数词 正误速辨

1　老太太买了两打鸡蛋。

误 　The old lady bought two dozens eggs.

正 　The old lady bought two dozen eggs.

评 　dozen前有具体数词或some, several, many修饰时，要用单数形式。

2　三分之一加三分之二等于一。

误 　One third plus two third equals one.

正 　One third plus two thirds equals one.

评 　英语中用基数词表示分子，用序数词表示分母。当分子为二或二以上的基数词时，分母要用复数形式。

3　我昨天买了一本词典。

误 　I bought one dictionary yesterday.

正 　I bought a dictionary yesterday.

评 　a/an强调类别，而one强调数量。从句意看，并非强调数量，故用冠词a。

4　我们已经学完了前3课。

误 　We have studied the three first lessons.

正 　We have studied the first three lessons.

评 　序数词应放在基数词前。

5　这些孩子是在20世纪末出生的。

误 　These children were born at the end of the twenty century .

误 　These children were born at the end of twentieth century .

正 　These children were born at the end of the twentieth century .

6　我们将在12点10分吃午饭。

误 　We'll have lunch at ten past twelve o'clock .

正 　We'll have lunch at ten past twelve .

评 　o'clock只用于整点，“几点过几分”不可用o'clock。

7　这是一篇2 000字的文章。

误 　It is a 2,000-words article.

正 　It is a 2,000-word article.

评 　在“数词+连字符+名词”构成的复合形容词中，名词要用单数形式。

8　她花了一个半小时写那封信。

误 　She spent one and a half hour writing the letter.

正 　She spent one and a half hours writing the letter.

评 　“一个半小时”要说one and a half hours，要用复数形式。再如：one and a half months （一个半月），one and a half miles （一英里半）。

9　五月是一年中的第五个月。

误 　May is the fiveth month of the year.

正 　May is the fifth month of the year.

10　这所学校大约有800名学生。

误 　There are about eight hundreds students in the school.

正 　There are about eight hundred students in the school.

11　我7点55分离开家的。

误 　I left home at fifty five past seven .

正 　I left home at five to eight .

评 　分钟数（在半小时以内含半小时）+past+小时，表示几点过几分；半小时以上则用to，结构为：到下一个小时所差分钟数+to+下一个小时。

12　你有几支钢笔？—我有3支钢笔。

误 　How many pens do you have?—I have three pens .

正 　How many pens do you have?—I have three .

评 　回答how many提问的句子时，通常要省略数词后重复的词。

13　他父亲38岁。

误 　His father is thirty eight .

正 　His father is thirty-eight .

评 　表示“几十几”时，十位数和个位数中间要加连字符。但表示时间的“几点几分”，中间不用连字符。

14　我曾经去过那儿一两次。

正 　I've been there one time or two times .（美式英语 ）

正 　I've been there once or twice .

评 　在美式英语中，one time和two times可表示“一次”和“两次”，等于once和twice。

15　我们的工作已完成一半。

误 　Our half work is done.

正 　Half our work is done.

评 　half our work是half of our work的省略式。

16　“hut”一词中有一个“h”，一个“u”和一个“t”。

误 　There is a “h”, an “u” and a “t” in the word “hut”.

正 　There is an “h”, a “u” and a “t” in the word “hut”.

评 　h发音为［′eɪtʃ］，为元音音素开头，故用an。u发音为［juː］，为辅音音素开头，故用a。