I could terraform you could terraform he could terraform we could terraform you could terraform they could terraform
Forme en V-ing
I could be terraforming you could be terraforming he could be terraforming we could be terraforming you could be terraforming they could be terraforming
Perfect
I could have terraformed you could have terraformed he could have terraformed we could have terraformed you could have terraformed they could have terraformed
Perfect en V-ing
I could have been terraforming you could have been terraforming he could have been terraforming we could have been terraforming you could have been terraforming they could have been terraforming
Négation
Forme simple
I couldn't terraform you couldn't terraform he couldn't terraform we couldn't terraform you couldn't terraform they couldn't terraform
Forme en V-ing
I couldn't be terraforming you couldn't be terraforming he couldn't be terraforming we couldn't be terraforming you couldn't be terraforming they couldn't be terraforming
Perfect
I couldn't have terraformed you couldn't have terraformed he couldn't have terraformed we couldn't have terraformed you couldn't have terraformed they couldn't have terraformed
Perfect en V-ing
I couldn't have been terraforming you couldn't have been terraforming he couldn't have been terraforming we couldn't have been terraforming you couldn't have been terraforming they couldn't have been terraforming
Forme interrogative
Forme simple
could I terraform? could you terraform? could he terraform? could we terraform? could you terraform? could they terraform?
Forme en V-ing
could I be terraforming? could you be terraforming? could he be terraforming? could we be terraforming? could you be terraforming? could they be terraforming?
Perfect
could I have terraformed? could you have terraformed? could he have terraformed? could we have terraformed? could you have terraformed? could they have terraformed?
Perfect en V-ing
could I have been terraforming? could you have been terraforming? could he have been terraforming? could we have been terraforming? could you have been terraforming? could they have been terraforming?
Forme interro-négative
Forme simple
couldn't I terraform? couldn't you terraform? couldn't he terraform? couldn't we terraform? couldn't you terraform? couldn't they terraform?
Forme en V-ing
couldn't I be terraforming? couldn't you be terraforming? couldn't he be terraforming? couldn't we be terraforming? couldn't you be terraforming? couldn't they be terraforming?
Perfect
couldn't I have terraformed? couldn't you have terraformed? couldn't he have terraformed? couldn't we have terraformed? couldn't you have terraformed? couldn't they have terraformed?
Perfect en V-ing
couldn't I have been terraforming? couldn't you have been terraforming? couldn't he have been terraforming? couldn't we have been terraforming? couldn't you have been terraforming? couldn't they have been terraforming?