What is the participle and what word does it modify in Riding on bus you watched landscape float

* "Riding on the bus" is a present participle phrase acting as an adjective modifying the implied subject "you."

* "Watched" is the past participle of the verb "to watch." It acts as the main verb of the sentence.

Here's a breakdown:

* Riding on the bus (present participle phrase, modifying "you")

* You (implied subject)

* watched (past participle, main verb)

* landscape (object of the verb)

* float (infinitive, describing the landscape)

So, the participle in the sentence is "watched," and it modifies the implied subject "you."