could define
Verbe régulier : define - defined- defined
Traduction française : définir - délimiter 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could define
you could define
he could define
we could define
you could define
they could define 	I could be defining
you could be defining
he could be defining
we could be defining
you could be defining
they could be defining	I could have defined
you could have defined
he could have defined
we could have defined
you could have defined
they could have defined	I could have been defining
you could have been defining
he could have been defining
we could have been defining
you could have been defining
they could have been defining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not define
you could not define
he could not define
we could not define
you could not define
they could not define 	I could not be defining
you could not be defining
he could not be defining
we could not be defining
you could not be defining
they could not be defining	I could not have defined
you could not have defined
he could not have defined
we could not have defined
you could not have defined
they could not have defined	I could not have been defining
you could not have been defining
he could not have been defining
we could not have been defining
you could not have been defining
they could not have been defining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I define?
could you define?
could he define?
could we define?
could you define?
could they define? 	could I be defining?
could you be defining?
could he be defining?
could we be defining?
could you be defining?
could they be defining? 	could I have defined?
could you have defined?
could he have defined?
could we have defined?
could you have defined?
could they have defined? 	could I have been defining?
could you have been defining?
could he have been defining?
could we have been defining?
could you have been defining?
could they have been defining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not define?
could you not define?
could he not define?
could we not define?
could you not define?
could they not define? 	could I not be defining?
could you not be defining?
could he not be defining?
could we not be defining?
could you not be defining?
could they not be defining? 	could I not have defined?
could you not have defined?
could he not have defined?
could we not have defined?
could you not have defined?
could they not have defined? 	could I not have been defining?
could you not have been defining?
could he not have been defining?
could we not have been defining?
could you not have been defining?
could they not have been defining?