Modification de la polarité du verbe ou prédicat effacé ?

Change of the verb polarity or predicate deleted? Some French verbs, such as sortir, s’enfuir, s’éloigner, can be built with a preposition of polarity different from that of the verb: sortir dans, s’enfuir dans, s’éloigner vers. It is possible to consider these structures as the witness of deletion of a second verbal predicate: X sort (de la maison et entre) dans la rue, X s’éloigne (d’un endroit et s’approche) vers Y. We can see the same deletion in case of pluripolar verbs, which can be constructed with two prepositions (eg tomber).