take 和drive为什么加ing,turn 为什么加s

题目

take 和drive为什么加ing,turn 为什么加s
Men also form car pools,with three or four men taking turns driving to the place where they all work.

答案

take turns to do sth 和take turns doing sth都可以 表示“轮流做某事”
take turns to drive to.也可以的.
taking turns driving to the place where they all work 整个句子修饰“men”