Zengwen Song  and  Xiaoli Wan

ABSTRACT: The “Ruguo(如果)” sentence refers to a conditional complex sentence connected by the hypothetical association word “Ruguo(如果)”. The counterfactual “Ruguo(如果)” sentence includes subjective and objective counterfactual sentence. The judgment of subjective counterfactuality depends on semantic recognition and logical derivation. According to the objective truth and falsehood of the previous and last clause, we can divide the subjective counterfactual “Ruguo(如果)” sentence into 4 categories: A true B false, A true B true or false, A true or false B true, A true or false B false. The pragmatic deriving mode can be summarized as containing both derivation and implicit derivation. The subjective counterfactual “Ruguo(如果)” sentence has the function of expressing stance, including explicit analogies and implicit negation.