must flounder
Verbe régulier : flounder - floundered- floundered
Traduction française : patauger péniblement - perdre pied 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must flounder
you must flounder
he must flounder
we must flounder
you must flounder
they must flounder 	I must be floundering
you must be floundering
he must be floundering
we must be floundering
you must be floundering
they must be floundering	I must have floundered
you must have floundered
he must have floundered
we must have floundered
you must have floundered
they must have floundered	I must have been floundering
you must have been floundering
he must have been floundering
we must have been floundering
you must have been floundering
they must have been floundering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't flounder
you mustn't flounder
he mustn't flounder
we mustn't flounder
you mustn't flounder
they mustn't flounder 	I mustn't be floundering
you mustn't be floundering
he mustn't be floundering
we mustn't be floundering
you mustn't be floundering
they mustn't be floundering	I mustn't have floundered
you mustn't have floundered
he mustn't have floundered
we mustn't have floundered
you mustn't have floundered
they mustn't have floundered	I mustn't have been floundering
you mustn't have been floundering
he mustn't have been floundering
we mustn't have been floundering
you mustn't have been floundering
they mustn't have been floundering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I flounder?
must you flounder?
must he flounder?
must we flounder?
must you flounder?
must they flounder? 	must I be floundering?
must you be floundering?
must he be floundering?
must we be floundering?
must you be floundering?
must they be floundering? 	must I have floundered?
must you have floundered?
must he have floundered?
must we have floundered?
must you have floundered?
must they have floundered? 	must I have been floundering?
must you have been floundering?
must he have been floundering?
must we have been floundering?
must you have been floundering?
must they have been floundering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I flounder?
mustn't you flounder?
mustn't he flounder?
mustn't we flounder?
mustn't you flounder?
mustn't they flounder? 	mustn't I be floundering?
mustn't you be floundering?
mustn't he be floundering?
mustn't we be floundering?
mustn't you be floundering?
mustn't they be floundering? 	mustn't I have floundered?
mustn't you have floundered?
mustn't he have floundered?
mustn't we have floundered?
mustn't you have floundered?
mustn't they have floundered? 	mustn't I have been floundering?
mustn't you have been floundering?
mustn't he have been floundering?
mustn't we have been floundering?
mustn't you have been floundering?
mustn't they have been floundering?