Question

Determine the use of the prepositional phrase in the following sentence.

Answer 1

Yellow is is the prepositional phrase.

Hope this helps.:D

Answer 2

Prepositional phrase follow by a noun.... preposition + noun 

So in the sentence: A prepositional phrase will function as an adjective or adverb. 

As an adjective, the prepositional phrase will answer the question Which one? 

As an adverb, a prepositional phrase will answer questions such as How? When? or Where? 

Boy with the Yellow hair = adjective because it answers WHICH boy? Boy with yellow hair..... 

Ran home == adverb because.... it answers WHERE? We answer it.... he ran home...or ran home.

Hope that helped! :)