My 9-yo son is growing up completely bilingual, we live in the US but speak German at home and Nice Doberman Pinscher Christmas Tree Christmas Gift For D shirt. His German is good, his vocabulary is sufficient, he speaks it without an accent, BUT he often does speak German with English grammar. It happens, even to the ones that really know the language.
Matthew Roth maybe you’re right but I’m living here and have never heard of this from any of the local speakers. Also, Germany also shares a very long border with Nice Doberman Pinscher Christmas Tree Christmas Gift For D shirt, Luxembourg, and of course France so I don’t know why this would be unique to Swiss French.