must quiver
Verbe régulier : quiver - quivered- quivered
Traduction française : frémir - trembler 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must quiver
you must quiver
he must quiver
we must quiver
you must quiver
they must quiver 	I must be quivering
you must be quivering
he must be quivering
we must be quivering
you must be quivering
they must be quivering	I must have quivered
you must have quivered
he must have quivered
we must have quivered
you must have quivered
they must have quivered	I must have been quivering
you must have been quivering
he must have been quivering
we must have been quivering
you must have been quivering
they must have been quivering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't quiver
you mustn't quiver
he mustn't quiver
we mustn't quiver
you mustn't quiver
they mustn't quiver 	I mustn't be quivering
you mustn't be quivering
he mustn't be quivering
we mustn't be quivering
you mustn't be quivering
they mustn't be quivering	I mustn't have quivered
you mustn't have quivered
he mustn't have quivered
we mustn't have quivered
you mustn't have quivered
they mustn't have quivered	I mustn't have been quivering
you mustn't have been quivering
he mustn't have been quivering
we mustn't have been quivering
you mustn't have been quivering
they mustn't have been quivering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I quiver?
must you quiver?
must he quiver?
must we quiver?
must you quiver?
must they quiver? 	must I be quivering?
must you be quivering?
must he be quivering?
must we be quivering?
must you be quivering?
must they be quivering? 	must I have quivered?
must you have quivered?
must he have quivered?
must we have quivered?
must you have quivered?
must they have quivered? 	must I have been quivering?
must you have been quivering?
must he have been quivering?
must we have been quivering?
must you have been quivering?
must they have been quivering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I quiver?
mustn't you quiver?
mustn't he quiver?
mustn't we quiver?
mustn't you quiver?
mustn't they quiver? 	mustn't I be quivering?
mustn't you be quivering?
mustn't he be quivering?
mustn't we be quivering?
mustn't you be quivering?
mustn't they be quivering? 	mustn't I have quivered?
mustn't you have quivered?
mustn't he have quivered?
mustn't we have quivered?
mustn't you have quivered?
mustn't they have quivered? 	mustn't I have been quivering?
mustn't you have been quivering?
mustn't he have been quivering?
mustn't we have been quivering?
mustn't you have been quivering?
mustn't they have been quivering?