虚拟性的英文

语气是以动词形式表现出来的语法特征，它表示说话人对事物所持的态度。1）陈述语气：用来陈述事实的，有肯定，否定，疑问或感叹等形式。Sheisveryclever.Whatfunitistoswiminthelake!Whydon’tyoujoinanEnglishlanguageclubtopracticespeakingEnglish?2)祈使语气:用来表示请求，命令或劝告等。Don’tbelateforthemeeting.3）虚拟语气:：表示所说的内容与事实不符，不是事实或是不可能发生的，只是一种愿望，建议或与事实相反的假设等。真实条件句真实条件句用于陈述语气，假设的情况可能发生，其中if是如果的意思。时态关系句型：条件从句主句一般现在时shall/will+动词原形Ifhecomes,hewillbringhisviolin.典型例题Thevolleyballmatchwillbeputoffifit___.A.willrainB.rainsC.rainedD.israined答案B。真实条件句主句为将来时，从句用一般现在时。非真实（虚拟）条件句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。句型：条件从句主句一般过去时should(would)+动词原形Iftheywerehere,theywouldhelpyou.b.表示与过去事实相反的假设。句型：条件从句主句过去完成时should(would)have+过去分词Ifshehadworkedharder,shewouldhavesucceeded.Thericewouldnothavebeenburntifyouhadbeenmorecareful.IfmylawyerhadbeenherelastSaturday,hewouldhavepreventedmefromgoing.Ifhehadcomeyesterday,Ishould/wouldhavetoldhimaboutit.含义：Hedidnotcomeyesterday,soIdidnottellhimaboutit.Ifhehadnotbeenillandmissedmanyclasses,hewouldhavemadegreaterprogress.含义：Hewasillandmissedmanylessons,sohedidnotmakegreaterprogress.c.表示对将来的假想句型：条件从句主句一般过去时should+动词原形were+不定式would+动词原形should+动词原形Ifyousucceeded,everythingwouldbeallright.Ifyoushouldsucceed,everythingwouldbeallright.Ifyouweretosucceed,everythingwouldbeallright.wish的用法用于wish后面的从句，表示与事实相反的情况，或表示将来不太可能实现的愿望。其宾语从句的动词形式为：真实状况wish后从句动作先于主句动词动作现在时过去时（be的过去式为were）从句动作与主句动作同时发生过去时过去完成时（had+过去分词）将来不大可能实现的愿望将来时would/could+动词原形IwishIwereastallasyou.我希望和你一样高。Hewishedhehadn'tsaidthat.他希望他没讲那样的话。Iwishitwouldraintomorrow.我希望明天下雨就好了。

这个问题有点像“土豆为什么叫土豆，又叫马铃薯”，呵呵^_^

virtual ['v�0�5:tju�0�5l] adj.实质的, 虚拟的fictitious [fik'ti�0�6�0�5s] 虚拟dummy(coil) ['d�0�5mi] 虚拟theorhetical 虚拟

