How does Keats exploit meter, rhyme and other litterary devices to serve and construct meaningn in his poem?

     The meter used in “To Autumn” is iambic pentameter, which means that each line of the poem is comprised of five iambic feet (unstressed syllable followed by a stressed syllable). For example, “With fruit the vines that round the thatch-eves run.” When reading the poem out loud, it becomes apparent that iambic pentameter creates a specific rhythm and natural flow to the poem. Keats may have chosen this rhythm to signify on the rhythm of nature and to support some of the images he presents in the poem such as “Thy hair soft-lifted by the winnowing wind” or “Among the river sallows, borne aloft.”
     In the first stanza of the poem, Keats uses ABAB rhyme pattern followed by CDEDCCE. In the second and third stanza, he uses the rhyme pattern CDECDDE. The shift from the very regular and monotonous rhyme pattern ABAB to a somewhat more complex rhyme pattern aligns with the meaning the poem tries to convey; namely that as summer is coming to a close, nature changes.
     Keats uses several literary and stylistic devices to convey meaning. For example, he uses alteration (“lambs loud”) to draw attention to images of autumn created in the poem. He also uses rhetorical questions (“Where are the songs of spring? Ay, Where are they?”) to invite the reader to behold and contemplate nature as it changes in fall. Last but not least, there are several instances of anthropomorphism in the poem (“And still more, later flowers for the bees / Until they think warm days will never cease”) to convey the notion that nature and its creatures are living sentient beings.