can threaten
Verbo regular: threaten - threatened- threatened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can threaten
you can threaten
he can threaten
we can threaten
you can threaten
they can threaten 	I can be threatening
you can be threatening
he can be threatening
we can be threatening
you can be threatening
they can be threatening	I can have threatened
you can have threatened
he can have threatened
we can have threatened
you can have threatened
they can have threatened	I can have been threatening
you can have been threatening
he can have been threatening
we can have been threatening
you can have been threatening
they can have been threatening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot threaten
you cannot threaten
he cannot threaten
we cannot threaten
you cannot threaten
they cannot threaten 	I cannot be threatening
you cannot be threatening
he cannot be threatening
we cannot be threatening
you cannot be threatening
they cannot be threatening	I cannot have threatened
you cannot have threatened
he cannot have threatened
we cannot have threatened
you cannot have threatened
they cannot have threatened	I cannot have been threatening
you cannot have been threatening
he cannot have been threatening
we cannot have been threatening
you cannot have been threatening
they cannot have been threatening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I threaten?
can you threaten?
can he threaten?
can we threaten?
can you threaten?
can they threaten? 	can I be threatening?
can you be threatening?
can he be threatening?
can we be threatening?
can you be threatening?
can they be threatening? 	can I have threatened?
can you have threatened?
can he have threatened?
can we have threatened?
can you have threatened?
can they have threatened? 	can I have been threatening?
can you have been threatening?
can he have been threatening?
can we have been threatening?
can you have been threatening?
can they have been threatening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not threaten?
can you not threaten?
can he not threaten?
can we not threaten?
can you not threaten?
can they not threaten? 	can I not be threatening?
can you not be threatening?
can he not be threatening?
can we not be threatening?
can you not be threatening?
can they not be threatening? 	can I not have threatened?
can you not have threatened?
can he not have threatened?
can we not have threatened?
can you not have threatened?
can they not have threatened? 	can I not have been threatening?
can you not have been threatening?
can he not have been threatening?
can we not have been threatening?
can you not have been threatening?
can they not have been threatening?