must warn
Verbe régulier : warn - warned- warned
Traduction française : avertir - conseiller 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must warn
you must warn
he must warn
we must warn
you must warn
they must warn 	I must be warning
you must be warning
he must be warning
we must be warning
you must be warning
they must be warning	I must have warned
you must have warned
he must have warned
we must have warned
you must have warned
they must have warned	I must have been warning
you must have been warning
he must have been warning
we must have been warning
you must have been warning
they must have been warning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't warn
you mustn't warn
he mustn't warn
we mustn't warn
you mustn't warn
they mustn't warn 	I mustn't be warning
you mustn't be warning
he mustn't be warning
we mustn't be warning
you mustn't be warning
they mustn't be warning	I mustn't have warned
you mustn't have warned
he mustn't have warned
we mustn't have warned
you mustn't have warned
they mustn't have warned	I mustn't have been warning
you mustn't have been warning
he mustn't have been warning
we mustn't have been warning
you mustn't have been warning
they mustn't have been warning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I warn?
must you warn?
must he warn?
must we warn?
must you warn?
must they warn? 	must I be warning?
must you be warning?
must he be warning?
must we be warning?
must you be warning?
must they be warning? 	must I have warned?
must you have warned?
must he have warned?
must we have warned?
must you have warned?
must they have warned? 	must I have been warning?
must you have been warning?
must he have been warning?
must we have been warning?
must you have been warning?
must they have been warning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I warn?
mustn't you warn?
mustn't he warn?
mustn't we warn?
mustn't you warn?
mustn't they warn? 	mustn't I be warning?
mustn't you be warning?
mustn't he be warning?
mustn't we be warning?
mustn't you be warning?
mustn't they be warning? 	mustn't I have warned?
mustn't you have warned?
mustn't he have warned?
mustn't we have warned?
mustn't you have warned?
mustn't they have warned? 	mustn't I have been warning?
mustn't you have been warning?
mustn't he have been warning?
mustn't we have been warning?
mustn't you have been warning?
mustn't they have been warning?