ought to improve
Regular verb: improve - improved- improved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?