could mate
Verbo regular: mate - mated- mated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could mate
you could mate
he could mate
we could mate
you could mate
they could mate 	I could be mating
you could be mating
he could be mating
we could be mating
you could be mating
they could be mating	I could have mated
you could have mated
he could have mated
we could have mated
you could have mated
they could have mated	I could have been mating
you could have been mating
he could have been mating
we could have been mating
you could have been mating
they could have been mating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not mate
you could not mate
he could not mate
we could not mate
you could not mate
they could not mate 	I could not be mating
you could not be mating
he could not be mating
we could not be mating
you could not be mating
they could not be mating	I could not have mated
you could not have mated
he could not have mated
we could not have mated
you could not have mated
they could not have mated	I could not have been mating
you could not have been mating
he could not have been mating
we could not have been mating
you could not have been mating
they could not have been mating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I mate?
could you mate?
could he mate?
could we mate?
could you mate?
could they mate? 	could I be mating?
could you be mating?
could he be mating?
could we be mating?
could you be mating?
could they be mating? 	could I have mated?
could you have mated?
could he have mated?
could we have mated?
could you have mated?
could they have mated? 	could I have been mating?
could you have been mating?
could he have been mating?
could we have been mating?
could you have been mating?
could they have been mating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not mate?
could you not mate?
could he not mate?
could we not mate?
could you not mate?
could they not mate? 	could I not be mating?
could you not be mating?
could he not be mating?
could we not be mating?
could you not be mating?
could they not be mating? 	could I not have mated?
could you not have mated?
could he not have mated?
could we not have mated?
could you not have mated?
could they not have mated? 	could I not have been mating?
could you not have been mating?
could he not have been mating?
could we not have been mating?
could you not have been mating?
could they not have been mating?