Prepositions in German belong to the accusative, dative, accusative or dative, or genitive cases. Those only belonging to the accusative case include: durch, für, gegen, ohne, um.
Prepositions found only in the dative case are: aus außer, bei, mit, nach, seit, von, zu. Prepositions that can take either the accusative or dative case include: an, auf, hinter, in, neben, über, unter, vor, zwischen.
The genitive prepositions are: anstatt, statt, diesseits, jenseits, außerhalb, innerhalb, oberhalb, unterhalb, trotz, während, wegen.
German still maintains some forms that have eroded in English, including the use of “da”- and “wo”-compounds. In English, these are those compound words formed from prepositions combined with “there” or “where” (e.g. therefore, thereafter, wherefore, whereupon, etc.). These compounds in German are used as abbreviated forms of prepositional phrases.