Conjugação do verbo inglês
COULD SIUM

Verbo regular: sium - siumed - siumed

Afirmação

Forma simple	Forma com V-ing
I could sium you could sium he could sium we could sium you could sium they could sium	I could be siuming you could be siuming he could be siuming we could be siuming you could be siuming they could be siuming
Perfeito	Perfeito com V-ing
I could have siumed you could have siumed he could have siumed we could have siumed you could have siumed they could have siumed	I could have been siuming you could have been siuming he could have been siuming we could have been siuming you could have been siuming they could have been siuming

Negação

Forma simple	Forma com V-ing
I couldn't sium you couldn't sium he couldn't sium we couldn't sium you couldn't sium they couldn't sium	I couldn't be siuming you couldn't be siuming he couldn't be siuming we couldn't be siuming you couldn't be siuming they couldn't be siuming
Perfeito	Perfeito com V-ing
I couldn't have siumed you couldn't have siumed he couldn't have siumed we couldn't have siumed you couldn't have siumed they couldn't have siumed	I couldn't have been siuming you couldn't have been siuming he couldn't have been siuming we couldn't have been siuming you couldn't have been siuming they couldn't have been siuming

Forma interrogativa

Forma simple	Forma com V-ing
could I sium? could you sium? could he sium? could we sium? could you sium? could they sium?	could I be siuming? could you be siuming? could he be siuming? could we be siuming? could you be siuming? could they be siuming?
Perfeito	Perfeito com V-ing
could I have siumed? could you have siumed? could he have siumed? could we have siumed? could you have siumed? could they have siumed?	could I have been siuming? could you have been siuming? could he have been siuming? could we have been siuming? could you have been siuming? could they have been siuming?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I sium? couldn't you sium? couldn't he sium? couldn't we sium? couldn't you sium? couldn't they sium?	couldn't I be siuming? couldn't you be siuming? couldn't he be siuming? couldn't we be siuming? couldn't you be siuming? couldn't they be siuming?
Perfeito	Perfeito com V-ing
couldn't I have siumed? couldn't you have siumed? couldn't he have siumed? couldn't we have siumed? couldn't you have siumed? couldn't they have siumed?	couldn't I have been siuming? couldn't you have been siuming? couldn't he have been siuming? couldn't we have been siuming? couldn't you have been siuming? couldn't they have been siuming?