Simple: stop trying and give Anglosaxons a chance at your own mother language.
from Süddeutsche Zeitung Nr. 263/ p 11:Audienzgerecht
Would anybody come to Germany to get exposed to bad English?
German as language for sciences ? A tricky question.
In Lessing's "Minna von Barnhelm" the baffled Frenchman de Riccaut la Marliniere asks: "Vous speakez pas French, Madame? " and the heroïne gives him a straightforward, common sense answer: "Sir, I would give it a try in France." This proud modesty in relation to our own mother language is missing everywhere in this country.
A New Zealander of Chinese Origin, living in Germany for years, complained, that she hardly gets a chance to speak German: even the clerk at the post office counter will grab the opportunity to practice his English on her.This is rather rude from Germans, even when meant as a polite gesture. A participant in the discusssion brought it to the point: do we seriously expect foreign students will come to Germany to listen to lectures in bad English?...