Tere is a big tree in the front of the classroom.改错

题目

Tere is a big tree in the front of the classroom.改错
改错!哪裏错了?

答案

应该用in front of the classroom
因为in the front of 是表示在某物体内部的前方
而 in front of 表示在物体外部的前方
而此题中tree不可能被种在教室内