In California, I had a difficult time communicating 
with my family because I would often use the lingo I developed in Hawaii.
If you spent some quality time in listening and analyzing sounds and words then it would be useful for 
one. Hello is "hallo", good morning is "Guten Morgen," How 
much is this is "Wieviel kostet das," hotel is (luckily) "hotel," bank is "das Bankhaus," and airport is "der Flughafen.