The theme of a poem is generally not specified, so it can only be discussed for a single poem, and the same is true for novels. However, apart from the theme, the artistic features of poetry can also be summarized as: 1, with strong emotion and rich imagination; 2. The language is concise, paying attention to deviating from everyday language and full of ambiguity; 3. The performance structure of jumping; 4. Unique musical beauty.
I hope these can help you.
References:
Introduction to Literary Theory, Jishuihe, published by Xiangtan University.
The theme is the meaning of the main idea, and the topic sentence is to express the author's purpose in writing this article. Which sentence in the article can best summarize the author's writing intention is the topic sentence.
Just like the sentence that summarizes the central idea in the vernacular.