I could join you could join he could join we could join you could join they could join
Forma com V-ing
I could be joining you could be joining he could be joining we could be joining you could be joining they could be joining
Perfeito
I could have joined you could have joined he could have joined we could have joined you could have joined they could have joined
Perfeito com V-ing
I could have been joining you could have been joining he could have been joining we could have been joining you could have been joining they could have been joining
Negação
Forma simple
I couldn't join you couldn't join he couldn't join we couldn't join you couldn't join they couldn't join
Forma com V-ing
I couldn't be joining you couldn't be joining he couldn't be joining we couldn't be joining you couldn't be joining they couldn't be joining
Perfeito
I couldn't have joined you couldn't have joined he couldn't have joined we couldn't have joined you couldn't have joined they couldn't have joined
Perfeito com V-ing
I couldn't have been joining you couldn't have been joining he couldn't have been joining we couldn't have been joining you couldn't have been joining they couldn't have been joining
Forma interrogativa
Forma simple
could I join? could you join? could he join? could we join? could you join? could they join?
Forma com V-ing
could I be joining? could you be joining? could he be joining? could we be joining? could you be joining? could they be joining?
Perfeito
could I have joined? could you have joined? could he have joined? could we have joined? could you have joined? could they have joined?
Perfeito com V-ing
could I have been joining? could you have been joining? could he have been joining? could we have been joining? could you have been joining? could they have been joining?
Forma interro-Negação
Forma simple
couldn't I join? couldn't you join? couldn't he join? couldn't we join? couldn't you join? couldn't they join?
Forma com V-ing
couldn't I be joining? couldn't you be joining? couldn't he be joining? couldn't we be joining? couldn't you be joining? couldn't they be joining?
Perfeito
couldn't I have joined? couldn't you have joined? couldn't he have joined? couldn't we have joined? couldn't you have joined? couldn't they have joined?
Perfeito com V-ing
couldn't I have been joining? couldn't you have been joining? couldn't he have been joining? couldn't we have been joining? couldn't you have been joining? couldn't they have been joining?