Cuidado, este verbo pode não existir, a conjugação é dada como exemplo.
Afirmação
Forma simple
I could turn in you could turn in he could turn in we could turn in you could turn in they could turn in
Forma com V-ing
I could be turn ining you could be turn ining he could be turn ining we could be turn ining you could be turn ining they could be turn ining
Perfeito
I could have turn ined you could have turn ined he could have turn ined we could have turn ined you could have turn ined they could have turn ined
Perfeito com V-ing
I could have been turn ining you could have been turn ining he could have been turn ining we could have been turn ining you could have been turn ining they could have been turn ining
Negação
Forma simple
I couldn't turn in you couldn't turn in he couldn't turn in we couldn't turn in you couldn't turn in they couldn't turn in
Forma com V-ing
I couldn't be turn ining you couldn't be turn ining he couldn't be turn ining we couldn't be turn ining you couldn't be turn ining they couldn't be turn ining
Perfeito
I couldn't have turn ined you couldn't have turn ined he couldn't have turn ined we couldn't have turn ined you couldn't have turn ined they couldn't have turn ined
Perfeito com V-ing
I couldn't have been turn ining you couldn't have been turn ining he couldn't have been turn ining we couldn't have been turn ining you couldn't have been turn ining they couldn't have been turn ining
Forma interrogativa
Forma simple
could I turn in? could you turn in? could he turn in? could we turn in? could you turn in? could they turn in?
Forma com V-ing
could I be turn ining? could you be turn ining? could he be turn ining? could we be turn ining? could you be turn ining? could they be turn ining?
Perfeito
could I have turn ined? could you have turn ined? could he have turn ined? could we have turn ined? could you have turn ined? could they have turn ined?
Perfeito com V-ing
could I have been turn ining? could you have been turn ining? could he have been turn ining? could we have been turn ining? could you have been turn ining? could they have been turn ining?
Forma interro-Negação
Forma simple
couldn't I turn in? couldn't you turn in? couldn't he turn in? couldn't we turn in? couldn't you turn in? couldn't they turn in?
Forma com V-ing
couldn't I be turn ining? couldn't you be turn ining? couldn't he be turn ining? couldn't we be turn ining? couldn't you be turn ining? couldn't they be turn ining?
Perfeito
couldn't I have turn ined? couldn't you have turn ined? couldn't he have turn ined? couldn't we have turn ined? couldn't you have turn ined? couldn't they have turn ined?
Perfeito com V-ing
couldn't I have been turn ining? couldn't you have been turn ining? couldn't he have been turn ining? couldn't we have been turn ining? couldn't you have been turn ining? couldn't they have been turn ining?