Breakdown of La instalación del edificio es vieja y habrá fallado un fusible.
ser
to be
y
and
viejo
old
un
a, an, some
del
of the / from the / about the (topic)
el edificio
the building
haber
to have (auxiliary)
fallar
to fail (to malfunction, miss)
la instalación
the installation; the facilities (in the plural)
el fusible
the fuse
Questions & Answers about La instalación del edificio es vieja y habrá fallado un fusible.
Why is the future perfect tense (habrá fallado) used to talk about a fuse that already broke?
This is the main point of your current lesson! In Spanish, the future perfect is often used to make a guess, assumption, or express probability about a completed event in the recent past. While it literally means 'will have failed', in this context it translates perfectly to 'must have failed' or 'probably failed'.
Why is the subject (un fusible) at the very end of the sentence instead of before the verb?
It is extremely common in Spanish to put the subject after the verb when introducing a new entity into the conversation, or with verbs that describe something happening, existing, or failing. Saying un fusible habrá fallado is also correct, but placing un fusible at the end sounds much more natural here.
How does the word instalación fit into this context?
When talking about houses or buildings, una instalación usually refers to a built-in network, like the electrical wiring, plumbing, or heating system. Because the second half of the sentence mentions a fuse (un fusible), we know this specifically means the building's electrical system, not the act of installing something.
Why use es instead of está for vieja, since the building's condition changes as it gets older?
Even though buildings age over time, age is considered an inherent characteristic of the object, not a temporary state or a sudden result of an action. Therefore, we use ser (es) to classify the system as fundamentally old.
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