Conjugação do verbo inglês
COULD CRYSTALLIZE

Verbo regular: crystallize - crystallized - crystallized

Afirmação

Forma simple	Forma com V-ing
I could crystallize you could crystallize he could crystallize we could crystallize you could crystallize they could crystallize	I could be crystallizing you could be crystallizing he could be crystallizing we could be crystallizing you could be crystallizing they could be crystallizing
Perfeito	Perfeito com V-ing
I could have crystallized you could have crystallized he could have crystallized we could have crystallized you could have crystallized they could have crystallized	I could have been crystallizing you could have been crystallizing he could have been crystallizing we could have been crystallizing you could have been crystallizing they could have been crystallizing

Negação

Forma simple	Forma com V-ing
I couldn't crystallize you couldn't crystallize he couldn't crystallize we couldn't crystallize you couldn't crystallize they couldn't crystallize	I couldn't be crystallizing you couldn't be crystallizing he couldn't be crystallizing we couldn't be crystallizing you couldn't be crystallizing they couldn't be crystallizing
Perfeito	Perfeito com V-ing
I couldn't have crystallized you couldn't have crystallized he couldn't have crystallized we couldn't have crystallized you couldn't have crystallized they couldn't have crystallized	I couldn't have been crystallizing you couldn't have been crystallizing he couldn't have been crystallizing we couldn't have been crystallizing you couldn't have been crystallizing they couldn't have been crystallizing

Forma interrogativa

Forma simple	Forma com V-ing
could I crystallize? could you crystallize? could he crystallize? could we crystallize? could you crystallize? could they crystallize?	could I be crystallizing? could you be crystallizing? could he be crystallizing? could we be crystallizing? could you be crystallizing? could they be crystallizing?
Perfeito	Perfeito com V-ing
could I have crystallized? could you have crystallized? could he have crystallized? could we have crystallized? could you have crystallized? could they have crystallized?	could I have been crystallizing? could you have been crystallizing? could he have been crystallizing? could we have been crystallizing? could you have been crystallizing? could they have been crystallizing?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I crystallize? couldn't you crystallize? couldn't he crystallize? couldn't we crystallize? couldn't you crystallize? couldn't they crystallize?	couldn't I be crystallizing? couldn't you be crystallizing? couldn't he be crystallizing? couldn't we be crystallizing? couldn't you be crystallizing? couldn't they be crystallizing?
Perfeito	Perfeito com V-ing
couldn't I have crystallized? couldn't you have crystallized? couldn't he have crystallized? couldn't we have crystallized? couldn't you have crystallized? couldn't they have crystallized?	couldn't I have been crystallizing? couldn't you have been crystallizing? couldn't he have been crystallizing? couldn't we have been crystallizing? couldn't you have been crystallizing? couldn't they have been crystallizing?