有時population可用作可數(shù)名詞,其前可用不定冠詞.例如:
China has a population of about 1.3 billion.(=There is a population of about 1.3 billion in China.) 中國大約有十三億人口.
New York is a big city with a population of over 10 million.紐約是一個有一千多萬人口的大城市.
在表示多個地區(qū)的人口時,population要用復(fù)數(shù)形式populations.例如:
Many parts of the world,which once had large populations and produced plenty of crops,have become deserts.世界上很多地區(qū)一度人口眾多,種植大量的農(nóng)作物;現(xiàn)在,這些地區(qū)已經(jīng)變成了沙漠.