I can fantasise you can fantasise she can fantasise we can fantasise you can fantasise they can fantasise
V-ing form
I can be fantasising you can be fantasising she can be fantasising we can be fantasising you can be fantasising they can be fantasising
Perfect
I can have fantasised you can have fantasised she can have fantasised we can have fantasised you can have fantasised they can have fantasised
V-ing perfect
I can have been fantasising you can have been fantasising she can have been fantasising we can have been fantasising you can have been fantasising they can have been fantasising
Negation
Simple form
I can't fantasise you can't fantasise she can't fantasise we can't fantasise you can't fantasise they can't fantasise
V-ing form
I can't be fantasising you can't be fantasising she can't be fantasising we can't be fantasising you can't be fantasising they can't be fantasising
Perfect
I can't have fantasised you can't have fantasised she can't have fantasised we can't have fantasised you can't have fantasised they can't have fantasised
V-ing perfect
I can't have been fantasising you can't have been fantasising she can't have been fantasising we can't have been fantasising you can't have been fantasising they can't have been fantasising
Interrogative form
Simple form
can I fantasise? can you fantasise? can she fantasise? can we fantasise? can you fantasise? can they fantasise?
V-ing form
can I be fantasising? can you be fantasising? can she be fantasising? can we be fantasising? can you be fantasising? can they be fantasising?
Perfect
can I have fantasised? can you have fantasised? can she have fantasised? can we have fantasised? can you have fantasised? can they have fantasised?
V-ing perfect
can I have been fantasising? can you have been fantasising? can she have been fantasising? can we have been fantasising? can you have been fantasising? can they have been fantasising?
Interro-negative form
Simple form
can't I fantasise? can't you fantasise? can't she fantasise? can't we fantasise? can't you fantasise? can't they fantasise?
V-ing form
can't I be fantasising? can't you be fantasising? can't she be fantasising? can't we be fantasising? can't you be fantasising? can't they be fantasising?
Perfect
can't I have fantasised? can't you have fantasised? can't she have fantasised? can't we have fantasised? can't you have fantasised? can't they have fantasised?
V-ing perfect
can't I have been fantasising? can't you have been fantasising? can't she have been fantasising? can't we have been fantasising? can't you have been fantasising? can't they have been fantasising?