"Ele pensou que tinha ganhado."

Translation: He thought he had won.

[darakelly2]

Is it the same sentence if "He thought that i had won"?

[Paulenrique]

When the secong subject is not specified, it means it is the same as the first one, unless you have a specific context.

In this case, it would be "Ele pensou que eu tinha ganhado", but I prefer "Ele pensou que eu tivesse ganhado".

[Heidijan]

Não seria o conjuntivo aqui? "Ele pensou que tivesse ganhado"? Ou não?

[Paulenrique]

It also works.