can turn
Verbo regular: turn - turned- turned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can turn
you can turn
she can turn
we can turn
you can turn
they can turn 	I can be turning
you can be turning
she can be turning
we can be turning
you can be turning
they can be turning	I can have turned
you can have turned
she can have turned
we can have turned
you can have turned
they can have turned	I can have been turning
you can have been turning
she can have been turning
we can have been turning
you can have been turning
they can have been turning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot turn
you cannot turn
she cannot turn
we cannot turn
you cannot turn
they cannot turn 	I cannot be turning
you cannot be turning
she cannot be turning
we cannot be turning
you cannot be turning
they cannot be turning	I cannot have turned
you cannot have turned
she cannot have turned
we cannot have turned
you cannot have turned
they cannot have turned	I cannot have been turning
you cannot have been turning
she cannot have been turning
we cannot have been turning
you cannot have been turning
they cannot have been turning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I turn?
can you turn?
can she turn?
can we turn?
can you turn?
can they turn? 	can I be turning?
can you be turning?
can she be turning?
can we be turning?
can you be turning?
can they be turning? 	can I have turned?
can you have turned?
can she have turned?
can we have turned?
can you have turned?
can they have turned? 	can I have been turning?
can you have been turning?
can she have been turning?
can we have been turning?
can you have been turning?
can they have been turning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not turn?
can you not turn?
can she not turn?
can we not turn?
can you not turn?
can they not turn? 	can I not be turning?
can you not be turning?
can she not be turning?
can we not be turning?
can you not be turning?
can they not be turning? 	can I not have turned?
can you not have turned?
can she not have turned?
can we not have turned?
can you not have turned?
can they not have turned? 	can I not have been turning?
can you not have been turning?
can she not have been turning?
can we not have been turning?
can you not have been turning?
can they not have been turning?