can checkmate
Verbo regular: checkmate - checkmated- checkmated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can checkmate
you can checkmate
he can checkmate
we can checkmate
you can checkmate
they can checkmate 	I can be checkmating
you can be checkmating
he can be checkmating
we can be checkmating
you can be checkmating
they can be checkmating	I can have checkmated
you can have checkmated
he can have checkmated
we can have checkmated
you can have checkmated
they can have checkmated	I can have been checkmating
you can have been checkmating
he can have been checkmating
we can have been checkmating
you can have been checkmating
they can have been checkmating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't checkmate
you can't checkmate
he can't checkmate
we can't checkmate
you can't checkmate
they can't checkmate 	I can't be checkmating
you can't be checkmating
he can't be checkmating
we can't be checkmating
you can't be checkmating
they can't be checkmating	I can't have checkmated
you can't have checkmated
he can't have checkmated
we can't have checkmated
you can't have checkmated
they can't have checkmated	I can't have been checkmating
you can't have been checkmating
he can't have been checkmating
we can't have been checkmating
you can't have been checkmating
they can't have been checkmating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I checkmate?
can you checkmate?
can he checkmate?
can we checkmate?
can you checkmate?
can they checkmate? 	can I be checkmating?
can you be checkmating?
can he be checkmating?
can we be checkmating?
can you be checkmating?
can they be checkmating? 	can I have checkmated?
can you have checkmated?
can he have checkmated?
can we have checkmated?
can you have checkmated?
can they have checkmated? 	can I have been checkmating?
can you have been checkmating?
can he have been checkmating?
can we have been checkmating?
can you have been checkmating?
can they have been checkmating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I checkmate?
can't you checkmate?
can't he checkmate?
can't we checkmate?
can't you checkmate?
can't they checkmate? 	can't I be checkmating?
can't you be checkmating?
can't he be checkmating?
can't we be checkmating?
can't you be checkmating?
can't they be checkmating? 	can't I have checkmated?
can't you have checkmated?
can't he have checkmated?
can't we have checkmated?
can't you have checkmated?
can't they have checkmated? 	can't I have been checkmating?
can't you have been checkmating?
can't he have been checkmating?
can't we have been checkmating?
can't you have been checkmating?
can't they have been checkmating?