一个单词population

思路分析]
如下
[解题过程]
population是一个集合名词,它的用法有时较为特殊,所以很容易用错。下面谈一下它的用法。

一、population常与定冠词the连用,作主语用时,谓语动词常用第三人称单数形式。例如:

The world\'s population is increasing faster and faster. 全世界的人口增长得越来越快。

At the beginning of the twentieth century, the world\'s population was about 1,700 million. 在二十世纪初,全世界的人口大约是十七亿。

二、当主语是表示\"人口的百分之几、几分之几\"时,谓语动词用复数形式。例如:

About seventy percent of the population in China are farmers. 中国大约有百分之七十的人口是农民。

三、有时population可用作可数名词,其前可用不定冠词。例如:

China has a population of about 1.3 billion. (=There is a population of about 1.3 billion in China.) 中国大约有十三亿人口。

New York is a big city with a population of over 10 million. 纽约是一个有一千多万人口的大城市。

在表示多个地区的人口时,population要用复数形式populations。例如:

Many parts of the world, which once had large populations and produced plenty of crops, have become deserts. 世界上很多地区一度人口众多,种植大量的农作物;现在,这些