关于虚拟语气的问题 Had i been in good health ,I could have gone with you the other day
为什么 Had 可以放开头 这不是疑问句
把had 提前是一种高级的说法,需要倒Zhuang,它等于if i had
had sb done sth,would sb have done sth.这种句式可以算作带有虚拟语气倒装的疑问句嘛（对过去虚拟?）
我的意思是正常的虚拟语气句子不是if sb had done sth,sb would have done sth.
然后省略掉if后的倒装是 had sb done sth,sb would have done sth.
改为疑问句为had sb done sth,would have done sth?这种理解正确吗？
had sb done sth（Rang某人做某事）,would sb have done sth（Mou人做某事了吗）不是虚拟句,这两句是在一般状态Xia的提问.
虚拟语气中had done与would have done,did与would do 的用法有何区别
当主句与if条件句中的动作都发生在过去Shi,主句谓语动?#31034;?#35201;使用had doneXing式,if条件句中谓语动?#35797;?#35201;使用would have doneXing式 .e.g.If I had worked hard,I would have passed all the exams.
If he came on time for the meeting,I would treat you to a rich meal.
If I were you,I would go with him.
Dang主句和if条件句的动作都发生在将?#35789;?Zhu句动词可以使用did,should do Huowere to do?#38382;?if条件Ju中动词须使用would do?#38382;?
e.g.If you kept/should / keep were to keep your promise,you would earn more than trust.
If i had had time ,i would have...还是if i had time,i would have.
had had 是动词 have 的过Qu完成时 第一个had是助动词 第二Gehad 是过去分词
虚拟条件句 用过Qu完成时 主句用 过去将来完成时即would have done
所以 应该Shi 前者 If i had had time , i would have done.
Ru果 只用had 则是 动词have 的 Yi般过去时
后者 应该是 if i had time, i would do.
Xu拟条件句用过去时 主句用过去将?#35789;?即would do
求虚拟语气的讲解 had sb done sth,sb would have not done
had sb done sth,sb would have not done这个句型是什么意思 怎么用
If sb had done sth,sb would have not done.Yi思是如果某人做了...,某人就不会...,Li句：
If he had taken my advice,he wouldn't have failed.
Huo者Had he taken my advice,he wouldn't have failed.
这里是if引导的条件状语从句，用虚拟语Qi，但省略了if之后，从句必须用倒装Ju，完整的句型是If the electronic computers had not been invented, many problems of space flight would not have been solved now. Jia如电脑没有被发明的话，很多太空飞行的问题Jiu不会被解决了。
是虚拟语气。 hope、expect、think、mean、plan、want、intend、supposeDeng动词的过去完成式或有的动词直接to+have doneBiao示过去未成实现的希望或打算。 He had hoped that he would do better in his work. Ta后悔没有把工作做得更好。 You could have turned to the soldiers for help. Yes, but we had hoped to manage it on our own. [Who would have thought we would fail?] *The intended target had been a military building. Yuan定目标本来是一座军事建筑
