can green
Verbo regular: green - greened- greened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can green
you can green
he can green
we can green
you can green
they can green 	I can be greening
you can be greening
he can be greening
we can be greening
you can be greening
they can be greening	I can have greened
you can have greened
he can have greened
we can have greened
you can have greened
they can have greened	I can have been greening
you can have been greening
he can have been greening
we can have been greening
you can have been greening
they can have been greening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot green
you cannot green
he cannot green
we cannot green
you cannot green
they cannot green 	I cannot be greening
you cannot be greening
he cannot be greening
we cannot be greening
you cannot be greening
they cannot be greening	I cannot have greened
you cannot have greened
he cannot have greened
we cannot have greened
you cannot have greened
they cannot have greened	I cannot have been greening
you cannot have been greening
he cannot have been greening
we cannot have been greening
you cannot have been greening
they cannot have been greening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I green?
can you green?
can he green?
can we green?
can you green?
can they green? 	can I be greening?
can you be greening?
can he be greening?
can we be greening?
can you be greening?
can they be greening? 	can I have greened?
can you have greened?
can he have greened?
can we have greened?
can you have greened?
can they have greened? 	can I have been greening?
can you have been greening?
can he have been greening?
can we have been greening?
can you have been greening?
can they have been greening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not green?
can you not green?
can he not green?
can we not green?
can you not green?
can they not green? 	can I not be greening?
can you not be greening?
can he not be greening?
can we not be greening?
can you not be greening?
can they not be greening? 	can I not have greened?
can you not have greened?
can he not have greened?
can we not have greened?
can you not have greened?
can they not have greened? 	can I not have been greening?
can you not have been greening?
can he not have been greening?
can we not have been greening?
can you not have been greening?
can they not have been greening?