must prosper
Verbe régulier : prosper - prospered- prospered
Traduction française : prospérer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must prosper
you must prosper
she must prosper
we must prosper
you must prosper
they must prosper 	I must be prospering
you must be prospering
she must be prospering
we must be prospering
you must be prospering
they must be prospering	I must have prospered
you must have prospered
she must have prospered
we must have prospered
you must have prospered
they must have prospered	I must have been prospering
you must have been prospering
she must have been prospering
we must have been prospering
you must have been prospering
they must have been prospering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't prosper
you mustn't prosper
she mustn't prosper
we mustn't prosper
you mustn't prosper
they mustn't prosper 	I mustn't be prospering
you mustn't be prospering
she mustn't be prospering
we mustn't be prospering
you mustn't be prospering
they mustn't be prospering	I mustn't have prospered
you mustn't have prospered
she mustn't have prospered
we mustn't have prospered
you mustn't have prospered
they mustn't have prospered	I mustn't have been prospering
you mustn't have been prospering
she mustn't have been prospering
we mustn't have been prospering
you mustn't have been prospering
they mustn't have been prospering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I prosper?
must you prosper?
must she prosper?
must we prosper?
must you prosper?
must they prosper? 	must I be prospering?
must you be prospering?
must she be prospering?
must we be prospering?
must you be prospering?
must they be prospering? 	must I have prospered?
must you have prospered?
must she have prospered?
must we have prospered?
must you have prospered?
must they have prospered? 	must I have been prospering?
must you have been prospering?
must she have been prospering?
must we have been prospering?
must you have been prospering?
must they have been prospering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I prosper?
mustn't you prosper?
mustn't she prosper?
mustn't we prosper?
mustn't you prosper?
mustn't they prosper? 	mustn't I be prospering?
mustn't you be prospering?
mustn't she be prospering?
mustn't we be prospering?
mustn't you be prospering?
mustn't they be prospering? 	mustn't I have prospered?
mustn't you have prospered?
mustn't she have prospered?
mustn't we have prospered?
mustn't you have prospered?
mustn't they have prospered? 	mustn't I have been prospering?
mustn't you have been prospering?
mustn't she have been prospering?
mustn't we have been prospering?
mustn't you have been prospering?
mustn't they have been prospering?