Conjugação do verbo inglês
COULD ASSERT

Verbo regular: assert - asserted - asserted

Afirmação

Forma simple	Forma com V-ing
I could assert you could assert she could assert we could assert you could assert they could assert	I could be asserting you could be asserting she could be asserting we could be asserting you could be asserting they could be asserting
Perfeito	Perfeito com V-ing
I could have asserted you could have asserted she could have asserted we could have asserted you could have asserted they could have asserted	I could have been asserting you could have been asserting she could have been asserting we could have been asserting you could have been asserting they could have been asserting

Negação

Forma simple	Forma com V-ing
I could not assert you could not assert she could not assert we could not assert you could not assert they could not assert	I could not be asserting you could not be asserting she could not be asserting we could not be asserting you could not be asserting they could not be asserting
Perfeito	Perfeito com V-ing
I could not have asserted you could not have asserted she could not have asserted we could not have asserted you could not have asserted they could not have asserted	I could not have been asserting you could not have been asserting she could not have been asserting we could not have been asserting you could not have been asserting they could not have been asserting

Forma interrogativa

Forma simple	Forma com V-ing
could I assert? could you assert? could she assert? could we assert? could you assert? could they assert?	could I be asserting? could you be asserting? could she be asserting? could we be asserting? could you be asserting? could they be asserting?
Perfeito	Perfeito com V-ing
could I have asserted? could you have asserted? could she have asserted? could we have asserted? could you have asserted? could they have asserted?	could I have been asserting? could you have been asserting? could she have been asserting? could we have been asserting? could you have been asserting? could they have been asserting?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not assert? could you not assert? could she not assert? could we not assert? could you not assert? could they not assert?	could I not be asserting? could you not be asserting? could she not be asserting? could we not be asserting? could you not be asserting? could they not be asserting?
Perfeito	Perfeito com V-ing
could I not have asserted? could you not have asserted? could she not have asserted? could we not have asserted? could you not have asserted? could they not have asserted?	could I not have been asserting? could you not have been asserting? could she not have been asserting? could we not have been asserting? could you not have been asserting? could they not have been asserting?