Some people may believe that going to classes should be optional, but I disagree.I don't understand how university students can expect to learn anything if they don't attend classes.Personal experience can help people learn about themselves and the world outside the classroom, but when it comes to learning about academic subjects, students need to be in class.

　　有些人可能认为，上课应该是选择性的，但我不同意。我不明白如果大学生不去上课，他们如何能够学到东西。个人的经验可以帮助人们了解自己和课堂以外的世界，但就学习学术课程来说，学生是需要去上课的。