第四节 数 词
一、数词的分类: 数词分为序数词(one, two, three, four...)、基数词(first, second, third, fourth...)和分数词(one third, two thirds, four fifths...)。表示单一的数词与单数名词连用,但有些数词和名词连用,表示复数时仍用单数形式
- Both as [A] a hobby and as a profession, photography has fascinated [B] people for more [C] than hundred (X2][D] years.
four dozen eggs(四十八个鸡蛋), two score people (四十个人), three hundred years(三百年), a few thousand horses (好几千匹马), eight million pounds (八百万英磅)。
注意:被这些数词修饰的名词一定是复数,反过来,如果被修饰的名词是复数,那么就用数词的单数形式,如 a(one) thousand years:
二、关于"千""百""百万"的数词: 如果"hundred"、"thousand"和"million"前边没有表示数字和其他限定词修饰时(如"a few"、"one"、" ten"等),则可用复数形式,表示不定数,后面再加"of+名词":hundreds of (数以百计的),thousands and thousands of (成千上万的),millions of (数以百万计的)
三、关于连字符连接的数词: 在连字符连接的"数词+普通名词+形容词"中,"数词"和"普通名词"都要用单数形式
- In the zoo there was _____ .
[A] a hundredyearsold elephant
[B] hundredyearold elephant
[C] a hundredyearsaged elephant
[D] a hundredyearold elephant - In 1931, Duke Ellington broke [A] the traditional threeminutes [B] time limit set for [C] commercial [D] records.
- This estimate [A] of spending will hardly [B] keep pace with even the most optimistic [C] projections of inflation for the fouryears [D] period.
a threeyearold boy, a twomilelong walk
四、基数词中表示"几十"的复数形式可以表达人的岁数或年代
He is in his late twenties. 他快30了。
The old bag lady died in her early fities beside a church in New York. 那要饭的老太太50来岁就死在了纽约的一个教堂附近。
五、分数词:分数词是由基数词和序数词组成的,分子是基数词,分母是序数词。除了表示"1"以外,分母序数词都用复数
- _____of the students have successfully passed the final exam.
[A] Two thirds
[B] Twos third
[C] Two third
[D] Twos thirds
六、百分数: 表示百分比的percent用单数,如ninty percent(90%)
- It has been estimated [A] that almost sixty percents [B] of the land [C] at the Badlands National Monument is devoid of(缺乏,没有) [D] vegetation.
七、例题解析
- D错。 改为than a hundred。
- D为正确答案。数词hundred和名词year都要求用单数形式。
- B错。改为"threeminute"(三分钟的)。
- D错。 改为fouryear。
- A为正确答案。
- B错。 改为percent。
