【问】 two-thirds和two thirds哪种拼写法正确?

【答】 当分数用作修饰语时，总要用连字符：

We were short of a two-thirds majority. (Perrin)

我们不够三分之二的多数。

但是，当分数用作名词时，则有两种拼写法并存：

1. Two thirds of the land was uncultivated. (CGEL)

三分之二的土地未耕种。

2. Two thirds of apples were bad. (Wood)

三分之二的苹果都坏了。

3. Two-thirds of the work is finished. (TOEFL)

工作完成了三分之二。

4. Approximately three-fourths of the earth's surface is covered with water. (TOEFL)

地球表面大约四分之三被水复盖着。