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
she must prewarn
we must prewarn
you must prewarn
they must prewarn 	I must be prewarning
you must be prewarning
she must be prewarning
we must be prewarning
you must be prewarning
they must be prewarning	I must have prewarned
you must have prewarned
she 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
she 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 must not prewarn
you must not prewarn
she must not prewarn
we must not prewarn
you must not prewarn
they must not prewarn 	I must not be prewarning
you must not be prewarning
she must not be prewarning
we must not be prewarning
you must not be prewarning
they must not be prewarning	I must not have prewarned
you must not have prewarned
she must not have prewarned
we must not have prewarned
you must not have prewarned
they must not have prewarned	I must not have been prewarning
you must not have been prewarning
she must not have been prewarning
we must not have been prewarning
you must not have been prewarning
they must not have been prewarning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I prewarn?
must you prewarn?
must she prewarn?
must we prewarn?
must you prewarn?
must they prewarn? 	must I be prewarning?
must you be prewarning?
must she be prewarning?
must we be prewarning?
must you be prewarning?
must they be prewarning? 	must I have prewarned?
must you have prewarned?
must she 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 she 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 	
must I not prewarn?
must you not prewarn?
must she not prewarn?
must we not prewarn?
must you not prewarn?
must they not prewarn? 	must I not be prewarning?
must you not be prewarning?
must she not be prewarning?
must we not be prewarning?
must you not be prewarning?
must they not be prewarning? 	must I not have prewarned?
must you not have prewarned?
must she not have prewarned?
must we not have prewarned?
must you not have prewarned?
must they not have prewarned? 	must I not have been prewarning?
must you not have been prewarning?
must she not have been prewarning?
must we not have been prewarning?
must you not have been prewarning?
must they not have been prewarning?