must chuck
Verbo regular: chuck - chucked- chucked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must chuck
you must chuck
he must chuck
we must chuck
you must chuck
they must chuck 	I must be chucking
you must be chucking
he must be chucking
we must be chucking
you must be chucking
they must be chucking	I must have chucked
you must have chucked
he must have chucked
we must have chucked
you must have chucked
they must have chucked	I must have been chucking
you must have been chucking
he must have been chucking
we must have been chucking
you must have been chucking
they must have been chucking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't chuck
you mustn't chuck
he mustn't chuck
we mustn't chuck
you mustn't chuck
they mustn't chuck 	I mustn't be chucking
you mustn't be chucking
he mustn't be chucking
we mustn't be chucking
you mustn't be chucking
they mustn't be chucking	I mustn't have chucked
you mustn't have chucked
he mustn't have chucked
we mustn't have chucked
you mustn't have chucked
they mustn't have chucked	I mustn't have been chucking
you mustn't have been chucking
he mustn't have been chucking
we mustn't have been chucking
you mustn't have been chucking
they mustn't have been chucking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I chuck?
must you chuck?
must he chuck?
must we chuck?
must you chuck?
must they chuck? 	must I be chucking?
must you be chucking?
must he be chucking?
must we be chucking?
must you be chucking?
must they be chucking? 	must I have chucked?
must you have chucked?
must he have chucked?
must we have chucked?
must you have chucked?
must they have chucked? 	must I have been chucking?
must you have been chucking?
must he have been chucking?
must we have been chucking?
must you have been chucking?
must they have been chucking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I chuck?
mustn't you chuck?
mustn't he chuck?
mustn't we chuck?
mustn't you chuck?
mustn't they chuck? 	mustn't I be chucking?
mustn't you be chucking?
mustn't he be chucking?
mustn't we be chucking?
mustn't you be chucking?
mustn't they be chucking? 	mustn't I have chucked?
mustn't you have chucked?
mustn't he have chucked?
mustn't we have chucked?
mustn't you have chucked?
mustn't they have chucked? 	mustn't I have been chucking?
mustn't you have been chucking?
mustn't he have been chucking?
mustn't we have been chucking?
mustn't you have been chucking?
mustn't they have been chucking?