This paper mainly discusses the pragmatic nature of rhetorical questions and their semantic pragmatic conditions.The paper first explains the close relationship between the semantic expression of rhetorical questions and skepticism,pointing out that negative effect is the motivation for invoking suspicion principles such as"to disbelieve the good and to believe the bad",and that rhetorical questions are a kind of mirative expressions.Then,on the basis of previous research results,the paper summarizes the semantic and pragmatic conditions of rhe...