Answer:Keats uses here two elaborated metaphors: one of the imagination as a charioteer who can fly into the heavens and "do strange deeds / Upon the clouds" (evidently a reference to the imagination's creative func tion), and one of poetry itself as being a planet of sound, rolling through the heavens.
Isolation: Whatever else the Lady of Shalott has going on, she's definitely alone. We don't know who shut her away in the castle or why, but it doesn't seem fair. We can tell that she's fed up with it; in fact she even says as much. Her desire to be part of the world, to interact, to love and be loved, is what pushes the whole plot of this poem. The fact that she never really breaks out of her loneliness is what gives "The Lady of Shalott" a tragic edge.
A. the raven reminds the speaker of his loneliness
