English verb conjugation
OUGHT TO THRESH

Regular verb: thresh - threshed - threshed

Affirmation

Simple form	V-ing form
I ought to thresh you ought to thresh she ought to thresh we ought to thresh you ought to thresh they ought to thresh	I ought to be threshing you ought to be threshing she ought to be threshing we ought to be threshing you ought to be threshing they ought to be threshing
Perfect	V-ing perfect
I ought to have threshed you ought to have threshed she ought to have threshed we ought to have threshed you ought to have threshed they ought to have threshed	I ought to have been threshing you ought to have been threshing she ought to have been threshing we ought to have been threshing you ought to have been threshing they ought to have been threshing

Negation

Simple form	V-ing form
I oughtn't to thresh you oughtn't to thresh she oughtn't to thresh we oughtn't to thresh you oughtn't to thresh they oughtn't to thresh	I oughtn't to be threshing you oughtn't to be threshing she oughtn't to be threshing we oughtn't to be threshing you oughtn't to be threshing they oughtn't to be threshing
Perfect	V-ing perfect
I oughtn't to have threshed you oughtn't to have threshed she oughtn't to have threshed we oughtn't to have threshed you oughtn't to have threshed they oughtn't to have threshed	I oughtn't to have been threshing you oughtn't to have been threshing she oughtn't to have been threshing we oughtn't to have been threshing you oughtn't to have been threshing they oughtn't to have been threshing

Interrogative form

Simple form	V-ing form
ought to I thresh? ought to you thresh? ought to she thresh? ought to we thresh? ought to you thresh? ought to they thresh?	ought to I be threshing? ought to you be threshing? ought to she be threshing? ought to we be threshing? ought to you be threshing? ought to they be threshing?
Perfect	V-ing perfect
ought to I have threshed? ought to you have threshed? ought to she have threshed? ought to we have threshed? ought to you have threshed? ought to they have threshed?	ought to I have been threshing? ought to you have been threshing? ought to she have been threshing? ought to we have been threshing? ought to you have been threshing? ought to they have been threshing?

Interro-negative form

Simple form	V-ing form
oughtn't I to thresh? oughtn't you to thresh? oughtn't she to thresh? oughtn't we to thresh? oughtn't you to thresh? oughtn't they to thresh?	oughtn't I to be threshing? oughtn't you to be threshing? oughtn't she to be threshing? oughtn't we to be threshing? oughtn't you to be threshing? oughtn't they to be threshing?
Perfect	V-ing perfect
oughtn't I to have threshed? oughtn't you to have threshed? oughtn't she to have threshed? oughtn't we to have threshed? oughtn't you to have threshed? oughtn't they to have threshed?	oughtn't I to have been threshing? oughtn't you to have been threshing? oughtn't she to have been threshing? oughtn't we to have been threshing? oughtn't you to have been threshing? oughtn't they to have been threshing?