I must better you must better he must better we must better you must better they must better
Forme en V-ing
I must be bettering you must be bettering he must be bettering we must be bettering you must be bettering they must be bettering
Perfect
I must have bettered you must have bettered he must have bettered we must have bettered you must have bettered they must have bettered
Perfect en V-ing
I must have been bettering you must have been bettering he must have been bettering we must have been bettering you must have been bettering they must have been bettering
Négation
Forme simple
I must not better you must not better he must not better we must not better you must not better they must not better
Forme en V-ing
I must not be bettering you must not be bettering he must not be bettering we must not be bettering you must not be bettering they must not be bettering
Perfect
I must not have bettered you must not have bettered he must not have bettered we must not have bettered you must not have bettered they must not have bettered
Perfect en V-ing
I must not have been bettering you must not have been bettering he must not have been bettering we must not have been bettering you must not have been bettering they must not have been bettering
Forme interrogative
Forme simple
must I better? must you better? must he better? must we better? must you better? must they better?
Forme en V-ing
must I be bettering? must you be bettering? must he be bettering? must we be bettering? must you be bettering? must they be bettering?
Perfect
must I have bettered? must you have bettered? must he have bettered? must we have bettered? must you have bettered? must they have bettered?
Perfect en V-ing
must I have been bettering? must you have been bettering? must he have been bettering? must we have been bettering? must you have been bettering? must they have been bettering?
Forme interro-négative
Forme simple
must I not better? must you not better? must he not better? must we not better? must you not better? must they not better?
Forme en V-ing
must I not be bettering? must you not be bettering? must he not be bettering? must we not be bettering? must you not be bettering? must they not be bettering?
Perfect
must I not have bettered? must you not have bettered? must he not have bettered? must we not have bettered? must you not have bettered? must they not have bettered?
Perfect en V-ing
must I not have been bettering? must you not have been bettering? must he not have been bettering? must we not have been bettering? must you not have been bettering? must they not have been bettering?