English verb conjugation
CAN WATCH

Regular verb: watch - watched - watched

Affirmation

Simple form	V-ing form
I can watch you can watch he can watch we can watch you can watch they can watch	I can be watching you can be watching he can be watching we can be watching you can be watching they can be watching
Perfect	V-ing perfect
I can have watched you can have watched he can have watched we can have watched you can have watched they can have watched	I can have been watching you can have been watching he can have been watching we can have been watching you can have been watching they can have been watching

Negation

Simple form	V-ing form
I cannot watch you cannot watch he cannot watch we cannot watch you cannot watch they cannot watch	I cannot be watching you cannot be watching he cannot be watching we cannot be watching you cannot be watching they cannot be watching
Perfect	V-ing perfect
I cannot have watched you cannot have watched he cannot have watched we cannot have watched you cannot have watched they cannot have watched	I cannot have been watching you cannot have been watching he cannot have been watching we cannot have been watching you cannot have been watching they cannot have been watching

Interrogative form

Simple form	V-ing form
can I watch? can you watch? can he watch? can we watch? can you watch? can they watch?	can I be watching? can you be watching? can he be watching? can we be watching? can you be watching? can they be watching?
Perfect	V-ing perfect
can I have watched? can you have watched? can he have watched? can we have watched? can you have watched? can they have watched?	can I have been watching? can you have been watching? can he have been watching? can we have been watching? can you have been watching? can they have been watching?

Interro-negative form

Simple form	V-ing form
can I not watch? can you not watch? can he not watch? can we not watch? can you not watch? can they not watch?	can I not be watching? can you not be watching? can he not be watching? can we not be watching? can you not be watching? can they not be watching?
Perfect	V-ing perfect
can I not have watched? can you not have watched? can he not have watched? can we not have watched? can you not have watched? can they not have watched?	can I not have been watching? can you not have been watching? can he not have been watching? can we not have been watching? can you not have been watching? can they not have been watching?