Conjugação do verbo inglês
COULD RUB

Verbo regular: rub - rubbed - rubbed

Afirmação

Forma simple	Forma com V-ing
I could rub you could rub he could rub we could rub you could rub they could rub	I could be rubbing you could be rubbing he could be rubbing we could be rubbing you could be rubbing they could be rubbing
Perfeito	Perfeito com V-ing
I could have rubbed you could have rubbed he could have rubbed we could have rubbed you could have rubbed they could have rubbed	I could have been rubbing you could have been rubbing he could have been rubbing we could have been rubbing you could have been rubbing they could have been rubbing

Negação

Forma simple	Forma com V-ing
I couldn't rub you couldn't rub he couldn't rub we couldn't rub you couldn't rub they couldn't rub	I couldn't be rubbing you couldn't be rubbing he couldn't be rubbing we couldn't be rubbing you couldn't be rubbing they couldn't be rubbing
Perfeito	Perfeito com V-ing
I couldn't have rubbed you couldn't have rubbed he couldn't have rubbed we couldn't have rubbed you couldn't have rubbed they couldn't have rubbed	I couldn't have been rubbing you couldn't have been rubbing he couldn't have been rubbing we couldn't have been rubbing you couldn't have been rubbing they couldn't have been rubbing

Forma interrogativa

Forma simple	Forma com V-ing
could I rub? could you rub? could he rub? could we rub? could you rub? could they rub?	could I be rubbing? could you be rubbing? could he be rubbing? could we be rubbing? could you be rubbing? could they be rubbing?
Perfeito	Perfeito com V-ing
could I have rubbed? could you have rubbed? could he have rubbed? could we have rubbed? could you have rubbed? could they have rubbed?	could I have been rubbing? could you have been rubbing? could he have been rubbing? could we have been rubbing? could you have been rubbing? could they have been rubbing?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I rub? couldn't you rub? couldn't he rub? couldn't we rub? couldn't you rub? couldn't they rub?	couldn't I be rubbing? couldn't you be rubbing? couldn't he be rubbing? couldn't we be rubbing? couldn't you be rubbing? couldn't they be rubbing?
Perfeito	Perfeito com V-ing
couldn't I have rubbed? couldn't you have rubbed? couldn't he have rubbed? couldn't we have rubbed? couldn't you have rubbed? couldn't they have rubbed?	couldn't I have been rubbing? couldn't you have been rubbing? couldn't he have been rubbing? couldn't we have been rubbing? couldn't you have been rubbing? couldn't they have been rubbing?