上个星期天晚上，你和家人一起去看京剧。谈谈去之前你的心情及看过之后的体会。词数80个左右。

提示词语：look forward to ... , national opera, express Chinese culture, famous stories, facial paintings, wonderful gestures and fighting, have a nice evening ... 开头已给出，不计入总词数。

Last Sunday evening, my father, mother and I went to see Beijing Opera ...

班级管理的原则主要有______、______、自觉性原则和整体性原则。