I could climb you could climb he could climb we could climb you could climb they could climb
Forma con V-ing
I could be climbing you could be climbing he could be climbing we could be climbing you could be climbing they could be climbing
Perfecto
I could have climbed you could have climbed he could have climbed we could have climbed you could have climbed they could have climbed
Perfecto con V-ing
I could have been climbing you could have been climbing he could have been climbing we could have been climbing you could have been climbing they could have been climbing
Negación
Forma simple
I couldn't climb you couldn't climb he couldn't climb we couldn't climb you couldn't climb they couldn't climb
Forma con V-ing
I couldn't be climbing you couldn't be climbing he couldn't be climbing we couldn't be climbing you couldn't be climbing they couldn't be climbing
Perfecto
I couldn't have climbed you couldn't have climbed he couldn't have climbed we couldn't have climbed you couldn't have climbed they couldn't have climbed
Perfecto con V-ing
I couldn't have been climbing you couldn't have been climbing he couldn't have been climbing we couldn't have been climbing you couldn't have been climbing they couldn't have been climbing
Forma interrogativa
Forma simple
could I climb? could you climb? could he climb? could we climb? could you climb? could they climb?
Forma con V-ing
could I be climbing? could you be climbing? could he be climbing? could we be climbing? could you be climbing? could they be climbing?
Perfecto
could I have climbed? could you have climbed? could he have climbed? could we have climbed? could you have climbed? could they have climbed?
Perfecto con V-ing
could I have been climbing? could you have been climbing? could he have been climbing? could we have been climbing? could you have been climbing? could they have been climbing?
Forma interro-negativa
Forma simple
couldn't I climb? couldn't you climb? couldn't he climb? couldn't we climb? couldn't you climb? couldn't they climb?
Forma con V-ing
couldn't I be climbing? couldn't you be climbing? couldn't he be climbing? couldn't we be climbing? couldn't you be climbing? couldn't they be climbing?
Perfecto
couldn't I have climbed? couldn't you have climbed? couldn't he have climbed? couldn't we have climbed? couldn't you have climbed? couldn't they have climbed?
Perfecto con V-ing
couldn't I have been climbing? couldn't you have been climbing? couldn't he have been climbing? couldn't we have been climbing? couldn't you have been climbing? couldn't they have been climbing?