LESSON 28 PREPOSITIONS (PART 1) The special significance of the cases in nouns, etc., was pointed out in Lesson 2. The relations broadly stated there, and a variety of others, are expressed also by means of prepositions. Thus, while the accusative itself chiefly signifies motion towards, this relation may be expressed by such a preposition as πρός, with the accusative of the following noun. Again, one of the meanings of the genitive case is motion from, and this is likewise conveyed by ἀπό,