我们知道,说话的语气可分为陈述、疑问、祈使、感叹及虚拟等。虚拟语气是指“不符合或不一定符合事实的、假设的”语气。英语的虚拟语气是以虚拟条件句为典型。其他包含让步从句、方式从句的句子以及带有虚拟意义的句子在某种意义上都是由虚拟条件句变化而来的。首先谈谈虚拟条件句、一、虚拟条件句的三种形式: 1.现在时态形式:与语法时态相一致、 We know that the tone of speech can be divided into statements, questions, imperatives, exclamation, and imaginary. Subjunctive mood refers to the “fair or hypothetical” tone that does not meet or does not necessarily correspond to facts. The virtual tone of English is typical of virtual conditional sentences. Other sentences that contain concession clauses, style sentences, and sentences with virtual meanings are, in a sense, changed from virtual conditional sentences. First of all, talk about the three conditions of the virtual conditional sentence and the virtual conditional sentence: 1. The present tense form: consistent with the grammatical tense,