Many languages have noun cases. We don’t teach cases in English, but there definitely are some correlations between cases and English grammar. Maybe it would be a good idea to acknowledge some of the cases used in the students’ native tongue(s) and explain what English uses instead.
Have you ever been asked, “How can you teach students English if you don’t speak their language?” I get that a lot. It’s not necessary to know the native tongue to teach English. Here’s why.