must warble
Verbe régulier : warble - warbled- warbled
Traduction française : gazouiller - chanter (avec des trilles) - gazouiller - chanter (avec des trilles) 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must warble
you must warble
he must warble
we must warble
you must warble
they must warble 	I must be warbling
you must be warbling
he must be warbling
we must be warbling
you must be warbling
they must be warbling	I must have warbled
you must have warbled
he must have warbled
we must have warbled
you must have warbled
they must have warbled	I must have been warbling
you must have been warbling
he must have been warbling
we must have been warbling
you must have been warbling
they must have been warbling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't warble
you mustn't warble
he mustn't warble
we mustn't warble
you mustn't warble
they mustn't warble 	I mustn't be warbling
you mustn't be warbling
he mustn't be warbling
we mustn't be warbling
you mustn't be warbling
they mustn't be warbling	I mustn't have warbled
you mustn't have warbled
he mustn't have warbled
we mustn't have warbled
you mustn't have warbled
they mustn't have warbled	I mustn't have been warbling
you mustn't have been warbling
he mustn't have been warbling
we mustn't have been warbling
you mustn't have been warbling
they mustn't have been warbling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I warble?
must you warble?
must he warble?
must we warble?
must you warble?
must they warble? 	must I be warbling?
must you be warbling?
must he be warbling?
must we be warbling?
must you be warbling?
must they be warbling? 	must I have warbled?
must you have warbled?
must he have warbled?
must we have warbled?
must you have warbled?
must they have warbled? 	must I have been warbling?
must you have been warbling?
must he have been warbling?
must we have been warbling?
must you have been warbling?
must they have been warbling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I warble?
mustn't you warble?
mustn't he warble?
mustn't we warble?
mustn't you warble?
mustn't they warble? 	mustn't I be warbling?
mustn't you be warbling?
mustn't he be warbling?
mustn't we be warbling?
mustn't you be warbling?
mustn't they be warbling? 	mustn't I have warbled?
mustn't you have warbled?
mustn't he have warbled?
mustn't we have warbled?
mustn't you have warbled?
mustn't they have warbled? 	mustn't I have been warbling?
mustn't you have been warbling?
mustn't he have been warbling?
mustn't we have been warbling?
mustn't you have been warbling?
mustn't they have been warbling?