ought to study
Regular verb: study - studied- studied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to study
you ought to study
he ought to study
we ought to study
you ought to study
they ought to study 	I ought to be studying
you ought to be studying
he ought to be studying
we ought to be studying
you ought to be studying
they ought to be studying	I ought to have studied
you ought to have studied
he ought to have studied
we ought to have studied
you ought to have studied
they ought to have studied	I ought to have been studying
you ought to have been studying
he ought to have been studying
we ought to have been studying
you ought to have been studying
they ought to have been studying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to study
you oughtn't to study
he oughtn't to study
we oughtn't to study
you oughtn't to study
they oughtn't to study 	I oughtn't to be studying
you oughtn't to be studying
he oughtn't to be studying
we oughtn't to be studying
you oughtn't to be studying
they oughtn't to be studying	I oughtn't to have studied
you oughtn't to have studied
he oughtn't to have studied
we oughtn't to have studied
you oughtn't to have studied
they oughtn't to have studied	I oughtn't to have been studying
you oughtn't to have been studying
he oughtn't to have been studying
we oughtn't to have been studying
you oughtn't to have been studying
they oughtn't to have been studying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I study?
ought to you study?
ought to he study?
ought to we study?
ought to you study?
ought to they study? 	ought to I be studying?
ought to you be studying?
ought to he be studying?
ought to we be studying?
ought to you be studying?
ought to they be studying? 	ought to I have studied?
ought to you have studied?
ought to he have studied?
ought to we have studied?
ought to you have studied?
ought to they have studied? 	ought to I have been studying?
ought to you have been studying?
ought to he have been studying?
ought to we have been studying?
ought to you have been studying?
ought to they have been studying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to study?
oughtn't you to study?
oughtn't he to study?
oughtn't we to study?
oughtn't you to study?
oughtn't they to study? 	oughtn't I to be studying?
oughtn't you to be studying?
oughtn't he to be studying?
oughtn't we to be studying?
oughtn't you to be studying?
oughtn't they to be studying? 	oughtn't I to have studied?
oughtn't you to have studied?
oughtn't he to have studied?
oughtn't we to have studied?
oughtn't you to have studied?
oughtn't they to have studied? 	oughtn't I to have been studying?
oughtn't you to have been studying?
oughtn't he to have been studying?
oughtn't we to have been studying?
oughtn't you to have been studying?
oughtn't they to have been studying?