Peraturan sekolah yang menggunakannya must dan must not

must
1) you must do your homework
2) you must wear a school uniform
3) you must not be late to school

must not
1) you must not bully students
2) you must not smoke in school
3) you must not run in the library

:)

Must(harus) : peraturan tertulis, ditunjukan untuk semua orang dan mengandung sanksi merupakan kewajiban (expressing compulsary)
ex :
1. students must wear their school uniforms
2. foreigners must learn local language
3. parents must take care of their children