must defer
Verbo regular: defer - deferred- deferred

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must defer
you must defer
he must defer
we must defer
you must defer
they must defer 	I must be deferring
you must be deferring
he must be deferring
we must be deferring
you must be deferring
they must be deferring	I must have deferred
you must have deferred
he must have deferred
we must have deferred
you must have deferred
they must have deferred	I must have been deferring
you must have been deferring
he must have been deferring
we must have been deferring
you must have been deferring
they must have been deferring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't defer
you mustn't defer
he mustn't defer
we mustn't defer
you mustn't defer
they mustn't defer 	I mustn't be deferring
you mustn't be deferring
he mustn't be deferring
we mustn't be deferring
you mustn't be deferring
they mustn't be deferring	I mustn't have deferred
you mustn't have deferred
he mustn't have deferred
we mustn't have deferred
you mustn't have deferred
they mustn't have deferred	I mustn't have been deferring
you mustn't have been deferring
he mustn't have been deferring
we mustn't have been deferring
you mustn't have been deferring
they mustn't have been deferring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I defer?
must you defer?
must he defer?
must we defer?
must you defer?
must they defer? 	must I be deferring?
must you be deferring?
must he be deferring?
must we be deferring?
must you be deferring?
must they be deferring? 	must I have deferred?
must you have deferred?
must he have deferred?
must we have deferred?
must you have deferred?
must they have deferred? 	must I have been deferring?
must you have been deferring?
must he have been deferring?
must we have been deferring?
must you have been deferring?
must they have been deferring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I defer?
mustn't you defer?
mustn't he defer?
mustn't we defer?
mustn't you defer?
mustn't they defer? 	mustn't I be deferring?
mustn't you be deferring?
mustn't he be deferring?
mustn't we be deferring?
mustn't you be deferring?
mustn't they be deferring? 	mustn't I have deferred?
mustn't you have deferred?
mustn't he have deferred?
mustn't we have deferred?
mustn't you have deferred?
mustn't they have deferred? 	mustn't I have been deferring?
mustn't you have been deferring?
mustn't he have been deferring?
mustn't we have been deferring?
mustn't you have been deferring?
mustn't they have been deferring?