must forewarn
Verbe régulier : forewarn - forewarned- forewarned
Traduction française : prévenir - avertir 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must forewarn
you must forewarn
she must forewarn
we must forewarn
you must forewarn
they must forewarn 	I must be forewarning
you must be forewarning
she must be forewarning
we must be forewarning
you must be forewarning
they must be forewarning	I must have forewarned
you must have forewarned
she must have forewarned
we must have forewarned
you must have forewarned
they must have forewarned	I must have been forewarning
you must have been forewarning
she must have been forewarning
we must have been forewarning
you must have been forewarning
they must have been forewarning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not forewarn
you must not forewarn
she must not forewarn
we must not forewarn
you must not forewarn
they must not forewarn 	I must not be forewarning
you must not be forewarning
she must not be forewarning
we must not be forewarning
you must not be forewarning
they must not be forewarning	I must not have forewarned
you must not have forewarned
she must not have forewarned
we must not have forewarned
you must not have forewarned
they must not have forewarned	I must not have been forewarning
you must not have been forewarning
she must not have been forewarning
we must not have been forewarning
you must not have been forewarning
they must not have been forewarning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I forewarn?
must you forewarn?
must she forewarn?
must we forewarn?
must you forewarn?
must they forewarn? 	must I be forewarning?
must you be forewarning?
must she be forewarning?
must we be forewarning?
must you be forewarning?
must they be forewarning? 	must I have forewarned?
must you have forewarned?
must she have forewarned?
must we have forewarned?
must you have forewarned?
must they have forewarned? 	must I have been forewarning?
must you have been forewarning?
must she have been forewarning?
must we have been forewarning?
must you have been forewarning?
must they have been forewarning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not forewarn?
must you not forewarn?
must she not forewarn?
must we not forewarn?
must you not forewarn?
must they not forewarn? 	must I not be forewarning?
must you not be forewarning?
must she not be forewarning?
must we not be forewarning?
must you not be forewarning?
must they not be forewarning? 	must I not have forewarned?
must you not have forewarned?
must she not have forewarned?
must we not have forewarned?
must you not have forewarned?
must they not have forewarned? 	must I not have been forewarning?
must you not have been forewarning?
must she not have been forewarning?
must we not have been forewarning?
must you not have been forewarning?
must they not have been forewarning?