Conjugação do verbo inglês
COULD WORSEN

Verbo regular: worsen - worsened - worsened

Afirmação

Forma simple	Forma com V-ing
I could worsen you could worsen he could worsen we could worsen you could worsen they could worsen	I could be worsening you could be worsening he could be worsening we could be worsening you could be worsening they could be worsening
Perfeito	Perfeito com V-ing
I could have worsened you could have worsened he could have worsened we could have worsened you could have worsened they could have worsened	I could have been worsening you could have been worsening he could have been worsening we could have been worsening you could have been worsening they could have been worsening

Negação

Forma simple	Forma com V-ing
I couldn't worsen you couldn't worsen he couldn't worsen we couldn't worsen you couldn't worsen they couldn't worsen	I couldn't be worsening you couldn't be worsening he couldn't be worsening we couldn't be worsening you couldn't be worsening they couldn't be worsening
Perfeito	Perfeito com V-ing
I couldn't have worsened you couldn't have worsened he couldn't have worsened we couldn't have worsened you couldn't have worsened they couldn't have worsened	I couldn't have been worsening you couldn't have been worsening he couldn't have been worsening we couldn't have been worsening you couldn't have been worsening they couldn't have been worsening

Forma interrogativa

Forma simple	Forma com V-ing
could I worsen? could you worsen? could he worsen? could we worsen? could you worsen? could they worsen?	could I be worsening? could you be worsening? could he be worsening? could we be worsening? could you be worsening? could they be worsening?
Perfeito	Perfeito com V-ing
could I have worsened? could you have worsened? could he have worsened? could we have worsened? could you have worsened? could they have worsened?	could I have been worsening? could you have been worsening? could he have been worsening? could we have been worsening? could you have been worsening? could they have been worsening?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I worsen? couldn't you worsen? couldn't he worsen? couldn't we worsen? couldn't you worsen? couldn't they worsen?	couldn't I be worsening? couldn't you be worsening? couldn't he be worsening? couldn't we be worsening? couldn't you be worsening? couldn't they be worsening?
Perfeito	Perfeito com V-ing
couldn't I have worsened? couldn't you have worsened? couldn't he have worsened? couldn't we have worsened? couldn't you have worsened? couldn't they have worsened?	couldn't I have been worsening? couldn't you have been worsening? couldn't he have been worsening? couldn't we have been worsening? couldn't you have been worsening? couldn't they have been worsening?