could perfect
Verbe régulier : perfect - perfected- perfected
Traduction française : perfectionner - mettre au point 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could perfect
you could perfect
he could perfect
we could perfect
you could perfect
they could perfect 	I could be perfecting
you could be perfecting
he could be perfecting
we could be perfecting
you could be perfecting
they could be perfecting	I could have perfected
you could have perfected
he could have perfected
we could have perfected
you could have perfected
they could have perfected	I could have been perfecting
you could have been perfecting
he could have been perfecting
we could have been perfecting
you could have been perfecting
they could have been perfecting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not perfect
you could not perfect
he could not perfect
we could not perfect
you could not perfect
they could not perfect 	I could not be perfecting
you could not be perfecting
he could not be perfecting
we could not be perfecting
you could not be perfecting
they could not be perfecting	I could not have perfected
you could not have perfected
he could not have perfected
we could not have perfected
you could not have perfected
they could not have perfected	I could not have been perfecting
you could not have been perfecting
he could not have been perfecting
we could not have been perfecting
you could not have been perfecting
they could not have been perfecting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I perfect?
could you perfect?
could he perfect?
could we perfect?
could you perfect?
could they perfect? 	could I be perfecting?
could you be perfecting?
could he be perfecting?
could we be perfecting?
could you be perfecting?
could they be perfecting? 	could I have perfected?
could you have perfected?
could he have perfected?
could we have perfected?
could you have perfected?
could they have perfected? 	could I have been perfecting?
could you have been perfecting?
could he have been perfecting?
could we have been perfecting?
could you have been perfecting?
could they have been perfecting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not perfect?
could you not perfect?
could he not perfect?
could we not perfect?
could you not perfect?
could they not perfect? 	could I not be perfecting?
could you not be perfecting?
could he not be perfecting?
could we not be perfecting?
could you not be perfecting?
could they not be perfecting? 	could I not have perfected?
could you not have perfected?
could he not have perfected?
could we not have perfected?
could you not have perfected?
could they not have perfected? 	could I not have been perfecting?
could you not have been perfecting?
could he not have been perfecting?
could we not have been perfecting?
could you not have been perfecting?
could they not have been perfecting?