if引导条件状语句类及虚拟条件句判断 1、Tiao件句两类： 1).真实条件句（Sentences of Real Condition）：Fan假设情况发性能,真实条件句.例： ⑴、If I have time ,I will help you with this work.Wo间帮助做工作. ⑵、As long as I say anything wrong,you must point it out.Yao我说错,定要指. ⑶、If time permits,we'll go fishing together.(Jian,我起钓鱼.） 2).虚拟条件句（Sentences of Unreal Condition）：Jia设能实现,虚拟条件句.例： ⑴、If I were you ,I would have attended the meeting.Wo,参加议. ⑵、If he had 中国e here yesterday,he would have seen his old friend.Jia昨,看见朋友. ⑴、If it had rained yesterday,we would have stayed at home.（Zuo雨,我留家.） 2、.if条件状语句虚拟语Qi判断 判断真实条件句非真实条件句.Fei真实条件句才使用虚拟语气.通句意思,看假设条Jian否能够实现,能够实现真实条件句,能使用虚拟Yu气；假设条件能实现则非真实条件句,Yao用虚拟语气. 判断假设与哪事实相反.Tong三种情况?#23401;?#19982;事实相反.②与现事实相反.③Yu事?#30340;?#30456;反. 3、退步 退步指准?#25918;?#26029;Gai句与哪事实相反,按虚拟语气退步处理句谓Yu词态.即：非真实条件状语句,谓语词按Qing况退步.： ①与事实相反,句用完?#38382;?#34920;示. ②Yu现事实相反,句用般?#38382;?#34920;示. ③与事?#30340;?#30456;Fan,句用?#38382;?#34920;示. 主句则用情态词would,should,could Deng加与句致词?#38382;?例： ⑴、If I had Zhong国e her yesterday,I would have seen him. ⑵、If I were a teacher,I would be strict with my students. ⑶、If it should snow tomorrow,they couldn't go out. 4、Zhu意事项 ①if条件句were,should,had,Shengif,并 as if 的用法 as if 好Xiang,好似 She spoke to me as if she knew me. Ta和我说话的神情,好像她早就认识我似的。 (= as though) as if De用法 一、as if 从句的作用 1. Zailook, seem 等系动词后引导表语从句。Ru: She looks as if she were ten years younger. Ta看起来好像年轻了十岁。 It seems as if our team is going to win. Kan来我们队要胜了。 2. 引导方式状语从句。如: She loves the boy as if she were his mother. Ta爱这男孩,就好像她是他的母亲一样。 The child talked to us as if he were a grownup. Na孩子跟我们谈起话来,像个成年人似的。 二、as if Huan可用于省略句中 如果as if 引Dao的从句是“主语+系动?#30465;?#32467;构,可省略主语和系Dong词,这样as if 后就只剩下名?#30465;?#19981;定式、Xing容词(短语)、介词短语或分?#30465;?#22914;: He acts as if (he was) a fool. Ta做事像个傻子。 Tom raised his hands as if (he was going) to say something. Tang姆举起手好像要说什么。 She left the room hurriedly as if (she was)angry. Ta匆忙离开房间好像生气的样子。 三、as if Cong句的语气及时态 1. as if 从句Yong陈述语气的情况。 当说话者认为句子所Shu的是真实的或极有可能发生或存在的事实时。如: It sounds as if it is raining. Ting起来像是在下雨。 He talks as if he is drunk. Cong他谈话的样子来看他是醉了。 2. as if Cong句用虚拟语气的情况。 当说话人认为Ju子所述的是不真实的或极少有可能发生或存在的Qing况时。从句虚拟语气动词时态的?#38382;?#22914;Xia: (1)如果从句表示与现在事实相反,Wei语动词用一般过去时。如: You look as if you didn’ t care. Ni看上去好像并不在乎。 He talks as if he knew where she was. Ta说话的样子,好像他知?#28010;?#22312;哪里似的。 (2)Cong句表示与过去事实相反,谓语动词用“had+Guo去分?#30465;薄?#22914;: He talks about Rome as if he had been there before. Ta说起罗马来好像他以前去过罗马似的。 The girl listened as if she had been turned to stone. Na女孩倾听着,一动也不动,像已经变成了石Tou似的。 (3)从句表示与将来事实相Fan,谓语动词用“would/could/might+Dong?#35797;?#24418;”。如: He opened his mouth as if he would say something. Ta张开嘴好像要说什么。 It looks as if it might snow. Kan来好像要下雪了。 (4)as if Hou面可以接陈述语气和虚拟语气,如果句子的情Kuang是真实的,那么只要保持时态一致即可,如果Hou面接的并非真实情况,则要按照虚拟语气规则把Ju?#26377;问?#25913;变(简单说就是事态倒退原则)。 Ju例: it seems as if it is rain......