English verb conjugation
CAN INTERVENE

Regular verb: intervene - intervened - intervened

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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