can double
Verbo regular: double - doubled- doubled

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

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

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

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