I can sport you can sport he can sport we can sport you can sport they can sport
V-ing form
I can be sporting you can be sporting he can be sporting we can be sporting you can be sporting they can be sporting
Perfect
I can have sported you can have sported he can have sported we can have sported you can have sported they can have sported
V-ing perfect
I can have been sporting you can have been sporting he can have been sporting we can have been sporting you can have been sporting they can have been sporting
Negation
Simple form
I can't sport you can't sport he can't sport we can't sport you can't sport they can't sport
V-ing form
I can't be sporting you can't be sporting he can't be sporting we can't be sporting you can't be sporting they can't be sporting
Perfect
I can't have sported you can't have sported he can't have sported we can't have sported you can't have sported they can't have sported
V-ing perfect
I can't have been sporting you can't have been sporting he can't have been sporting we can't have been sporting you can't have been sporting they can't have been sporting
Interrogative form
Simple form
can I sport? can you sport? can he sport? can we sport? can you sport? can they sport?
V-ing form
can I be sporting? can you be sporting? can he be sporting? can we be sporting? can you be sporting? can they be sporting?
Perfect
can I have sported? can you have sported? can he have sported? can we have sported? can you have sported? can they have sported?
V-ing perfect
can I have been sporting? can you have been sporting? can he have been sporting? can we have been sporting? can you have been sporting? can they have been sporting?
Interro-negative form
Simple form
can't I sport? can't you sport? can't he sport? can't we sport? can't you sport? can't they sport?
V-ing form
can't I be sporting? can't you be sporting? can't he be sporting? can't we be sporting? can't you be sporting? can't they be sporting?
Perfect
can't I have sported? can't you have sported? can't he have sported? can't we have sported? can't you have sported? can't they have sported?
V-ing perfect
can't I have been sporting? can't you have been sporting? can't he have been sporting? can't we have been sporting? can't you have been sporting? can't they have been sporting?