英语 wasn't.weren't.didn't区别

问题描述:

英语 wasn't.weren't.didn't区别
例子 新手水平

I wasn't a boy.我不是男孩 WAS 用在 I HE SHE
We weren't boys.我们不是男孩 WERE 用在 YOU WE THEY
didn't 是DO的过去式 用在 I HE SHE