If you're referring to the book by Charles Dickens, then the ghost of Christmas past visits scrooge in Stave Two: The First of The Three Spirits.
A phrase is a group of words, without a subject or a verb, that functions in a sentence as a single part of speech. ... A prepositional phrase is a group of words that begins with a preposition and ends with a noun or a pronoun. This noun or pronoun is called the “object of the preposition
The purpose of the letter is to send and idea, thought, or share story with another individual