could grate
Verbe régulier : grate - grated- grated
Traduction française : râper - grincer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could grate
you could grate
she could grate
we could grate
you could grate
they could grate 	I could be grating
you could be grating
she could be grating
we could be grating
you could be grating
they could be grating	I could have grated
you could have grated
she could have grated
we could have grated
you could have grated
they could have grated	I could have been grating
you could have been grating
she could have been grating
we could have been grating
you could have been grating
they could have been grating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not grate
you could not grate
she could not grate
we could not grate
you could not grate
they could not grate 	I could not be grating
you could not be grating
she could not be grating
we could not be grating
you could not be grating
they could not be grating	I could not have grated
you could not have grated
she could not have grated
we could not have grated
you could not have grated
they could not have grated	I could not have been grating
you could not have been grating
she could not have been grating
we could not have been grating
you could not have been grating
they could not have been grating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I grate?
could you grate?
could she grate?
could we grate?
could you grate?
could they grate? 	could I be grating?
could you be grating?
could she be grating?
could we be grating?
could you be grating?
could they be grating? 	could I have grated?
could you have grated?
could she have grated?
could we have grated?
could you have grated?
could they have grated? 	could I have been grating?
could you have been grating?
could she have been grating?
could we have been grating?
could you have been grating?
could they have been grating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not grate?
could you not grate?
could she not grate?
could we not grate?
could you not grate?
could they not grate? 	could I not be grating?
could you not be grating?
could she not be grating?
could we not be grating?
could you not be grating?
could they not be grating? 	could I not have grated?
could you not have grated?
could she not have grated?
could we not have grated?
could you not have grated?
could they not have grated? 	could I not have been grating?
could you not have been grating?
could she not have been grating?
could we not have been grating?
could you not have been grating?
could they not have been grating?