Conjugaison du verbe anglais
COULD USE

Verbe régulier : use - used - used
Traduction française : se servir de aux modal

Affirmation

Forme simple	Forme en V-ing
I could use you could use he could use we could use you could use they could use	I could be using you could be using he could be using we could be using you could be using they could be using
Perfect	Perfect en V-ing
I could have used you could have used he could have used we could have used you could have used they could have used	I could have been using you could have been using he could have been using we could have been using you could have been using they could have been using

Négation

Forme simple	Forme en V-ing
I could not use you could not use he could not use we could not use you could not use they could not use	I could not be using you could not be using he could not be using we could not be using you could not be using they could not be using
Perfect	Perfect en V-ing
I could not have used you could not have used he could not have used we could not have used you could not have used they could not have used	I could not have been using you could not have been using he could not have been using we could not have been using you could not have been using they could not have been using

Forme interrogative

Forme simple	Forme en V-ing
could I use? could you use? could he use? could we use? could you use? could they use?	could I be using? could you be using? could he be using? could we be using? could you be using? could they be using?
Perfect	Perfect en V-ing
could I have used? could you have used? could he have used? could we have used? could you have used? could they have used?	could I have been using? could you have been using? could he have been using? could we have been using? could you have been using? could they have been using?

Forme interro-négative

Forme simple	Forme en V-ing
could I not use? could you not use? could he not use? could we not use? could you not use? could they not use?	could I not be using? could you not be using? could he not be using? could we not be using? could you not be using? could they not be using?
Perfect	Perfect en V-ing
could I not have used? could you not have used? could he not have used? could we not have used? could you not have used? could they not have used?	could I not have been using? could you not have been using? could he not have been using? could we not have been using? could you not have been using? could they not have been using?