像watch,wash,clean等单词后都可以加ed.改变形式后用法有什么不同吗?请举例并说明

分类: 作业答案 • 2021-12-31 11:01:10

问题描述：

答

改变形式后变为一般过去式,描述过去的事物.
例句：I often watch television at night.
I watched television last night.