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 can't watch you can't watch he can't watch we can't watch you can't watch they can't watch	I can't be watching you can't be watching he can't be watching we can't be watching you can't be watching they can't be watching
Perfect	V-ing perfect
I can't have watched you can't have watched he can't have watched we can't have watched you can't have watched they can't have watched	I can't have been watching you can't have been watching he can't have been watching we can't have been watching you can't have been watching they can't 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't I watch? can't you watch? can't he watch? can't we watch? can't you watch? can't they watch?	can't I be watching? can't you be watching? can't he be watching? can't we be watching? can't you be watching? can't they be watching?
Perfect	V-ing perfect
can't I have watched? can't you have watched? can't he have watched? can't we have watched? can't you have watched? can't they have watched?	can't I have been watching? can't you have been watching? can't he have been watching? can't we have been watching? can't you have been watching? can't they have been watching?