直到看见妈妈,这个小孩才停止了哭泣.The little child din't stop crying until he had seen his mother.为什么用had seen,不用saw?

分类: 作业答案 • 2021-12-19 16:26:27

问题描述：

直到看见妈妈,这个小孩才停止了哭泣.
The little child din't stop crying until he had seen his mother.
为什么用had seen,不用saw?

答

自己慢慢悟,英语狠奇妙!