could double-time
Verbo regular: double-time - double-timed- double-timed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could double-time
you could double-time
she could double-time
we could double-time
you could double-time
they could double-time 	I could be double-timing
you could be double-timing
she could be double-timing
we could be double-timing
you could be double-timing
they could be double-timing	I could have double-timed
you could have double-timed
she could have double-timed
we could have double-timed
you could have double-timed
they could have double-timed	I could have been double-timing
you could have been double-timing
she could have been double-timing
we could have been double-timing
you could have been double-timing
they could have been double-timing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not double-time
you could not double-time
she could not double-time
we could not double-time
you could not double-time
they could not double-time 	I could not be double-timing
you could not be double-timing
she could not be double-timing
we could not be double-timing
you could not be double-timing
they could not be double-timing	I could not have double-timed
you could not have double-timed
she could not have double-timed
we could not have double-timed
you could not have double-timed
they could not have double-timed	I could not have been double-timing
you could not have been double-timing
she could not have been double-timing
we could not have been double-timing
you could not have been double-timing
they could not have been double-timing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I double-time?
could you double-time?
could she double-time?
could we double-time?
could you double-time?
could they double-time? 	could I be double-timing?
could you be double-timing?
could she be double-timing?
could we be double-timing?
could you be double-timing?
could they be double-timing? 	could I have double-timed?
could you have double-timed?
could she have double-timed?
could we have double-timed?
could you have double-timed?
could they have double-timed? 	could I have been double-timing?
could you have been double-timing?
could she have been double-timing?
could we have been double-timing?
could you have been double-timing?
could they have been double-timing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not double-time?
could you not double-time?
could she not double-time?
could we not double-time?
could you not double-time?
could they not double-time? 	could I not be double-timing?
could you not be double-timing?
could she not be double-timing?
could we not be double-timing?
could you not be double-timing?
could they not be double-timing? 	could I not have double-timed?
could you not have double-timed?
could she not have double-timed?
could we not have double-timed?
could you not have double-timed?
could they not have double-timed? 	could I not have been double-timing?
could you not have been double-timing?
could she not have been double-timing?
could we not have been double-timing?
could you not have been double-timing?
could they not have been double-timing?