must have seen
Piotre nunca deve ter visto a catedral de Assunção, nem a de São Dmitri.
Piotre must never have seen the Cathedral of the Assumption, nor that of Saint Dmitri.
— Andrei Rublev (1966)
You must have seen something.
Someone must have seen something.
Então, deve ter visto em algum lugar!
Then you must have seen it somewhere!
— O que o Coração Deseja (2001)
Se você já visitou Roma, deve ter visto o Coliseu.
If you've ever visited Rome, you must have seen the Colosseum.
You must have seen the whole thing.
— Rebecca, A Mulher Inesquecível (1940)