Greets!
Miles and nopax are correct I believe, i.e., the Canadian controller says, "You are cleared for AN approach", something we never hear in the States. Been that way as long as I can remember. This is why the NBAA and handlers are so important.
I'm still surprised at the folks who get the 'deer in the headlights' look when an unusual term comes up. It might be unusual, but it shouldn't be unexpected.