In some states only one person in five lives in a place for more than five years.中"one person in five"是什么词组或者句型阿?

问题描述:

In some states only one person in five lives in a place for more than five years.中"one person in five"是什么词组或者句型阿?

实际上应该是one person in five persons,五个人当中的一个人.英语的一个很大的特点就是避免重复,要避免重复的一个方法就是省略,这里省略了重复部分persons.又如:
Would you like to go to the moives with me to night?
Yes,i'd love to.回答的部分就省略了:to go to the movies with you,省略的原因就是因为避免重复.