Torsten’s post about “five of” made me think of another confusing expression: next, when it precedes the name of a day.
If it is Sunday, and you say “next Monday”, it does not mean tomorrow, but two Mondays from now.
If it is Saturday, and you say “next Monday”, it likewise probably means two Mondays from now.
If it is Tuesday, and you say “next Monday” it really means the next Monday that’s coming up.
It’s the same if you say it on Wednesday or Thursday, but if you say it on Friday, it’s not always clear whether you mean the next Monday coming up, or the following Monday.
This is very clear in the minds of native English speakers, but my mother used to throw everything haywire by saying “next Monday”, etc., even on Saturday or Sunday. In other words, she often used “next” for days that were too close. I’d have to ask, “Do you mean this coming Monday or the following Monday?!” It drove me crazy.
My mother was a native English speaker – most people would say an impeccable native speaker – but I think this problem was one little vestige of her parents’ native language.