answer:Yes, definitely. My first language is German, and I learned English when I was eleven. Ever since then, there have been moments when I couldn’t think of the German word for something. I often just use the English one instead, when I’m with my family. Sometimes I change the suffix, creating an (apparently) German word. I notice this gets worse when I read a lot of English books, or watch English TV series. I consciously cut back during the weeks preceding exams, reading German newspapers to get into the “style” I need to write well. “I would never had made the mistake in the first place.”? Heehee.