while+过去进行时,是不是总是sb.+was+doing sth即使主语是我也是i was,怎么不是were?he was giong shoppinghe was doing his home worki was do the same thing as he did（重点看看这句对不）

while+过去进行时,是不是总是sb.+was+doing sth即使主语是我也是i was,怎么不是were?he was giong shoppinghe was doing his home worki was do the same thing as he did（重点看看这句对不）
while+过去进行时,是不是总是sb.+was+doing sth
即使主语是我也是i was,怎么不是were?
he was giong shopping
he was doing his home work
i was do the same thing as he did（重点看看这句对不）

while+过去进行时,是不是总是sb.+was+doing sth即使主语是我也是i was,怎么不是were?he was giong shoppinghe was doing his home worki was do the same thing as he did（重点看看这句对不）
不一定.
while+过去进行时,sb.+was+doing sth
主语是我是I was,但当主语是我们,他们,你,你们 we,they,you ,you时
be动词用were
I was doing the same thing as he did.
但在虚拟语气中,从句中的be动词都用were
For example:If I were a bird,I will fly to the sky.

不总是 was , 这里的was 是随着人称和单复数变化的，单数就用was,复数就用were。因为“ 我 “ 是单数，所以用was.
we,they ,you 后面都要用 were.

是对的
但在虚拟语气中，从句中的Be动词都用were
e.g. If I were you, I would explain to her.

对啊，am的过去式是was