Conjugação do verbo inglês
COULD JOIN

Verbo regular: join - joined - joined

Afirmação

Forma simple	Forma com V-ing
I could join you could join he could join we could join you could join they could join	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	Perfeito com V-ing
I could have joined you could have joined he could have joined we could have joined you could have joined they could have joined	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	Forma com V-ing
I couldn't join you couldn't join he couldn't join we couldn't join you couldn't join they couldn't join	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	Perfeito com V-ing
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	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	Forma com V-ing
could I join? could you join? could he join? could we join? could you join? could they join?	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	Perfeito com V-ing
could I have joined? could you have joined? could he have joined? could we have joined? could you have joined? could they have joined?	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	Forma com V-ing
couldn't I join? couldn't you join? couldn't he join? couldn't we join? couldn't you join? couldn't they join?	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	Perfeito com V-ing
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?	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?