must double
Verbo regular: double - doubled- doubled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must double
you must double
she must double
we must double
you must double
they must double 	I must be doubling
you must be doubling
she must be doubling
we must be doubling
you must be doubling
they must be doubling	I must have doubled
you must have doubled
she must have doubled
we must have doubled
you must have doubled
they must have doubled	I must have been doubling
you must have been doubling
she must have been doubling
we must have been doubling
you must have been doubling
they must have been doubling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't double
you mustn't double
she mustn't double
we mustn't double
you mustn't double
they mustn't double 	I mustn't be doubling
you mustn't be doubling
she mustn't be doubling
we mustn't be doubling
you mustn't be doubling
they mustn't be doubling	I mustn't have doubled
you mustn't have doubled
she mustn't have doubled
we mustn't have doubled
you mustn't have doubled
they mustn't have doubled	I mustn't have been doubling
you mustn't have been doubling
she mustn't have been doubling
we mustn't have been doubling
you mustn't have been doubling
they mustn't have been doubling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I double?
must you double?
must she double?
must we double?
must you double?
must they double? 	must I be doubling?
must you be doubling?
must she be doubling?
must we be doubling?
must you be doubling?
must they be doubling? 	must I have doubled?
must you have doubled?
must she have doubled?
must we have doubled?
must you have doubled?
must they have doubled? 	must I have been doubling?
must you have been doubling?
must she have been doubling?
must we have been doubling?
must you have been doubling?
must they have been doubling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I double?
mustn't you double?
mustn't she double?
mustn't we double?
mustn't you double?
mustn't they double? 	mustn't I be doubling?
mustn't you be doubling?
mustn't she be doubling?
mustn't we be doubling?
mustn't you be doubling?
mustn't they be doubling? 	mustn't I have doubled?
mustn't you have doubled?
mustn't she have doubled?
mustn't we have doubled?
mustn't you have doubled?
mustn't they have doubled? 	mustn't I have been doubling?
mustn't you have been doubling?
mustn't she have been doubling?
mustn't we have been doubling?
mustn't you have been doubling?
mustn't they have been doubling?