Question 1

Why do we use por here to mean "because of"? Could I use porque?

Accepted Answer

In Spanish, por is used to show the cause or reason for something. Here, the storm is the direct cause of the slow traffic. You cannot use porque (because) here, as porque needs to be followed by a full phrase with a verb, like porque hay una tormenta (because there is a storm). When placing the equivalent of "because of" before just a noun like la tormenta, always use por.

Question 2

The traffic is only slow temporarily because of the storm. Why use es instead of está?

Accepted Answer

This is a great question that often trips up learners! While estar is often used for temporary states, Spanish speakers frequently use ser to describe the overall nature of an event or a situation happening around them. That said, using está (El tráfico está lentísimo) is also perfectly natural here and emphasizes that it is a temporary condition. Both are common and correct!

Question 3

What does the -ísimo ending on lentísimo do?

Accepted Answer

It is a common suffix (word ending) used to mean "extremely" or "very". You take the base adjective lento (slow), drop the final -o, and add -ísimo. So, lento becomes lentísimo (extremely slow). It is a faster, more dramatic way to say muy lento.

Question 4

Does lentísimo have to change its ending to match the noun it describes?

Accepted Answer

Yes, it acts exactly like a regular adjective! Because el tráfico is masculine and singular, it takes the masculine singular ending -ísimo. If you were describing slow streets (las calles, which is feminine and plural), you would change the ending to match: Las calles son lentísimas.

El tráfico es lentísimo por la tormenta.

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