Prepositional Phrase

A Prepositional Phrase is made up of a Preposition and a Noun Phrase.

e.g. I see him [in [my classroom]].

                         Pre + NP= PP

There is no head in a PP because the two components are important.

vFunction

The only function of PP is an Adverbial in the sentence.

e.g. She lost the bag [at two o’clock].

                                      PP: Adverbial