Conjugación del verbo inglés
COULD DULL

Verbo regular: dull - dulled - dulled

Afirmación

Forma simple	Forma con V-ing
I could dull you could dull she could dull we could dull you could dull they could dull	I could be dulling you could be dulling she could be dulling we could be dulling you could be dulling they could be dulling
Perfecto	Perfecto con V-ing
I could have dulled you could have dulled she 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 she could have been dulling we could have been dulling you could have been dulling they could have been dulling

Negación

Forma simple	Forma con V-ing
I could not dull you could not dull she could not dull we could not dull you could not dull they could not dull	I could not be dulling you could not be dulling she could not be dulling we could not be dulling you could not be dulling they could not be dulling
Perfecto	Perfecto con V-ing
I could not have dulled you could not have dulled she could not have dulled we could not have dulled you could not have dulled they could not have dulled	I could not have been dulling you could not have been dulling she could not have been dulling we could not have been dulling you could not have been dulling they could not have been dulling

Forma interrogativa

Forma simple	Forma con V-ing
could I dull? could you dull? could she dull? could we dull? could you dull? could they dull?	could I be dulling? could you be dulling? could she be dulling? could we be dulling? could you be dulling? could they be dulling?
Perfecto	Perfecto con V-ing
could I have dulled? could you have dulled? could she 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 she have been dulling? could we have been dulling? could you have been dulling? could they have been dulling?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not dull? could you not dull? could she not dull? could we not dull? could you not dull? could they not dull?	could I not be dulling? could you not be dulling? could she not be dulling? could we not be dulling? could you not be dulling? could they not be dulling?
Perfecto	Perfecto con V-ing
could I not have dulled? could you not have dulled? could she not have dulled? could we not have dulled? could you not have dulled? could they not have dulled?	could I not have been dulling? could you not have been dulling? could she not have been dulling? could we not have been dulling? could you not have been dulling? could they not have been dulling?