ought to retard
Regular verb: retard - retarded- retarded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to retard
you ought to retard
he ought to retard
we ought to retard
you ought to retard
they ought to retard 	I ought to be retarding
you ought to be retarding
he ought to be retarding
we ought to be retarding
you ought to be retarding
they ought to be retarding	I ought to have retarded
you ought to have retarded
he ought to have retarded
we ought to have retarded
you ought to have retarded
they ought to have retarded	I ought to have been retarding
you ought to have been retarding
he ought to have been retarding
we ought to have been retarding
you ought to have been retarding
they ought to have been retarding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to retard
you oughtn't to retard
he oughtn't to retard
we oughtn't to retard
you oughtn't to retard
they oughtn't to retard 	I oughtn't to be retarding
you oughtn't to be retarding
he oughtn't to be retarding
we oughtn't to be retarding
you oughtn't to be retarding
they oughtn't to be retarding	I oughtn't to have retarded
you oughtn't to have retarded
he oughtn't to have retarded
we oughtn't to have retarded
you oughtn't to have retarded
they oughtn't to have retarded	I oughtn't to have been retarding
you oughtn't to have been retarding
he oughtn't to have been retarding
we oughtn't to have been retarding
you oughtn't to have been retarding
they oughtn't to have been retarding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I retard?
ought to you retard?
ought to he retard?
ought to we retard?
ought to you retard?
ought to they retard? 	ought to I be retarding?
ought to you be retarding?
ought to he be retarding?
ought to we be retarding?
ought to you be retarding?
ought to they be retarding? 	ought to I have retarded?
ought to you have retarded?
ought to he have retarded?
ought to we have retarded?
ought to you have retarded?
ought to they have retarded? 	ought to I have been retarding?
ought to you have been retarding?
ought to he have been retarding?
ought to we have been retarding?
ought to you have been retarding?
ought to they have been retarding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to retard?
oughtn't you to retard?
oughtn't he to retard?
oughtn't we to retard?
oughtn't you to retard?
oughtn't they to retard? 	oughtn't I to be retarding?
oughtn't you to be retarding?
oughtn't he to be retarding?
oughtn't we to be retarding?
oughtn't you to be retarding?
oughtn't they to be retarding? 	oughtn't I to have retarded?
oughtn't you to have retarded?
oughtn't he to have retarded?
oughtn't we to have retarded?
oughtn't you to have retarded?
oughtn't they to have retarded? 	oughtn't I to have been retarding?
oughtn't you to have been retarding?
oughtn't he to have been retarding?
oughtn't we to have been retarding?
oughtn't you to have been retarding?
oughtn't they to have been retarding?