stand to reason   (TTS發音)

follow as a matter of course理所當然地（會）做

    If he supports the trade unions，then it stands to reason that he will vote Labour. 如果他支持工會的話，那麼他理所當然會支持工黨。

    Joe is intelligent and studies hard；it stands to reason that he will pass the examination. 喬既聰明又用功，他考試肯定會及格的。