ought to persevere
Regular verb: persevere - persevered- persevered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to persevere
you ought to persevere
he ought to persevere
we ought to persevere
you ought to persevere
they ought to persevere 	I ought to be persevering
you ought to be persevering
he ought to be persevering
we ought to be persevering
you ought to be persevering
they ought to be persevering	I ought to have persevered
you ought to have persevered
he ought to have persevered
we ought to have persevered
you ought to have persevered
they ought to have persevered	I ought to have been persevering
you ought to have been persevering
he ought to have been persevering
we ought to have been persevering
you ought to have been persevering
they ought to have been persevering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to persevere
you ought not to persevere
he ought not to persevere
we ought not to persevere
you ought not to persevere
they ought not to persevere 	I ought not to persevering
you ought not to persevering
he ought not to persevering
we ought not to persevering
you ought not to persevering
they ought not to persevering	I ought not to have persevered
you ought not to have persevered
he ought not to have persevered
we ought not to have persevered
you ought not to have persevered
they ought not to have persevered	I ought not to have been persevering
you ought not to have been persevering
he ought not to have been persevering
we ought not to have been persevering
you ought not to have been persevering
they ought not to have been persevering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I persevere?
ought to you persevere?
ought to he persevere?
ought to we persevere?
ought to you persevere?
ought to they persevere? 	ought to I be persevering?
ought to you be persevering?
ought to he be persevering?
ought to we be persevering?
ought to you be persevering?
ought to they be persevering? 	ought to I have persevered?
ought to you have persevered?
ought to he have persevered?
ought to we have persevered?
ought to you have persevered?
ought to they have persevered? 	ought to I have been persevering?
ought to you have been persevering?
ought to he have been persevering?
ought to we have been persevering?
ought to you have been persevering?
ought to they have been persevering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to persevere?
ought you not to persevere?
ought he not to persevere?
ought we not to persevere?
ought you not to persevere?
ought they not to persevere? 	ought I not to be persevering?
ought you not to be persevering?
ought he not to be persevering?
ought we not to be persevering?
ought you not to be persevering?
ought they not to be persevering? 	ought I not to have persevered?
ought you not to have persevered?
ought he not to have persevered?
ought we not to have persevered?
ought you not to have persevered?
ought they not to have persevered? 	ought I not to have been persevering?
ought you not to have been persevering?
ought he not to have been persevering?
ought we not to have been persevering?
ought you not to have been persevering?
ought they not to have been persevering?