13 虚拟语气

→Should it snow tomorrow, we wouldn’t go out.
wish引导的虚拟句
wish + that How I wish If only
did/were 现在 had done 过去 would / might /could do 将来
(1)我要是记得地址就好了。（真可惜我忘了） I wish I remembered the address. (2)要是他没有离开这里就好了。（他已离开）
与将来事实相反的虚拟条件句(通常有时间状语)
If + 主 + did(were to /should do), 主+would/should/ could/might +动词原形 1.如果他明天来的话,我会告诉他这件事。 If he came here tomorrow, I would tell him about it. 2.如果他明天来的话,我会告诉他。 If he were to come here tomorrow, I would tell him.
名词性从句中要求用虚拟语 气的动词
表示“建议，命令，要求”等意义时，名词性从句用(should)
＋ 动词原形。
(1) 建 议 ： 动 词 advise, suggest, propose, recommend ( 名 词
advice, suggestion, proposal, recommendation)
even if/ though, wish, if only等从句的虚拟与它 相同。
将来
1.如果我是你，我就听从他的建议。
If I were you, I would have taken his advice.
从句表示现在，主句表示过去 2.如果你听我的话，现在就不会这么糟糕了。 If you had listened to me, you might not be in such trouble now. 从句表示过去，主句表示现在
气。
I wish (that) ＋ 宾语从句(虚拟语气)
(1)表示愿望与现在事实相反，从句用一般过去时。 (2)表示愿望与过去事实相反，从句用过去完成时。 (3)表示愿望实现的可能性很小，从句常用could/might/would ＋动词原形。
would rather/prefer ＋ that从句(从句用虚拟语气) (1)表示愿望与现在事实相反，从句用一般过去时。 (2)表示愿望与过去事实相反，从句用过去完成时。 注意： 名词性从句表示说话人“强烈”的感情色彩时，从句用should ＋动词原形/should ＋ have done，should 可译为“应该；居然， 竟然”。should 可以省略。
How I wish he had not left.
(3)要是明天下雨就好了。（说话人已预料到明天不会下雨） I wish it would rain tomorrow.
If only
要是„„就好了 = I wish
（1）If only I knew his name now! （2） If only we had followed your advice last time! （3） If only I could see him again next year! （4）要是我们的父母能和我们住在一起就好了。 If only our parents could live with us!
（5）要是我没错过火车就好了.
If only I hadn’t missed the train!
as if /though
区别：
He speaks English as if/ though he is from the USA. 陈述语气 He speaks English as if/ though he were from the USA. 虚拟语气
(2) 命令：名词order, command (3) 要 求 ： 动 词 request, require, demand, ask, insist (名 词 request, requirement, demand)
【注意】 (1)suggest 意为“表明，暗示”时，宾语从句不用虚拟语气。
(2)insist 意为“坚持认为，坚持说”时，宾语从句不用虚拟语
（3）我倒希望他们和我一起去。
I would rather they went with me.
注意：如果表示的事情可能会发生，那么状语从句中的谓语动 词可用陈述语气。 It looks as if you are tired.
过去时 2. It’s (about/high) time +that —— should +v. It’s high time that you went. （1）你该走了。 It’s high time that you were going. It’s high time that you should go.
注意: 在主语＋would (had) rather ＋that 宾语从句中，从句谓 语一般用过去式表示虚拟形式。例如:
（1）我真希望你告诉我真相。
I’d rather you told me the truth.
（2）我宁愿不再见到你。
I’d rather I didn’t see you again.
条件状语的倒装：
如果条件状语中有were, had, should时, 可以倒装成：
Were / Should / Had +主+其他 If I were you, I would try it again. →Were I you, I would try it again. If he had been there yesterday, he would have seen the film. →Had he been there yesterday, he would have seen the film. If it should snow tomorrow, we wouldn’t go out.
3.如果这些天一直没下雨，我们现在就可以进行工作了。
If it hadn’t been raining these days, we should be going on with the work.
从句表示过去进行，主句表示现在进行
注意: 主从句时间不一致情况下的虚拟语气(混合条件句): 有时条件从句中的动作和结果与主句中的动作、发生的时间不 一致，这时动作的形式应根据它所表示的时间加以调整。
It’s time that we went to bed. （2）我们该去睡觉了。
It’s time that we should go to bed.
3. without和but for 构成虚拟。but for要不是 Without sunlight, people’s life would be different from today. But for your help, I wouldn’t have finished the work. Without your help, I would have failed. But for water, it would be impossible to live in the desert.
contest.如果我没有乘错车，我就不会不参加竞赛了。
(3)与将来事实相反的非真实条件句，谓语动词形式如下： 从句：过去时/should+动词原形/were to+动词原形 主句： would/should/could/might+动词原形 If I had enough money next month, I would buy a copy of “ The Advanced Learners Dictionary of Current English”.如果 我下个月有足够的钱，我就会买一本《现代高级英语学习词 典》。
if 引导的虚拟条件句
区别:
If it rains tomorrow, the crops will be saved.
If it rained tomorrow, the crops would be saved.
陈述语气
虚拟语气
与现在事实相反的虚拟条件句 If + 主 + did(were), 主+would/should/could/might +动词原形 1. 如果我是你，我会再试一次。 If I were you, I would try it again. 2.如果我有一百万美元，我会买下这架飞机。 If I had one million dollars, I would buy the plane.
If you hadn’t lent me some money, I couldn’t have bought the new house and most likely I would be still living in the dangerous house now. 假若你不借钱给我，我不可能买下这幢新房，很可能现在还住 在危房里。 （从句说明过去，主句说明过去和现在。）
虚拟语气特殊句型
现在： 过去时 1. would rather that 过去： 过去完成时 未来： 过去时 （1）I would rather you paid me now. （2） I would rather you had gone, too. （3） Don’t come. I would rather you came tomorrow.
与过去事实相反的虚拟条件句
If +主 +had done sth., 主+would/should/could/might +动词完成式（have done） 1.如果他努力学习的话，他就会通过这次考试了。 If he had worked hard, he would have passed the examination. 2.要是当时我和她结了婚的话，那我是很不幸的。 If I had married her then, I would have been unhappy.