There is no vague pronoun reference in that sentence.
The pronouns in the sentence are:
Aristotle enjoyed studying motion because he really enjoyed learning about why different things worked.
He was interested in computers, so he enjoyed studying the networking module. Computer networking is very important in modern technology.
I enjoyed our conversation last night.
I enjoyed renouncing the book for the elementary kids today
Enjoyed and lasted are the verbs. 😊
The verbs in the sentence "they enjoyed the concert but it lasted too long" are "enjoyed" and "lasted." "Enjoyed" is the main verb, indicating the action of experiencing pleasure from the concert. "Lasted" is also a verb, functioning as the action of the concert continuing for a longer duration than desired.
Example sentence - We enjoyed the summer in New England.
He enjoyed his soccer game.
Example sentence - We enjoyed the parody about fairy tales.
The one noun in the sentence is bus.
In the sentence "Royce enjoyed building his sailboat," the gerund phrase "building his sailboat" functions as the direct object of the verb "enjoyed." It specifies what Royce enjoyed doing, thereby providing clarity and detail to the action he takes pleasure in.
His Porpoise enjoyed fish.