Examples.--_Ili sekvis unu post la alia_ = They followed one after another. _Iom post iom ŝi pli trankviliĝis_ = Little by little she became more tranquil.
As a prefix, _Postveni_ = To come after, to succeed. _Posttagmezo_ = Afternoon. _Postvivi_ = To survive.
259 (25). Preter = _Beyond_, _past_, _by_.
Differs from trans = _across_ (_beyond_), in that preter shows the movement of something passing by, or alongside, something else. Trans signifies that something is on the other side of a boundary, or is crossing, or has crossed that boundary (see also tra, par. 259 (33)).
Examples.--_Mi iris preter la fenestroj de la domo_ = I went by (past, beside) the windows of the house. _Du sinjorinoj iris preter ni, kaj transiris la straton_ = Two ladies passed (went) by us, and crossed the street.
Preter, as a prefix, has a similar meaning.
Examples.--_Mi preteriris la fenestrojn de la domo_ = I passed by the windows of the house. _Du sinjorinoj preteriris nin_ = Two ladies went by (passed) us. _Mi preterlasis lin_ = I let him pass by (I let him beyond). _Li preterlasis la okazon_ = He let the occasion (opportunity) pass, _or_, he missed the opportunity.
Reference = _Concerning_, _respecting_, _regarding_, _as regards_, _with regard to_, _as to_, _as for_, _about_, _of_, _on_.
Examples.--_Pri mia lerteco, mi povas diri_ ... = Concerning my skill, I can say ... (In this sentence it will be observed that any of the above meanings of _pri_ instead of "concerning" will give the exact sense.) _Pri tio ne diru vorton_ = As to that, don't say a word. _Ne pensu pri ĝi_ = Do not think of (about) it. _Li parolis pri la pentrarto_ = He spoke about (the art of) painting. _Ili miregis pri_ (or, _je_) _lia kolero_ = They were astounded at (about) his anger. _Sed pri ŝia fratino, ni povas diri, ke_ ... = But of her sister, we can say that ... _Tio estas verko pri la politiko_ = That is a work on politics. _Vi estas prova pri tio_ = You are right in that.
As a prefix, _Pripensi_ = To think about, to reflect.
See par. 258 (_a_) as regards the use of the prepositional expressions _rilate_, _koncerne_.
Pro always relates to the cause or reason for something happening or being done. Do not confuse it with por.