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 he 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 he 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 he 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 he 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 ought not to improve you ought not to improve he ought not to improve we ought not to improve you ought not to improve they ought not to improve	I ought not to improving you ought not to improving he ought not to improving we ought not to improving you ought not to improving they ought not to improving
Perfect	V-ing perfect
I ought not to have improved you ought not to have improved he ought not to have improved we ought not to have improved you ought not to have improved they ought not to have improved	I ought not to have been improving you ought not to have been improving he ought not to have been improving we ought not to have been improving you ought not to have been improving they ought not to have been improving

Interrogative form

Simple form	V-ing form
ought to I improve? ought to you improve? ought to he 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 he 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 he 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 he 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
ought I not to improve? ought you not to improve? ought he not to improve? ought we not to improve? ought you not to improve? ought they not to improve?	ought I not to be improving? ought you not to be improving? ought he not to be improving? ought we not to be improving? ought you not to be improving? ought they not to be improving?
Perfect	V-ing perfect
ought I not to have improved? ought you not to have improved? ought he not to have improved? ought we not to have improved? ought you not to have improved? ought they not to have improved?	ought I not to have been improving? ought you not to have been improving? ought he not to have been improving? ought we not to have been improving? ought you not to have been improving? ought they not to have been improving?