at the sound of the gun ,the birds flew in all directions.里的in可以改成to吗?为什么?

题目

at the sound of the gun ,the birds flew in all directions.里的in可以改成to吗?为什么?

答案

不可以.
directions 是方向,任何方向.例如,in that direction,一定配 in.
用 to 就写成,to the South (朝南部）.要很肯定地举一个方向.