I can throw you can throw she can throw we can throw you can throw they can throw
V-ing form
I can be throwing you can be throwing she can be throwing we can be throwing you can be throwing they can be throwing
Perfect
I can have thrown you can have thrown she can have thrown we can have thrown you can have thrown they can have thrown
V-ing perfect
I can have been throwing you can have been throwing she can have been throwing we can have been throwing you can have been throwing they can have been throwing
Negation
Simple form
I cannot throw you cannot throw she cannot throw we cannot throw you cannot throw they cannot throw
V-ing form
I cannot be throwing you cannot be throwing she cannot be throwing we cannot be throwing you cannot be throwing they cannot be throwing
Perfect
I cannot have thrown you cannot have thrown she cannot have thrown we cannot have thrown you cannot have thrown they cannot have thrown
V-ing perfect
I cannot have been throwing you cannot have been throwing she cannot have been throwing we cannot have been throwing you cannot have been throwing they cannot have been throwing
Interrogative form
Simple form
can I throw? can you throw? can she throw? can we throw? can you throw? can they throw?
V-ing form
can I be throwing? can you be throwing? can she be throwing? can we be throwing? can you be throwing? can they be throwing?
Perfect
can I have thrown? can you have thrown? can she have thrown? can we have thrown? can you have thrown? can they have thrown?
V-ing perfect
can I have been throwing? can you have been throwing? can she have been throwing? can we have been throwing? can you have been throwing? can they have been throwing?
Interro-negative form
Simple form
can I not throw? can you not throw? can she not throw? can we not throw? can you not throw? can they not throw?
V-ing form
can I not be throwing? can you not be throwing? can she not be throwing? can we not be throwing? can you not be throwing? can they not be throwing?
Perfect
can I not have thrown? can you not have thrown? can she not have thrown? can we not have thrown? can you not have thrown? can they not have thrown?
V-ing perfect
can I not have been throwing? can you not have been throwing? can she not have been throwing? can we not have been throwing? can you not have been throwing? can they not have been throwing?