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 cannot sport you cannot sport he cannot sport we cannot sport you cannot sport they cannot sport
V-ing form
I cannot be sporting you cannot be sporting he cannot be sporting we cannot be sporting you cannot be sporting they cannot be sporting
Perfect
I cannot have sported you cannot have sported he cannot have sported we cannot have sported you cannot have sported they cannot have sported
V-ing perfect
I cannot have been sporting you cannot have been sporting he cannot have been sporting we cannot have been sporting you cannot have been sporting they cannot 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 I not sport? can you not sport? can he not sport? can we not sport? can you not sport? can they not sport?
V-ing form
can I not be sporting? can you not be sporting? can he not be sporting? can we not be sporting? can you not be sporting? can they not be sporting?
Perfect
can I not have sported? can you not have sported? can he not have sported? can we not have sported? can you not have sported? can they not have sported?
V-ing perfect
can I not have been sporting? can you not have been sporting? can he not have been sporting? can we not have been sporting? can you not have been sporting? can they not have been sporting?