ought to prepare
Regular verb: prepare - prepared- prepared

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to prepare
you ought to prepare
she ought to prepare
we ought to prepare
you ought to prepare
they ought to prepare 	I ought to be preparing
you ought to be preparing
she ought to be preparing
we ought to be preparing
you ought to be preparing
they ought to be preparing	I ought to have prepared
you ought to have prepared
she ought to have prepared
we ought to have prepared
you ought to have prepared
they ought to have prepared	I ought to have been preparing
you ought to have been preparing
she ought to have been preparing
we ought to have been preparing
you ought to have been preparing
they ought to have been preparing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to prepare
you oughtn't to prepare
she oughtn't to prepare
we oughtn't to prepare
you oughtn't to prepare
they oughtn't to prepare 	I oughtn't to be preparing
you oughtn't to be preparing
she oughtn't to be preparing
we oughtn't to be preparing
you oughtn't to be preparing
they oughtn't to be preparing	I oughtn't to have prepared
you oughtn't to have prepared
she oughtn't to have prepared
we oughtn't to have prepared
you oughtn't to have prepared
they oughtn't to have prepared	I oughtn't to have been preparing
you oughtn't to have been preparing
she oughtn't to have been preparing
we oughtn't to have been preparing
you oughtn't to have been preparing
they oughtn't to have been preparing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I prepare?
ought to you prepare?
ought to she prepare?
ought to we prepare?
ought to you prepare?
ought to they prepare? 	ought to I be preparing?
ought to you be preparing?
ought to she be preparing?
ought to we be preparing?
ought to you be preparing?
ought to they be preparing? 	ought to I have prepared?
ought to you have prepared?
ought to she have prepared?
ought to we have prepared?
ought to you have prepared?
ought to they have prepared? 	ought to I have been preparing?
ought to you have been preparing?
ought to she have been preparing?
ought to we have been preparing?
ought to you have been preparing?
ought to they have been preparing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to prepare?
oughtn't you to prepare?
oughtn't she to prepare?
oughtn't we to prepare?
oughtn't you to prepare?
oughtn't they to prepare? 	oughtn't I to be preparing?
oughtn't you to be preparing?
oughtn't she to be preparing?
oughtn't we to be preparing?
oughtn't you to be preparing?
oughtn't they to be preparing? 	oughtn't I to have prepared?
oughtn't you to have prepared?
oughtn't she to have prepared?
oughtn't we to have prepared?
oughtn't you to have prepared?
oughtn't they to have prepared? 	oughtn't I to have been preparing?
oughtn't you to have been preparing?
oughtn't she to have been preparing?
oughtn't we to have been preparing?
oughtn't you to have been preparing?
oughtn't they to have been preparing?