could umpire
Verbe régulier : umpire - umpired- umpired
Traduction française : arbitrer - servir d'arbitre 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could umpire
you could umpire
she could umpire
we could umpire
you could umpire
they could umpire 	I could be umpiring
you could be umpiring
she could be umpiring
we could be umpiring
you could be umpiring
they could be umpiring	I could have umpired
you could have umpired
she could have umpired
we could have umpired
you could have umpired
they could have umpired	I could have been umpiring
you could have been umpiring
she could have been umpiring
we could have been umpiring
you could have been umpiring
they could have been umpiring	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not umpire
you could not umpire
she could not umpire
we could not umpire
you could not umpire
they could not umpire 	I could not be umpiring
you could not be umpiring
she could not be umpiring
we could not be umpiring
you could not be umpiring
they could not be umpiring	I could not have umpired
you could not have umpired
she could not have umpired
we could not have umpired
you could not have umpired
they could not have umpired	I could not have been umpiring
you could not have been umpiring
she could not have been umpiring
we could not have been umpiring
you could not have been umpiring
they could not have been umpiring	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I umpire?
could you umpire?
could she umpire?
could we umpire?
could you umpire?
could they umpire? 	could I be umpiring?
could you be umpiring?
could she be umpiring?
could we be umpiring?
could you be umpiring?
could they be umpiring? 	could I have umpired?
could you have umpired?
could she have umpired?
could we have umpired?
could you have umpired?
could they have umpired? 	could I have been umpiring?
could you have been umpiring?
could she have been umpiring?
could we have been umpiring?
could you have been umpiring?
could they have been umpiring? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not umpire?
could you not umpire?
could she not umpire?
could we not umpire?
could you not umpire?
could they not umpire? 	could I not be umpiring?
could you not be umpiring?
could she not be umpiring?
could we not be umpiring?
could you not be umpiring?
could they not be umpiring? 	could I not have umpired?
could you not have umpired?
could she not have umpired?
could we not have umpired?
could you not have umpired?
could they not have umpired? 	could I not have been umpiring?
could you not have been umpiring?
could she not have been umpiring?
could we not have been umpiring?
could you not have been umpiring?
could they not have been umpiring?