was sure that
I was sure you would come.
Ela tinha certeza de que o Flynn tinha nos deixado a solução.
She was certain that Flynn had left us the solution.
— Tron: Ares (2025)
Ele tinha certeza de que algo ia dar errado.
He was certain that something was going to go wrong.
Tom tinha certeza de que você gostaria disso.
Tom was sure you would like it.
Eu tinha certeza de que ganharia.
I was sure I would win.
Sameer tinha certeza de que você viria!
Sameer was sure you would come!
— Hum Dil De Chuke Sanam (1999)
Tom tinha certeza de que Mary não sabia dirigir.
Tom was certain that Mary didn't know how to drive.
Não foi há tanto tempo que você tinha certeza de que voltaria para a casa.
It wasn't that long ago that you were sure you'd be coming home.
— Podres de Ricos (2018)
A partir daquele momento, tinha certeza de que havia cometido um erro grave.
From that moment on, I was certain that I had made a serious mistake.
Tom tinha certeza de que encontraria outro emprego.
Tom was sure he would find another job.