must prewarn
Verbe régulier : prewarn - prewarned- prewarned

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must prewarn
you must prewarn
he must prewarn
we must prewarn
you must prewarn
they must prewarn 	I must be prewarning
you must be prewarning
he must be prewarning
we must be prewarning
you must be prewarning
they must be prewarning	I must have prewarned
you must have prewarned
he must have prewarned
we must have prewarned
you must have prewarned
they must have prewarned	I must have been prewarning
you must have been prewarning
he must have been prewarning
we must have been prewarning
you must have been prewarning
they must have been prewarning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't prewarn
you mustn't prewarn
he mustn't prewarn
we mustn't prewarn
you mustn't prewarn
they mustn't prewarn 	I mustn't be prewarning
you mustn't be prewarning
he mustn't be prewarning
we mustn't be prewarning
you mustn't be prewarning
they mustn't be prewarning	I mustn't have prewarned
you mustn't have prewarned
he mustn't have prewarned
we mustn't have prewarned
you mustn't have prewarned
they mustn't have prewarned	I mustn't have been prewarning
you mustn't have been prewarning
he mustn't have been prewarning
we mustn't have been prewarning
you mustn't have been prewarning
they mustn't have been prewarning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I prewarn?
must you prewarn?
must he prewarn?
must we prewarn?
must you prewarn?
must they prewarn? 	must I be prewarning?
must you be prewarning?
must he be prewarning?
must we be prewarning?
must you be prewarning?
must they be prewarning? 	must I have prewarned?
must you have prewarned?
must he have prewarned?
must we have prewarned?
must you have prewarned?
must they have prewarned? 	must I have been prewarning?
must you have been prewarning?
must he have been prewarning?
must we have been prewarning?
must you have been prewarning?
must they have been prewarning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I prewarn?
mustn't you prewarn?
mustn't he prewarn?
mustn't we prewarn?
mustn't you prewarn?
mustn't they prewarn? 	mustn't I be prewarning?
mustn't you be prewarning?
mustn't he be prewarning?
mustn't we be prewarning?
mustn't you be prewarning?
mustn't they be prewarning? 	mustn't I have prewarned?
mustn't you have prewarned?
mustn't he have prewarned?
mustn't we have prewarned?
mustn't you have prewarned?
mustn't they have prewarned? 	mustn't I have been prewarning?
mustn't you have been prewarning?
mustn't he have been prewarning?
mustn't we have been prewarning?
mustn't you have been prewarning?
mustn't they have been prewarning?