1. Theme and artistic conception of poetry: Poetry takes the scene of spring as the background and expresses the beauty and vitality of spring. Through the image of "whistling", it shows the lightness and joy of spring. It can be noted that the theme of poetry is the beauty and vitality of spring, and the artistic conception is relaxed and pleasant.
2. The structure and expression of poetry: Poetry is a form of free verse, without clear rhythm and meter. By describing the scenery in spring, the poet's inner feelings and emotions are expressed. It can be explained that the structure of poetry is free verse, and the expression technique is description and lyricism.
3. Language and image of poetry: The language of poetry is concise and vivid. By describing the scene of spring and the image of "whistling", it shows the beauty and relaxation of spring. It can be noted that the language of poetry is concise and vivid, and the image is concrete and vivid.
4. The author and background of the poem: The author of the poem is Zheng Chouyu, a famous contemporary poet, writer and critic in China. You can indicate the author of the poem with the creation of modern poetry as the background.