【正确答案】正确答案：Browning"s principal achievement lies in his introducing of dramatic monologue. A dramatic monologue is a piece of spoken verse that offers great insight into the feelings of the speaker. Let"s take his My Last Duchess to analyze the effects of this form. In this poem, a duke speaks about his dead wife. We may sense that the duke kills his wife or causes her death, but no evidence is shown. The use of dramatic monologue works to separate the speaker from the poet, which forces the reader to work hard to understand the words of the speaker and thus, hopefully, get a grasp on what the poet is saying. We learn about the duke by what he says and how he says it. Through him, we also learn about his wife, the last duchess. We sense how their relationship stand, what his expectations are, how she responds, etc. In short, we learn a great deal about his characters by hearing how he thinks and feels about her. The duke is possessive, filled with family pride and a feeling of ownership over even the memory of his deceased wife. Ultimately, the monologue helps us to understand the main themes of the poem; power, patriarchy, marriage and egoism.