①The picture is beautiful. Through association and imagination, the poet uses brilliant colors and chooses words with strong action characteristics, such as "swagger", "rippling", "crushed", etc., to depict a dynamic picture of dreaming in the Cam River. ②Beautiful imagery. The object of the poet's farewell is not people, but things. He uses images such as "golden willows", "green water plants", "tan water" and "clouds" to show the beautiful scenery of Cambridge and bring people a visual enjoyment of beauty. ③Beautiful rhythm. The whole poem has seven stanzas, four lines and one stanza, very neatly; single lines and double lines are staggered and arranged in a staggered grid, and there are changes in the neatness; each stanza rhymes, and the rhyme changes from stanza to stanza. In addition, the repeated use of repeated words such as "gently" and "quietly" also enhances the light rhythm of the poem. The poet wrote a farewell poem so interesting and beautiful, fully showing his true and deep love for Cambridge.