Question

Sobre o uso do was e do were

Answer 1

Was e Were são o verbo to be conjugado no passado, ou seja, ou seja ser e estar no passado.
Was é usada na 1ª e 3ª pessoa, I, he, she, it.
 Já Were é usado na 2ª pessoa, You e They

Aí das pessoas utilizadas alguns exemplos:

I was playing soccer = Eu estava jogando futebol
He was playing soccer = Ele estava jogando futebol
They were playing soccer = Eles estavam jogando futebol
You were playing soccer = Você estava jogando futebol

Espero ter ajudado. o/

Answer 2

was é sempre usado no
I
he
she it
no negativo fica wasn't.
e no interrogativo fica was I/he/she/it ?
e o were é usado no
you
we
they
no negativo fica weren't
e no interrogativo fica were you/we/they?
ambos os dois significam "estava"