saw 跟seen有什么不一样?

问题描述:

saw 跟seen有什么不一样?
saw是SEE的过去式,SEEN也是SEE的过去式,他们两个有什么不一样?还有别的动词也是,像break的过去式broke和broken

saw 是 see 的 过去式
而 seen 是 see 的 过去分词
举个例子:
1.表示过去发生的动作或状态 用过去式
I saw a dog playing with a cat yesterday.
2.完成时 用have\has\had + 过去分词
I have just seen a dog playing with a cat.
3.被动语态 用be动词+过去分词
A dog was seen playing with a cat by me.