Conjugação do verbo inglês
COULD BUZZ

Verbo regular: buzz - buzzed - buzzed

Afirmação

Forma simple	Forma com V-ing
I could buzz you could buzz he could buzz we could buzz you could buzz they could buzz	I could be buzzing you could be buzzing he could be buzzing we could be buzzing you could be buzzing they could be buzzing
Perfeito	Perfeito com V-ing
I could have buzzed you could have buzzed he could have buzzed we could have buzzed you could have buzzed they could have buzzed	I could have been buzzing you could have been buzzing he could have been buzzing we could have been buzzing you could have been buzzing they could have been buzzing

Negação

Forma simple	Forma com V-ing
I couldn't buzz you couldn't buzz he couldn't buzz we couldn't buzz you couldn't buzz they couldn't buzz	I couldn't be buzzing you couldn't be buzzing he couldn't be buzzing we couldn't be buzzing you couldn't be buzzing they couldn't be buzzing
Perfeito	Perfeito com V-ing
I couldn't have buzzed you couldn't have buzzed he couldn't have buzzed we couldn't have buzzed you couldn't have buzzed they couldn't have buzzed	I couldn't have been buzzing you couldn't have been buzzing he couldn't have been buzzing we couldn't have been buzzing you couldn't have been buzzing they couldn't have been buzzing

Forma interrogativa

Forma simple	Forma com V-ing
could I buzz? could you buzz? could he buzz? could we buzz? could you buzz? could they buzz?	could I be buzzing? could you be buzzing? could he be buzzing? could we be buzzing? could you be buzzing? could they be buzzing?
Perfeito	Perfeito com V-ing
could I have buzzed? could you have buzzed? could he have buzzed? could we have buzzed? could you have buzzed? could they have buzzed?	could I have been buzzing? could you have been buzzing? could he have been buzzing? could we have been buzzing? could you have been buzzing? could they have been buzzing?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I buzz? couldn't you buzz? couldn't he buzz? couldn't we buzz? couldn't you buzz? couldn't they buzz?	couldn't I be buzzing? couldn't you be buzzing? couldn't he be buzzing? couldn't we be buzzing? couldn't you be buzzing? couldn't they be buzzing?
Perfeito	Perfeito com V-ing
couldn't I have buzzed? couldn't you have buzzed? couldn't he have buzzed? couldn't we have buzzed? couldn't you have buzzed? couldn't they have buzzed?	couldn't I have been buzzing? couldn't you have been buzzing? couldn't he have been buzzing? couldn't we have been buzzing? couldn't you have been buzzing? couldn't they have been buzzing?