Conjugación verbo be (ser o estar)
infinitivo: to be presente: am / is / are

pasado: was / were

participio: been Modo indicativo Presente (present): yo soy, tú eres, él es ...

sintaxis: sujeto + presente
I am
It is
You are
We are
He is
You are
She is
They are

Pretérito imperfecto /pasado simple (past simple): yo era, tú eras, él era... sintaxis: sujeto + pasado del verbo
I was
It was
You were
We were
He was
You were
She was
They were