Agricola trāns agrum ambulat. The farmer walks across the field. Puer in casā sedet. The boy is sitting in the house. The dictionary entry for a preposition will indicate which case it is used with, and this case should be memorized when you learn each new preposition. Note that some prepositions can be used with either case and will have different meanings with each case: in (+ abl.) in, on in (+ acc.) into, onto, against A preposition usually comes before its object. Chapter 2 introduced the