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debe haber sido

must have been

→ deber
phrase Common #8,049
must have been Used to express a strong guess or conclusion about something in the past.
SP: Debe haber sido difícil para ti.
EN: It must have been difficult for you.

Debe haber sido difícil para ella dejar su país y empezar de cero en un lugar desconocido.

It must have been difficult for her to leave her country and start from scratch in an unfamiliar place.

Debe haber sido muy divertido romperme el corazón.

It must have been a lot of fun to break my heart.

— Kal Ho Naa Ho (2003)

Ella debe haber sido rica.

She must have been rich.

Debe haber sido una broma.

It must have been a joke.

— Mike y Nick y Nick y Alice (2026)

Debe haber sido con algún equipo.

It must have been with some team.

Debe haber sido horrible, imagino.

It must have been horrible, I imagine.

— La cinta blanca (2009)

Debe haber sido terrible.

It must have been terrible.

— Die My Love (2025)

Debe haber sido él quien ha grabado las cintas.

It must have been him who recorded the tapes.

— Caché (Escondido) (2005)

Anoche debe haber sido muy emocionante.

Last night must have been very exciting.

Mi padre dice que debe haber sido una persona enferma.

My father says he must have been a sick person.

— La cinta blanca (2009)

Eso debe haber sido antes de su 'accidente '.

That must have been before his 'accident'.

Debe haber sido difícil para ella coser esta chomba.

It must have been difficult for her to sew this sweater.

Debe haber sido la humedad de la barca.

It must have been the dampness of the boat.

— El cartero (y Pablo Neruda) (1994)

Ella debe haber sido rica en aquellos días.

She must have been rich in those days.

Debe haber sido un sueño.

It must have been a dream.

— Porco Rosso (1992)

Además, lo que vi debe haber sido el infierno.

Besides, what I saw must have been hell.

— Porco Rosso (1992)

Esa barrera debe haber sido por algo.

That barrier must have been there for a reason.

— Taxi Express (1998)

Debe haber sido divertido, ¿verdad?

It must have been fun, right?

— Kal Ho Naa Ho (2003)

Debe haber sido muy tenso.

It must have been very tense.

— Anatomía de una caída (2023)

Debe haber sido una caída bastante dura.

It must have been quite a hard fall.

— La asistenta (2025)

Él debe haber sido rico.

He must have been rich.

Debe haber sido cosa de su hermana.

It must have been his sister’s doing.

Debe haber sido inteligente.

He must have been clever.

Ella debe haber sido muy joven cuando escribió ese poema.

She must have been very young when she wrote that poem.

Debe haber sido terriblemente difícil.

It must have been terribly difficult.

— Die My Love (2025)

A esto debe haber sido a lo que se refería.

This must be what he was referring to.

— Despedidas (2008)

Tu madre debe haber sido hermosa cuando joven.

Your mother must have been beautiful when she was young.

La noticia debe haber sido una sorpresa.

The news must have come as a surprise.

— El tiempo contigo (2019)