It's three hours' drive from Beiijing to Shijiazhuang .three hours'drive同意短语

问题描述:

It's three hours' drive from Beiijing to Shijiazhuang .three hours'drive同意短语
A.a three- hour drive B three-hour drive

A
drive作“驾车路程”解是可数名词,它是由抽象名词具体化而形成的可数名词,前面要加a.
three- hour相当于一个形容词,修饰名词drive.
不明白的可以再问哟!