Question 1

Why do we use "por" in this sentence instead of "para"?

Accepted Answer

In Spanish, por is used to talk about movement through, along, or around a place. Since the train is moving through the tunnel, we use por. If we used para, it would mean the tunnel is the final destination the train is heading toward, rather than the path it takes.

Question 2

Does "pasar" always mean "to pass"?

Accepted Answer

Here it means to pass or to go through, but pasar is a very common verb with a few other meanings you should know at this level. It can also mean to spend time (like pasar tiempo) or to happen (like the common phrase ¿Qué pasa?).

Question 3

Why does "túnel" have an accent mark on the "u"?

Accepted Answer

The accent mark tells us to put the spoken stress on that first syllable. Without the written accent, the standard rules of Spanish pronunciation would make us stress the last syllable because the word ends in the consonant "l".

Question 4

Why is the adjective "oscuro" placed after "túnel"?

Accepted Answer

In English we put the description first and say dark tunnel, but in Spanish, descriptive adjectives like oscuro almost always come after the noun they describe. Notice that it also ends in -o to match the masculine singular noun el túnel.

El tren pasa por el túnel oscuro.

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