must chirrup
Verbe régulier : chirrup - chirruped- chirruped
Traduction française : pépier - chanter 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must chirrup
you must chirrup
he must chirrup
we must chirrup
you must chirrup
they must chirrup 	I must be chirruping
you must be chirruping
he must be chirruping
we must be chirruping
you must be chirruping
they must be chirruping	I must have chirruped
you must have chirruped
he must have chirruped
we must have chirruped
you must have chirruped
they must have chirruped	I must have been chirruping
you must have been chirruping
he must have been chirruping
we must have been chirruping
you must have been chirruping
they must have been chirruping	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't chirrup
you mustn't chirrup
he mustn't chirrup
we mustn't chirrup
you mustn't chirrup
they mustn't chirrup 	I mustn't be chirruping
you mustn't be chirruping
he mustn't be chirruping
we mustn't be chirruping
you mustn't be chirruping
they mustn't be chirruping	I mustn't have chirruped
you mustn't have chirruped
he mustn't have chirruped
we mustn't have chirruped
you mustn't have chirruped
they mustn't have chirruped	I mustn't have been chirruping
you mustn't have been chirruping
he mustn't have been chirruping
we mustn't have been chirruping
you mustn't have been chirruping
they mustn't have been chirruping	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I chirrup?
must you chirrup?
must he chirrup?
must we chirrup?
must you chirrup?
must they chirrup? 	must I be chirruping?
must you be chirruping?
must he be chirruping?
must we be chirruping?
must you be chirruping?
must they be chirruping? 	must I have chirruped?
must you have chirruped?
must he have chirruped?
must we have chirruped?
must you have chirruped?
must they have chirruped? 	must I have been chirruping?
must you have been chirruping?
must he have been chirruping?
must we have been chirruping?
must you have been chirruping?
must they have been chirruping? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I chirrup?
mustn't you chirrup?
mustn't he chirrup?
mustn't we chirrup?
mustn't you chirrup?
mustn't they chirrup? 	mustn't I be chirruping?
mustn't you be chirruping?
mustn't he be chirruping?
mustn't we be chirruping?
mustn't you be chirruping?
mustn't they be chirruping? 	mustn't I have chirruped?
mustn't you have chirruped?
mustn't he have chirruped?
mustn't we have chirruped?
mustn't you have chirruped?
mustn't they have chirruped? 	mustn't I have been chirruping?
mustn't you have been chirruping?
mustn't he have been chirruping?
mustn't we have been chirruping?
mustn't you have been chirruping?
mustn't they have been chirruping?