could operate
Verbe régulier : operate - operated- operated
Traduction française : faire fonctionner - marcher 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could operate
you could operate
she could operate
we could operate
you could operate
they could operate 	I could be operating
you could be operating
she could be operating
we could be operating
you could be operating
they could be operating	I could have operated
you could have operated
she could have operated
we could have operated
you could have operated
they could have operated	I could have been operating
you could have been operating
she could have been operating
we could have been operating
you could have been operating
they could have been operating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not operate
you could not operate
she could not operate
we could not operate
you could not operate
they could not operate 	I could not be operating
you could not be operating
she could not be operating
we could not be operating
you could not be operating
they could not be operating	I could not have operated
you could not have operated
she could not have operated
we could not have operated
you could not have operated
they could not have operated	I could not have been operating
you could not have been operating
she could not have been operating
we could not have been operating
you could not have been operating
they could not have been operating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I operate?
could you operate?
could she operate?
could we operate?
could you operate?
could they operate? 	could I be operating?
could you be operating?
could she be operating?
could we be operating?
could you be operating?
could they be operating? 	could I have operated?
could you have operated?
could she have operated?
could we have operated?
could you have operated?
could they have operated? 	could I have been operating?
could you have been operating?
could she have been operating?
could we have been operating?
could you have been operating?
could they have been operating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not operate?
could you not operate?
could she not operate?
could we not operate?
could you not operate?
could they not operate? 	could I not be operating?
could you not be operating?
could she not be operating?
could we not be operating?
could you not be operating?
could they not be operating? 	could I not have operated?
could you not have operated?
could she not have operated?
could we not have operated?
could you not have operated?
could they not have operated? 	could I not have been operating?
could you not have been operating?
could she not have been operating?
could we not have been operating?
could you not have been operating?
could they not have been operating?