I can damage you can damage he can damage we can damage you can damage they can damage
V-ing form
I can be damaging you can be damaging he can be damaging we can be damaging you can be damaging they can be damaging
Perfect
I can have damaged you can have damaged he can have damaged we can have damaged you can have damaged they can have damaged
V-ing perfect
I can have been damaging you can have been damaging he can have been damaging we can have been damaging you can have been damaging they can have been damaging
Negation
Simple form
I can't damage you can't damage he can't damage we can't damage you can't damage they can't damage
V-ing form
I can't be damaging you can't be damaging he can't be damaging we can't be damaging you can't be damaging they can't be damaging
Perfect
I can't have damaged you can't have damaged he can't have damaged we can't have damaged you can't have damaged they can't have damaged
V-ing perfect
I can't have been damaging you can't have been damaging he can't have been damaging we can't have been damaging you can't have been damaging they can't have been damaging
Interrogative form
Simple form
can I damage? can you damage? can he damage? can we damage? can you damage? can they damage?
V-ing form
can I be damaging? can you be damaging? can he be damaging? can we be damaging? can you be damaging? can they be damaging?
Perfect
can I have damaged? can you have damaged? can he have damaged? can we have damaged? can you have damaged? can they have damaged?
V-ing perfect
can I have been damaging? can you have been damaging? can he have been damaging? can we have been damaging? can you have been damaging? can they have been damaging?
Interro-negative form
Simple form
can't I damage? can't you damage? can't he damage? can't we damage? can't you damage? can't they damage?
V-ing form
can't I be damaging? can't you be damaging? can't he be damaging? can't we be damaging? can't you be damaging? can't they be damaging?
Perfect
can't I have damaged? can't you have damaged? can't he have damaged? can't we have damaged? can't you have damaged? can't they have damaged?
V-ing perfect
can't I have been damaging? can't you have been damaging? can't he have been damaging? can't we have been damaging? can't you have been damaging? can't they have been damaging?