I could boo you could boo she could boo we could boo you could boo they could boo
Forma com V-ing
I could be booing you could be booing she could be booing we could be booing you could be booing they could be booing
Perfeito
I could have booed you could have booed she could have booed we could have booed you could have booed they could have booed
Perfeito com V-ing
I could have been booing you could have been booing she could have been booing we could have been booing you could have been booing they could have been booing
Negação
Forma simple
I couldn't boo you couldn't boo she couldn't boo we couldn't boo you couldn't boo they couldn't boo
Forma com V-ing
I couldn't be booing you couldn't be booing she couldn't be booing we couldn't be booing you couldn't be booing they couldn't be booing
Perfeito
I couldn't have booed you couldn't have booed she couldn't have booed we couldn't have booed you couldn't have booed they couldn't have booed
Perfeito com V-ing
I couldn't have been booing you couldn't have been booing she couldn't have been booing we couldn't have been booing you couldn't have been booing they couldn't have been booing
Forma interrogativa
Forma simple
could I boo? could you boo? could she boo? could we boo? could you boo? could they boo?
Forma com V-ing
could I be booing? could you be booing? could she be booing? could we be booing? could you be booing? could they be booing?
Perfeito
could I have booed? could you have booed? could she have booed? could we have booed? could you have booed? could they have booed?
Perfeito com V-ing
could I have been booing? could you have been booing? could she have been booing? could we have been booing? could you have been booing? could they have been booing?
Forma interro-Negação
Forma simple
couldn't I boo? couldn't you boo? couldn't she boo? couldn't we boo? couldn't you boo? couldn't they boo?
Forma com V-ing
couldn't I be booing? couldn't you be booing? couldn't she be booing? couldn't we be booing? couldn't you be booing? couldn't they be booing?
Perfeito
couldn't I have booed? couldn't you have booed? couldn't she have booed? couldn't we have booed? couldn't you have booed? couldn't they have booed?
Perfeito com V-ing
couldn't I have been booing? couldn't you have been booing? couldn't she have been booing? couldn't we have been booing? couldn't you have been booing? couldn't they have been booing?