"with" is a preposition, so "with razor-sharp teeth" is a prepositional phrase.
But what is "Eating" in this sentence?
"Eating flesh with razor-sharp teeth" is how piranhas survive.
prepositional phrase
gerund phrase
participial phrase
appositive phrase
A?
3 answers
I originally thought that was a gerund but isn’t “eating” a verb?
Gerunds are verb forms, yes, and they act like nouns.
Yes, it's a gerund phrase -- the whole phrase is the subject of the sentence.
Yes, it's a gerund phrase -- the whole phrase is the subject of the sentence.