must rumble
Verbe régulier : rumble - rumbled- rumbled
Traduction française : gronder - découvrir 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must rumble
you must rumble
he must rumble
we must rumble
you must rumble
they must rumble 	I must be rumbling
you must be rumbling
he must be rumbling
we must be rumbling
you must be rumbling
they must be rumbling	I must have rumbled
you must have rumbled
he must have rumbled
we must have rumbled
you must have rumbled
they must have rumbled	I must have been rumbling
you must have been rumbling
he must have been rumbling
we must have been rumbling
you must have been rumbling
they must have been rumbling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't rumble
you mustn't rumble
he mustn't rumble
we mustn't rumble
you mustn't rumble
they mustn't rumble 	I mustn't be rumbling
you mustn't be rumbling
he mustn't be rumbling
we mustn't be rumbling
you mustn't be rumbling
they mustn't be rumbling	I mustn't have rumbled
you mustn't have rumbled
he mustn't have rumbled
we mustn't have rumbled
you mustn't have rumbled
they mustn't have rumbled	I mustn't have been rumbling
you mustn't have been rumbling
he mustn't have been rumbling
we mustn't have been rumbling
you mustn't have been rumbling
they mustn't have been rumbling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I rumble?
must you rumble?
must he rumble?
must we rumble?
must you rumble?
must they rumble? 	must I be rumbling?
must you be rumbling?
must he be rumbling?
must we be rumbling?
must you be rumbling?
must they be rumbling? 	must I have rumbled?
must you have rumbled?
must he have rumbled?
must we have rumbled?
must you have rumbled?
must they have rumbled? 	must I have been rumbling?
must you have been rumbling?
must he have been rumbling?
must we have been rumbling?
must you have been rumbling?
must they have been rumbling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I rumble?
mustn't you rumble?
mustn't he rumble?
mustn't we rumble?
mustn't you rumble?
mustn't they rumble? 	mustn't I be rumbling?
mustn't you be rumbling?
mustn't he be rumbling?
mustn't we be rumbling?
mustn't you be rumbling?
mustn't they be rumbling? 	mustn't I have rumbled?
mustn't you have rumbled?
mustn't he have rumbled?
mustn't we have rumbled?
mustn't you have rumbled?
mustn't they have rumbled? 	mustn't I have been rumbling?
mustn't you have been rumbling?
mustn't he have been rumbling?
mustn't we have been rumbling?
mustn't you have been rumbling?
mustn't they have been rumbling?