must bark
Verbo regular: bark - barked- barked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must bark
you must bark
he must bark
we must bark
you must bark
they must bark 	I must be barking
you must be barking
he must be barking
we must be barking
you must be barking
they must be barking	I must have barked
you must have barked
he must have barked
we must have barked
you must have barked
they must have barked	I must have been barking
you must have been barking
he must have been barking
we must have been barking
you must have been barking
they must have been barking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not bark
you must not bark
he must not bark
we must not bark
you must not bark
they must not bark 	I must not be barking
you must not be barking
he must not be barking
we must not be barking
you must not be barking
they must not be barking	I must not have barked
you must not have barked
he must not have barked
we must not have barked
you must not have barked
they must not have barked	I must not have been barking
you must not have been barking
he must not have been barking
we must not have been barking
you must not have been barking
they must not have been barking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I bark?
must you bark?
must he bark?
must we bark?
must you bark?
must they bark? 	must I be barking?
must you be barking?
must he be barking?
must we be barking?
must you be barking?
must they be barking? 	must I have barked?
must you have barked?
must he have barked?
must we have barked?
must you have barked?
must they have barked? 	must I have been barking?
must you have been barking?
must he have been barking?
must we have been barking?
must you have been barking?
must they have been barking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not bark?
must you not bark?
must he not bark?
must we not bark?
must you not bark?
must they not bark? 	must I not be barking?
must you not be barking?
must he not be barking?
must we not be barking?
must you not be barking?
must they not be barking? 	must I not have barked?
must you not have barked?
must he not have barked?
must we not have barked?
must you not have barked?
must they not have barked? 	must I not have been barking?
must you not have been barking?
must he not have been barking?
must we not have been barking?
must you not have been barking?
must they not have been barking?