could practise
Verbo regular: practise - practised- practised

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could practise
you could practise
he could practise
we could practise
you could practise
they could practise 	I could be practising
you could be practising
he could be practising
we could be practising
you could be practising
they could be practising	I could have practised
you could have practised
he could have practised
we could have practised
you could have practised
they could have practised	I could have been practising
you could have been practising
he could have been practising
we could have been practising
you could have been practising
they could have been practising	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not practise
you could not practise
he could not practise
we could not practise
you could not practise
they could not practise 	I could not be practising
you could not be practising
he could not be practising
we could not be practising
you could not be practising
they could not be practising	I could not have practised
you could not have practised
he could not have practised
we could not have practised
you could not have practised
they could not have practised	I could not have been practising
you could not have been practising
he could not have been practising
we could not have been practising
you could not have been practising
they could not have been practising	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I practise?
could you practise?
could he practise?
could we practise?
could you practise?
could they practise? 	could I be practising?
could you be practising?
could he be practising?
could we be practising?
could you be practising?
could they be practising? 	could I have practised?
could you have practised?
could he have practised?
could we have practised?
could you have practised?
could they have practised? 	could I have been practising?
could you have been practising?
could he have been practising?
could we have been practising?
could you have been practising?
could they have been practising? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not practise?
could you not practise?
could he not practise?
could we not practise?
could you not practise?
could they not practise? 	could I not be practising?
could you not be practising?
could he not be practising?
could we not be practising?
could you not be practising?
could they not be practising? 	could I not have practised?
could you not have practised?
could he not have practised?
could we not have practised?
could you not have practised?
could they not have practised? 	could I not have been practising?
could you not have been practising?
could he not have been practising?
could we not have been practising?
could you not have been practising?
could they not have been practising?