must excuse
Verbo regular: excuse - excused- excused

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must excuse
you must excuse
he must excuse
we must excuse
you must excuse
they must excuse 	I must be excusing
you must be excusing
he must be excusing
we must be excusing
you must be excusing
they must be excusing	I must have excused
you must have excused
he must have excused
we must have excused
you must have excused
they must have excused	I must have been excusing
you must have been excusing
he must have been excusing
we must have been excusing
you must have been excusing
they must have been excusing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't excuse
you mustn't excuse
he mustn't excuse
we mustn't excuse
you mustn't excuse
they mustn't excuse 	I mustn't be excusing
you mustn't be excusing
he mustn't be excusing
we mustn't be excusing
you mustn't be excusing
they mustn't be excusing	I mustn't have excused
you mustn't have excused
he mustn't have excused
we mustn't have excused
you mustn't have excused
they mustn't have excused	I mustn't have been excusing
you mustn't have been excusing
he mustn't have been excusing
we mustn't have been excusing
you mustn't have been excusing
they mustn't have been excusing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I excuse?
must you excuse?
must he excuse?
must we excuse?
must you excuse?
must they excuse? 	must I be excusing?
must you be excusing?
must he be excusing?
must we be excusing?
must you be excusing?
must they be excusing? 	must I have excused?
must you have excused?
must he have excused?
must we have excused?
must you have excused?
must they have excused? 	must I have been excusing?
must you have been excusing?
must he have been excusing?
must we have been excusing?
must you have been excusing?
must they have been excusing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I excuse?
mustn't you excuse?
mustn't he excuse?
mustn't we excuse?
mustn't you excuse?
mustn't they excuse? 	mustn't I be excusing?
mustn't you be excusing?
mustn't he be excusing?
mustn't we be excusing?
mustn't you be excusing?
mustn't they be excusing? 	mustn't I have excused?
mustn't you have excused?
mustn't he have excused?
mustn't we have excused?
mustn't you have excused?
mustn't they have excused? 	mustn't I have been excusing?
mustn't you have been excusing?
mustn't he have been excusing?
mustn't we have been excusing?
mustn't you have been excusing?
mustn't they have been excusing?