must referee
Verbe régulier : referee - refereed- refereed
Traduction française : arbitrer - être arbitre 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must referee
you must referee
he must referee
we must referee
you must referee
they must referee 	I must be refereeing
you must be refereeing
he must be refereeing
we must be refereeing
you must be refereeing
they must be refereeing	I must have refereed
you must have refereed
he must have refereed
we must have refereed
you must have refereed
they must have refereed	I must have been refereeing
you must have been refereeing
he must have been refereeing
we must have been refereeing
you must have been refereeing
they must have been refereeing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not referee
you must not referee
he must not referee
we must not referee
you must not referee
they must not referee 	I must not be refereeing
you must not be refereeing
he must not be refereeing
we must not be refereeing
you must not be refereeing
they must not be refereeing	I must not have refereed
you must not have refereed
he must not have refereed
we must not have refereed
you must not have refereed
they must not have refereed	I must not have been refereeing
you must not have been refereeing
he must not have been refereeing
we must not have been refereeing
you must not have been refereeing
they must not have been refereeing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I referee?
must you referee?
must he referee?
must we referee?
must you referee?
must they referee? 	must I be refereeing?
must you be refereeing?
must he be refereeing?
must we be refereeing?
must you be refereeing?
must they be refereeing? 	must I have refereed?
must you have refereed?
must he have refereed?
must we have refereed?
must you have refereed?
must they have refereed? 	must I have been refereeing?
must you have been refereeing?
must he have been refereeing?
must we have been refereeing?
must you have been refereeing?
must they have been refereeing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not referee?
must you not referee?
must he not referee?
must we not referee?
must you not referee?
must they not referee? 	must I not be refereeing?
must you not be refereeing?
must he not be refereeing?
must we not be refereeing?
must you not be refereeing?
must they not be refereeing? 	must I not have refereed?
must you not have refereed?
must he not have refereed?
must we not have refereed?
must you not have refereed?
must they not have refereed? 	must I not have been refereeing?
must you not have been refereeing?
must he not have been refereeing?
must we not have been refereeing?
must you not have been refereeing?
must they not have been refereeing?