I ought to investigate you ought to investigate he ought to investigate we ought to investigate you ought to investigate they ought to investigate
V-ing form
I ought to be investigating you ought to be investigating he ought to be investigating we ought to be investigating you ought to be investigating they ought to be investigating
Perfect
I ought to have investigated you ought to have investigated he ought to have investigated we ought to have investigated you ought to have investigated they ought to have investigated
V-ing perfect
I ought to have been investigating you ought to have been investigating he ought to have been investigating we ought to have been investigating you ought to have been investigating they ought to have been investigating
Negation
Simple form
I ought not to investigate you ought not to investigate he ought not to investigate we ought not to investigate you ought not to investigate they ought not to investigate
V-ing form
I ought not to investigating you ought not to investigating he ought not to investigating we ought not to investigating you ought not to investigating they ought not to investigating
Perfect
I ought not to have investigated you ought not to have investigated he ought not to have investigated we ought not to have investigated you ought not to have investigated they ought not to have investigated
V-ing perfect
I ought not to have been investigating you ought not to have been investigating he ought not to have been investigating we ought not to have been investigating you ought not to have been investigating they ought not to have been investigating
Interrogative form
Simple form
ought to I investigate? ought to you investigate? ought to he investigate? ought to we investigate? ought to you investigate? ought to they investigate?
V-ing form
ought to I be investigating? ought to you be investigating? ought to he be investigating? ought to we be investigating? ought to you be investigating? ought to they be investigating?
Perfect
ought to I have investigated? ought to you have investigated? ought to he have investigated? ought to we have investigated? ought to you have investigated? ought to they have investigated?
V-ing perfect
ought to I have been investigating? ought to you have been investigating? ought to he have been investigating? ought to we have been investigating? ought to you have been investigating? ought to they have been investigating?
Interro-negative form
Simple form
ought I not to investigate? ought you not to investigate? ought he not to investigate? ought we not to investigate? ought you not to investigate? ought they not to investigate?
V-ing form
ought I not to be investigating? ought you not to be investigating? ought he not to be investigating? ought we not to be investigating? ought you not to be investigating? ought they not to be investigating?
Perfect
ought I not to have investigated? ought you not to have investigated? ought he not to have investigated? ought we not to have investigated? ought you not to have investigated? ought they not to have investigated?
V-ing perfect
ought I not to have been investigating? ought you not to have been investigating? ought he not to have been investigating? ought we not to have been investigating? ought you not to have been investigating? ought they not to have been investigating?