Analysis:

Situation 1:

Courses are really boring or of little practical value: for example, Mao Jue and Deng Li ... These courses are actually ok with textbooks. If the teacher can't tell anything but the book, it's a bit of a waste of time, so skipping classes is excusable, and of course it's not recommended …

Situation 2:

Personal subjective factors such as bad mood: such as lovelorn ... this situation is quite special. It is estimated that even if you go to the classroom, you can't really calm down and listen to the class. Skipping classes at least won't affect others, so you have a process of adjustment. So skipping classes seems to be encouraged-of course, for this reason, it can't be more than twice.

Situation 3:

Want to do something else: for example, play basketball, surf the internet ... this is resolutely opposed! Needless to say, the reason ...

Situation 4:

Other reasons: then there is only a specific analysis of the specific situation.

Conclusion: truancy is not a good phenomenon, which reflects many problems, depending on the situation.

Personal opinion: although excusable, it will never be supported!