中文摘要：

汉语的假设标记是一种重要的虚拟范畴，可以出现在句首、谓头和句尾3个句子敏感位置上。假设句的构成受到语义上的约束：结论分句必须携带[＋主观性]的语义特征，才能与假设标记形成语义上的和谐。实现结论分句主观化的手段主要有4种：语音调节、句末语气词、情态标记和心理动词。

英文摘要：

The hypothetical markers are important subjunctive category which can occupy sentence head, predicate head or sentence end. In Chinese the hypothetical sentences have their own semantic restraints that the apodosis must have the semantic feature of [＋ subjectivity] to achieve the semantic a harmony. The subjectivity of the apodosis can be realized by four linguistic means, as which are phonological modifications, sentence-final particles, modal markers and mental verbs.