3 : two thirds (two-thirds)
1705069419
1705069420 1/4 : a fourth或one fourth(one-fourth),但更常见的表示方式为a quarter或one quarter
1705069421
1705069422 3/4 : three fourths 或 three quarters
1705069423
1705069424 1/5 : a fifth 或one fifth (one-fifth)
1705069425
1705069426 2/5 : two fifths (two-fifths)
1705069427
1705069428 3/5 : three fifths (three-fifths)
1705069429
1705069430 4/5 : four fifths (four-fifths)
1705069431
1705069432 注意:1/2的表示方法只能是a half 或one half。
1705069433
1705069434 当分数较为复杂时,都用基数词,中间加over。
1705069435
1705069436 39/7 : thirty-nine over seven   18/19 : eighteen over nineteen
1705069437
1705069438 137/465 : one hundred and thirty-seven over four hundred and sixty-five
1705069439
1705069440 简单的分数也可采取这种表示方法:
1705069441
1705069442 1/3 : one over three      2/3 : two over three
1705069443
1705069444 b 带分数(带整数的分数)
1705069445
1705069446 整数与分数之间用and连接。
1705069447
1705069448 2 1/2 : two and a half
1705069449
1705069450 3 1/4 : three and a quarter
1705069451
1705069452 5 2/3 : five and two thirds
1705069453
1705069454 6.3.2 分数的语法功能
1705069455
1705069456 分数在句子最常用作主语、宾语、定语等。
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