ought to grate
Regular verb: grate - grated- grated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to grate
you ought to grate
he ought to grate
we ought to grate
you ought to grate
they ought to grate 	I ought to be grating
you ought to be grating
he ought to be grating
we ought to be grating
you ought to be grating
they ought to be grating	I ought to have grated
you ought to have grated
he ought to have grated
we ought to have grated
you ought to have grated
they ought to have grated	I ought to have been grating
you ought to have been grating
he ought to have been grating
we ought to have been grating
you ought to have been grating
they ought to have been grating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to grate
you ought not to grate
he ought not to grate
we ought not to grate
you ought not to grate
they ought not to grate 	I ought not to grating
you ought not to grating
he ought not to grating
we ought not to grating
you ought not to grating
they ought not to grating	I ought not to have grated
you ought not to have grated
he ought not to have grated
we ought not to have grated
you ought not to have grated
they ought not to have grated	I ought not to have been grating
you ought not to have been grating
he ought not to have been grating
we ought not to have been grating
you ought not to have been grating
they ought not to have been grating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I grate?
ought to you grate?
ought to he grate?
ought to we grate?
ought to you grate?
ought to they grate? 	ought to I be grating?
ought to you be grating?
ought to he be grating?
ought to we be grating?
ought to you be grating?
ought to they be grating? 	ought to I have grated?
ought to you have grated?
ought to he have grated?
ought to we have grated?
ought to you have grated?
ought to they have grated? 	ought to I have been grating?
ought to you have been grating?
ought to he have been grating?
ought to we have been grating?
ought to you have been grating?
ought to they have been grating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to grate?
ought you not to grate?
ought he not to grate?
ought we not to grate?
ought you not to grate?
ought they not to grate? 	ought I not to be grating?
ought you not to be grating?
ought he not to be grating?
ought we not to be grating?
ought you not to be grating?
ought they not to be grating? 	ought I not to have grated?
ought you not to have grated?
ought he not to have grated?
ought we not to have grated?
ought you not to have grated?
ought they not to have grated? 	ought I not to have been grating?
ought you not to have been grating?
ought he not to have been grating?
ought we not to have been grating?
ought you not to have been grating?
ought they not to have been grating?