May - can I have that, please?

Elisabeth is getting better and better at using please in her requests without being prompted. However, she still often says can when may is the appropriate word. So when she asks, "Can I have that?" I tell her, "Please say: 'May I please have that?'"

She is getting the sense that may ought to be part of her request, but hasn't yet realized that it replaces can, so many of her requests go like this:

May - can I have that, please?