This conjugation tense is usually utilized to form traditional polite expressions in German. You could consult the lesson dedicated to the use of the subjunctive II in German. The primary use from the subjunctive I in German will be the indirect speech, these tenses are less Employed in the German https://geschaftmega.de/die-umweltfreundliche-revolution-warum-baumwolltaschen-die-nachhaltige-wahl-sind/