When you say "Mother tongue", I suppose you mean mother language?
Well then, my mother language is Hebrew, since I was born in Israel. :P
The Hebrew R is quite like the French R, but it's a little softer.
I had looked into the "Erre", and saw that I made a mistake. What I meant was that I know how to pronounce the "Erre" sound, but not the "ere" sound.
So, when the R is before a consonant or at the end of a word, is it like a 1-trilled-Erre?
I still need to find out about the "clipped" Erre, because I don't think I've heard it yet.
Thank you very much for your help.