I could cite you could cite he could cite we could cite you could cite they could cite
Forma com V-ing
I could be citing you could be citing he could be citing we could be citing you could be citing they could be citing
Perfeito
I could have cited you could have cited he could have cited we could have cited you could have cited they could have cited
Perfeito com V-ing
I could have been citing you could have been citing he could have been citing we could have been citing you could have been citing they could have been citing
Negação
Forma simple
I couldn't cite you couldn't cite he couldn't cite we couldn't cite you couldn't cite they couldn't cite
Forma com V-ing
I couldn't be citing you couldn't be citing he couldn't be citing we couldn't be citing you couldn't be citing they couldn't be citing
Perfeito
I couldn't have cited you couldn't have cited he couldn't have cited we couldn't have cited you couldn't have cited they couldn't have cited
Perfeito com V-ing
I couldn't have been citing you couldn't have been citing he couldn't have been citing we couldn't have been citing you couldn't have been citing they couldn't have been citing
Forma interrogativa
Forma simple
could I cite? could you cite? could he cite? could we cite? could you cite? could they cite?
Forma com V-ing
could I be citing? could you be citing? could he be citing? could we be citing? could you be citing? could they be citing?
Perfeito
could I have cited? could you have cited? could he have cited? could we have cited? could you have cited? could they have cited?
Perfeito com V-ing
could I have been citing? could you have been citing? could he have been citing? could we have been citing? could you have been citing? could they have been citing?
Forma interro-Negação
Forma simple
couldn't I cite? couldn't you cite? couldn't he cite? couldn't we cite? couldn't you cite? couldn't they cite?
Forma com V-ing
couldn't I be citing? couldn't you be citing? couldn't he be citing? couldn't we be citing? couldn't you be citing? couldn't they be citing?
Perfeito
couldn't I have cited? couldn't you have cited? couldn't he have cited? couldn't we have cited? couldn't you have cited? couldn't they have cited?
Perfeito com V-ing
couldn't I have been citing? couldn't you have been citing? couldn't he have been citing? couldn't we have been citing? couldn't you have been citing? couldn't they have been citing?