原创《情态动词和虚拟语气易错点》：这是一篇与情态动词论文范文相关的免费优秀学术论文范文资料,为你的论文写作提供参考。
一、若条件句中有were,had,should,可把if省略,而把were,had,should放在主语前,形成倒装结构.否定句中not放在主语后.
Had you not come late / Had you come earlier, you would have caught the bus.
二、but for（要不是）,without（假若没有）,otherwise（否则）等含蓄条件虚拟,句子的时态要依据具体情况而定.
Without electricity（等于If there were no electricity）, life would be quite different today.（从today可知主句是对现在的虚拟,用would do的形式）
I was ill that day. Otherwise,I would have taken part in the sports meeting.（从that day可知是对过去的虚拟,用would have done的形式）
三、错综时间条件句中,动词的形式要根据它所表示的时间作出相应的调整.
If you had followed my advice earlier, you would be better now. （条件句是和过去事实相反的虚拟,用had done的形式；主句是和现在事实相反的虚拟,用would do的形式）
四、用于名词性从句中.
1. 用于宾语从句中.
①用于表示建议、愿望、命令等词后的宾语从句中,常见的动词有：demand,order,require,insist,suggest,propose,advise等.宾语从句中的虚拟语气结构为“should+动词原形”,should可以省略.
注意：当suggest表示“暗示,表明”,insist表示“坚持认为,强调”时,suggest,insist后的宾语从句谓语动词不使用虚拟语气,应使用陈述语气.如：The man insisted that he had never stolen the money.
②在would rather后的宾语从句中,后面的动词用过去式（和现在或将来的事实相反）或过去完成时（和过去事实相反）.如：I would rather you had told me the news yesterday.（和过去事实相反）
③wish后的宾语从句中,表示对现在情况的虚拟,从句用动词过去式或were；表示对过去情况的虚拟从句用“had+过去分词”；表示对将来情况的虚拟,从句用“would+动词原形”.如：He knew that he shouldn’t have done it； he wished he hadn’t done it.（对过去情况的虚拟）
2. 用于主语从句“It is desired / suggested / proposed / necessary / important / strange / natural / a pity + that从句”,从句中的谓语动词用“should+动词原形”,should可以省略.如：It is strange that he （should） have acted toward his parents like that.
3. 用于表语从句和同位语从句中.
在suggestion,proposal,order,plan,idea,request,advice等名词后的表语从句和同位语从句中要用虚拟语气,即“（should）+动词原形”.如：We all agreed to his suggestion that we （should） go to Dalian for sightseeing.
4. 用于其他句型中.
①在“It is （high/ about） time （that）”句型中,从句常用过去式,有时也用“should+动词原形”,意为“该是等的时候了”.如：Jack is a great talker. It’s high time that he did / should do something instead of just talking.
②在if only引导的感叹句中,用过去时表示和现在事实相反,用过去完成时表示和过去事实相反,用“would / could+动词原形”表示和将来事实相反.如：If only I had followed your advice.（和过去事实相反）
情态动词论文参考资料：
结论：情态动词和虚拟语气易错点为关于本文可作为相关专业情态动词论文写作研究的大学硕士与本科毕业论文情态动词的用法口诀论文开题报告范文和职称论文参考文献资料。
