must foil
Verbe régulier : foil - foiled- foiled
Traduction française : déjouer - contrecarrer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must foil
you must foil
he must foil
we must foil
you must foil
they must foil 	I must be foiling
you must be foiling
he must be foiling
we must be foiling
you must be foiling
they must be foiling	I must have foiled
you must have foiled
he must have foiled
we must have foiled
you must have foiled
they must have foiled	I must have been foiling
you must have been foiling
he must have been foiling
we must have been foiling
you must have been foiling
they must have been foiling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't foil
you mustn't foil
he mustn't foil
we mustn't foil
you mustn't foil
they mustn't foil 	I mustn't be foiling
you mustn't be foiling
he mustn't be foiling
we mustn't be foiling
you mustn't be foiling
they mustn't be foiling	I mustn't have foiled
you mustn't have foiled
he mustn't have foiled
we mustn't have foiled
you mustn't have foiled
they mustn't have foiled	I mustn't have been foiling
you mustn't have been foiling
he mustn't have been foiling
we mustn't have been foiling
you mustn't have been foiling
they mustn't have been foiling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I foil?
must you foil?
must he foil?
must we foil?
must you foil?
must they foil? 	must I be foiling?
must you be foiling?
must he be foiling?
must we be foiling?
must you be foiling?
must they be foiling? 	must I have foiled?
must you have foiled?
must he have foiled?
must we have foiled?
must you have foiled?
must they have foiled? 	must I have been foiling?
must you have been foiling?
must he have been foiling?
must we have been foiling?
must you have been foiling?
must they have been foiling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I foil?
mustn't you foil?
mustn't he foil?
mustn't we foil?
mustn't you foil?
mustn't they foil? 	mustn't I be foiling?
mustn't you be foiling?
mustn't he be foiling?
mustn't we be foiling?
mustn't you be foiling?
mustn't they be foiling? 	mustn't I have foiled?
mustn't you have foiled?
mustn't he have foiled?
mustn't we have foiled?
mustn't you have foiled?
mustn't they have foiled? 	mustn't I have been foiling?
mustn't you have been foiling?
mustn't he have been foiling?
mustn't we have been foiling?
mustn't you have been foiling?
mustn't they have been foiling?