Conjugação do verbo inglês
COULD BUY

Verbo irregular: buy - bought - bought

Afirmação

Forma simple	Forma com V-ing
I could buy you could buy he could buy we could buy you could buy they could buy	I could be buying you could be buying he could be buying we could be buying you could be buying they could be buying
Perfeito	Perfeito com V-ing
I could have bought you could have bought he could have bought we could have bought you could have bought they could have bought	I could have been buying you could have been buying he could have been buying we could have been buying you could have been buying they could have been buying

Negação

Forma simple	Forma com V-ing
I couldn't buy you couldn't buy he couldn't buy we couldn't buy you couldn't buy they couldn't buy	I couldn't be buying you couldn't be buying he couldn't be buying we couldn't be buying you couldn't be buying they couldn't be buying
Perfeito	Perfeito com V-ing
I couldn't have bought you couldn't have bought he couldn't have bought we couldn't have bought you couldn't have bought they couldn't have bought	I couldn't have been buying you couldn't have been buying he couldn't have been buying we couldn't have been buying you couldn't have been buying they couldn't have been buying

Forma interrogativa

Forma simple	Forma com V-ing
could I buy? could you buy? could he buy? could we buy? could you buy? could they buy?	could I be buying? could you be buying? could he be buying? could we be buying? could you be buying? could they be buying?
Perfeito	Perfeito com V-ing
could I have bought? could you have bought? could he have bought? could we have bought? could you have bought? could they have bought?	could I have been buying? could you have been buying? could he have been buying? could we have been buying? could you have been buying? could they have been buying?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I buy? couldn't you buy? couldn't he buy? couldn't we buy? couldn't you buy? couldn't they buy?	couldn't I be buying? couldn't you be buying? couldn't he be buying? couldn't we be buying? couldn't you be buying? couldn't they be buying?
Perfeito	Perfeito com V-ing
couldn't I have bought? couldn't you have bought? couldn't he have bought? couldn't we have bought? couldn't you have bought? couldn't they have bought?	couldn't I have been buying? couldn't you have been buying? couldn't he have been buying? couldn't we have been buying? couldn't you have been buying? couldn't they have been buying?