must pass
Verbo regular: pass - passed- passed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must pass
you must pass
he must pass
we must pass
you must pass
they must pass 	I must be passing
you must be passing
he must be passing
we must be passing
you must be passing
they must be passing	I must have passed
you must have passed
he must have passed
we must have passed
you must have passed
they must have passed	I must have been passing
you must have been passing
he must have been passing
we must have been passing
you must have been passing
they must have been passing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't pass
you mustn't pass
he mustn't pass
we mustn't pass
you mustn't pass
they mustn't pass 	I mustn't be passing
you mustn't be passing
he mustn't be passing
we mustn't be passing
you mustn't be passing
they mustn't be passing	I mustn't have passed
you mustn't have passed
he mustn't have passed
we mustn't have passed
you mustn't have passed
they mustn't have passed	I mustn't have been passing
you mustn't have been passing
he mustn't have been passing
we mustn't have been passing
you mustn't have been passing
they mustn't have been passing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I pass?
must you pass?
must he pass?
must we pass?
must you pass?
must they pass? 	must I be passing?
must you be passing?
must he be passing?
must we be passing?
must you be passing?
must they be passing? 	must I have passed?
must you have passed?
must he have passed?
must we have passed?
must you have passed?
must they have passed? 	must I have been passing?
must you have been passing?
must he have been passing?
must we have been passing?
must you have been passing?
must they have been passing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I pass?
mustn't you pass?
mustn't he pass?
mustn't we pass?
mustn't you pass?
mustn't they pass? 	mustn't I be passing?
mustn't you be passing?
mustn't he be passing?
mustn't we be passing?
mustn't you be passing?
mustn't they be passing? 	mustn't I have passed?
mustn't you have passed?
mustn't he have passed?
mustn't we have passed?
mustn't you have passed?
mustn't they have passed? 	mustn't I have been passing?
mustn't you have been passing?
mustn't he have been passing?
mustn't we have been passing?
mustn't you have been passing?
mustn't they have been passing?