can center
Verbo regular: center - centered- centered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can center
you can center
he can center
we can center
you can center
they can center 	I can be centering
you can be centering
he can be centering
we can be centering
you can be centering
they can be centering	I can have centered
you can have centered
he can have centered
we can have centered
you can have centered
they can have centered	I can have been centering
you can have been centering
he can have been centering
we can have been centering
you can have been centering
they can have been centering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot center
you cannot center
he cannot center
we cannot center
you cannot center
they cannot center 	I cannot be centering
you cannot be centering
he cannot be centering
we cannot be centering
you cannot be centering
they cannot be centering	I cannot have centered
you cannot have centered
he cannot have centered
we cannot have centered
you cannot have centered
they cannot have centered	I cannot have been centering
you cannot have been centering
he cannot have been centering
we cannot have been centering
you cannot have been centering
they cannot have been centering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I center?
can you center?
can he center?
can we center?
can you center?
can they center? 	can I be centering?
can you be centering?
can he be centering?
can we be centering?
can you be centering?
can they be centering? 	can I have centered?
can you have centered?
can he have centered?
can we have centered?
can you have centered?
can they have centered? 	can I have been centering?
can you have been centering?
can he have been centering?
can we have been centering?
can you have been centering?
can they have been centering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not center?
can you not center?
can he not center?
can we not center?
can you not center?
can they not center? 	can I not be centering?
can you not be centering?
can he not be centering?
can we not be centering?
can you not be centering?
can they not be centering? 	can I not have centered?
can you not have centered?
can he not have centered?
can we not have centered?
can you not have centered?
can they not have centered? 	can I not have been centering?
can you not have been centering?
can he not have been centering?
can we not have been centering?
can you not have been centering?
can they not have been centering?