must add
Verbo regular: add - added- added

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must add
you must add
he must add
we must add
you must add
they must add 	I must be adding
you must be adding
he must be adding
we must be adding
you must be adding
they must be adding	I must have added
you must have added
he must have added
we must have added
you must have added
they must have added	I must have been adding
you must have been adding
he must have been adding
we must have been adding
you must have been adding
they must have been adding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not add
you must not add
he must not add
we must not add
you must not add
they must not add 	I must not be adding
you must not be adding
he must not be adding
we must not be adding
you must not be adding
they must not be adding	I must not have added
you must not have added
he must not have added
we must not have added
you must not have added
they must not have added	I must not have been adding
you must not have been adding
he must not have been adding
we must not have been adding
you must not have been adding
they must not have been adding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I add?
must you add?
must he add?
must we add?
must you add?
must they add? 	must I be adding?
must you be adding?
must he be adding?
must we be adding?
must you be adding?
must they be adding? 	must I have added?
must you have added?
must he have added?
must we have added?
must you have added?
must they have added? 	must I have been adding?
must you have been adding?
must he have been adding?
must we have been adding?
must you have been adding?
must they have been adding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not add?
must you not add?
must he not add?
must we not add?
must you not add?
must they not add? 	must I not be adding?
must you not be adding?
must he not be adding?
must we not be adding?
must you not be adding?
must they not be adding? 	must I not have added?
must you not have added?
must he not have added?
must we not have added?
must you not have added?
must they not have added? 	must I not have been adding?
must you not have been adding?
must he not have been adding?
must we not have been adding?
must you not have been adding?
must they not have been adding?