can grate
Verbo regular: grate - grated- grated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can grate
you can grate
he can grate
we can grate
you can grate
they can grate 	I can be grating
you can be grating
he can be grating
we can be grating
you can be grating
they can be grating	I can have grated
you can have grated
he can have grated
we can have grated
you can have grated
they can have grated	I can have been grating
you can have been grating
he can have been grating
we can have been grating
you can have been grating
they can have been grating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot grate
you cannot grate
he cannot grate
we cannot grate
you cannot grate
they cannot grate 	I cannot be grating
you cannot be grating
he cannot be grating
we cannot be grating
you cannot be grating
they cannot be grating	I cannot have grated
you cannot have grated
he cannot have grated
we cannot have grated
you cannot have grated
they cannot have grated	I cannot have been grating
you cannot have been grating
he cannot have been grating
we cannot have been grating
you cannot have been grating
they cannot have been grating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I grate?
can you grate?
can he grate?
can we grate?
can you grate?
can they grate? 	can I be grating?
can you be grating?
can he be grating?
can we be grating?
can you be grating?
can they be grating? 	can I have grated?
can you have grated?
can he have grated?
can we have grated?
can you have grated?
can they have grated? 	can I have been grating?
can you have been grating?
can he have been grating?
can we have been grating?
can you have been grating?
can they have been grating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not grate?
can you not grate?
can he not grate?
can we not grate?
can you not grate?
can they not grate? 	can I not be grating?
can you not be grating?
can he not be grating?
can we not be grating?
can you not be grating?
can they not be grating? 	can I not have grated?
can you not have grated?
can he not have grated?
can we not have grated?
can you not have grated?
can they not have grated? 	can I not have been grating?
can you not have been grating?
can he not have been grating?
can we not have been grating?
can you not have been grating?
can they not have been grating?