一、概念 [Subjunctive Mood] 中文译作"虚拟语气"。它是一种动词形式，表示说话人的某种假设、愿望、怀疑、猜测、建议等含义。 二、语法结构 1.if结构（非真实条件句——表示的是假设的或实际可能性不大的情况） 与..事实相反 If从句 主句 过去 Had done Would* have done 现在 Were/did Would* do 将来 Should do/were/were to do Would* do 例句：If there hadn’t been much rain in spring, we would have had a good harvest now. [过去] If he smoked less, his cough might be well soon. [现在] If the lecturer should be late, you would have to make a speech first. [将来] 备注： （1）上表中’*’，would都可转换为should、could、might。 （2) 如果为时间错综句的话，左右两栏可互相搭配，排列组合。 例句： He would still be alive today if he hadn’t taken that drug. [与现在事实相反] [与过去事实相反] (3) if可转换为其他形式 例句：Without your advice, our meeting wouldn’t have been so successfully. [过去] （=>可转换为：If there hadn’t been your advice, we …） Your notes are almost illegible (难以辨认的). Notes typed out would be a lot easier to read. [将来] (=> 可转换为：If the notes had been typed out, it would be a lot easier to read.) I should have gone to see Dr. Smith and he might have cured me of the disease.[过去] (=> 可转换为：If he have gone to see Dr. Smith, he ..) 2、wish结构 与..事实相反 过去 Had done 现在 Were/did 将来 Would 备注：可转换为其他形式。 例句：He talks as if (好像) he had done all the work himself. [过去] I wish I were a bird. I wish he handn' done that. I wish I would be rich in the future. 3、should结构 从句中用“should + 动词原形”构成。而且should可以省去。用于此结构的动词有：advise, direct, agree, ask, demand, decide, desire, insist, order, prefer, propose, request, suggest,intend等。 例句：The teacher suggest he (should) read English aloud. 注意：当insist表示“坚持认为”、suggest表示“表明，显示”时，不用虚拟语气。 例句：The look on his face suggested that he was quite satisfied with what I had done for him. He insisted that he was honest. 4、would rather ＋从句 在这种结构中，从句的谓语动词用过去形式表示虚拟。 例句：I would rather you did this instead of me. 5、主语从句中的虚拟语气 1）It be + 形容词 + that ．．．（should）．．． 用于该句型的形容词是：necessary, good, important, right, wrong, better, natural, proper, funny, strange, surprising ． 一些名词也可以用于 在该结构中。如：a pity， no wonder．．．． 2）It be + 过去分词 + that ．．．（should）．．．． 用于该结构中的过去分词是表示“建议、请求、命令”等词的过去分词。如：desired， suggested， requested， ordered， proposed等。 3）It is time（about time， high time）that ．．．（过去式动词形式或should＋动词原形）．．．． It is high time I went home now. = It is high time I should go home now. 6、表语从句、同位语从句中的虚拟语气 在suggestion， proposal， order， plan， idea， advice， decision等需要有内涵的名词后面的表语从句、同 位语从句中，要使用虚拟语气。其谓语动词应用：should＋原形动词。另外连接从句的that不能省 略。 例：My suggestion is that we should go there at once. What do you think of his proposal that we should put on a play at the English evening? 三、使用范围及判断 1、虚拟语气表示一种不能实现的假设。该语法主要用于if条件状语从句。也可用于主语从句、表语从句、宾语从句等。 2、if条件状语从句中虚拟语气的判断 判断是真实条件句还是非真实条件句。只有在非真实条件句中才使用虚拟语气。通过句子意思，看假设的条件是否能够实现，能够实现是真实条件句，不能使用虚拟语气；假设的条件不能实现则是非真实条件句，要用虚拟语气。 判断这个假设是与哪个事实相反。通常有三种情况：①与过去事实相反。②与现在事实相反。③与将来事实可能相反。 3、“后退一步法” 后退一步法是指在准确地判断了该句与哪一事实相反后，按虚拟语气的后退一步法处理从句谓语动词的时态。即：在非 真实条件状语从句中，谓语动词按正常情况“后退一步”。也就是： 1）与过去事实相反，在从句中用过去完成时形式表示。 2）与现在事实相反，在从句中用过去一般时形式表示。 3）与将来事实可能相反，在从句中用过去将来时形式表示。 主句中则用情态动词would, should, could 等加一个与从句一致的动词形式。 例：If I had come her yesterday, I would have seen him. If I were a teacher, I would be strict with my students. If it should snow tomorrow, they couldn’t go out. 四、注意事项 1.if条件句中如有were, should, had，可以省去if，并使用倒装语序。 2、在现代英语中if条件状与从句中的谓语动词如果是be其过去形式一般用were。 3、wish 后面宾语从句中的虚拟语气，按“后退一步法”处理从句的谓语动词。注意：与哪个事实相反，不能以主句的时态为判断依据，而是根据从句的意义判断。

虚拟这里不是虚假的意思，应该叫做仿真，虚拟机，没有基于硬件，而是虚拟出来的机器，但是它实质上方方面面和真实的电脑操作没有任何的区别。操作方法如下；

1、首先运行Virtual PC，在弹出Virtual PC控制台界面下，选择新建。

2、在弹出的界面中，选下一步，在选项中，选中新建一台虚拟机，以基本配置需求创建一台虚拟机。

3、选择自己所需要的操作系统，这里选择windows XP，并点击下一步。

4、配置虚拟机内存，为了得到更好的性能，选择更改分配内存大小，按自己的电脑实际配置进行分配。

5、这样之后就要配置好虚拟机的硬件要求了了，在界面中变会出现一个虚拟机的选项了。