Breakdown of El eco fue escuchado a lo largo del pasadizo.
ser
to be
escuchar
to listen
el pasadizo
the passage / the passageway
a lo largo de
along
Questions & Answers about El eco fue escuchado a lo largo del pasadizo.
Why does the phrase "a lo largo de" become "a lo largo del" in this sentence?
The phrase a lo largo de means "along" or "the length of" a physical space. Here, the echo travels along the passage. Because pasadizo is a masculine noun, the preposition de combined with the article el to form the mandatory contraction del (a lo largo del pasadizo).
"Fue escuchado" translates to "was heard." Is this passive voice common in Spanish?
Yes, this is the true passive voice, formed with the verb ser (here in the past tense as fue) plus the past participle (escuchado). Notice how escuchado acts like an adjective and matches the masculine, singular subject el eco. While this is perfectly correct, in everyday conversation Latin American speakers often prefer the passive "se", so you might also hear Se escuchó el eco instead.
I thought "escuchar" meant "to listen" and "oír" meant "to hear." Why use "escuchar" for an echo?
That is the textbook rule! Generally, oír is passive (just perceiving sound) and escuchar is active (paying attention). However, in many parts of Latin America, people use escuchar for both hearing and listening in everyday speech. So, using fue escuchado to mean "was heard" is very common and natural here.
What exactly is a "pasadizo"? Is it related to the verb "pasar"?