acreditar que seja mesmo o

believe it's really the

→ acreditar
phrase Rare #42,050
believe it's really the Used to express disbelief that someone or something is really the person or thing being identified. The subjunctive seja follows acreditar que in this context, and mesmo adds emphasis meaning “really.”
PO: Não consigo acreditar que seja mesmo o seu irmão.
EN: I can't believe it's really your brother.

Não consigo acreditar que seja mesmo o Tom.

I can't believe it's really Tom.

Eu não consigo acreditar que seja mesmo o Tom.

I can't believe it really is Tom.

Eu não posso acreditar que seja mesmo o Tom.

I can't believe it's really Tom.

Não posso acreditar que seja mesmo o Tom.

I can't believe it’s really Tom.