It's necessary for players to move quickly towards one end of the court while throwing the ball to each other.句子中为什么thro
问题描述：
It's necessary for players to move quickly towards one end of the court while throwing the ball to each other.句子中为什么throw要加ing ,throw不是瞬间动词吗?是否表示主动?
答
while 后面接动词的时候一般用的都是v-ing的形式 ,不是表主动!