I can dive you can dive he can dive we can dive you can dive they can dive
V-ing form
I can be diving you can be diving he can be diving we can be diving you can be diving they can be diving
Perfect
I can have dived you can have dived he can have dived we can have dived you can have dived they can have dived
V-ing perfect
I can have been diving you can have been diving he can have been diving we can have been diving you can have been diving they can have been diving
Negation
Simple form
I can't dive you can't dive he can't dive we can't dive you can't dive they can't dive
V-ing form
I can't be diving you can't be diving he can't be diving we can't be diving you can't be diving they can't be diving
Perfect
I can't have dived you can't have dived he can't have dived we can't have dived you can't have dived they can't have dived
V-ing perfect
I can't have been diving you can't have been diving he can't have been diving we can't have been diving you can't have been diving they can't have been diving
Interrogative form
Simple form
can I dive? can you dive? can he dive? can we dive? can you dive? can they dive?
V-ing form
can I be diving? can you be diving? can he be diving? can we be diving? can you be diving? can they be diving?
Perfect
can I have dived? can you have dived? can he have dived? can we have dived? can you have dived? can they have dived?
V-ing perfect
can I have been diving? can you have been diving? can he have been diving? can we have been diving? can you have been diving? can they have been diving?
Interro-negative form
Simple form
can't I dive? can't you dive? can't he dive? can't we dive? can't you dive? can't they dive?
V-ing form
can't I be diving? can't you be diving? can't he be diving? can't we be diving? can't you be diving? can't they be diving?
Perfect
can't I have dived? can't you have dived? can't he have dived? can't we have dived? can't you have dived? can't they have dived?
V-ing perfect
can't I have been diving? can't you have been diving? can't he have been diving? can't we have been diving? can't you have been diving? can't they have been diving?