Type of German in Duo
What type of German are we learning in Duolingo?
I mean, I'm not very clear on the subject about german slang and dialects, but I know there are different form of german in Germany alone,( High and Low german ), In Austria is different and Switzerland is something else entierly.
For both High and Low German exists a dialect continuum, i. e. there are many different varieties which are usually mutually understandable in neighboring areas but become increasingly diverse when the distance increases.
Low German is closer to Dutch than to High German, but you do not worry about it, because all speakers of Low German are bilingual and speak High German, too.
They, and all speakers of High German, might speak incomprehensible to foreign language learners among themselves, but usually speak standard Hochdeutsch when talking to strangers, usually with an accent influenced by their local dialect (sometimes quite thick) and some phrases typical for the region.
For example: in Munich the standard greeting is "Grüß Gott" instead of "Guten Tag" and in Hamburg you say "Tschüß" very often instead of "Auf Wiedersehen". But the standard versions are understood, of course.
Since mobility is high nowadays, the regional differences tend to diminish.
Both the Austrian and Swiss German versions belong to the High German dialect continuum, but borders do have an effect on schooling, broadcasting, etc., thus, variations of the Hochdeutsch standards exist.
With the knowledge of history they told you something correct but it also comes up to which level of education you meet. Since the old time where the Hannoveraner (and I do not mean the horses that are also called Hannoveraner) where the upper class aristocrats here we changed a little. There are also some people in Berlin, Hamburg, Stralsund and somewhere else where they speak absolut correct High German. The higher educated where the families where not going with the fashion in languages taught their children to speak High German whenever they open their mouse. Everything else is only since one generation where they say that the Berlin dialect would be good because it is the capitol town... You can see that High German is still the best because of our papers, letters, business letters, the possibility to be understood everywhere and the reaction of people.
The biggest point to speak correctly High German is not to mute consonants at the end of words and speak with time for the words. Parts of the full words should not be left out if you want to be really good in German. Here are some mistakes a lot of people do: "is' " => correct: "Ist" "ne" or "nö" => correct: "nein" "mal" => correct: "einmal" "Hast' e" => correct:"Hast Du" "Was?" => (most times correct:) "Wie bitte?" "nich' " => "nicht"
Also you should not use this [...]: "ey", "Alter" (only if you mean something that has to do with age), "icke" (for "ich"), "dette"(for "dies dort"), "kicke mal" (for "schaue bitte einmal" ), "jut"(for "gut")
This are typical Berlin accents that sound like if someone has a bad education.
It is Standard/ High German
Our Berlin Slang for example sounds unkind and there are missing letters in the end of some words with a "g", "s" or "t" in the end. For example: If you can not believe something really happened we say: "Ist nicht wahr oder?" in Berlin dialect it sound like if you would write: "Is´nich`wa' odda?" For example (She speaks mostly correct Standard German and he speaks Berlin dialect:) https://www.youtube.com/watch?v=YbjTpVrMehw
The Bavarian slang is the most easy to know that it is that dialect but it is also heavy to understand for German people too. It sounds like this (blue summer dress is Bavarian, the woman with the black shirt speaks High German): https://www.youtube.com/watch?v=IKF0HfSg_oo
We have also the "Sächsisch" and the "Hessisch", the "Schwäbisch", the "Fränkisch", the "Badisch", the "Rheinisch"/ "Kölsch", the "Plattdeutsch", the "Friesisch" and few others that are not so famous. With High German they understand you everywhere in Germany and it is the only dialect that is completely accepted for written German in business.
I hope this helped you a lot