must threaten
Verbo regular: threaten - threatened- threatened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must threaten
you must threaten
he must threaten
we must threaten
you must threaten
they must threaten 	I must be threatening
you must be threatening
he must be threatening
we must be threatening
you must be threatening
they must be threatening	I must have threatened
you must have threatened
he must have threatened
we must have threatened
you must have threatened
they must have threatened	I must have been threatening
you must have been threatening
he must have been threatening
we must have been threatening
you must have been threatening
they must have been threatening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't threaten
you mustn't threaten
he mustn't threaten
we mustn't threaten
you mustn't threaten
they mustn't threaten 	I mustn't be threatening
you mustn't be threatening
he mustn't be threatening
we mustn't be threatening
you mustn't be threatening
they mustn't be threatening	I mustn't have threatened
you mustn't have threatened
he mustn't have threatened
we mustn't have threatened
you mustn't have threatened
they mustn't have threatened	I mustn't have been threatening
you mustn't have been threatening
he mustn't have been threatening
we mustn't have been threatening
you mustn't have been threatening
they mustn't have been threatening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I threaten?
must you threaten?
must he threaten?
must we threaten?
must you threaten?
must they threaten? 	must I be threatening?
must you be threatening?
must he be threatening?
must we be threatening?
must you be threatening?
must they be threatening? 	must I have threatened?
must you have threatened?
must he have threatened?
must we have threatened?
must you have threatened?
must they have threatened? 	must I have been threatening?
must you have been threatening?
must he have been threatening?
must we have been threatening?
must you have been threatening?
must they have been threatening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I threaten?
mustn't you threaten?
mustn't he threaten?
mustn't we threaten?
mustn't you threaten?
mustn't they threaten? 	mustn't I be threatening?
mustn't you be threatening?
mustn't he be threatening?
mustn't we be threatening?
mustn't you be threatening?
mustn't they be threatening? 	mustn't I have threatened?
mustn't you have threatened?
mustn't he have threatened?
mustn't we have threatened?
mustn't you have threatened?
mustn't they have threatened? 	mustn't I have been threatening?
mustn't you have been threatening?
mustn't he have been threatening?
mustn't we have been threatening?
mustn't you have been threatening?
mustn't they have been threatening?