口语，“常言道”用英语怎么说？

qiufeng0299

[/table] [table=100%,#f2dec3]to coin a phrase

something you say before using an expression that has been very popular or used too much

套用一句流行的话;常言道;俗话说


I was, to coin a phrase, gobsmacked! 
套用一句老话，我简直目瞪口呆!


Well, we can't do anything about it now, so“que sera sera”, to coin a phrase.
我们现在也无能为力，所以就顺其自然吧。