Conjugação do verbo inglês
COULD DULL

Verbo regular: dull - dulled - dulled

Afirmação

Forma simple	Forma com V-ing
I could dull you could dull he could dull we could dull you could dull they could dull	I could be dulling you could be dulling he could be dulling we could be dulling you could be dulling they could be dulling
Perfeito	Perfeito com V-ing
I could have dulled you could have dulled he could have dulled we could have dulled you could have dulled they could have dulled	I could have been dulling you could have been dulling he could have been dulling we could have been dulling you could have been dulling they could have been dulling

Negação

Forma simple	Forma com V-ing
I couldn't dull you couldn't dull he couldn't dull we couldn't dull you couldn't dull they couldn't dull	I couldn't be dulling you couldn't be dulling he couldn't be dulling we couldn't be dulling you couldn't be dulling they couldn't be dulling
Perfeito	Perfeito com V-ing
I couldn't have dulled you couldn't have dulled he couldn't have dulled we couldn't have dulled you couldn't have dulled they couldn't have dulled	I couldn't have been dulling you couldn't have been dulling he couldn't have been dulling we couldn't have been dulling you couldn't have been dulling they couldn't have been dulling

Forma interrogativa

Forma simple	Forma com V-ing
could I dull? could you dull? could he dull? could we dull? could you dull? could they dull?	could I be dulling? could you be dulling? could he be dulling? could we be dulling? could you be dulling? could they be dulling?
Perfeito	Perfeito com V-ing
could I have dulled? could you have dulled? could he have dulled? could we have dulled? could you have dulled? could they have dulled?	could I have been dulling? could you have been dulling? could he have been dulling? could we have been dulling? could you have been dulling? could they have been dulling?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I dull? couldn't you dull? couldn't he dull? couldn't we dull? couldn't you dull? couldn't they dull?	couldn't I be dulling? couldn't you be dulling? couldn't he be dulling? couldn't we be dulling? couldn't you be dulling? couldn't they be dulling?
Perfeito	Perfeito com V-ing
couldn't I have dulled? couldn't you have dulled? couldn't he have dulled? couldn't we have dulled? couldn't you have dulled? couldn't they have dulled?	couldn't I have been dulling? couldn't you have been dulling? couldn't he have been dulling? couldn't we have been dulling? couldn't you have been dulling? couldn't they have been dulling?