can matter
Verbo regular: matter - mattered- mattered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can matter
you can matter
she can matter
we can matter
you can matter
they can matter 	I can be mattering
you can be mattering
she can be mattering
we can be mattering
you can be mattering
they can be mattering	I can have mattered
you can have mattered
she can have mattered
we can have mattered
you can have mattered
they can have mattered	I can have been mattering
you can have been mattering
she can have been mattering
we can have been mattering
you can have been mattering
they can have been mattering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't matter
you can't matter
she can't matter
we can't matter
you can't matter
they can't matter 	I can't be mattering
you can't be mattering
she can't be mattering
we can't be mattering
you can't be mattering
they can't be mattering	I can't have mattered
you can't have mattered
she can't have mattered
we can't have mattered
you can't have mattered
they can't have mattered	I can't have been mattering
you can't have been mattering
she can't have been mattering
we can't have been mattering
you can't have been mattering
they can't have been mattering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I matter?
can you matter?
can she matter?
can we matter?
can you matter?
can they matter? 	can I be mattering?
can you be mattering?
can she be mattering?
can we be mattering?
can you be mattering?
can they be mattering? 	can I have mattered?
can you have mattered?
can she have mattered?
can we have mattered?
can you have mattered?
can they have mattered? 	can I have been mattering?
can you have been mattering?
can she have been mattering?
can we have been mattering?
can you have been mattering?
can they have been mattering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I matter?
can't you matter?
can't she matter?
can't we matter?
can't you matter?
can't they matter? 	can't I be mattering?
can't you be mattering?
can't she be mattering?
can't we be mattering?
can't you be mattering?
can't they be mattering? 	can't I have mattered?
can't you have mattered?
can't she have mattered?
can't we have mattered?
can't you have mattered?
can't they have mattered? 	can't I have been mattering?
can't you have been mattering?
can't she have been mattering?
can't we have been mattering?
can't you have been mattering?
can't they have been mattering?