虚拟语气的语法.doc

虚拟语气Subjunctive mood语气及语气种类（1）证气，指的是一种动词的形式用来表示说话者的意图或态度2）在英语中，语气有三种：① 直陈语气：表示所说的话是个事实如：France lies on the wind-ward side of Europe.② 祈使语气：表示说话人所说的话是请求或命令如：Make yourself at home 请别客气！ Don’t be late!③ 虚拟语气：表示说话人所说的话是一种主观的愿望，假想或建议等如：1. We only wish ue wuld help2. Lf there were no graity （地心引力）we sheul not be able to walk.3. He suggests that ue shoald all go to see the film.一、虚拟语气在条件句中（虚拟条件句）虚拟条件句所表达的是一种假设或者是不大可能发生的情况1）与现在事实相反的虚拟条件句虚拟语气用在与现在事实相反的条件句中，条件从句的谓语动词要使用动词的过去形式（be用were），结果主句的谓语使用“shoulol（第一人称）/would（第二、三人称）＋V（动词原形）”① eg: If we left now. we shoudd arrite in good limo② If I uere you, I should refused the money.③ Euen if he had the money, he wouldn’t buy it.（2）与过去事实相反的虚拟条件句虚拟语气用在与过去事实相反的条件句中时，条件从句的谓语用“had+-ed”，结果主句的谓语用“should/would+Vhaoe+-ed”.如：① We should have dmpped the by if we had had tim.② If they hadn’t gone on vacation, their house souldn’t have been broken into.注：1. “Were”也可以用来表示与过去事实相反Eg: If I weren’t busy ,I would haoe gone.2.表示过去时间的假设也可用虚拟语气，“should hace+-ed”这种虚拟式所表达的动作并非完全不可能发生，它只表示一种偶然性，并且常和直陈语气连用，但也可以与虚拟式连用。

eg: You can imagine（设想）what would have happened to her if she should have told the truth.3.美国大众常用“would have+-ed”来表示与过去事实相反的假设eg: If these sleeplessness （失眠）would have been allowed to go on, she would have collapsed（崩溃）（3）与将来事实相反的虚拟条件句虚拟语气用在与将来事实相反的条件句中时，条件从句的谓语动词使用动词的过去式形式（be的过去或用were），结果主句用“should / would+V”如：① If you dropped the glass, if would break. ② What would happen if I put the paper on the fire?注：1. 在无上下文时，下面的“rained”e 歧意，可能是虚拟语气，也可能是表示过去习惯的直陈语气eg：If it rained, we would stay indoors playing cards.2.在与将来事实相反的条件句中，其条件从句的谓语也可以用“were to +V”.这种虚拟形式比较正式，多用于书面语。

eg：① If he were to come, what would we sag to him? ② If you were to come tomorrow, I might have time to see you.3.在与将来事实相反的条件句中，条件从句的谓语也可以用“should+ V”这种形式不强调意愿，只强调一种有偶然实现的可能性eg: ①If he should see me, he would know me. ②If we should catch the ringleaders, it would be a remarkable（卓越的）a chieoement（成就）4. 下面这种形式往往有不为人所欢迎的含义eg: ①If it should rain tomorrow, we should have to put off the match. ②If he should go away, I shoud be grieoed （悲伤）5. 有时我们可以使用would代替should以避免重复eg：If you would be interested, I should be very glad to send you a copy of my book.（4）虚拟条件句用于倒装在书面用语中，条件从句可以省略“if”而将谓语中的过去式“werehad或should移到主语之前。

如：① Were you in my position（位置），you would do the same.（=If you were in my position, you would do the same）② Had he been in your position, he woald probably have done the same.（＝If he had been in your position he would probably hace done the same）③ Should they attack（攻击）us, we would wipe （消灭）them out completely（完全地）（＝If the should attack us……）注：在虚拟形式中除了“were / had / should”可移至主语之有以外，“did / would /wuld”等也可移至主语之前构成省略“计”的倒装形式5）错综虚拟条件句（条件从句与结果主句所表达的时间不一致）当条件从句与结果主句表示的时间不一致时，虚拟语气的形式，要做相应的调整如：① If I had spoken to him yesterday , I should know what to do now. ② If father hadn’t sent me , I shouldn’t be here注：在条件句中如果使用“If I were……”形式，结果主句可以使用表示任何时间的虚拟形式。

eg: If I weren’t busy, I would have come were 用来表示过去If I were you, I would go （were用来表示现在）（6）含蓄条件句虚拟条件从句中的从句有时省略或只暗含在上下文中，这种句子叫做含蓄条件句含蓄条件句大体可分为两类：1.条件句暗含在短语中如：条件暗含在介词短语中：without gravityBut for your help we couldn’t have succeeded in the experiment（实验）暗含条件是：but for your helpI am really very busy, otherwise（否则）I would certainly go there with you条件暗含在“other wise……”中2. 条件暗含在上下文中如：I wouldn’t have done it （可能暗含“If I were you”） I would have bought it （暗含条件是“If I had had the monay”）注：在不少情况下虚拟式已成为习惯用法eg: I could go on for another two hours（7）省略结果主句的虚拟条件句虚拟条件句如果省略结果主句，则常表示一种不可能实现的愿望，这种条件句常用“if only”来引导。

如：If only you would to listen reason 你要是讲理就好了 ② If only he were here 他要是在这儿就好了③ If only I had never married④ If only I could smash the ground with my fist and make the oil flow（8）情态动词用于虚拟语气有不少情态动词也可用于虚拟语气如：① If I hadn’t wonder you, you could have been killed ② I couldn’t be angry with him if I tried③ May you live a long and happy life May 用于表示祝愿（9）虚拟语气用于when 等引导的条件从句虚拟条件句中的条件句，除了用“if”外，还可以用when /unless/suppose /as if （就像……一样）/ for fear / in case等引出如：① The peasants prepared to feed the city② When it should be freed（解放）③ Unless I were well I couldn’t be at school④ Suppos you uere given a choice to study in America, would you aceept?二、虚拟语气用在主语从句虚拟语气除了用在状语从句之外，也可用在主语从句中，虚拟语气的形式应该是“should+V. /shoutd+have+-ed”（在美国英语中should 可省略）, “should”在此是时态助动词，本身无实际意义，这样的主语从句一般由“that”引导，常用在以“it”作为形式主语的“it+is / was+important / necessary / desirable（称心的，直得向往的）/imperative（绝对必要的）/ advisable（可取的，行当的）＋that……句型中如：① It is important that we should speak politely② It is imperative that we （should）practise critictsm and self-criticism.③ It isn’t necessary that everyone be a scientist.注：这种结构中也可用陈语气eg：It was important that he made a successful experiment last week.三、虚拟语气用于宾语从句中虚拟语气用于宾语从句中，有三种情况：（1）用于动词“wish”之后，这样的句子常省略that来表示愿望。

宾语从句的谓语用过去时，表示与现在事实相反，使用过去完成时，表示与过去事实相反如：① I wish I were。