could activate
Verbo regular: activate - activated- activated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could activate
you could activate
he could activate
we could activate
you could activate
they could activate 	I could be activating
you could be activating
he could be activating
we could be activating
you could be activating
they could be activating	I could have activated
you could have activated
he could have activated
we could have activated
you could have activated
they could have activated	I could have been activating
you could have been activating
he could have been activating
we could have been activating
you could have been activating
they could have been activating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not activate
you could not activate
he could not activate
we could not activate
you could not activate
they could not activate 	I could not be activating
you could not be activating
he could not be activating
we could not be activating
you could not be activating
they could not be activating	I could not have activated
you could not have activated
he could not have activated
we could not have activated
you could not have activated
they could not have activated	I could not have been activating
you could not have been activating
he could not have been activating
we could not have been activating
you could not have been activating
they could not have been activating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I activate?
could you activate?
could he activate?
could we activate?
could you activate?
could they activate? 	could I be activating?
could you be activating?
could he be activating?
could we be activating?
could you be activating?
could they be activating? 	could I have activated?
could you have activated?
could he have activated?
could we have activated?
could you have activated?
could they have activated? 	could I have been activating?
could you have been activating?
could he have been activating?
could we have been activating?
could you have been activating?
could they have been activating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not activate?
could you not activate?
could he not activate?
could we not activate?
could you not activate?
could they not activate? 	could I not be activating?
could you not be activating?
could he not be activating?
could we not be activating?
could you not be activating?
could they not be activating? 	could I not have activated?
could you not have activated?
could he not have activated?
could we not have activated?
could you not have activated?
could they not have activated? 	could I not have been activating?
could you not have been activating?
could he not have been activating?
could we not have been activating?
could you not have been activating?
could they not have been activating?