must behave
Verbe régulier : behave - behaved- behaved
Traduction française : se comporter - se comporter 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must behave
you must behave
she must behave
we must behave
you must behave
they must behave 	I must be behaving
you must be behaving
she must be behaving
we must be behaving
you must be behaving
they must be behaving	I must have behaved
you must have behaved
she must have behaved
we must have behaved
you must have behaved
they must have behaved	I must have been behaving
you must have been behaving
she must have been behaving
we must have been behaving
you must have been behaving
they must have been behaving	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't behave
you mustn't behave
she mustn't behave
we mustn't behave
you mustn't behave
they mustn't behave 	I mustn't be behaving
you mustn't be behaving
she mustn't be behaving
we mustn't be behaving
you mustn't be behaving
they mustn't be behaving	I mustn't have behaved
you mustn't have behaved
she mustn't have behaved
we mustn't have behaved
you mustn't have behaved
they mustn't have behaved	I mustn't have been behaving
you mustn't have been behaving
she mustn't have been behaving
we mustn't have been behaving
you mustn't have been behaving
they mustn't have been behaving	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I behave?
must you behave?
must she behave?
must we behave?
must you behave?
must they behave? 	must I be behaving?
must you be behaving?
must she be behaving?
must we be behaving?
must you be behaving?
must they be behaving? 	must I have behaved?
must you have behaved?
must she have behaved?
must we have behaved?
must you have behaved?
must they have behaved? 	must I have been behaving?
must you have been behaving?
must she have been behaving?
must we have been behaving?
must you have been behaving?
must they have been behaving? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I behave?
mustn't you behave?
mustn't she behave?
mustn't we behave?
mustn't you behave?
mustn't they behave? 	mustn't I be behaving?
mustn't you be behaving?
mustn't she be behaving?
mustn't we be behaving?
mustn't you be behaving?
mustn't they be behaving? 	mustn't I have behaved?
mustn't you have behaved?
mustn't she have behaved?
mustn't we have behaved?
mustn't you have behaved?
mustn't they have behaved? 	mustn't I have been behaving?
mustn't you have been behaving?
mustn't she have been behaving?
mustn't we have been behaving?
mustn't you have been behaving?
mustn't they have been behaving?