must disturb
Verbo regular: disturb - disturbed- disturbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must disturb
you must disturb
he must disturb
we must disturb
you must disturb
they must disturb 	I must be disturbing
you must be disturbing
he must be disturbing
we must be disturbing
you must be disturbing
they must be disturbing	I must have disturbed
you must have disturbed
he must have disturbed
we must have disturbed
you must have disturbed
they must have disturbed	I must have been disturbing
you must have been disturbing
he must have been disturbing
we must have been disturbing
you must have been disturbing
they must have been disturbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't disturb
you mustn't disturb
he mustn't disturb
we mustn't disturb
you mustn't disturb
they mustn't disturb 	I mustn't be disturbing
you mustn't be disturbing
he mustn't be disturbing
we mustn't be disturbing
you mustn't be disturbing
they mustn't be disturbing	I mustn't have disturbed
you mustn't have disturbed
he mustn't have disturbed
we mustn't have disturbed
you mustn't have disturbed
they mustn't have disturbed	I mustn't have been disturbing
you mustn't have been disturbing
he mustn't have been disturbing
we mustn't have been disturbing
you mustn't have been disturbing
they mustn't have been disturbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I disturb?
must you disturb?
must he disturb?
must we disturb?
must you disturb?
must they disturb? 	must I be disturbing?
must you be disturbing?
must he be disturbing?
must we be disturbing?
must you be disturbing?
must they be disturbing? 	must I have disturbed?
must you have disturbed?
must he have disturbed?
must we have disturbed?
must you have disturbed?
must they have disturbed? 	must I have been disturbing?
must you have been disturbing?
must he have been disturbing?
must we have been disturbing?
must you have been disturbing?
must they have been disturbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I disturb?
mustn't you disturb?
mustn't he disturb?
mustn't we disturb?
mustn't you disturb?
mustn't they disturb? 	mustn't I be disturbing?
mustn't you be disturbing?
mustn't he be disturbing?
mustn't we be disturbing?
mustn't you be disturbing?
mustn't they be disturbing? 	mustn't I have disturbed?
mustn't you have disturbed?
mustn't he have disturbed?
mustn't we have disturbed?
mustn't you have disturbed?
mustn't they have disturbed? 	mustn't I have been disturbing?
mustn't you have been disturbing?
mustn't he have been disturbing?
mustn't we have been disturbing?
mustn't you have been disturbing?
mustn't they have been disturbing?