The man in the car is the driver. In each prepositional phrase, there is an object of the preposition. In the first example, chair is the object of the preposition on. In the second example, car is the object of the preposition in . In Greek, it is very important to learn what cases can be used with a given preposition, and to note what meaning is associated with the preposition for each case.
Some prepositions consistently take only one case.
Other prepositions may take two or three different cases, and have varying meanings depending on which case is used. You must associate the case and the meaning together when learning a preposition. Learn the following prepositions, associating each case used with the corresponding meaning. Consider the prepositions represented in the graphic below, noting carefully the case with which the indicated meaning is associated. Prepositions are often combined with verbs to form compound words.