Conjugação do verbo inglês
COULD TWIN

Verbo regular: twin - twinned - twinned

Afirmação

Forma simple	Forma com V-ing
I could twin you could twin he could twin we could twin you could twin they could twin	I could be twinning you could be twinning he could be twinning we could be twinning you could be twinning they could be twinning
Perfeito	Perfeito com V-ing
I could have twinned you could have twinned he could have twinned we could have twinned you could have twinned they could have twinned	I could have been twinning you could have been twinning he could have been twinning we could have been twinning you could have been twinning they could have been twinning

Negação

Forma simple	Forma com V-ing
I couldn't twin you couldn't twin he couldn't twin we couldn't twin you couldn't twin they couldn't twin	I couldn't be twinning you couldn't be twinning he couldn't be twinning we couldn't be twinning you couldn't be twinning they couldn't be twinning
Perfeito	Perfeito com V-ing
I couldn't have twinned you couldn't have twinned he couldn't have twinned we couldn't have twinned you couldn't have twinned they couldn't have twinned	I couldn't have been twinning you couldn't have been twinning he couldn't have been twinning we couldn't have been twinning you couldn't have been twinning they couldn't have been twinning

Forma interrogativa

Forma simple	Forma com V-ing
could I twin? could you twin? could he twin? could we twin? could you twin? could they twin?	could I be twinning? could you be twinning? could he be twinning? could we be twinning? could you be twinning? could they be twinning?
Perfeito	Perfeito com V-ing
could I have twinned? could you have twinned? could he have twinned? could we have twinned? could you have twinned? could they have twinned?	could I have been twinning? could you have been twinning? could he have been twinning? could we have been twinning? could you have been twinning? could they have been twinning?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I twin? couldn't you twin? couldn't he twin? couldn't we twin? couldn't you twin? couldn't they twin?	couldn't I be twinning? couldn't you be twinning? couldn't he be twinning? couldn't we be twinning? couldn't you be twinning? couldn't they be twinning?
Perfeito	Perfeito com V-ing
couldn't I have twinned? couldn't you have twinned? couldn't he have twinned? couldn't we have twinned? couldn't you have twinned? couldn't they have twinned?	couldn't I have been twinning? couldn't you have been twinning? couldn't he have been twinning? couldn't we have been twinning? couldn't you have been twinning? couldn't they have been twinning?