关虚拟的结构怎么理解虚拟语气……条件句中怎么用虚拟我知道,但是混合虚拟条件句又是什么啊-A-（语法书我也有的,被解释的好

关虚拟的结构
怎么理解虚拟语气……条件句中怎么用虚拟我知道,但是混合虚拟条件句又是什么啊-A-（语法书我也有的,被解释的好麻烦…想问大家当时学的时候有什么好理解的办法……）
虽说我也想不理的……但是没办法要考试啊

1.虚拟条件句
l 英语中的条件句(condition clause) 可以分为真实性条件句和非真实性条件句,主要由连接词if引导.非真实性条件句用以表 示不可能实现的愿望、想象、建议、目的或极不可能发生的事情.对现在、过去、将来的事实进行虚拟时,主句和if从句中的谓语动词形式列表如下：
(一)对现实进行虚拟
l1.If I were a billionaire,I would buy you a villa.如果我是亿万富翁,我就给你买别墅.
l2.If she had more money,she would set up a school of her own.如果她有更多的钱,她就建一所自己的学校.
(二) 对过去事实进行虚拟
l1.If you had followed the teacher’s advice,you might have passed the test.
l2.If she had told me the truth,I would have helped her.
（三）对将来情况进行虚拟
l1.If it should rain tomorrow,we wouldn’t go to the sea.
l2.If he were to give the lecture tomorrow,he would spend hours preparing for it.
2.倒装虚拟语气
l条件句中谓语含有助动词were,had或should时,可以省if,将were,had或should移至主语前面,构成倒装句.
lWere they to arrive before we depart tomorrow,we should have a wonderful dinner party.
(If they were to arrive ...)
l Had he worked harder,he would have got through the exam.
(If he had worked harder,he would have got through the exam.)
l Should he fail again,he would kill himself.= (If he should fail again,he would kill himself.)
3.错综时间的虚拟语气
l前面介绍的虚拟语气的三种基本形式中,主从句谓语动词发生时间一致.如果动词发生的时间不一致,则应根据实际情况适当调整：
l1.You could answer most of the questions now if you had reviewed the lessons last night.
(从句虚拟过去,主句虚拟现在.)
l2.If I hadn’t stood under the ladder to catch you when you fell,you wouldn’t be smiling now.
(从句虚拟过去,主句虚拟现在.)
l3.If I were not busy,I would have come and visited you.
(从句虚拟现在,主句虚拟过去.)
4.含蓄条件句中的虚拟语气
(一) 由介词without,but for(要不是) 引导的句子
l1.Without the distraction of TV,they might sit around together and talk to one another.
l2.But for your help,I wouldn’t have finished my report.
(二) 由表示转折语气的词语otherwise引导的句子
lI was exhausted last night.Otherwise I would have gone to theatre with you.
(三) 从句中没有明确表示,需根据上下文判断的句子
lAnyone in his position would have done the same.
5.名词从句中的虚拟语气
l 虚拟语气除了在非真实性条件句中应用以外,也用于特定的名词从句中,句中含有表示愿望、建议、命令、请求等语气的标志词,这些从句在句中无论作主语、宾语、表语或同位语,谓语形式均为should+动词原形,should可省略.
(一)从句作主语
1.It is + v-ed that +subject+(should) + v.
l It is suggested that a committee of three be set up.
2.It is +a.+that + subject + (should) + v.
lIt’s important/urgent that enough money be collected to fund the project.
(二)从句作宾语
l 引导的宾语从句表示愿望、建议、请求的常见动词有：advise,agree,argue,command,decide,demand,desire,direct,insist,move,order,propose,request,require,suggest,urge等.
l Mr.Chairman,I move/propose that the matter be discussed after lunch.
(三)从句作表语
l 引导的表语从句表示建议、请求等常见名词有：advice,demand,desire,motion,order,proposal,requirement,suggestion等.
l My proposal is that we cancel the examination and assign the students to write term papers instead.我建议取消期末考试,让学生写学期论文.
6.其他形式的虚拟语气
(一)在wish引导的宾语从句中,谓语用过去时,表示与现在实相反；谓语用过去完成时,表示与过去事实相反；谓语用助动过去时+动词原形,表示与将来相反.举例如下：
lI wish you hadn’t told me all this.
我希望你没告诉我这件事.
(与过去事实相反)
（二）在as if/as through 引导的从句中,谓语用过去时,表示与现实相反；谓语用过去完成时,表示与过去事实相反.
lHe looked as if he had never had a decent meal.
他看起来好像从来没吃过一顿像样的饭.(表示与过去事实相反)
(三)在if only引导的感叹句中,动词的形式与wish从句基本相同,所表达的语气比wish强.
lIf only he hadn’t resigned!
(四)在would rather,would just as soon,would sooner,would prefer引导的句子中,从句的谓语动词用过去时.
l I'd rather you didn’t make any comment on the issue for the time being.我宁愿现在你对此事不发表意见.
(五)It is (high) time that后的从句中,谓语动词须用一般过去时.
l I think it is (high) time that you made up your mind.
(六)在lest,for fear that,in case引导的从句中,谓语动词的式通常为should+动词原形,should可省略.意为“万一、唯恐”
lI’ll be kind to her for fear that she decide to leave me.