虚拟语气(Subjunctive Mood) 虚拟语气用来表示说话人的主观愿望或假想,所说的是一个条件,不一定是事实, 或与事实相反 .虚拟语气在非真实条件句中的应用 1)时态:可以表示过去,现在和将来的情况。它的基本特点是时态退后。 a.同现在事实相反的假设

if引导的虚拟条件句 倒装的If虚拟句 wish引导的虚拟句 as if /though 名词性从句中要求用虚拟语气的动词 虚拟语气特殊句型 含蓄条件句

《大学英语语法》课程电子教案（PPT课件）04 虚拟语气（subjunctive mood）、情态动词（modal auxiliary）

定语从句、虚拟语气、主动语态与被动语态、动词不定式、动名词、分词

表示动作或状态不是客观存在的事实，而是说话人的主观愿望，假设或推测等

一、与现在事实相反的假设 二、与过去事实相反的假设 三、与将来事实相反的假设 四、错综时间条件句

1. If you had come earlier, you the famous scientist a could be met b. might meet c would have met d. would meet

三种基本形式 If had a bike.I would lend it to you(f从句用过去时,主句用 should/ would/ could/ mighti不定式) If he had been here he would have helped you(从句过去完成时,主句 should would/ could/ might+不定式完成时) I would do it some other wa(从句用 should/ were to3主句用 should/woud could /might+不定式)