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