must underwork
Verbo regular: underwork - underworked- underworked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must underwork
you must underwork
he must underwork
we must underwork
you must underwork
they must underwork 	I must be underworking
you must be underworking
he must be underworking
we must be underworking
you must be underworking
they must be underworking	I must have underworked
you must have underworked
he must have underworked
we must have underworked
you must have underworked
they must have underworked	I must have been underworking
you must have been underworking
he must have been underworking
we must have been underworking
you must have been underworking
they must have been underworking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't underwork
you mustn't underwork
he mustn't underwork
we mustn't underwork
you mustn't underwork
they mustn't underwork 	I mustn't be underworking
you mustn't be underworking
he mustn't be underworking
we mustn't be underworking
you mustn't be underworking
they mustn't be underworking	I mustn't have underworked
you mustn't have underworked
he mustn't have underworked
we mustn't have underworked
you mustn't have underworked
they mustn't have underworked	I mustn't have been underworking
you mustn't have been underworking
he mustn't have been underworking
we mustn't have been underworking
you mustn't have been underworking
they mustn't have been underworking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I underwork?
must you underwork?
must he underwork?
must we underwork?
must you underwork?
must they underwork? 	must I be underworking?
must you be underworking?
must he be underworking?
must we be underworking?
must you be underworking?
must they be underworking? 	must I have underworked?
must you have underworked?
must he have underworked?
must we have underworked?
must you have underworked?
must they have underworked? 	must I have been underworking?
must you have been underworking?
must he have been underworking?
must we have been underworking?
must you have been underworking?
must they have been underworking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I underwork?
mustn't you underwork?
mustn't he underwork?
mustn't we underwork?
mustn't you underwork?
mustn't they underwork? 	mustn't I be underworking?
mustn't you be underworking?
mustn't he be underworking?
mustn't we be underworking?
mustn't you be underworking?
mustn't they be underworking? 	mustn't I have underworked?
mustn't you have underworked?
mustn't he have underworked?
mustn't we have underworked?
mustn't you have underworked?
mustn't they have underworked? 	mustn't I have been underworking?
mustn't you have been underworking?
mustn't he have been underworking?
mustn't we have been underworking?
mustn't you have been underworking?
mustn't they have been underworking?