Conjugação do verbo inglês
COULD SMOOTHEN

Verbo regular: smoothen - smoothened - smoothened

Afirmação

Forma simple	Forma com V-ing
I could smoothen you could smoothen he could smoothen we could smoothen you could smoothen they could smoothen	I could be smoothening you could be smoothening he could be smoothening we could be smoothening you could be smoothening they could be smoothening
Perfeito	Perfeito com V-ing
I could have smoothened you could have smoothened he could have smoothened we could have smoothened you could have smoothened they could have smoothened	I could have been smoothening you could have been smoothening he could have been smoothening we could have been smoothening you could have been smoothening they could have been smoothening

Negação

Forma simple	Forma com V-ing
I couldn't smoothen you couldn't smoothen he couldn't smoothen we couldn't smoothen you couldn't smoothen they couldn't smoothen	I couldn't be smoothening you couldn't be smoothening he couldn't be smoothening we couldn't be smoothening you couldn't be smoothening they couldn't be smoothening
Perfeito	Perfeito com V-ing
I couldn't have smoothened you couldn't have smoothened he couldn't have smoothened we couldn't have smoothened you couldn't have smoothened they couldn't have smoothened	I couldn't have been smoothening you couldn't have been smoothening he couldn't have been smoothening we couldn't have been smoothening you couldn't have been smoothening they couldn't have been smoothening

Forma interrogativa

Forma simple	Forma com V-ing
could I smoothen? could you smoothen? could he smoothen? could we smoothen? could you smoothen? could they smoothen?	could I be smoothening? could you be smoothening? could he be smoothening? could we be smoothening? could you be smoothening? could they be smoothening?
Perfeito	Perfeito com V-ing
could I have smoothened? could you have smoothened? could he have smoothened? could we have smoothened? could you have smoothened? could they have smoothened?	could I have been smoothening? could you have been smoothening? could he have been smoothening? could we have been smoothening? could you have been smoothening? could they have been smoothening?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I smoothen? couldn't you smoothen? couldn't he smoothen? couldn't we smoothen? couldn't you smoothen? couldn't they smoothen?	couldn't I be smoothening? couldn't you be smoothening? couldn't he be smoothening? couldn't we be smoothening? couldn't you be smoothening? couldn't they be smoothening?
Perfeito	Perfeito com V-ing
couldn't I have smoothened? couldn't you have smoothened? couldn't he have smoothened? couldn't we have smoothened? couldn't you have smoothened? couldn't they have smoothened?	couldn't I have been smoothening? couldn't you have been smoothening? couldn't he have been smoothening? couldn't we have been smoothening? couldn't you have been smoothening? couldn't they have been smoothening?