ought to refuel
Verbo regular: refuel - refuelled- refuelled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought to refuel
you ought to refuel
he ought to refuel
we ought to refuel
you ought to refuel
they ought to refuel 	I ought to be refuelling
you ought to be refuelling
he ought to be refuelling
we ought to be refuelling
you ought to be refuelling
they ought to be refuelling	I ought to have refuelled
you ought to have refuelled
he ought to have refuelled
we ought to have refuelled
you ought to have refuelled
they ought to have refuelled	I ought to have been refuelling
you ought to have been refuelling
he ought to have been refuelling
we ought to have been refuelling
you ought to have been refuelling
they ought to have been refuelling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I oughtn't to refuel
you oughtn't to refuel
he oughtn't to refuel
we oughtn't to refuel
you oughtn't to refuel
they oughtn't to refuel 	I oughtn't to be refuelling
you oughtn't to be refuelling
he oughtn't to be refuelling
we oughtn't to be refuelling
you oughtn't to be refuelling
they oughtn't to be refuelling	I oughtn't to have refuelled
you oughtn't to have refuelled
he oughtn't to have refuelled
we oughtn't to have refuelled
you oughtn't to have refuelled
they oughtn't to have refuelled	I oughtn't to have been refuelling
you oughtn't to have been refuelling
he oughtn't to have been refuelling
we oughtn't to have been refuelling
you oughtn't to have been refuelling
they oughtn't to have been refuelling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought to I refuel?
ought to you refuel?
ought to he refuel?
ought to we refuel?
ought to you refuel?
ought to they refuel? 	ought to I be refuelling?
ought to you be refuelling?
ought to he be refuelling?
ought to we be refuelling?
ought to you be refuelling?
ought to they be refuelling? 	ought to I have refuelled?
ought to you have refuelled?
ought to he have refuelled?
ought to we have refuelled?
ought to you have refuelled?
ought to they have refuelled? 	ought to I have been refuelling?
ought to you have been refuelling?
ought to he have been refuelling?
ought to we have been refuelling?
ought to you have been refuelling?
ought to they have been refuelling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
oughtn't I to refuel?
oughtn't you to refuel?
oughtn't he to refuel?
oughtn't we to refuel?
oughtn't you to refuel?
oughtn't they to refuel? 	oughtn't I to be refuelling?
oughtn't you to be refuelling?
oughtn't he to be refuelling?
oughtn't we to be refuelling?
oughtn't you to be refuelling?
oughtn't they to be refuelling? 	oughtn't I to have refuelled?
oughtn't you to have refuelled?
oughtn't he to have refuelled?
oughtn't we to have refuelled?
oughtn't you to have refuelled?
oughtn't they to have refuelled? 	oughtn't I to have been refuelling?
oughtn't you to have been refuelling?
oughtn't he to have been refuelling?
oughtn't we to have been refuelling?
oughtn't you to have been refuelling?
oughtn't they to have been refuelling?