must react
Verbo regular: react - reacted- reacted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must react
you must react
she must react
we must react
you must react
they must react 	I must be reacting
you must be reacting
she must be reacting
we must be reacting
you must be reacting
they must be reacting	I must have reacted
you must have reacted
she must have reacted
we must have reacted
you must have reacted
they must have reacted	I must have been reacting
you must have been reacting
she must have been reacting
we must have been reacting
you must have been reacting
they must have been reacting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't react
you mustn't react
she mustn't react
we mustn't react
you mustn't react
they mustn't react 	I mustn't be reacting
you mustn't be reacting
she mustn't be reacting
we mustn't be reacting
you mustn't be reacting
they mustn't be reacting	I mustn't have reacted
you mustn't have reacted
she mustn't have reacted
we mustn't have reacted
you mustn't have reacted
they mustn't have reacted	I mustn't have been reacting
you mustn't have been reacting
she mustn't have been reacting
we mustn't have been reacting
you mustn't have been reacting
they mustn't have been reacting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I react?
must you react?
must she react?
must we react?
must you react?
must they react? 	must I be reacting?
must you be reacting?
must she be reacting?
must we be reacting?
must you be reacting?
must they be reacting? 	must I have reacted?
must you have reacted?
must she have reacted?
must we have reacted?
must you have reacted?
must they have reacted? 	must I have been reacting?
must you have been reacting?
must she have been reacting?
must we have been reacting?
must you have been reacting?
must they have been reacting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I react?
mustn't you react?
mustn't she react?
mustn't we react?
mustn't you react?
mustn't they react? 	mustn't I be reacting?
mustn't you be reacting?
mustn't she be reacting?
mustn't we be reacting?
mustn't you be reacting?
mustn't they be reacting? 	mustn't I have reacted?
mustn't you have reacted?
mustn't she have reacted?
mustn't we have reacted?
mustn't you have reacted?
mustn't they have reacted? 	mustn't I have been reacting?
mustn't you have been reacting?
mustn't she have been reacting?
mustn't we have been reacting?
mustn't you have been reacting?
mustn't they have been reacting?