I ought to avoid you ought to avoid he ought to avoid we ought to avoid you ought to avoid they ought to avoid
V-ing form
I ought to be avoiding you ought to be avoiding he ought to be avoiding we ought to be avoiding you ought to be avoiding they ought to be avoiding
Perfect
I ought to have avoided you ought to have avoided he ought to have avoided we ought to have avoided you ought to have avoided they ought to have avoided
V-ing perfect
I ought to have been avoiding you ought to have been avoiding he ought to have been avoiding we ought to have been avoiding you ought to have been avoiding they ought to have been avoiding
Negation
Simple form
I oughtn't to avoid you oughtn't to avoid he oughtn't to avoid we oughtn't to avoid you oughtn't to avoid they oughtn't to avoid
V-ing form
I oughtn't to be avoiding you oughtn't to be avoiding he oughtn't to be avoiding we oughtn't to be avoiding you oughtn't to be avoiding they oughtn't to be avoiding
Perfect
I oughtn't to have avoided you oughtn't to have avoided he oughtn't to have avoided we oughtn't to have avoided you oughtn't to have avoided they oughtn't to have avoided
V-ing perfect
I oughtn't to have been avoiding you oughtn't to have been avoiding he oughtn't to have been avoiding we oughtn't to have been avoiding you oughtn't to have been avoiding they oughtn't to have been avoiding
Interrogative form
Simple form
ought to I avoid? ought to you avoid? ought to he avoid? ought to we avoid? ought to you avoid? ought to they avoid?
V-ing form
ought to I be avoiding? ought to you be avoiding? ought to he be avoiding? ought to we be avoiding? ought to you be avoiding? ought to they be avoiding?
Perfect
ought to I have avoided? ought to you have avoided? ought to he have avoided? ought to we have avoided? ought to you have avoided? ought to they have avoided?
V-ing perfect
ought to I have been avoiding? ought to you have been avoiding? ought to he have been avoiding? ought to we have been avoiding? ought to you have been avoiding? ought to they have been avoiding?
Interro-negative form
Simple form
oughtn't I to avoid? oughtn't you to avoid? oughtn't he to avoid? oughtn't we to avoid? oughtn't you to avoid? oughtn't they to avoid?
V-ing form
oughtn't I to be avoiding? oughtn't you to be avoiding? oughtn't he to be avoiding? oughtn't we to be avoiding? oughtn't you to be avoiding? oughtn't they to be avoiding?
Perfect
oughtn't I to have avoided? oughtn't you to have avoided? oughtn't he to have avoided? oughtn't we to have avoided? oughtn't you to have avoided? oughtn't they to have avoided?
V-ing perfect
oughtn't I to have been avoiding? oughtn't you to have been avoiding? oughtn't he to have been avoiding? oughtn't we to have been avoiding? oughtn't you to have been avoiding? oughtn't they to have been avoiding?