must shadow
Verbo regular: shadow - shadowed- shadowed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must shadow
you must shadow
he must shadow
we must shadow
you must shadow
they must shadow 	I must be shadowing
you must be shadowing
he must be shadowing
we must be shadowing
you must be shadowing
they must be shadowing	I must have shadowed
you must have shadowed
he must have shadowed
we must have shadowed
you must have shadowed
they must have shadowed	I must have been shadowing
you must have been shadowing
he must have been shadowing
we must have been shadowing
you must have been shadowing
they must have been shadowing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't shadow
you mustn't shadow
he mustn't shadow
we mustn't shadow
you mustn't shadow
they mustn't shadow 	I mustn't be shadowing
you mustn't be shadowing
he mustn't be shadowing
we mustn't be shadowing
you mustn't be shadowing
they mustn't be shadowing	I mustn't have shadowed
you mustn't have shadowed
he mustn't have shadowed
we mustn't have shadowed
you mustn't have shadowed
they mustn't have shadowed	I mustn't have been shadowing
you mustn't have been shadowing
he mustn't have been shadowing
we mustn't have been shadowing
you mustn't have been shadowing
they mustn't have been shadowing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I shadow?
must you shadow?
must he shadow?
must we shadow?
must you shadow?
must they shadow? 	must I be shadowing?
must you be shadowing?
must he be shadowing?
must we be shadowing?
must you be shadowing?
must they be shadowing? 	must I have shadowed?
must you have shadowed?
must he have shadowed?
must we have shadowed?
must you have shadowed?
must they have shadowed? 	must I have been shadowing?
must you have been shadowing?
must he have been shadowing?
must we have been shadowing?
must you have been shadowing?
must they have been shadowing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I shadow?
mustn't you shadow?
mustn't he shadow?
mustn't we shadow?
mustn't you shadow?
mustn't they shadow? 	mustn't I be shadowing?
mustn't you be shadowing?
mustn't he be shadowing?
mustn't we be shadowing?
mustn't you be shadowing?
mustn't they be shadowing? 	mustn't I have shadowed?
mustn't you have shadowed?
mustn't he have shadowed?
mustn't we have shadowed?
mustn't you have shadowed?
mustn't they have shadowed? 	mustn't I have been shadowing?
mustn't you have been shadowing?
mustn't he have been shadowing?
mustn't we have been shadowing?
mustn't you have been shadowing?
mustn't they have been shadowing?