2、气在名词性从句中的应用。即用来表示要求、建议、命令、提议、意愿等的名词性从句。8.不清惜条件的虚拟语气。★★★虚拟语气在条件句中的用法列表如下：相关时态主句形式从句形式例句与现在事实相反Shouldwouldcouldmight+do（动词原形）过去式（be动词各人称都用were）If I were you, I should would make full use of my time to study.与过去事实相反Shouldwouldcouldmight+have done（动词过去分词）Had+done(过去分词)If you had come ear
3、lier, you would have met him.与将来事实相反Shouldwouldcouldmight+do（动词原形）1.过去式（be动词各人称都用were）2.should+动词原形3.were to +动词原形If it should rain tomorrow, the crops would be saved.★★★注意四个情态动词的用法：1. 若表示在某一假设的条件下，必然而然就会发生某事，第一人称可用should或would, 而二、三人称只用would.2. 若表示在某一假设条件下就能够干某事，各人称都用could.3. 如果表示在某种假设条
4、件下有可能会发生某事，各人称都用might.★★★虚拟语气倒装请看典型考题：__________ your address，I would have written to you. A. Did I knowB. Were I to knowC. Had I known D. If I should know此题应选 C。这是虚拟语气的倒装形式。当虚拟条件句中含有 were，had，should，could等动词时，可以将if省略，然后将 were，had，should，could 等词移至句首：1. If he should fail，he would kill hims
5、elf. →Should he fail，he would kill himself. 万一失败，他就会自杀。2. If I were you，I would do it at once. →Were I you，I would do it at once. 假若我是你，我就会马上做。3. If I could do it，I would. →Could I do it，I would. 要是我能做此事，我一定会做。4. If he had seen you yesterday，he would haveasked you about it. →Had he seen you
6、 yesterday，he would haveasked you about it. 他昨天要是看到了你，他就会问你这事了。注意：顺便说一句，以上移至句首的 had不一定是助动词，如果是实义动词也可倒装5. If he had money，he would buy a car. Had he money，he would buy a car. 他要是有钱，他就会买一辆小车。将下列倒装句恢复正常：a. Were it not for the fact that you are ill, I would give you a good beating.要不是因为你有病这一事实,
7、我就会狠揍你一顿。b. Had he asked me, I would have given him my advice.要是他请求我的话，我就会给他建议的。c. Were it to snow tomorrow, the hunter would not go hunting.万一明天下雪，猎人就不去打猎了。★★★错综虚拟语气How I wish I had studied harder when I was in school!If you had, you ____ work into late
