subjunctive possibility中文什么意思

虚拟可能性

真势模态

• subjunctive:    adj. 【语法】虚拟的，假设的。 ...
• possibility:    n. 1.可能，可能性。 2.〔常 ...
• there is a possibility that:    又包含一个由

百科释义

Subjunctive possibility (also called alethic possibility or metaphysical possibility) is the form of modality most frequently studied in modal logic. Subjunctive possibilities are the sorts of possibilities we consider when we conceive of counterfactual situations; subjunctive modalities are modalities that bear on whether a statement might have been or could be true?such as might, could, must, possibly, necessarily, contingently, essentially, accidentally, and so on.