HOW late were you were为什么用过去式?

HOW late were you were为什么用过去式? If you were killed为什么要用过去式? I wish you were there 为什么用ARE的过去式 you were my everything为什么用were Where were you yesterday?为什么用were 为什么是What were you doing,是过去式为什么要用doing,不是what were you do Why were you late today? when were you born?为什么用born（过去分词）而不用bore（过去式） 为什么用were提问 Why were you late for work yesterday?为什么要用 for 改成 to How long were you there.为什么用were 从意思上我看不出来是过去时啊` Can you explain how it came about that you were an hour late were you at the butcher's,为什么用were