could underline
Verbo regular: underline - underlined- underlined

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could underline
you could underline
he could underline
we could underline
you could underline
they could underline 	I could be underlining
you could be underlining
he could be underlining
we could be underlining
you could be underlining
they could be underlining	I could have underlined
you could have underlined
he could have underlined
we could have underlined
you could have underlined
they could have underlined	I could have been underlining
you could have been underlining
he could have been underlining
we could have been underlining
you could have been underlining
they could have been underlining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not underline
you could not underline
he could not underline
we could not underline
you could not underline
they could not underline 	I could not be underlining
you could not be underlining
he could not be underlining
we could not be underlining
you could not be underlining
they could not be underlining	I could not have underlined
you could not have underlined
he could not have underlined
we could not have underlined
you could not have underlined
they could not have underlined	I could not have been underlining
you could not have been underlining
he could not have been underlining
we could not have been underlining
you could not have been underlining
they could not have been underlining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I underline?
could you underline?
could he underline?
could we underline?
could you underline?
could they underline? 	could I be underlining?
could you be underlining?
could he be underlining?
could we be underlining?
could you be underlining?
could they be underlining? 	could I have underlined?
could you have underlined?
could he have underlined?
could we have underlined?
could you have underlined?
could they have underlined? 	could I have been underlining?
could you have been underlining?
could he have been underlining?
could we have been underlining?
could you have been underlining?
could they have been underlining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not underline?
could you not underline?
could he not underline?
could we not underline?
could you not underline?
could they not underline? 	could I not be underlining?
could you not be underlining?
could he not be underlining?
could we not be underlining?
could you not be underlining?
could they not be underlining? 	could I not have underlined?
could you not have underlined?
could he not have underlined?
could we not have underlined?
could you not have underlined?
could they not have underlined? 	could I not have been underlining?
could you not have been underlining?
could he not have been underlining?
could we not have been underlining?
could you not have been underlining?
could they not have been underlining?