English verb conjugation
OUGHT TO SKIM

Regular verb: skim - skimmed - skimmed

Affirmation

Simple form	V-ing form
I ought to skim you ought to skim he ought to skim we ought to skim you ought to skim they ought to skim	I ought to be skimming you ought to be skimming he ought to be skimming we ought to be skimming you ought to be skimming they ought to be skimming
Perfect	V-ing perfect
I ought to have skimmed you ought to have skimmed he ought to have skimmed we ought to have skimmed you ought to have skimmed they ought to have skimmed	I ought to have been skimming you ought to have been skimming he ought to have been skimming we ought to have been skimming you ought to have been skimming they ought to have been skimming

Negation

Simple form	V-ing form
I oughtn't to skim you oughtn't to skim he oughtn't to skim we oughtn't to skim you oughtn't to skim they oughtn't to skim	I oughtn't to be skimming you oughtn't to be skimming he oughtn't to be skimming we oughtn't to be skimming you oughtn't to be skimming they oughtn't to be skimming
Perfect	V-ing perfect
I oughtn't to have skimmed you oughtn't to have skimmed he oughtn't to have skimmed we oughtn't to have skimmed you oughtn't to have skimmed they oughtn't to have skimmed	I oughtn't to have been skimming you oughtn't to have been skimming he oughtn't to have been skimming we oughtn't to have been skimming you oughtn't to have been skimming they oughtn't to have been skimming

Interrogative form

Simple form	V-ing form
ought to I skim? ought to you skim? ought to he skim? ought to we skim? ought to you skim? ought to they skim?	ought to I be skimming? ought to you be skimming? ought to he be skimming? ought to we be skimming? ought to you be skimming? ought to they be skimming?
Perfect	V-ing perfect
ought to I have skimmed? ought to you have skimmed? ought to he have skimmed? ought to we have skimmed? ought to you have skimmed? ought to they have skimmed?	ought to I have been skimming? ought to you have been skimming? ought to he have been skimming? ought to we have been skimming? ought to you have been skimming? ought to they have been skimming?

Interro-negative form

Simple form	V-ing form
oughtn't I to skim? oughtn't you to skim? oughtn't he to skim? oughtn't we to skim? oughtn't you to skim? oughtn't they to skim?	oughtn't I to be skimming? oughtn't you to be skimming? oughtn't he to be skimming? oughtn't we to be skimming? oughtn't you to be skimming? oughtn't they to be skimming?
Perfect	V-ing perfect
oughtn't I to have skimmed? oughtn't you to have skimmed? oughtn't he to have skimmed? oughtn't we to have skimmed? oughtn't you to have skimmed? oughtn't they to have skimmed?	oughtn't I to have been skimming? oughtn't you to have been skimming? oughtn't he to have been skimming? oughtn't we to have been skimming? oughtn't you to have been skimming? oughtn't they to have been skimming?