must excel
Verbo regular: excel - excelled- excelled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must excel
you must excel
he must excel
we must excel
you must excel
they must excel 	I must be excelling
you must be excelling
he must be excelling
we must be excelling
you must be excelling
they must be excelling	I must have excelled
you must have excelled
he must have excelled
we must have excelled
you must have excelled
they must have excelled	I must have been excelling
you must have been excelling
he must have been excelling
we must have been excelling
you must have been excelling
they must have been excelling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't excel
you mustn't excel
he mustn't excel
we mustn't excel
you mustn't excel
they mustn't excel 	I mustn't be excelling
you mustn't be excelling
he mustn't be excelling
we mustn't be excelling
you mustn't be excelling
they mustn't be excelling	I mustn't have excelled
you mustn't have excelled
he mustn't have excelled
we mustn't have excelled
you mustn't have excelled
they mustn't have excelled	I mustn't have been excelling
you mustn't have been excelling
he mustn't have been excelling
we mustn't have been excelling
you mustn't have been excelling
they mustn't have been excelling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I excel?
must you excel?
must he excel?
must we excel?
must you excel?
must they excel? 	must I be excelling?
must you be excelling?
must he be excelling?
must we be excelling?
must you be excelling?
must they be excelling? 	must I have excelled?
must you have excelled?
must he have excelled?
must we have excelled?
must you have excelled?
must they have excelled? 	must I have been excelling?
must you have been excelling?
must he have been excelling?
must we have been excelling?
must you have been excelling?
must they have been excelling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I excel?
mustn't you excel?
mustn't he excel?
mustn't we excel?
mustn't you excel?
mustn't they excel? 	mustn't I be excelling?
mustn't you be excelling?
mustn't he be excelling?
mustn't we be excelling?
mustn't you be excelling?
mustn't they be excelling? 	mustn't I have excelled?
mustn't you have excelled?
mustn't he have excelled?
mustn't we have excelled?
mustn't you have excelled?
mustn't they have excelled? 	mustn't I have been excelling?
mustn't you have been excelling?
mustn't he have been excelling?
mustn't we have been excelling?
mustn't you have been excelling?
mustn't they have been excelling?