English verb conjugation
OUGHT TO ROOF

Regular verb: roof - roofed - roofed

Affirmation

Simple form	V-ing form
I ought to roof you ought to roof he ought to roof we ought to roof you ought to roof they ought to roof	I ought to be roofing you ought to be roofing he ought to be roofing we ought to be roofing you ought to be roofing they ought to be roofing
Perfect	V-ing perfect
I ought to have roofed you ought to have roofed he ought to have roofed we ought to have roofed you ought to have roofed they ought to have roofed	I ought to have been roofing you ought to have been roofing he ought to have been roofing we ought to have been roofing you ought to have been roofing they ought to have been roofing

Negation

Simple form	V-ing form
I ought not to roof you ought not to roof he ought not to roof we ought not to roof you ought not to roof they ought not to roof	I ought not to roofing you ought not to roofing he ought not to roofing we ought not to roofing you ought not to roofing they ought not to roofing
Perfect	V-ing perfect
I ought not to have roofed you ought not to have roofed he ought not to have roofed we ought not to have roofed you ought not to have roofed they ought not to have roofed	I ought not to have been roofing you ought not to have been roofing he ought not to have been roofing we ought not to have been roofing you ought not to have been roofing they ought not to have been roofing

Interrogative form

Simple form	V-ing form
ought to I roof? ought to you roof? ought to he roof? ought to we roof? ought to you roof? ought to they roof?	ought to I be roofing? ought to you be roofing? ought to he be roofing? ought to we be roofing? ought to you be roofing? ought to they be roofing?
Perfect	V-ing perfect
ought to I have roofed? ought to you have roofed? ought to he have roofed? ought to we have roofed? ought to you have roofed? ought to they have roofed?	ought to I have been roofing? ought to you have been roofing? ought to he have been roofing? ought to we have been roofing? ought to you have been roofing? ought to they have been roofing?

Interro-negative form

Simple form	V-ing form
ought I not to roof? ought you not to roof? ought he not to roof? ought we not to roof? ought you not to roof? ought they not to roof?	ought I not to be roofing? ought you not to be roofing? ought he not to be roofing? ought we not to be roofing? ought you not to be roofing? ought they not to be roofing?
Perfect	V-ing perfect
ought I not to have roofed? ought you not to have roofed? ought he not to have roofed? ought we not to have roofed? ought you not to have roofed? ought they not to have roofed?	ought I not to have been roofing? ought you not to have been roofing? ought he not to have been roofing? ought we not to have been roofing? ought you not to have been roofing? ought they not to have been roofing?