Breakdown of Hubo un accidente por no usar protección.
no
no, not
un
a, an (masculine)
haber
to be (there is / there are)
usar
to use / to wear
Questions & Answers about Hubo un accidente por no usar protección.
Why use hubo instead of había?
Hubo is the preterite (completed past) form of haber, meaning "there was". We use it here because an accident is a single, completed event with a clear beginning and end. If you were setting the scene or describing an ongoing state in the background (like "there was heavy traffic"), you would use the imperfect form, había.
Why do we use the infinitive usar instead of the gerund usando for "using"?
In Spanish, whenever a verb is the object of a preposition (like por, de, en, or para), it must be in the infinitive. While English naturally says "for not using", Spanish strictly requires the infinitive usar.
How does the negation work with the infinitive here?
To negate an infinitive, you simply place no directly in front of it. So "not using" becomes no usar. This matches the pattern you see in the current lesson for impersonal signs and instructions, such as No fumar (No smoking).