Conjugación del verbo inglés
COULD ASSERT

Verbo regular: assert - asserted - asserted

Afirmación

Forma simple	Forma con 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
Perfecto	Perfecto con 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

Negación

Forma simple	Forma con V-ing
I couldn't assert you couldn't assert she couldn't assert we couldn't assert you couldn't assert they couldn't assert	I couldn't be asserting you couldn't be asserting she couldn't be asserting we couldn't be asserting you couldn't be asserting they couldn't be asserting
Perfecto	Perfecto con V-ing
I couldn't have asserted you couldn't have asserted she couldn't have asserted we couldn't have asserted you couldn't have asserted they couldn't have asserted	I couldn't have been asserting you couldn't have been asserting she couldn't have been asserting we couldn't have been asserting you couldn't have been asserting they couldn't have been asserting

Forma interrogativa

Forma simple	Forma con 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?
Perfecto	Perfecto con 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-negativa

Forma simple	Forma con V-ing
couldn't I assert? couldn't you assert? couldn't she assert? couldn't we assert? couldn't you assert? couldn't they assert?	couldn't I be asserting? couldn't you be asserting? couldn't she be asserting? couldn't we be asserting? couldn't you be asserting? couldn't they be asserting?
Perfecto	Perfecto con V-ing
couldn't I have asserted? couldn't you have asserted? couldn't she have asserted? couldn't we have asserted? couldn't you have asserted? couldn't they have asserted?	couldn't I have been asserting? couldn't you have been asserting? couldn't she have been asserting? couldn't we have been asserting? couldn't you have been asserting? couldn't they have been asserting?