English verb conjugation
OUGHT TO IMPROVE

Regular verb: improve - improved - improved

Affirmation

Simple form	V-ing form
I ought to improve you ought to improve she ought to improve we ought to improve you ought to improve they ought to improve	I ought to be improving you ought to be improving she ought to be improving we ought to be improving you ought to be improving they ought to be improving
Perfect	V-ing perfect
I ought to have improved you ought to have improved she ought to have improved we ought to have improved you ought to have improved they ought to have improved	I ought to have been improving you ought to have been improving she ought to have been improving we ought to have been improving you ought to have been improving they ought to have been improving

Negation

Simple form	V-ing form
I oughtn't to improve you oughtn't to improve she oughtn't to improve we oughtn't to improve you oughtn't to improve they oughtn't to improve	I oughtn't to be improving you oughtn't to be improving she oughtn't to be improving we oughtn't to be improving you oughtn't to be improving they oughtn't to be improving
Perfect	V-ing perfect
I oughtn't to have improved you oughtn't to have improved she oughtn't to have improved we oughtn't to have improved you oughtn't to have improved they oughtn't to have improved	I oughtn't to have been improving you oughtn't to have been improving she oughtn't to have been improving we oughtn't to have been improving you oughtn't to have been improving they oughtn't to have been improving

Interrogative form

Simple form	V-ing form
ought to I improve? ought to you improve? ought to she improve? ought to we improve? ought to you improve? ought to they improve?	ought to I be improving? ought to you be improving? ought to she be improving? ought to we be improving? ought to you be improving? ought to they be improving?
Perfect	V-ing perfect
ought to I have improved? ought to you have improved? ought to she have improved? ought to we have improved? ought to you have improved? ought to they have improved?	ought to I have been improving? ought to you have been improving? ought to she have been improving? ought to we have been improving? ought to you have been improving? ought to they have been improving?

Interro-negative form

Simple form	V-ing form
oughtn't I to improve? oughtn't you to improve? oughtn't she to improve? oughtn't we to improve? oughtn't you to improve? oughtn't they to improve?	oughtn't I to be improving? oughtn't you to be improving? oughtn't she to be improving? oughtn't we to be improving? oughtn't you to be improving? oughtn't they to be improving?
Perfect	V-ing perfect
oughtn't I to have improved? oughtn't you to have improved? oughtn't she to have improved? oughtn't we to have improved? oughtn't you to have improved? oughtn't they to have improved?	oughtn't I to have been improving? oughtn't you to have been improving? oughtn't she to have been improving? oughtn't we to have been improving? oughtn't you to have been improving? oughtn't they to have been improving?