HOW TO RECOGNIZE A PREPOSITIONAL PHRASE
At the minimum, a prepositional phrase will begin with a preposition and end
with a noun, pronoun, gerund, or clause, the "object" of the preposition.
The object of the preposition will often have one or more modifiers to describe
it.
These are the patterns for a prepositional phrase:
o Preposition + Noun, Pronoun, Gerund, or Clause
o Preposition + Modifier(s) + Noun, Pronoun, Gerund, or Clause
Examples:
At home (At = preposition; home = noun)
From Richie (From = preposition; Richie = noun)
By singing (By = preposition; singing = gerund)
About what we need (About = preposition; what we need = noun clause.)