I ought to weaken you ought to weaken she ought to weaken we ought to weaken you ought to weaken they ought to weaken
V-ing form
I ought to be weakening you ought to be weakening she ought to be weakening we ought to be weakening you ought to be weakening they ought to be weakening
Perfect
I ought to have weakened you ought to have weakened she ought to have weakened we ought to have weakened you ought to have weakened they ought to have weakened
V-ing perfect
I ought to have been weakening you ought to have been weakening she ought to have been weakening we ought to have been weakening you ought to have been weakening they ought to have been weakening
Negation
Simple form
I oughtn't to weaken you oughtn't to weaken she oughtn't to weaken we oughtn't to weaken you oughtn't to weaken they oughtn't to weaken
V-ing form
I oughtn't to be weakening you oughtn't to be weakening she oughtn't to be weakening we oughtn't to be weakening you oughtn't to be weakening they oughtn't to be weakening
Perfect
I oughtn't to have weakened you oughtn't to have weakened she oughtn't to have weakened we oughtn't to have weakened you oughtn't to have weakened they oughtn't to have weakened
V-ing perfect
I oughtn't to have been weakening you oughtn't to have been weakening she oughtn't to have been weakening we oughtn't to have been weakening you oughtn't to have been weakening they oughtn't to have been weakening
Interrogative form
Simple form
ought to I weaken? ought to you weaken? ought to she weaken? ought to we weaken? ought to you weaken? ought to they weaken?
V-ing form
ought to I be weakening? ought to you be weakening? ought to she be weakening? ought to we be weakening? ought to you be weakening? ought to they be weakening?
Perfect
ought to I have weakened? ought to you have weakened? ought to she have weakened? ought to we have weakened? ought to you have weakened? ought to they have weakened?
V-ing perfect
ought to I have been weakening? ought to you have been weakening? ought to she have been weakening? ought to we have been weakening? ought to you have been weakening? ought to they have been weakening?
Interro-negative form
Simple form
oughtn't I to weaken? oughtn't you to weaken? oughtn't she to weaken? oughtn't we to weaken? oughtn't you to weaken? oughtn't they to weaken?
V-ing form
oughtn't I to be weakening? oughtn't you to be weakening? oughtn't she to be weakening? oughtn't we to be weakening? oughtn't you to be weakening? oughtn't they to be weakening?
Perfect
oughtn't I to have weakened? oughtn't you to have weakened? oughtn't she to have weakened? oughtn't we to have weakened? oughtn't you to have weakened? oughtn't they to have weakened?
V-ing perfect
oughtn't I to have been weakening? oughtn't you to have been weakening? oughtn't she to have been weakening? oughtn't we to have been weakening? oughtn't you to have been weakening? oughtn't they to have been weakening?