must discern
Verbe régulier : discern - discerned- discerned
Traduction française : discerner - distinguer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must discern
you must discern
she must discern
we must discern
you must discern
they must discern 	I must be discerning
you must be discerning
she must be discerning
we must be discerning
you must be discerning
they must be discerning	I must have discerned
you must have discerned
she must have discerned
we must have discerned
you must have discerned
they must have discerned	I must have been discerning
you must have been discerning
she must have been discerning
we must have been discerning
you must have been discerning
they must have been discerning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't discern
you mustn't discern
she mustn't discern
we mustn't discern
you mustn't discern
they mustn't discern 	I mustn't be discerning
you mustn't be discerning
she mustn't be discerning
we mustn't be discerning
you mustn't be discerning
they mustn't be discerning	I mustn't have discerned
you mustn't have discerned
she mustn't have discerned
we mustn't have discerned
you mustn't have discerned
they mustn't have discerned	I mustn't have been discerning
you mustn't have been discerning
she mustn't have been discerning
we mustn't have been discerning
you mustn't have been discerning
they mustn't have been discerning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I discern?
must you discern?
must she discern?
must we discern?
must you discern?
must they discern? 	must I be discerning?
must you be discerning?
must she be discerning?
must we be discerning?
must you be discerning?
must they be discerning? 	must I have discerned?
must you have discerned?
must she have discerned?
must we have discerned?
must you have discerned?
must they have discerned? 	must I have been discerning?
must you have been discerning?
must she have been discerning?
must we have been discerning?
must you have been discerning?
must they have been discerning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I discern?
mustn't you discern?
mustn't she discern?
mustn't we discern?
mustn't you discern?
mustn't they discern? 	mustn't I be discerning?
mustn't you be discerning?
mustn't she be discerning?
mustn't we be discerning?
mustn't you be discerning?
mustn't they be discerning? 	mustn't I have discerned?
mustn't you have discerned?
mustn't she have discerned?
mustn't we have discerned?
mustn't you have discerned?
mustn't they have discerned? 	mustn't I have been discerning?
mustn't you have been discerning?
mustn't she have been discerning?
mustn't we have been discerning?
mustn't you have been discerning?
mustn't they have been discerning?