I liked what this fella had to say about subjunctives in his recent video. It’s a subject we anglophones don’t really use much, but most latin languages make a much bigger deal of it. I have read a few french books and it definitely doesn’t get as much of an airing in that language as it does in portuguese, but I think the principles and the rationale behind it carries across between languages, so the points he makes here about french, spanish and italian still hold, I think. I won’t try and summarise them – if you’re reading this and you struggling to put some junc in your trunc, have a look for yourself.