What is the participial phrase in this sentence "The boy sleeping in the corner is snoring loudly"?
"sleeping in the corner"
A participle phrase is a phrase that starts with a participle (if we're dealing with the present, then it'll be a word normally thought of as a verb and ends with -ing and if we're dealing with the past, then that verb-looking word will generally end
In our question, we can rewrite it and eliminate the participle phrase:
The boy is snoring loudly.
Which is fine. But we want to say a little bit more about the boy. Where is he? And what else is he doing, aside from snoring loudly?
The boy sleeping in the corner is snoring loudly.