Conjugação do verbo inglês
COULD ATTEMPT

Verbo regular: attempt - attempted - attempted

Afirmação

Forma simple	Forma com V-ing
I could attempt you could attempt he could attempt we could attempt you could attempt they could attempt	I could be attempting you could be attempting he could be attempting we could be attempting you could be attempting they could be attempting
Perfeito	Perfeito com V-ing
I could have attempted you could have attempted he could have attempted we could have attempted you could have attempted they could have attempted	I could have been attempting you could have been attempting he could have been attempting we could have been attempting you could have been attempting they could have been attempting

Negação

Forma simple	Forma com V-ing
I couldn't attempt you couldn't attempt he couldn't attempt we couldn't attempt you couldn't attempt they couldn't attempt	I couldn't be attempting you couldn't be attempting he couldn't be attempting we couldn't be attempting you couldn't be attempting they couldn't be attempting
Perfeito	Perfeito com V-ing
I couldn't have attempted you couldn't have attempted he couldn't have attempted we couldn't have attempted you couldn't have attempted they couldn't have attempted	I couldn't have been attempting you couldn't have been attempting he couldn't have been attempting we couldn't have been attempting you couldn't have been attempting they couldn't have been attempting

Forma interrogativa

Forma simple	Forma com V-ing
could I attempt? could you attempt? could he attempt? could we attempt? could you attempt? could they attempt?	could I be attempting? could you be attempting? could he be attempting? could we be attempting? could you be attempting? could they be attempting?
Perfeito	Perfeito com V-ing
could I have attempted? could you have attempted? could he have attempted? could we have attempted? could you have attempted? could they have attempted?	could I have been attempting? could you have been attempting? could he have been attempting? could we have been attempting? could you have been attempting? could they have been attempting?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I attempt? couldn't you attempt? couldn't he attempt? couldn't we attempt? couldn't you attempt? couldn't they attempt?	couldn't I be attempting? couldn't you be attempting? couldn't he be attempting? couldn't we be attempting? couldn't you be attempting? couldn't they be attempting?
Perfeito	Perfeito com V-ing
couldn't I have attempted? couldn't you have attempted? couldn't he have attempted? couldn't we have attempted? couldn't you have attempted? couldn't they have attempted?	couldn't I have been attempting? couldn't you have been attempting? couldn't he have been attempting? couldn't we have been attempting? couldn't you have been attempting? couldn't they have been attempting?