must simmer
Verbo regular: simmer - simmered- simmered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must simmer
you must simmer
he must simmer
we must simmer
you must simmer
they must simmer 	I must be simmering
you must be simmering
he must be simmering
we must be simmering
you must be simmering
they must be simmering	I must have simmered
you must have simmered
he must have simmered
we must have simmered
you must have simmered
they must have simmered	I must have been simmering
you must have been simmering
he must have been simmering
we must have been simmering
you must have been simmering
they must have been simmering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't simmer
you mustn't simmer
he mustn't simmer
we mustn't simmer
you mustn't simmer
they mustn't simmer 	I mustn't be simmering
you mustn't be simmering
he mustn't be simmering
we mustn't be simmering
you mustn't be simmering
they mustn't be simmering	I mustn't have simmered
you mustn't have simmered
he mustn't have simmered
we mustn't have simmered
you mustn't have simmered
they mustn't have simmered	I mustn't have been simmering
you mustn't have been simmering
he mustn't have been simmering
we mustn't have been simmering
you mustn't have been simmering
they mustn't have been simmering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I simmer?
must you simmer?
must he simmer?
must we simmer?
must you simmer?
must they simmer? 	must I be simmering?
must you be simmering?
must he be simmering?
must we be simmering?
must you be simmering?
must they be simmering? 	must I have simmered?
must you have simmered?
must he have simmered?
must we have simmered?
must you have simmered?
must they have simmered? 	must I have been simmering?
must you have been simmering?
must he have been simmering?
must we have been simmering?
must you have been simmering?
must they have been simmering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I simmer?
mustn't you simmer?
mustn't he simmer?
mustn't we simmer?
mustn't you simmer?
mustn't they simmer? 	mustn't I be simmering?
mustn't you be simmering?
mustn't he be simmering?
mustn't we be simmering?
mustn't you be simmering?
mustn't they be simmering? 	mustn't I have simmered?
mustn't you have simmered?
mustn't he have simmered?
mustn't we have simmered?
mustn't you have simmered?
mustn't they have simmered? 	mustn't I have been simmering?
mustn't you have been simmering?
mustn't he have been simmering?
mustn't we have been simmering?
mustn't you have been simmering?
mustn't they have been simmering?