bonsoir pourriez vous m'aidez svp​

Bonjour

As you know, you must show respect at all times and you mustn't talk back to the teachers.

Please also remember -especially you, Michael- that you mustn't use your cellphone in school.

You must ask for a hall pass if you want to leave the classroom.

Finally, your parents must telephone the school if you're absent.

MUST  devoir = obligation

MUSTN'T (must not)= interdiction

I must = je dois  (obligation)

I mustn't = je ne dois pas (c'est interdit)

Bonne soirée ☺☺☺