could unscrew
Verbe régulier : unscrew - unscrewed- unscrewed
Traduction française : dévisser - se dévisser 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could unscrew
you could unscrew
he could unscrew
we could unscrew
you could unscrew
they could unscrew 	I could be unscrewing
you could be unscrewing
he could be unscrewing
we could be unscrewing
you could be unscrewing
they could be unscrewing	I could have unscrewed
you could have unscrewed
he could have unscrewed
we could have unscrewed
you could have unscrewed
they could have unscrewed	I could have been unscrewing
you could have been unscrewing
he could have been unscrewing
we could have been unscrewing
you could have been unscrewing
they could have been unscrewing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not unscrew
you could not unscrew
he could not unscrew
we could not unscrew
you could not unscrew
they could not unscrew 	I could not be unscrewing
you could not be unscrewing
he could not be unscrewing
we could not be unscrewing
you could not be unscrewing
they could not be unscrewing	I could not have unscrewed
you could not have unscrewed
he could not have unscrewed
we could not have unscrewed
you could not have unscrewed
they could not have unscrewed	I could not have been unscrewing
you could not have been unscrewing
he could not have been unscrewing
we could not have been unscrewing
you could not have been unscrewing
they could not have been unscrewing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I unscrew?
could you unscrew?
could he unscrew?
could we unscrew?
could you unscrew?
could they unscrew? 	could I be unscrewing?
could you be unscrewing?
could he be unscrewing?
could we be unscrewing?
could you be unscrewing?
could they be unscrewing? 	could I have unscrewed?
could you have unscrewed?
could he have unscrewed?
could we have unscrewed?
could you have unscrewed?
could they have unscrewed? 	could I have been unscrewing?
could you have been unscrewing?
could he have been unscrewing?
could we have been unscrewing?
could you have been unscrewing?
could they have been unscrewing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not unscrew?
could you not unscrew?
could he not unscrew?
could we not unscrew?
could you not unscrew?
could they not unscrew? 	could I not be unscrewing?
could you not be unscrewing?
could he not be unscrewing?
could we not be unscrewing?
could you not be unscrewing?
could they not be unscrewing? 	could I not have unscrewed?
could you not have unscrewed?
could he not have unscrewed?
could we not have unscrewed?
could you not have unscrewed?
could they not have unscrewed? 	could I not have been unscrewing?
could you not have been unscrewing?
could he not have been unscrewing?
could we not have been unscrewing?
could you not have been unscrewing?
could they not have been unscrewing?