Her aunt was no very methodical narrator, but with the help of some letters to and from Sir Thomas, and what she already knew herself, and could reasonably combine, she was soon able to understand quite as much as she wished of the circumstances attending the story.
There are no more uses of "narrator" in the book.
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The narrator in the play, Our Town talks to characters in the play as well as to the audience.
One of the more popular narrators in movie history is Morgan Freeman. I especially liked him in The Shawshank Redemption where in addition to playing a major role, he narrated the film.