老师通过比较“大李杜”的诗风，帮助学生理解浪漫主义与现实主义的差异。
By comparing the poetic styles of the “Big Li and Du,” the teacher helped students understand the difference between Romanticism and Realism.
By comparing the poetic styles of the “Big Li and Du,” the teacher helped students understand the difference between Romanticism and Realism.