must brood
Verbo regular: brood - brooded- brooded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must brood
you must brood
he must brood
we must brood
you must brood
they must brood 	I must be brooding
you must be brooding
he must be brooding
we must be brooding
you must be brooding
they must be brooding	I must have brooded
you must have brooded
he must have brooded
we must have brooded
you must have brooded
they must have brooded	I must have been brooding
you must have been brooding
he must have been brooding
we must have been brooding
you must have been brooding
they must have been brooding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't brood
you mustn't brood
he mustn't brood
we mustn't brood
you mustn't brood
they mustn't brood 	I mustn't be brooding
you mustn't be brooding
he mustn't be brooding
we mustn't be brooding
you mustn't be brooding
they mustn't be brooding	I mustn't have brooded
you mustn't have brooded
he mustn't have brooded
we mustn't have brooded
you mustn't have brooded
they mustn't have brooded	I mustn't have been brooding
you mustn't have been brooding
he mustn't have been brooding
we mustn't have been brooding
you mustn't have been brooding
they mustn't have been brooding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I brood?
must you brood?
must he brood?
must we brood?
must you brood?
must they brood? 	must I be brooding?
must you be brooding?
must he be brooding?
must we be brooding?
must you be brooding?
must they be brooding? 	must I have brooded?
must you have brooded?
must he have brooded?
must we have brooded?
must you have brooded?
must they have brooded? 	must I have been brooding?
must you have been brooding?
must he have been brooding?
must we have been brooding?
must you have been brooding?
must they have been brooding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I brood?
mustn't you brood?
mustn't he brood?
mustn't we brood?
mustn't you brood?
mustn't they brood? 	mustn't I be brooding?
mustn't you be brooding?
mustn't he be brooding?
mustn't we be brooding?
mustn't you be brooding?
mustn't they be brooding? 	mustn't I have brooded?
mustn't you have brooded?
mustn't he have brooded?
mustn't we have brooded?
mustn't you have brooded?
mustn't they have brooded? 	mustn't I have been brooding?
mustn't you have been brooding?
mustn't he have been brooding?
mustn't we have been brooding?
mustn't you have been brooding?
mustn't they have been brooding?