I could place you could place he could place we could place you could place they could place
Forma com V-ing
I could be placing you could be placing he could be placing we could be placing you could be placing they could be placing
Perfeito
I could have placed you could have placed he could have placed we could have placed you could have placed they could have placed
Perfeito com V-ing
I could have been placing you could have been placing he could have been placing we could have been placing you could have been placing they could have been placing
Negação
Forma simple
I couldn't place you couldn't place he couldn't place we couldn't place you couldn't place they couldn't place
Forma com V-ing
I couldn't be placing you couldn't be placing he couldn't be placing we couldn't be placing you couldn't be placing they couldn't be placing
Perfeito
I couldn't have placed you couldn't have placed he couldn't have placed we couldn't have placed you couldn't have placed they couldn't have placed
Perfeito com V-ing
I couldn't have been placing you couldn't have been placing he couldn't have been placing we couldn't have been placing you couldn't have been placing they couldn't have been placing
Forma interrogativa
Forma simple
could I place? could you place? could he place? could we place? could you place? could they place?
Forma com V-ing
could I be placing? could you be placing? could he be placing? could we be placing? could you be placing? could they be placing?
Perfeito
could I have placed? could you have placed? could he have placed? could we have placed? could you have placed? could they have placed?
Perfeito com V-ing
could I have been placing? could you have been placing? could he have been placing? could we have been placing? could you have been placing? could they have been placing?
Forma interro-Negação
Forma simple
couldn't I place? couldn't you place? couldn't he place? couldn't we place? couldn't you place? couldn't they place?
Forma com V-ing
couldn't I be placing? couldn't you be placing? couldn't he be placing? couldn't we be placing? couldn't you be placing? couldn't they be placing?
Perfeito
couldn't I have placed? couldn't you have placed? couldn't he have placed? couldn't we have placed? couldn't you have placed? couldn't they have placed?
Perfeito com V-ing
couldn't I have been placing? couldn't you have been placing? couldn't he have been placing? couldn't we have been placing? couldn't you have been placing? couldn't they have been placing?