must perform
Verbo regolare: perform - performed- performed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must perform
you must perform
he must perform
we must perform
you must perform
they must perform 	I must be performing
you must be performing
he must be performing
we must be performing
you must be performing
they must be performing	I must have performed
you must have performed
he must have performed
we must have performed
you must have performed
they must have performed	I must have been performing
you must have been performing
he must have been performing
we must have been performing
you must have been performing
they must have been performing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't perform
you mustn't perform
he mustn't perform
we mustn't perform
you mustn't perform
they mustn't perform 	I mustn't be performing
you mustn't be performing
he mustn't be performing
we mustn't be performing
you mustn't be performing
they mustn't be performing	I mustn't have performed
you mustn't have performed
he mustn't have performed
we mustn't have performed
you mustn't have performed
they mustn't have performed	I mustn't have been performing
you mustn't have been performing
he mustn't have been performing
we mustn't have been performing
you mustn't have been performing
they mustn't have been performing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I perform?
must you perform?
must he perform?
must we perform?
must you perform?
must they perform? 	must I be performing?
must you be performing?
must he be performing?
must we be performing?
must you be performing?
must they be performing? 	must I have performed?
must you have performed?
must he have performed?
must we have performed?
must you have performed?
must they have performed? 	must I have been performing?
must you have been performing?
must he have been performing?
must we have been performing?
must you have been performing?
must they have been performing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I perform?
mustn't you perform?
mustn't he perform?
mustn't we perform?
mustn't you perform?
mustn't they perform? 	mustn't I be performing?
mustn't you be performing?
mustn't he be performing?
mustn't we be performing?
mustn't you be performing?
mustn't they be performing? 	mustn't I have performed?
mustn't you have performed?
mustn't he have performed?
mustn't we have performed?
mustn't you have performed?
mustn't they have performed? 	mustn't I have been performing?
mustn't you have been performing?
mustn't he have been performing?
mustn't we have been performing?
mustn't you have been performing?
mustn't they have been performing?