Breakdown of Vi a un hombre vomitar después de bajar de la montaña rusa.
de
from / of
un
a, an (masculine)
ver
to see / to look / appear
el hombre
the man
bajar
to go down / to lower
después
after / afterwards
la montaña rusa
the rollercoaster
vomitar
to vomit
a
personal 'a' (marks a human direct object)
Questions & Answers about Vi a un hombre vomitar después de bajar de la montaña rusa.
Why does the sentence use the infinitive vomitar instead of the gerund vomitando?
With perception verbs like ver, using the infinitive (vomitar) implies you witnessed the entire action from start to finish. If you used the gerund (vomitando), it would mean you caught the action in progress ("I saw him vomiting"). Both are grammatically correct, but they paint a slightly different picture!
Why is there an a before un hombre? He isn't a specific, named person.
Even though he isn't named, the personal a is still required because the direct object is a specific human being in this context (a real guy the speaker actually saw). The personal a is only dropped for people if you are talking about them hypothetically or as a general category, like "I'm looking for a man who..."
Why is it después de bajar instead of después de bajando to mean "after getting off"?
In Spanish, whenever a verb directly follows a preposition (like de, en, para, or por), it must be in the infinitive form. English uses the "-ing" form in these cases, which is why it is so tempting to use the Spanish gerund, but después de bajando is grammatically incorrect.
Could I just say bajar la montaña rusa without de?
No, you need the preposition de here. Bajar de specifically means "to get off" or "to get out of" a vehicle, ride, or elevated place. Without de, bajar generally means "to lower" something, "to download," or "to go down" (like stairs).
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