I am living in Germany. In the university which I am working, there are some presentation events where people describe what they have done in front of different groups of professors/people. The German colleagues talk in German (I am the only one in our group which cannot talk in German). What is the best way to inform the audience that I am going to change the language from German to English?
Before, I was starting with "Let's change the language to English", and then start talking. Is that good?