Conjugaison du verbe anglais
COULD ROISTER

Verbe régulier : roister - roistered - roistered

Affirmation

Forme simple	Forme en V-ing
I could roister you could roister he could roister we could roister you could roister they could roister	I could be roistering you could be roistering he could be roistering we could be roistering you could be roistering they could be roistering
Perfect	Perfect en V-ing
I could have roistered you could have roistered he could have roistered we could have roistered you could have roistered they could have roistered	I could have been roistering you could have been roistering he could have been roistering we could have been roistering you could have been roistering they could have been roistering

Négation

Forme simple	Forme en V-ing
I couldn't roister you couldn't roister he couldn't roister we couldn't roister you couldn't roister they couldn't roister	I couldn't be roistering you couldn't be roistering he couldn't be roistering we couldn't be roistering you couldn't be roistering they couldn't be roistering
Perfect	Perfect en V-ing
I couldn't have roistered you couldn't have roistered he couldn't have roistered we couldn't have roistered you couldn't have roistered they couldn't have roistered	I couldn't have been roistering you couldn't have been roistering he couldn't have been roistering we couldn't have been roistering you couldn't have been roistering they couldn't have been roistering

Forme interrogative

Forme simple	Forme en V-ing
could I roister? could you roister? could he roister? could we roister? could you roister? could they roister?	could I be roistering? could you be roistering? could he be roistering? could we be roistering? could you be roistering? could they be roistering?
Perfect	Perfect en V-ing
could I have roistered? could you have roistered? could he have roistered? could we have roistered? could you have roistered? could they have roistered?	could I have been roistering? could you have been roistering? could he have been roistering? could we have been roistering? could you have been roistering? could they have been roistering?

Forme interro-négative

Forme simple	Forme en V-ing
couldn't I roister? couldn't you roister? couldn't he roister? couldn't we roister? couldn't you roister? couldn't they roister?	couldn't I be roistering? couldn't you be roistering? couldn't he be roistering? couldn't we be roistering? couldn't you be roistering? couldn't they be roistering?
Perfect	Perfect en V-ing
couldn't I have roistered? couldn't you have roistered? couldn't he have roistered? couldn't we have roistered? couldn't you have roistered? couldn't they have roistered?	couldn't I have been roistering? couldn't you have been roistering? couldn't he have been roistering? couldn't we have been roistering? couldn't you have been roistering? couldn't they have been roistering?