must surfboard
Verbe régulier : surfboard - surfboarded- surfboarded

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must surfboard
you must surfboard
she must surfboard
we must surfboard
you must surfboard
they must surfboard 	I must be surfboarding
you must be surfboarding
she must be surfboarding
we must be surfboarding
you must be surfboarding
they must be surfboarding	I must have surfboarded
you must have surfboarded
she must have surfboarded
we must have surfboarded
you must have surfboarded
they must have surfboarded	I must have been surfboarding
you must have been surfboarding
she must have been surfboarding
we must have been surfboarding
you must have been surfboarding
they must have been surfboarding	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't surfboard
you mustn't surfboard
she mustn't surfboard
we mustn't surfboard
you mustn't surfboard
they mustn't surfboard 	I mustn't be surfboarding
you mustn't be surfboarding
she mustn't be surfboarding
we mustn't be surfboarding
you mustn't be surfboarding
they mustn't be surfboarding	I mustn't have surfboarded
you mustn't have surfboarded
she mustn't have surfboarded
we mustn't have surfboarded
you mustn't have surfboarded
they mustn't have surfboarded	I mustn't have been surfboarding
you mustn't have been surfboarding
she mustn't have been surfboarding
we mustn't have been surfboarding
you mustn't have been surfboarding
they mustn't have been surfboarding	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I surfboard?
must you surfboard?
must she surfboard?
must we surfboard?
must you surfboard?
must they surfboard? 	must I be surfboarding?
must you be surfboarding?
must she be surfboarding?
must we be surfboarding?
must you be surfboarding?
must they be surfboarding? 	must I have surfboarded?
must you have surfboarded?
must she have surfboarded?
must we have surfboarded?
must you have surfboarded?
must they have surfboarded? 	must I have been surfboarding?
must you have been surfboarding?
must she have been surfboarding?
must we have been surfboarding?
must you have been surfboarding?
must they have been surfboarding? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I surfboard?
mustn't you surfboard?
mustn't she surfboard?
mustn't we surfboard?
mustn't you surfboard?
mustn't they surfboard? 	mustn't I be surfboarding?
mustn't you be surfboarding?
mustn't she be surfboarding?
mustn't we be surfboarding?
mustn't you be surfboarding?
mustn't they be surfboarding? 	mustn't I have surfboarded?
mustn't you have surfboarded?
mustn't she have surfboarded?
mustn't we have surfboarded?
mustn't you have surfboarded?
mustn't they have surfboarded? 	mustn't I have been surfboarding?
mustn't you have been surfboarding?
mustn't she have been surfboarding?
mustn't we have been surfboarding?
mustn't you have been surfboarding?
mustn't they have been surfboarding?