I can shiver you can shiver he can shiver we can shiver you can shiver they can shiver
V-ing form
I can be shivering you can be shivering he can be shivering we can be shivering you can be shivering they can be shivering
Perfect
I can have shivered you can have shivered he can have shivered we can have shivered you can have shivered they can have shivered
V-ing perfect
I can have been shivering you can have been shivering he can have been shivering we can have been shivering you can have been shivering they can have been shivering
Negation
Simple form
I cannot shiver you cannot shiver he cannot shiver we cannot shiver you cannot shiver they cannot shiver
V-ing form
I cannot be shivering you cannot be shivering he cannot be shivering we cannot be shivering you cannot be shivering they cannot be shivering
Perfect
I cannot have shivered you cannot have shivered he cannot have shivered we cannot have shivered you cannot have shivered they cannot have shivered
V-ing perfect
I cannot have been shivering you cannot have been shivering he cannot have been shivering we cannot have been shivering you cannot have been shivering they cannot have been shivering
Interrogative form
Simple form
can I shiver? can you shiver? can he shiver? can we shiver? can you shiver? can they shiver?
V-ing form
can I be shivering? can you be shivering? can he be shivering? can we be shivering? can you be shivering? can they be shivering?
Perfect
can I have shivered? can you have shivered? can he have shivered? can we have shivered? can you have shivered? can they have shivered?
V-ing perfect
can I have been shivering? can you have been shivering? can he have been shivering? can we have been shivering? can you have been shivering? can they have been shivering?
Interro-negative form
Simple form
can I not shiver? can you not shiver? can he not shiver? can we not shiver? can you not shiver? can they not shiver?
V-ing form
can I not be shivering? can you not be shivering? can he not be shivering? can we not be shivering? can you not be shivering? can they not be shivering?
Perfect
can I not have shivered? can you not have shivered? can he not have shivered? can we not have shivered? can you not have shivered? can they not have shivered?
V-ing perfect
can I not have been shivering? can you not have been shivering? can he not have been shivering? can we not have been shivering? can you not have been shivering? can they not have been shivering?