I can cheer you can cheer he can cheer we can cheer you can cheer they can cheer
V-ing form
I can be cheering you can be cheering he can be cheering we can be cheering you can be cheering they can be cheering
Perfect
I can have cheered you can have cheered he can have cheered we can have cheered you can have cheered they can have cheered
V-ing perfect
I can have been cheering you can have been cheering he can have been cheering we can have been cheering you can have been cheering they can have been cheering
Negation
Simple form
I can't cheer you can't cheer he can't cheer we can't cheer you can't cheer they can't cheer
V-ing form
I can't be cheering you can't be cheering he can't be cheering we can't be cheering you can't be cheering they can't be cheering
Perfect
I can't have cheered you can't have cheered he can't have cheered we can't have cheered you can't have cheered they can't have cheered
V-ing perfect
I can't have been cheering you can't have been cheering he can't have been cheering we can't have been cheering you can't have been cheering they can't have been cheering
Interrogative form
Simple form
can I cheer? can you cheer? can he cheer? can we cheer? can you cheer? can they cheer?
V-ing form
can I be cheering? can you be cheering? can he be cheering? can we be cheering? can you be cheering? can they be cheering?
Perfect
can I have cheered? can you have cheered? can he have cheered? can we have cheered? can you have cheered? can they have cheered?
V-ing perfect
can I have been cheering? can you have been cheering? can he have been cheering? can we have been cheering? can you have been cheering? can they have been cheering?
Interro-negative form
Simple form
can't I cheer? can't you cheer? can't he cheer? can't we cheer? can't you cheer? can't they cheer?
V-ing form
can't I be cheering? can't you be cheering? can't he be cheering? can't we be cheering? can't you be cheering? can't they be cheering?
Perfect
can't I have cheered? can't you have cheered? can't he have cheered? can't we have cheered? can't you have cheered? can't they have cheered?
V-ing perfect
can't I have been cheering? can't you have been cheering? can't he have been cheering? can't we have been cheering? can't you have been cheering? can't they have been cheering?