was是be的单数形式，用于第一、第三人称的单数形式。were是be的复数形式，用于第二人称和第一第三人称的复数形式。它们两个都是be动词的过去式形式，其中was是is的过去式，were是are的过去式。
was和were的区别及用法
1、was和were都是过去时。was是is和am的一般过去式，were是are的一般过去式。
2、was与I/He/She/It连用，were与We/They/You连用。
was
1、Right off I want to confess that I was wrong.我立刻就想承认我错了。
2、He was already rich.他已经很富有了。
3、I was astounded by its beauty.它的美丽震撼了我。
were
1、They were photographed and had their fingerprints taken.他们被拍了照，还被提取了指纹。
2、We were all badly bitten by mosquitoes.我们都被蚊子咬惨了。
3、They were good friends during the university.他们大学时是好朋友。