must drone
Verbe régulier : drone - droned- droned
Traduction française : bourdonner - ronronner 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must drone
you must drone
she must drone
we must drone
you must drone
they must drone 	I must be droning
you must be droning
she must be droning
we must be droning
you must be droning
they must be droning	I must have droned
you must have droned
she must have droned
we must have droned
you must have droned
they must have droned	I must have been droning
you must have been droning
she must have been droning
we must have been droning
you must have been droning
they must have been droning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't drone
you mustn't drone
she mustn't drone
we mustn't drone
you mustn't drone
they mustn't drone 	I mustn't be droning
you mustn't be droning
she mustn't be droning
we mustn't be droning
you mustn't be droning
they mustn't be droning	I mustn't have droned
you mustn't have droned
she mustn't have droned
we mustn't have droned
you mustn't have droned
they mustn't have droned	I mustn't have been droning
you mustn't have been droning
she mustn't have been droning
we mustn't have been droning
you mustn't have been droning
they mustn't have been droning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I drone?
must you drone?
must she drone?
must we drone?
must you drone?
must they drone? 	must I be droning?
must you be droning?
must she be droning?
must we be droning?
must you be droning?
must they be droning? 	must I have droned?
must you have droned?
must she have droned?
must we have droned?
must you have droned?
must they have droned? 	must I have been droning?
must you have been droning?
must she have been droning?
must we have been droning?
must you have been droning?
must they have been droning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I drone?
mustn't you drone?
mustn't she drone?
mustn't we drone?
mustn't you drone?
mustn't they drone? 	mustn't I be droning?
mustn't you be droning?
mustn't she be droning?
mustn't we be droning?
mustn't you be droning?
mustn't they be droning? 	mustn't I have droned?
mustn't you have droned?
mustn't she have droned?
mustn't we have droned?
mustn't you have droned?
mustn't they have droned? 	mustn't I have been droning?
mustn't you have been droning?
mustn't she have been droning?
mustn't we have been droning?
mustn't you have been droning?
mustn't they have been droning?