I'll be intervening you'll be intervening he'll be intervening we'll be intervening you'll be intervening they'll be intervening
Perfect
I'll have intervened you'll have intervened he'll have intervened we'll have intervened you'll have intervened they'll have intervened
V-ing perfect
I'll have been intervening you'll have been intervening he'll have been intervening we'll have been intervening you'll have been intervening they'll have been intervening
Negation
Simple form
I shan't intervene you shan't intervene he shan't intervene we shan't intervene you shan't intervene they shan't intervene
V-ing form
I shan't be intervening you shan't be intervening he shan't be intervening we shan't be intervening you shan't be intervening they shan't be intervening
Perfect
I shan't have intervened you shan't have intervened he shan't have intervened we shan't have intervened you shan't have intervened they shan't have intervened
V-ing perfect
I shan't have been intervening you shan't have been intervening he shan't have been intervening we shan't have been intervening you shan't have been intervening they shan't have been intervening
Interrogative form
Simple form
shall I intervene? shall you intervene? shall he intervene? shall we intervene? shall you intervene? shall they intervene?
V-ing form
shall I be intervening? shall you be intervening? shall he be intervening? shall we be intervening? shall you be intervening? shall they be intervening?
Perfect
shall I have intervened? shall you have intervened? shall he have intervened? shall we have intervened? shall you have intervened? shall they have intervened?
V-ing perfect
shall I have been intervening? shall you have been intervening? shall he have been intervening? shall we have been intervening? shall you have been intervening? shall they have been intervening?
Interro-negative form
Simple form
shan't I intervene? shan't you intervene? shan't he intervene? shan't we intervene? shan't you intervene? shan't they intervene?
V-ing form
shan't I be intervening? shan't you be intervening? shan't he be intervening? shan't we be intervening? shan't you be intervening? shan't they be intervening?
Perfect
shan't I have intervened? shan't you have intervened? shan't he have intervened? shan't we have intervened? shan't you have intervened? shan't they have intervened?
V-ing perfect
shan't I have been intervening? shan't you have been intervening? shan't he have been intervening? shan't we have been intervening? shan't you have been intervening? shan't they have been intervening?