must thrum
Verbe régulier : thrum - thrumed- thrumed
Traduction française : vibrer - vrombir 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must thrum
you must thrum
she must thrum
we must thrum
you must thrum
they must thrum 	I must be thruming
you must be thruming
she must be thruming
we must be thruming
you must be thruming
they must be thruming	I must have thrumed
you must have thrumed
she must have thrumed
we must have thrumed
you must have thrumed
they must have thrumed	I must have been thruming
you must have been thruming
she must have been thruming
we must have been thruming
you must have been thruming
they must have been thruming	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't thrum
you mustn't thrum
she mustn't thrum
we mustn't thrum
you mustn't thrum
they mustn't thrum 	I mustn't be thruming
you mustn't be thruming
she mustn't be thruming
we mustn't be thruming
you mustn't be thruming
they mustn't be thruming	I mustn't have thrumed
you mustn't have thrumed
she mustn't have thrumed
we mustn't have thrumed
you mustn't have thrumed
they mustn't have thrumed	I mustn't have been thruming
you mustn't have been thruming
she mustn't have been thruming
we mustn't have been thruming
you mustn't have been thruming
they mustn't have been thruming	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I thrum?
must you thrum?
must she thrum?
must we thrum?
must you thrum?
must they thrum? 	must I be thruming?
must you be thruming?
must she be thruming?
must we be thruming?
must you be thruming?
must they be thruming? 	must I have thrumed?
must you have thrumed?
must she have thrumed?
must we have thrumed?
must you have thrumed?
must they have thrumed? 	must I have been thruming?
must you have been thruming?
must she have been thruming?
must we have been thruming?
must you have been thruming?
must they have been thruming? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I thrum?
mustn't you thrum?
mustn't she thrum?
mustn't we thrum?
mustn't you thrum?
mustn't they thrum? 	mustn't I be thruming?
mustn't you be thruming?
mustn't she be thruming?
mustn't we be thruming?
mustn't you be thruming?
mustn't they be thruming? 	mustn't I have thrumed?
mustn't you have thrumed?
mustn't she have thrumed?
mustn't we have thrumed?
mustn't you have thrumed?
mustn't they have thrumed? 	mustn't I have been thruming?
mustn't you have been thruming?
mustn't she have been thruming?
mustn't we have been thruming?
mustn't you have been thruming?
mustn't they have been thruming?