Conjugação do verbo inglês
COULD PREHARDEN

Verbo regular: preharden - prehardened - prehardened

Afirmação

Forma simple	Forma com V-ing
I could preharden you could preharden he could preharden we could preharden you could preharden they could preharden	I could be prehardening you could be prehardening he could be prehardening we could be prehardening you could be prehardening they could be prehardening
Perfeito	Perfeito com V-ing
I could have prehardened you could have prehardened he could have prehardened we could have prehardened you could have prehardened they could have prehardened	I could have been prehardening you could have been prehardening he could have been prehardening we could have been prehardening you could have been prehardening they could have been prehardening

Negação

Forma simple	Forma com V-ing
I couldn't preharden you couldn't preharden he couldn't preharden we couldn't preharden you couldn't preharden they couldn't preharden	I couldn't be prehardening you couldn't be prehardening he couldn't be prehardening we couldn't be prehardening you couldn't be prehardening they couldn't be prehardening
Perfeito	Perfeito com V-ing
I couldn't have prehardened you couldn't have prehardened he couldn't have prehardened we couldn't have prehardened you couldn't have prehardened they couldn't have prehardened	I couldn't have been prehardening you couldn't have been prehardening he couldn't have been prehardening we couldn't have been prehardening you couldn't have been prehardening they couldn't have been prehardening

Forma interrogativa

Forma simple	Forma com V-ing
could I preharden? could you preharden? could he preharden? could we preharden? could you preharden? could they preharden?	could I be prehardening? could you be prehardening? could he be prehardening? could we be prehardening? could you be prehardening? could they be prehardening?
Perfeito	Perfeito com V-ing
could I have prehardened? could you have prehardened? could he have prehardened? could we have prehardened? could you have prehardened? could they have prehardened?	could I have been prehardening? could you have been prehardening? could he have been prehardening? could we have been prehardening? could you have been prehardening? could they have been prehardening?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I preharden? couldn't you preharden? couldn't he preharden? couldn't we preharden? couldn't you preharden? couldn't they preharden?	couldn't I be prehardening? couldn't you be prehardening? couldn't he be prehardening? couldn't we be prehardening? couldn't you be prehardening? couldn't they be prehardening?
Perfeito	Perfeito com V-ing
couldn't I have prehardened? couldn't you have prehardened? couldn't he have prehardened? couldn't we have prehardened? couldn't you have prehardened? couldn't they have prehardened?	couldn't I have been prehardening? couldn't you have been prehardening? couldn't he have been prehardening? couldn't we have been prehardening? couldn't you have been prehardening? couldn't they have been prehardening?