English verb conjugation
MAY INTERVENE

Regular verb: intervene - intervened - intervened

Affirmation

Simple form	V-ing form
I may intervene you may intervene he may intervene we may intervene you may intervene they may intervene	I may be intervening you may be intervening he may be intervening we may be intervening you may be intervening they may be intervening
Perfect	V-ing perfect
I may have intervened you may have intervened he may have intervened we may have intervened you may have intervened they may have intervened	I may have been intervening you may have been intervening he may have been intervening we may have been intervening you may have been intervening they may have been intervening

Negation

Simple form	V-ing form
I mayn't intervene you mayn't intervene he mayn't intervene we mayn't intervene you mayn't intervene they mayn't intervene	I mayn't be intervening you mayn't be intervening he mayn't be intervening we mayn't be intervening you mayn't be intervening they mayn't be intervening
Perfect	V-ing perfect
I mayn't have intervened you mayn't have intervened he mayn't have intervened we mayn't have intervened you mayn't have intervened they mayn't have intervened	I mayn't have been intervening you mayn't have been intervening he mayn't have been intervening we mayn't have been intervening you mayn't have been intervening they mayn't have been intervening

Interrogative form

Simple form	V-ing form
may I intervene? may you intervene? may he intervene? may we intervene? may you intervene? may they intervene?	may I be intervening? may you be intervening? may he be intervening? may we be intervening? may you be intervening? may they be intervening?
Perfect	V-ing perfect
may I have intervened? may you have intervened? may he have intervened? may we have intervened? may you have intervened? may they have intervened?	may I have been intervening? may you have been intervening? may he have been intervening? may we have been intervening? may you have been intervening? may they have been intervening?

Interro-negative form

Simple form	V-ing form
mayn't I intervene? mayn't you intervene? mayn't he intervene? mayn't we intervene? mayn't you intervene? mayn't they intervene?	mayn't I be intervening? mayn't you be intervening? mayn't he be intervening? mayn't we be intervening? mayn't you be intervening? mayn't they be intervening?
Perfect	V-ing perfect
mayn't I have intervened? mayn't you have intervened? mayn't he have intervened? mayn't we have intervened? mayn't you have intervened? mayn't they have intervened?	mayn't I have been intervening? mayn't you have been intervening? mayn't he have been intervening? mayn't we have been intervening? mayn't you have been intervening? mayn't they have been intervening?