Breakdown of La torre del castillo fue inaugurada anoche.
ser
to be
del
from the / of the
la
the (feminine)
anoche
last night
el castillo
the castle
la torre
the tower
inaugurar
to inaugurate
Questions & Answers about La torre del castillo fue inaugurada anoche.
Why is it fue and not estuvo here?
Why does the verb end in "-a" (inaugurada)?
When forming the passive voice with ser, the past participle (inaugurada) acts like an adjective. This means it must match the gender and number of the subject receiving the action. Because the subject is la torre (feminine, singular), the participle becomes inaugurada. If the subject were masculine, like el castillo (the castle), it would be fue inaugurado.
Why use the preterite fue instead of the imperfect era?
We use the preterite tense fue because the inauguration was a single, completed event that happened at a specific time in the past (anoche, meaning last night). If we were setting a background scene or describing an ongoing, repeated action in the past without a clear end, we would use the imperfect tense era.
The lesson mentions using por for the passive voice. Why isn't it in this sentence?
In the passive voice, por is used to say who performed the action (for example, fue inaugurada por la reina - was inaugurated by the queen). Because this sentence focuses only on what happened to the tower and doesn't mention who actually inaugurated it, we simply leave the por phrase out.
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