I can usually recognize a Polish speaker when they say, Good Morning (Goot Morrrning.)
Lol.
They cannot say the "i" in "is". No matter how much you try to teach them, they wil always say "ees", also the endings "ing" are always said "eenk", for example "speakink". And the list goes on and on. You can tell who is Polish who is German or who is Hindu by the way they try to speak English. It's funny. Lol