can trade
Verbo regular: trade - traded- traded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can trade
you can trade
he can trade
we can trade
you can trade
they can trade 	I can be trading
you can be trading
he can be trading
we can be trading
you can be trading
they can be trading	I can have traded
you can have traded
he can have traded
we can have traded
you can have traded
they can have traded	I can have been trading
you can have been trading
he can have been trading
we can have been trading
you can have been trading
they can have been trading	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot trade
you cannot trade
he cannot trade
we cannot trade
you cannot trade
they cannot trade 	I cannot be trading
you cannot be trading
he cannot be trading
we cannot be trading
you cannot be trading
they cannot be trading	I cannot have traded
you cannot have traded
he cannot have traded
we cannot have traded
you cannot have traded
they cannot have traded	I cannot have been trading
you cannot have been trading
he cannot have been trading
we cannot have been trading
you cannot have been trading
they cannot have been trading	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I trade?
can you trade?
can he trade?
can we trade?
can you trade?
can they trade? 	can I be trading?
can you be trading?
can he be trading?
can we be trading?
can you be trading?
can they be trading? 	can I have traded?
can you have traded?
can he have traded?
can we have traded?
can you have traded?
can they have traded? 	can I have been trading?
can you have been trading?
can he have been trading?
can we have been trading?
can you have been trading?
can they have been trading? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not trade?
can you not trade?
can he not trade?
can we not trade?
can you not trade?
can they not trade? 	can I not be trading?
can you not be trading?
can he not be trading?
can we not be trading?
can you not be trading?
can they not be trading? 	can I not have traded?
can you not have traded?
can he not have traded?
can we not have traded?
can you not have traded?
can they not have traded? 	can I not have been trading?
can you not have been trading?
can he not have been trading?
can we not have been trading?
can you not have been trading?
can they not have been trading?