must froth
Verbe régulier : froth - frothed- frothed
Traduction française : écumer - faire mousser 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must froth
you must froth
he must froth
we must froth
you must froth
they must froth 	I must be frothing
you must be frothing
he must be frothing
we must be frothing
you must be frothing
they must be frothing	I must have frothed
you must have frothed
he must have frothed
we must have frothed
you must have frothed
they must have frothed	I must have been frothing
you must have been frothing
he must have been frothing
we must have been frothing
you must have been frothing
they must have been frothing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't froth
you mustn't froth
he mustn't froth
we mustn't froth
you mustn't froth
they mustn't froth 	I mustn't be frothing
you mustn't be frothing
he mustn't be frothing
we mustn't be frothing
you mustn't be frothing
they mustn't be frothing	I mustn't have frothed
you mustn't have frothed
he mustn't have frothed
we mustn't have frothed
you mustn't have frothed
they mustn't have frothed	I mustn't have been frothing
you mustn't have been frothing
he mustn't have been frothing
we mustn't have been frothing
you mustn't have been frothing
they mustn't have been frothing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I froth?
must you froth?
must he froth?
must we froth?
must you froth?
must they froth? 	must I be frothing?
must you be frothing?
must he be frothing?
must we be frothing?
must you be frothing?
must they be frothing? 	must I have frothed?
must you have frothed?
must he have frothed?
must we have frothed?
must you have frothed?
must they have frothed? 	must I have been frothing?
must you have been frothing?
must he have been frothing?
must we have been frothing?
must you have been frothing?
must they have been frothing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I froth?
mustn't you froth?
mustn't he froth?
mustn't we froth?
mustn't you froth?
mustn't they froth? 	mustn't I be frothing?
mustn't you be frothing?
mustn't he be frothing?
mustn't we be frothing?
mustn't you be frothing?
mustn't they be frothing? 	mustn't I have frothed?
mustn't you have frothed?
mustn't he have frothed?
mustn't we have frothed?
mustn't you have frothed?
mustn't they have frothed? 	mustn't I have been frothing?
mustn't you have been frothing?
mustn't he have been frothing?
mustn't we have been frothing?
mustn't you have been frothing?
mustn't they have been frothing?