was/were的用法是什么?第一人称是我 我们第二人称是你 你们第三人称就是他、他们等其他的了

was 用于单数情况；were 用于复数情况

was 是am is 过去式 ；were 是are 过去式 .
具体用法如下：
1.was用于 I ,he ,she,it 以及 单个人作主语的句子.
例如：
I was born in 1998.
He was a doctor three years ago.
She was at home yesterday.
It was Monday yesterday.
Mike wasn't at home this morning.
2.were用于you,they,we 以及两个以上的人作主语的句子.
例如：
You were at home yesterday.
They were at the playground an hour ago.
We were singing in the room an hour ago.
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