must introduce
Verbo regular: introduce - introduced- introduced

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must introduce
you must introduce
he must introduce
we must introduce
you must introduce
they must introduce 	I must be introducing
you must be introducing
he must be introducing
we must be introducing
you must be introducing
they must be introducing	I must have introduced
you must have introduced
he must have introduced
we must have introduced
you must have introduced
they must have introduced	I must have been introducing
you must have been introducing
he must have been introducing
we must have been introducing
you must have been introducing
they must have been introducing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not introduce
you must not introduce
he must not introduce
we must not introduce
you must not introduce
they must not introduce 	I must not be introducing
you must not be introducing
he must not be introducing
we must not be introducing
you must not be introducing
they must not be introducing	I must not have introduced
you must not have introduced
he must not have introduced
we must not have introduced
you must not have introduced
they must not have introduced	I must not have been introducing
you must not have been introducing
he must not have been introducing
we must not have been introducing
you must not have been introducing
they must not have been introducing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I introduce?
must you introduce?
must he introduce?
must we introduce?
must you introduce?
must they introduce? 	must I be introducing?
must you be introducing?
must he be introducing?
must we be introducing?
must you be introducing?
must they be introducing? 	must I have introduced?
must you have introduced?
must he have introduced?
must we have introduced?
must you have introduced?
must they have introduced? 	must I have been introducing?
must you have been introducing?
must he have been introducing?
must we have been introducing?
must you have been introducing?
must they have been introducing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not introduce?
must you not introduce?
must he not introduce?
must we not introduce?
must you not introduce?
must they not introduce? 	must I not be introducing?
must you not be introducing?
must he not be introducing?
must we not be introducing?
must you not be introducing?
must they not be introducing? 	must I not have introduced?
must you not have introduced?
must he not have introduced?
must we not have introduced?
must you not have introduced?
must they not have introduced? 	must I not have been introducing?
must you not have been introducing?
must he not have been introducing?
must we not have been introducing?
must you not have been introducing?
must they not have been introducing?