I can engage you can engage he can engage we can engage you can engage they can engage
V-ing form
I can be engaging you can be engaging he can be engaging we can be engaging you can be engaging they can be engaging
Perfect
I can have engaged you can have engaged he can have engaged we can have engaged you can have engaged they can have engaged
V-ing perfect
I can have been engaging you can have been engaging he can have been engaging we can have been engaging you can have been engaging they can have been engaging
Negation
Simple form
I can't engage you can't engage he can't engage we can't engage you can't engage they can't engage
V-ing form
I can't be engaging you can't be engaging he can't be engaging we can't be engaging you can't be engaging they can't be engaging
Perfect
I can't have engaged you can't have engaged he can't have engaged we can't have engaged you can't have engaged they can't have engaged
V-ing perfect
I can't have been engaging you can't have been engaging he can't have been engaging we can't have been engaging you can't have been engaging they can't have been engaging
Interrogative form
Simple form
can I engage? can you engage? can he engage? can we engage? can you engage? can they engage?
V-ing form
can I be engaging? can you be engaging? can he be engaging? can we be engaging? can you be engaging? can they be engaging?
Perfect
can I have engaged? can you have engaged? can he have engaged? can we have engaged? can you have engaged? can they have engaged?
V-ing perfect
can I have been engaging? can you have been engaging? can he have been engaging? can we have been engaging? can you have been engaging? can they have been engaging?
Interro-negative form
Simple form
can't I engage? can't you engage? can't he engage? can't we engage? can't you engage? can't they engage?
V-ing form
can't I be engaging? can't you be engaging? can't he be engaging? can't we be engaging? can't you be engaging? can't they be engaging?
Perfect
can't I have engaged? can't you have engaged? can't he have engaged? can't we have engaged? can't you have engaged? can't they have engaged?
V-ing perfect
can't I have been engaging? can't you have been engaging? can't he have been engaging? can't we have been engaging? can't you have been engaging? can't they have been engaging?