must introduce
Verbe régulier : introduce - introduced- introduced
Traduction française : présenter - introduire 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must introduce
you must introduce
she must introduce
we must introduce
you must introduce
they must introduce 	I must be introducing
you must be introducing
she must be introducing
we must be introducing
you must be introducing
they must be introducing	I must have introduced
you must have introduced
she 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
she must have been introducing
we must have been introducing
you must have been introducing
they must have been introducing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't introduce
you mustn't introduce
she mustn't introduce
we mustn't introduce
you mustn't introduce
they mustn't introduce 	I mustn't be introducing
you mustn't be introducing
she mustn't be introducing
we mustn't be introducing
you mustn't be introducing
they mustn't be introducing	I mustn't have introduced
you mustn't have introduced
she mustn't have introduced
we mustn't have introduced
you mustn't have introduced
they mustn't have introduced	I mustn't have been introducing
you mustn't have been introducing
she mustn't have been introducing
we mustn't have been introducing
you mustn't have been introducing
they mustn't have been introducing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I introduce?
must you introduce?
must she introduce?
must we introduce?
must you introduce?
must they introduce? 	must I be introducing?
must you be introducing?
must she be introducing?
must we be introducing?
must you be introducing?
must they be introducing? 	must I have introduced?
must you have introduced?
must she 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 she have been introducing?
must we have been introducing?
must you have been introducing?
must they have been introducing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I introduce?
mustn't you introduce?
mustn't she introduce?
mustn't we introduce?
mustn't you introduce?
mustn't they introduce? 	mustn't I be introducing?
mustn't you be introducing?
mustn't she be introducing?
mustn't we be introducing?
mustn't you be introducing?
mustn't they be introducing? 	mustn't I have introduced?
mustn't you have introduced?
mustn't she have introduced?
mustn't we have introduced?
mustn't you have introduced?
mustn't they have introduced? 	mustn't I have been introducing?
mustn't you have been introducing?
mustn't she have been introducing?
mustn't we have been introducing?
mustn't you have been introducing?
mustn't they have been introducing?