The German preposition, fuer always takes the accusative
case. So no worries. Depending on the article of the object the
possibilities are (1) for masculine article: fuer den (2) for feminine: fuer die (3) for neutral: fuer das.
Most of the time, the use of fuer is very similar to the English use of for. Other than that, [...]
Simplified, the meaning of the German ‘in’ preposition changes according to the case.
In the dative case, which asks the question where? or in German, wo? and pertains to a space. The English equivalent would be: at or also in. Depending on the article of the object the possibilities are (1) for masculine and neutral articles: [...]
The German preposition, gegen always takes the accusative case. Depending on the article of the object the possibilities are (1) for masculine article: gegen den (2) for feminine: gegen die (3) for neutral: gegen das.
Most of the time, the use of gegen is very similar to the English use of towards and against.
Other meanings include, [...]