新概念2...81课中的语法问题.stopped at the camp gates.

题目

新概念2...81课中的语法问题.stopped at the camp gates.
如题...
At that moment,a large black car with four officers inside it ,stopped at the camp gates.
请问这里的 stopped 是 (being) stopped ...为什么用被动呢...不能用stopping

答案

此句话中stopped是真正的谓语,是过去式.而stopping是不能做谓语的,所以不能互换.