1. As the/an saying goes 俗话说......2. As an old saying goes 古人云......；有一句老话说......用法如下：1. As the/an saying goes that where there is a will,there is a way. 俗话说有志者事竟成。2. As an old saying goes," opportunity is for the ready man".俗话说“机遇总是给有准备的人”，“有备而战，战无不胜”。