must model
Verbo regular: model - modelled- modelled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must model
you must model
she must model
we must model
you must model
they must model 	I must be modelling
you must be modelling
she must be modelling
we must be modelling
you must be modelling
they must be modelling	I must have modelled
you must have modelled
she must have modelled
we must have modelled
you must have modelled
they must have modelled	I must have been modelling
you must have been modelling
she must have been modelling
we must have been modelling
you must have been modelling
they must have been modelling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not model
you must not model
she must not model
we must not model
you must not model
they must not model 	I must not be modelling
you must not be modelling
she must not be modelling
we must not be modelling
you must not be modelling
they must not be modelling	I must not have modelled
you must not have modelled
she must not have modelled
we must not have modelled
you must not have modelled
they must not have modelled	I must not have been modelling
you must not have been modelling
she must not have been modelling
we must not have been modelling
you must not have been modelling
they must not have been modelling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I model?
must you model?
must she model?
must we model?
must you model?
must they model? 	must I be modelling?
must you be modelling?
must she be modelling?
must we be modelling?
must you be modelling?
must they be modelling? 	must I have modelled?
must you have modelled?
must she have modelled?
must we have modelled?
must you have modelled?
must they have modelled? 	must I have been modelling?
must you have been modelling?
must she have been modelling?
must we have been modelling?
must you have been modelling?
must they have been modelling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not model?
must you not model?
must she not model?
must we not model?
must you not model?
must they not model? 	must I not be modelling?
must you not be modelling?
must she not be modelling?
must we not be modelling?
must you not be modelling?
must they not be modelling? 	must I not have modelled?
must you not have modelled?
must she not have modelled?
must we not have modelled?
must you not have modelled?
must they not have modelled? 	must I not have been modelling?
must you not have been modelling?
must she not have been modelling?
must we not have been modelling?
must you not have been modelling?
must they not have been modelling?