ought to sketch
Regular verb: sketch - sketched- sketched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to sketch
you ought to sketch
he ought to sketch
we ought to sketch
you ought to sketch
they ought to sketch 	I ought to be sketching
you ought to be sketching
he ought to be sketching
we ought to be sketching
you ought to be sketching
they ought to be sketching	I ought to have sketched
you ought to have sketched
he ought to have sketched
we ought to have sketched
you ought to have sketched
they ought to have sketched	I ought to have been sketching
you ought to have been sketching
he ought to have been sketching
we ought to have been sketching
you ought to have been sketching
they ought to have been sketching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to sketch
you oughtn't to sketch
he oughtn't to sketch
we oughtn't to sketch
you oughtn't to sketch
they oughtn't to sketch 	I oughtn't to be sketching
you oughtn't to be sketching
he oughtn't to be sketching
we oughtn't to be sketching
you oughtn't to be sketching
they oughtn't to be sketching	I oughtn't to have sketched
you oughtn't to have sketched
he oughtn't to have sketched
we oughtn't to have sketched
you oughtn't to have sketched
they oughtn't to have sketched	I oughtn't to have been sketching
you oughtn't to have been sketching
he oughtn't to have been sketching
we oughtn't to have been sketching
you oughtn't to have been sketching
they oughtn't to have been sketching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I sketch?
ought to you sketch?
ought to he sketch?
ought to we sketch?
ought to you sketch?
ought to they sketch? 	ought to I be sketching?
ought to you be sketching?
ought to he be sketching?
ought to we be sketching?
ought to you be sketching?
ought to they be sketching? 	ought to I have sketched?
ought to you have sketched?
ought to he have sketched?
ought to we have sketched?
ought to you have sketched?
ought to they have sketched? 	ought to I have been sketching?
ought to you have been sketching?
ought to he have been sketching?
ought to we have been sketching?
ought to you have been sketching?
ought to they have been sketching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to sketch?
oughtn't you to sketch?
oughtn't he to sketch?
oughtn't we to sketch?
oughtn't you to sketch?
oughtn't they to sketch? 	oughtn't I to be sketching?
oughtn't you to be sketching?
oughtn't he to be sketching?
oughtn't we to be sketching?
oughtn't you to be sketching?
oughtn't they to be sketching? 	oughtn't I to have sketched?
oughtn't you to have sketched?
oughtn't he to have sketched?
oughtn't we to have sketched?
oughtn't you to have sketched?
oughtn't they to have sketched? 	oughtn't I to have been sketching?
oughtn't you to have been sketching?
oughtn't he to have been sketching?
oughtn't we to have been sketching?
oughtn't you to have been sketching?
oughtn't they to have been sketching?