must remain
Verbo regular: remain - remained- remained

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must remain
you must remain
he must remain
we must remain
you must remain
they must remain 	I must be remaining
you must be remaining
he must be remaining
we must be remaining
you must be remaining
they must be remaining	I must have remained
you must have remained
he must have remained
we must have remained
you must have remained
they must have remained	I must have been remaining
you must have been remaining
he must have been remaining
we must have been remaining
you must have been remaining
they must have been remaining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not remain
you must not remain
he must not remain
we must not remain
you must not remain
they must not remain 	I must not be remaining
you must not be remaining
he must not be remaining
we must not be remaining
you must not be remaining
they must not be remaining	I must not have remained
you must not have remained
he must not have remained
we must not have remained
you must not have remained
they must not have remained	I must not have been remaining
you must not have been remaining
he must not have been remaining
we must not have been remaining
you must not have been remaining
they must not have been remaining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I remain?
must you remain?
must he remain?
must we remain?
must you remain?
must they remain? 	must I be remaining?
must you be remaining?
must he be remaining?
must we be remaining?
must you be remaining?
must they be remaining? 	must I have remained?
must you have remained?
must he have remained?
must we have remained?
must you have remained?
must they have remained? 	must I have been remaining?
must you have been remaining?
must he have been remaining?
must we have been remaining?
must you have been remaining?
must they have been remaining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not remain?
must you not remain?
must he not remain?
must we not remain?
must you not remain?
must they not remain? 	must I not be remaining?
must you not be remaining?
must he not be remaining?
must we not be remaining?
must you not be remaining?
must they not be remaining? 	must I not have remained?
must you not have remained?
must he not have remained?
must we not have remained?
must you not have remained?
must they not have remained? 	must I not have been remaining?
must you not have been remaining?
must he not have been remaining?
must we not have been remaining?
must you not have been remaining?
must they not have been remaining?