must cheer
Verbo regular: cheer - cheered- cheered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must cheer
you must cheer
he must cheer
we must cheer
you must cheer
they must cheer 	I must be cheering
you must be cheering
he must be cheering
we must be cheering
you must be cheering
they must be cheering	I must have cheered
you must have cheered
he must have cheered
we must have cheered
you must have cheered
they must have cheered	I must have been cheering
you must have been cheering
he must have been cheering
we must have been cheering
you must have been cheering
they must have been cheering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't cheer
you mustn't cheer
he mustn't cheer
we mustn't cheer
you mustn't cheer
they mustn't cheer 	I mustn't be cheering
you mustn't be cheering
he mustn't be cheering
we mustn't be cheering
you mustn't be cheering
they mustn't be cheering	I mustn't have cheered
you mustn't have cheered
he mustn't have cheered
we mustn't have cheered
you mustn't have cheered
they mustn't have cheered	I mustn't have been cheering
you mustn't have been cheering
he mustn't have been cheering
we mustn't have been cheering
you mustn't have been cheering
they mustn't have been cheering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I cheer?
must you cheer?
must he cheer?
must we cheer?
must you cheer?
must they cheer? 	must I be cheering?
must you be cheering?
must he be cheering?
must we be cheering?
must you be cheering?
must they be cheering? 	must I have cheered?
must you have cheered?
must he have cheered?
must we have cheered?
must you have cheered?
must they have cheered? 	must I have been cheering?
must you have been cheering?
must he have been cheering?
must we have been cheering?
must you have been cheering?
must they have been cheering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I cheer?
mustn't you cheer?
mustn't he cheer?
mustn't we cheer?
mustn't you cheer?
mustn't they cheer? 	mustn't I be cheering?
mustn't you be cheering?
mustn't he be cheering?
mustn't we be cheering?
mustn't you be cheering?
mustn't they be cheering? 	mustn't I have cheered?
mustn't you have cheered?
mustn't he have cheered?
mustn't we have cheered?
mustn't you have cheered?
mustn't they have cheered? 	mustn't I have been cheering?
mustn't you have been cheering?
mustn't he have been cheering?
mustn't we have been cheering?
mustn't you have been cheering?
mustn't they have been cheering?