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Our lecturer split it into

Institution: bei der, beim
Firma: bei
Stadt/Land: in
Haus/Gebäude: im, in dem

But I mix things up.

  • How can "in Büro" be correct (is it a Stadt?)?
  • Can anyone give a concise guide, reference, article about it, please?

P.S.: I do understand, that in this case we use Dative and there gender forms are dem/der/dem/den correspondingly.

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„in Büro“ is not correct. It’s „im Büro“. E.g. „Ich bin gerade im Büro.“ – AlexE Oct 23 '12 at 17:29
This is the best guide I know of:… – dualed Oct 23 '12 at 19:10
Closely related:… – Takkat Oct 23 '12 at 19:56
up vote 7 down vote accepted

Keep in mind that you often omit the article pronoun for a city's or a person's names (like Berlin, or Peter, etc.). You do use an article for a building's name, however.


  • bei der Verwaltung fem.
  • beim Amt obj.


  • bei Google (Google is a name, therefore no article)


  • in Berlin (a name again)


  • im Büro, in dem Büro obj.
  • im Empire State Building (named building)
  • auf dem Empire State Building (means physically on top!)

It is im Büro, which is short for in dem Büro to be explicit. Büro means office and is not a name. Reading the question I'm not sure whether this is clear, sorry if it is.

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In some regions - namely Bavaria - persons are addressed using an article. For example Ich habe dem Peter das Buch gegeben instead of Ich habe Peter das Buch gegeben. The phrase Ich bin beim Peter (instead of Ich bin bei Peter) is very common there. – Thorsten Dittmar Oct 24 '12 at 12:14
@ThorstenDittmar I think this is not just some regions but most. – Em1 Oct 24 '12 at 12:21
OK, that's true. You do agree though this is colloquial German, don't you? – Matthias Meid Oct 24 '12 at 12:26
Actually I'm not sure whether it is just colloquial... – Thorsten Dittmar Oct 24 '12 at 13:27

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