was和were都表示“是”，過去式，和be動詞用法一致。
區別在於：
1、was 表單數-是 （is的過去式）
例如：I was beautiful five years ago.
2、were 表複數-是 （are的過去式）
例如：They were workers.
was和were的區別，各自怎麼用
區別是用法不同，舉例如下：
I/he/she was a student five years ago.
they/you were students five years ago.
there was a book on the table.
there were ten books on the table.
was和were的區別，各自怎麼用
was是is和am的過去式，用於接，除了第二人稱以外的單數主語，were是are的過去式，用於接所有複數和第二人稱you.如:I was at home yesterday. You were busy last Sunday.
