I must ameliorate you must ameliorate he must ameliorate we must ameliorate you must ameliorate they must ameliorate
Forme en V-ing
I must be ameliorating you must be ameliorating he must be ameliorating we must be ameliorating you must be ameliorating they must be ameliorating
Perfect
I must have ameliorated you must have ameliorated he must have ameliorated we must have ameliorated you must have ameliorated they must have ameliorated
Perfect en V-ing
I must have been ameliorating you must have been ameliorating he must have been ameliorating we must have been ameliorating you must have been ameliorating they must have been ameliorating
Négation
Forme simple
I mustn't ameliorate you mustn't ameliorate he mustn't ameliorate we mustn't ameliorate you mustn't ameliorate they mustn't ameliorate
Forme en V-ing
I mustn't be ameliorating you mustn't be ameliorating he mustn't be ameliorating we mustn't be ameliorating you mustn't be ameliorating they mustn't be ameliorating
Perfect
I mustn't have ameliorated you mustn't have ameliorated he mustn't have ameliorated we mustn't have ameliorated you mustn't have ameliorated they mustn't have ameliorated
Perfect en V-ing
I mustn't have been ameliorating you mustn't have been ameliorating he mustn't have been ameliorating we mustn't have been ameliorating you mustn't have been ameliorating they mustn't have been ameliorating
Forme interrogative
Forme simple
must I ameliorate? must you ameliorate? must he ameliorate? must we ameliorate? must you ameliorate? must they ameliorate?
Forme en V-ing
must I be ameliorating? must you be ameliorating? must he be ameliorating? must we be ameliorating? must you be ameliorating? must they be ameliorating?
Perfect
must I have ameliorated? must you have ameliorated? must he have ameliorated? must we have ameliorated? must you have ameliorated? must they have ameliorated?
Perfect en V-ing
must I have been ameliorating? must you have been ameliorating? must he have been ameliorating? must we have been ameliorating? must you have been ameliorating? must they have been ameliorating?
Forme interro-négative
Forme simple
mustn't I ameliorate? mustn't you ameliorate? mustn't he ameliorate? mustn't we ameliorate? mustn't you ameliorate? mustn't they ameliorate?
Forme en V-ing
mustn't I be ameliorating? mustn't you be ameliorating? mustn't he be ameliorating? mustn't we be ameliorating? mustn't you be ameliorating? mustn't they be ameliorating?
Perfect
mustn't I have ameliorated? mustn't you have ameliorated? mustn't he have ameliorated? mustn't we have ameliorated? mustn't you have ameliorated? mustn't they have ameliorated?
Perfect en V-ing
mustn't I have been ameliorating? mustn't you have been ameliorating? mustn't he have been ameliorating? mustn't we have been ameliorating? mustn't you have been ameliorating? mustn't they have been ameliorating?