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 must not warn
you must not warn
he must not warn
we must not warn
you must not warn
they must not warn 	I must not be warning
you must not be warning
he must not be warning
we must not be warning
you must not be warning
they must not be warning	I must not have warned
you must not have warned
he must not have warned
we must not have warned
you must not have warned
they must not have warned	I must not have been warning
you must not have been warning
he must not have been warning
we must not have been warning
you must not have been warning
they must not 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 	
must I not warn?
must you not warn?
must he not warn?
must we not warn?
must you not warn?
must they not warn? 	must I not be warning?
must you not be warning?
must he not be warning?
must we not be warning?
must you not be warning?
must they not be warning? 	must I not have warned?
must you not have warned?
must he not have warned?
must we not have warned?
must you not have warned?
must they not have warned? 	must I not have been warning?
must you not have been warning?
must he not have been warning?
must we not have been warning?
must you not have been warning?
must they not have been warning?