Expressing cause (por)

Expressing cause with por

Use the preposition por to express the cause or reason for an event. In this context, it translates to "because of" or "due to".

The doctor has arrived late today because of the traffic jam.
La médica ha llegado tarde hoy por el atasco.
The flight is canceled because of a breakdown.
El vuelo está cancelado por una avería.

Explaining everyday disruptions

You will often hear por used to explain delays or changes of plan caused by bad weather, traffic, or a demonstration. Just place por directly before the noun causing the problem.

The delay is because of the rain.
El retraso es por la lluvia.
The main street is closed today because of the demonstration.
La calle principal está cerrada hoy por la manifestación.
There are many accidents on the road because of the fog.
Hay muchos accidentes en la carretera por la niebla.

Dealing with major obstacles

When explaining more serious disruptions like a flood, a storm, or ice, use por alongside verbs like cancelar (to cancel), bloquear (to block), or chocar (to crash).

The bridge is destroyed because of the flood.
El puente está destruido por la inundación.
The director has just canceled the concert because of the storm.
La directora acaba de cancelar el concierto por la tormenta.
The truck has blocked the road because of the ice.
El camión ha bloqueado la carretera por el hielo.
The bus has crashed against the tree because of the ice.
El autobús ha chocado contra el árbol por el hielo.

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