I can parachute you can parachute he can parachute we can parachute you can parachute they can parachute
V-ing form
I can be parachuting you can be parachuting he can be parachuting we can be parachuting you can be parachuting they can be parachuting
Perfect
I can have parachuted you can have parachuted he can have parachuted we can have parachuted you can have parachuted they can have parachuted
V-ing perfect
I can have been parachuting you can have been parachuting he can have been parachuting we can have been parachuting you can have been parachuting they can have been parachuting
Negation
Simple form
I can't parachute you can't parachute he can't parachute we can't parachute you can't parachute they can't parachute
V-ing form
I can't be parachuting you can't be parachuting he can't be parachuting we can't be parachuting you can't be parachuting they can't be parachuting
Perfect
I can't have parachuted you can't have parachuted he can't have parachuted we can't have parachuted you can't have parachuted they can't have parachuted
V-ing perfect
I can't have been parachuting you can't have been parachuting he can't have been parachuting we can't have been parachuting you can't have been parachuting they can't have been parachuting
Interrogative form
Simple form
can I parachute? can you parachute? can he parachute? can we parachute? can you parachute? can they parachute?
V-ing form
can I be parachuting? can you be parachuting? can he be parachuting? can we be parachuting? can you be parachuting? can they be parachuting?
Perfect
can I have parachuted? can you have parachuted? can he have parachuted? can we have parachuted? can you have parachuted? can they have parachuted?
V-ing perfect
can I have been parachuting? can you have been parachuting? can he have been parachuting? can we have been parachuting? can you have been parachuting? can they have been parachuting?
Interro-negative form
Simple form
can't I parachute? can't you parachute? can't he parachute? can't we parachute? can't you parachute? can't they parachute?
V-ing form
can't I be parachuting? can't you be parachuting? can't he be parachuting? can't we be parachuting? can't you be parachuting? can't they be parachuting?
Perfect
can't I have parachuted? can't you have parachuted? can't he have parachuted? can't we have parachuted? can't you have parachuted? can't they have parachuted?
V-ing perfect
can't I have been parachuting? can't you have been parachuting? can't he have been parachuting? can't we have been parachuting? can't you have been parachuting? can't they have been parachuting?