I can sunbathe you can sunbathe he can sunbathe we can sunbathe you can sunbathe they can sunbathe
V-ing form
I can be sunbathing you can be sunbathing he can be sunbathing we can be sunbathing you can be sunbathing they can be sunbathing
Perfect
I can have sunbathed you can have sunbathed he can have sunbathed we can have sunbathed you can have sunbathed they can have sunbathed
V-ing perfect
I can have been sunbathing you can have been sunbathing he can have been sunbathing we can have been sunbathing you can have been sunbathing they can have been sunbathing
Negation
Simple form
I can't sunbathe you can't sunbathe he can't sunbathe we can't sunbathe you can't sunbathe they can't sunbathe
V-ing form
I can't be sunbathing you can't be sunbathing he can't be sunbathing we can't be sunbathing you can't be sunbathing they can't be sunbathing
Perfect
I can't have sunbathed you can't have sunbathed he can't have sunbathed we can't have sunbathed you can't have sunbathed they can't have sunbathed
V-ing perfect
I can't have been sunbathing you can't have been sunbathing he can't have been sunbathing we can't have been sunbathing you can't have been sunbathing they can't have been sunbathing
Interrogative form
Simple form
can I sunbathe? can you sunbathe? can he sunbathe? can we sunbathe? can you sunbathe? can they sunbathe?
V-ing form
can I be sunbathing? can you be sunbathing? can he be sunbathing? can we be sunbathing? can you be sunbathing? can they be sunbathing?
Perfect
can I have sunbathed? can you have sunbathed? can he have sunbathed? can we have sunbathed? can you have sunbathed? can they have sunbathed?
V-ing perfect
can I have been sunbathing? can you have been sunbathing? can he have been sunbathing? can we have been sunbathing? can you have been sunbathing? can they have been sunbathing?
Interro-negative form
Simple form
can't I sunbathe? can't you sunbathe? can't he sunbathe? can't we sunbathe? can't you sunbathe? can't they sunbathe?
V-ing form
can't I be sunbathing? can't you be sunbathing? can't he be sunbathing? can't we be sunbathing? can't you be sunbathing? can't they be sunbathing?
Perfect
can't I have sunbathed? can't you have sunbathed? can't he have sunbathed? can't we have sunbathed? can't you have sunbathed? can't they have sunbathed?
V-ing perfect
can't I have been sunbathing? can't you have been sunbathing? can't he have been sunbathing? can't we have been sunbathing? can't you have been sunbathing? can't they have been sunbathing?