must use
Verbo regolare: use - used- used

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must use
you must use
he must use
we must use
you must use
they must use 	I must be using
you must be using
he must be using
we must be using
you must be using
they must be using	I must have used
you must have used
he must have used
we must have used
you must have used
they must have used	I must have been using
you must have been using
he must have been using
we must have been using
you must have been using
they must have been using	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't use
you mustn't use
he mustn't use
we mustn't use
you mustn't use
they mustn't use 	I mustn't be using
you mustn't be using
he mustn't be using
we mustn't be using
you mustn't be using
they mustn't be using	I mustn't have used
you mustn't have used
he mustn't have used
we mustn't have used
you mustn't have used
they mustn't have used	I mustn't have been using
you mustn't have been using
he mustn't have been using
we mustn't have been using
you mustn't have been using
they mustn't have been using	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I use?
must you use?
must he use?
must we use?
must you use?
must they use? 	must I be using?
must you be using?
must he be using?
must we be using?
must you be using?
must they be using? 	must I have used?
must you have used?
must he have used?
must we have used?
must you have used?
must they have used? 	must I have been using?
must you have been using?
must he have been using?
must we have been using?
must you have been using?
must they have been using? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I use?
mustn't you use?
mustn't he use?
mustn't we use?
mustn't you use?
mustn't they use? 	mustn't I be using?
mustn't you be using?
mustn't he be using?
mustn't we be using?
mustn't you be using?
mustn't they be using? 	mustn't I have used?
mustn't you have used?
mustn't he have used?
mustn't we have used?
mustn't you have used?
mustn't they have used? 	mustn't I have been using?
mustn't you have been using?
mustn't he have been using?
mustn't we have been using?
mustn't you have been using?
mustn't they have been using?