must sleep
Verbo irregolare: sleep - slept- slept

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must sleep
you must sleep
he must sleep
we must sleep
you must sleep
they must sleep 	I must be sleeping
you must be sleeping
he must be sleeping
we must be sleeping
you must be sleeping
they must be sleeping	I must have slept
you must have slept
he must have slept
we must have slept
you must have slept
they must have slept	I must have been sleeping
you must have been sleeping
he must have been sleeping
we must have been sleeping
you must have been sleeping
they must have been sleeping	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't sleep
you mustn't sleep
he mustn't sleep
we mustn't sleep
you mustn't sleep
they mustn't sleep 	I mustn't be sleeping
you mustn't be sleeping
he mustn't be sleeping
we mustn't be sleeping
you mustn't be sleeping
they mustn't be sleeping	I mustn't have slept
you mustn't have slept
he mustn't have slept
we mustn't have slept
you mustn't have slept
they mustn't have slept	I mustn't have been sleeping
you mustn't have been sleeping
he mustn't have been sleeping
we mustn't have been sleeping
you mustn't have been sleeping
they mustn't have been sleeping	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I sleep?
must you sleep?
must he sleep?
must we sleep?
must you sleep?
must they sleep? 	must I be sleeping?
must you be sleeping?
must he be sleeping?
must we be sleeping?
must you be sleeping?
must they be sleeping? 	must I have slept?
must you have slept?
must he have slept?
must we have slept?
must you have slept?
must they have slept? 	must I have been sleeping?
must you have been sleeping?
must he have been sleeping?
must we have been sleeping?
must you have been sleeping?
must they have been sleeping? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I sleep?
mustn't you sleep?
mustn't he sleep?
mustn't we sleep?
mustn't you sleep?
mustn't they sleep? 	mustn't I be sleeping?
mustn't you be sleeping?
mustn't he be sleeping?
mustn't we be sleeping?
mustn't you be sleeping?
mustn't they be sleeping? 	mustn't I have slept?
mustn't you have slept?
mustn't he have slept?
mustn't we have slept?
mustn't you have slept?
mustn't they have slept? 	mustn't I have been sleeping?
mustn't you have been sleeping?
mustn't he have been sleeping?
mustn't we have been sleeping?
mustn't you have been sleeping?
mustn't they have been sleeping?