A: Good morning, class. I am your English teacher, Mr. Smith.
B: Good morning, Mr. Smith.
A: Today, we are going to discuss the novel "To Kill a Mockingbird." What do you know about this book?
B: I heard it's about racial discrimination in the South.
A: Yes, that's correct. The story takes place in the 1930s and is told through the eyes of a young girl named Scout. She witnesses the injustice surrounding a black man falsely accused of a crime.
B: That sounds interesting.
A: It is a powerful book that explores important social issues. Now, let's begin our discussion.请总结以上对话的主要内容。
在这段对话中，Mr. Smith介绍了自己的身份并介绍了今天的主题。学生B也表现出了对这个话题的浓厚兴趣。老师和学生之间的互动为本堂课的交流提供了良好的基础。