must do
Verbo irregolare: do - did- done

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must do
you must do
he must do
we must do
you must do
they must do 	I must be doing
you must be doing
he must be doing
we must be doing
you must be doing
they must be doing	I must have done
you must have done
he must have done
we must have done
you must have done
they must have done	I must have been doing
you must have been doing
he must have been doing
we must have been doing
you must have been doing
they must have been doing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't do
you mustn't do
he mustn't do
we mustn't do
you mustn't do
they mustn't do 	I mustn't be doing
you mustn't be doing
he mustn't be doing
we mustn't be doing
you mustn't be doing
they mustn't be doing	I mustn't have done
you mustn't have done
he mustn't have done
we mustn't have done
you mustn't have done
they mustn't have done	I mustn't have been doing
you mustn't have been doing
he mustn't have been doing
we mustn't have been doing
you mustn't have been doing
they mustn't have been doing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I do?
must you do?
must he do?
must we do?
must you do?
must they do? 	must I be doing?
must you be doing?
must he be doing?
must we be doing?
must you be doing?
must they be doing? 	must I have done?
must you have done?
must he have done?
must we have done?
must you have done?
must they have done? 	must I have been doing?
must you have been doing?
must he have been doing?
must we have been doing?
must you have been doing?
must they have been doing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I do?
mustn't you do?
mustn't he do?
mustn't we do?
mustn't you do?
mustn't they do? 	mustn't I be doing?
mustn't you be doing?
mustn't he be doing?
mustn't we be doing?
mustn't you be doing?
mustn't they be doing? 	mustn't I have done?
mustn't you have done?
mustn't he have done?
mustn't we have done?
mustn't you have done?
mustn't they have done? 	mustn't I have been doing?
mustn't you have been doing?
mustn't he have been doing?
mustn't we have been doing?
mustn't you have been doing?
mustn't they have been doing?