must fell
Verbo regolare: fell - felled- felled

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must fell
you must fell
he must fell
we must fell
you must fell
they must fell 	I must be felling
you must be felling
he must be felling
we must be felling
you must be felling
they must be felling	I must have felled
you must have felled
he must have felled
we must have felled
you must have felled
they must have felled	I must have been felling
you must have been felling
he must have been felling
we must have been felling
you must have been felling
they must have been felling	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't fell
you mustn't fell
he mustn't fell
we mustn't fell
you mustn't fell
they mustn't fell 	I mustn't be felling
you mustn't be felling
he mustn't be felling
we mustn't be felling
you mustn't be felling
they mustn't be felling	I mustn't have felled
you mustn't have felled
he mustn't have felled
we mustn't have felled
you mustn't have felled
they mustn't have felled	I mustn't have been felling
you mustn't have been felling
he mustn't have been felling
we mustn't have been felling
you mustn't have been felling
they mustn't have been felling	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I fell?
must you fell?
must he fell?
must we fell?
must you fell?
must they fell? 	must I be felling?
must you be felling?
must he be felling?
must we be felling?
must you be felling?
must they be felling? 	must I have felled?
must you have felled?
must he have felled?
must we have felled?
must you have felled?
must they have felled? 	must I have been felling?
must you have been felling?
must he have been felling?
must we have been felling?
must you have been felling?
must they have been felling? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I fell?
mustn't you fell?
mustn't he fell?
mustn't we fell?
mustn't you fell?
mustn't they fell? 	mustn't I be felling?
mustn't you be felling?
mustn't he be felling?
mustn't we be felling?
mustn't you be felling?
mustn't they be felling? 	mustn't I have felled?
mustn't you have felled?
mustn't he have felled?
mustn't we have felled?
mustn't you have felled?
mustn't they have felled? 	mustn't I have been felling?
mustn't you have been felling?
mustn't he have been felling?
mustn't we have been felling?
mustn't you have been felling?
mustn't they have been felling?