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 must not excuse
you must not excuse
he must not excuse
we must not excuse
you must not excuse
they must not excuse 	I must not be excusing
you must not be excusing
he must not be excusing
we must not be excusing
you must not be excusing
they must not be excusing	I must not have excused
you must not have excused
he must not have excused
we must not have excused
you must not have excused
they must not have excused	I must not have been excusing
you must not have been excusing
he must not have been excusing
we must not have been excusing
you must not have been excusing
they must not 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 	
must I not excuse?
must you not excuse?
must he not excuse?
must we not excuse?
must you not excuse?
must they not excuse? 	must I not be excusing?
must you not be excusing?
must he not be excusing?
must we not be excusing?
must you not be excusing?
must they not be excusing? 	must I not have excused?
must you not have excused?
must he not have excused?
must we not have excused?
must you not have excused?
must they not have excused? 	must I not have been excusing?
must you not have been excusing?
must he not have been excusing?
must we not have been excusing?
must you not have been excusing?
must they not have been excusing?