I can throw you can throw he can throw we can throw you can throw they can throw
V-ing form
I can be throwing you can be throwing he can be throwing we can be throwing you can be throwing they can be throwing
Perfect
I can have thrown you can have thrown he 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 he can have been throwing we can have been throwing you can have been throwing they can have been throwing
Negation
Simple form
I can't throw you can't throw he can't throw we can't throw you can't throw they can't throw
V-ing form
I can't be throwing you can't be throwing he can't be throwing we can't be throwing you can't be throwing they can't be throwing
Perfect
I can't have thrown you can't have thrown he can't have thrown we can't have thrown you can't have thrown they can't have thrown
V-ing perfect
I can't have been throwing you can't have been throwing he can't have been throwing we can't have been throwing you can't have been throwing they can't have been throwing
Interrogative form
Simple form
can I throw? can you throw? can he throw? can we throw? can you throw? can they throw?
V-ing form
can I be throwing? can you be throwing? can he be throwing? can we be throwing? can you be throwing? can they be throwing?
Perfect
can I have thrown? can you have thrown? can he 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 he have been throwing? can we have been throwing? can you have been throwing? can they have been throwing?
Interro-negative form
Simple form
can't I throw? can't you throw? can't he throw? can't we throw? can't you throw? can't they throw?
V-ing form
can't I be throwing? can't you be throwing? can't he be throwing? can't we be throwing? can't you be throwing? can't they be throwing?
Perfect
can't I have thrown? can't you have thrown? can't he have thrown? can't we have thrown? can't you have thrown? can't they have thrown?
V-ing perfect
can't I have been throwing? can't you have been throwing? can't he have been throwing? can't we have been throwing? can't you have been throwing? can't they have been throwing?