A prepositional phrase acts as either an adjective or an adverb.
Examples:
I made him a taco with lots of cheese. (adjective, describes the taco)
He ate the taco with gusto. (adverb, ate it how)
That book on the desk is due back at the library. (adjective, describes which book)
That book on the desk is due at the library. (adverb, due where)
Yes, a prepositional phrase can act as the subject of a sentence. For example, in the sentence "In the park is where we had a picnic," the prepositional phrase "In the park" serves as the subject.
I'm not sure if your question is whether a prepositional phrase is the same thing as a word group, or if "group" is a prepositional phrase. The answer is no in either case. A word group must express a complete thought. A prepositional phrase is part of a sentence and it has to start with a preposition. "In the group" is a prepositional phrase beginning with the preposition "in."
A prepositional phrase acts like an adjective or adverb in a sentence by providing additional information about the subject or verb.
The prepositional phrase is in the park. Camping is not part of the prepositional phrase.
In the wind is the prepositional phrase.
A prepositional phrase that modifies a noun or pronoun is an adjective prepositional phrase. An adjective prepositional phrase almost always follows the noun/pronoun it modifies.
To is a preposition, but it's not a prepositional phrase unless there is an object of the preposition.
Yes, the phrase from the refrigerator is a prepositional phrase. from is a preposition
with such force is a prepositional phrase.
A second prepositional phrase in a sentence that modifies part of the first prepositional phrase. There can also be a third nested prepositional phrase that modifies part of the second prepositional phrase, and so on. For example: Mary ran (to the end (of the street.)) The first prepositional phrase is "to the end" and the second prepositional phrase is "of the street" where "of the street" modifies "end" so "of the street" is a nested prepositional phrase. I am excited (for the birthday party (for Ashley.)) The first prepositional phrase is "for the birthday party" and the second prepositional phrase is "for Ashley" where "for Ashley" modifies "birthday party" so "for Ashley is a nested prepositional phrase. A non-nested prepositional phrase would be a second prepositional phrase that does not modify part of the first prepositional phrase. For example: Mary ran (to the street) (in the morning.) The first prepositional phrase is "to the street" which modifies "ran." Mary ran to the street. The second prepositional phrase is "in the morning" which also modifies "ran." Mary ran in the morning.
Phrase
Yes, in the classroom is a prepositional phrase.