Question

como posso saber onde colocar was ou were

Answer 1

ambos tem um significado diferente: 

WAS - significa ''era'' ex: She was a good student/ ela era uma boa estudante, e o was vc sempre usa pra he/she ou it 

WERE - tb significa ''era'' porem esse vc nunca usa pra he/she ou it, sempre pra we/you ou they  ex: We were young/ nós eramos jovens