She didn't finished her homework until I returned.(didn't后为何不用原型,跟not until有关吗?）

分类: 作业答案 • 2021-12-19 23:11:36

问题描述：

She didn't finished her homework until I returned.(didn't后为何不用原型,跟not until有关吗?）
就是此处finished为何不是原型

答

题目出错了,应该是原型