Prepositions in French function nearly the same as in English. They form phrases to describes actions, such dans la maison (in the house).

The tricky aspect of French prepositions is remembering which preposition to use in a given context. French prepositions don't always translate one-to-one with English prepositions.

Also, French prepositions never come at the end of a sentence, like the might in English. For example, "She is coming in" does not translate to Elle vient po. Rather, you say Elle entre.

Check out the Idiomatic Prepositional Phrases lesson for more information on French prepositions.