even if 表示“即使”“纵然”“就算”“哪怕”，在真实条件句中不用虚拟。
They’ll stand by you even if you don’t succeed. 即使你不成功，他们也会支持你。 Even if it rains tomorrow, we won’t change our plan. 即使明天下雨，我们也决不改变计划。 even if从句的内容通常是假设性的用虚拟语气；
Even if he had the money, he wouldn’t buy it. 他即使有钱也不会买它。 even though “尽管”“虽然”，引导的从句内容往往是真实的，有时也用虚拟。 He went out even though it was raining. 尽管在下雨，他还是出去了。
Even though we all tried our best, we lost the game. 虽然我们已尽了最大的力量，但还是输了。 Nobody could save him even though Hua Tuo should come here.即使华佗在世也救不了他。(事实:华
佗不在世)
B．在whatever/ whichever/ whenever/ whoever/ wherever/ however以及no matter + wh-等引导的让
步状语从句中，从句虚拟语气结构为： 表示现在或将来:may/might + V原形
We will finish it on time no matter what may happen.不管发生什么事，我们都要按时完成。 We will find him wherever he may be.无论他在哪里，我们都要找到他。
I will wait for him no matter how late he may come.不管他来的多么晚，我都会等他。 No matter what his social position (might) be, a man is equal in the eye of the law.
一个人不论其社会地位如何，在法律面前都是平等的。
However hard it might rain rains, we shall go there together. 不管雨下得多么大，今晚我们还是要去那里。 表过去:may/might +have done（主句结构不限）
You mustn't be proud whatever great progress you may have made. 不管你取得了多么大的进步，你
也不能骄傲。
We must respect him no matter what mistakes he may have made. 不管他犯过什么错误，我们必须尊
敬他。
C．though, although等引导的让步状语从句中，从句虚拟语气结构为 should +动词原形，主句结构不限。 Although / Though he should often be late, he is a good student. 尽管他经常迟到，他还是个好学生。 Although / Though he should be secretary, he must obey the rules. 尽管他是书记，他也必须遵守规定。
D．whether…or…
虚拟语气用在由 “whether” 引导的让步状语从句中，从句谓语用: should+ V原形 原句：whether he should be sick or well, he works had. 省略whether的倒装：Be he sick or well, he works had.
（whether 引导的让步状语从句在虚拟语气中，省略whether和should，be提前）
七、 简单句中的虚拟语气
(1) 说话时，为了表示客气、谦虚、委婉而有礼貌，言语常使用虚拟语气。 其虚拟语气的结构形式常为：would / could / might / should +do。 Would you mind my shutting the door? 你介意我把门关起来吗?
You should always learn this lesson by heart. 你要把这个教训牢记于心。 I should agree with you.我本该同意你的观点。(委婉的不同意) (2) 表示“祝愿”时，常用may +主语+ do。 May you have a good journey!祝你一路顺风。 May your youth last forever!祝你青春永驻。 May you be happy! 祝您快乐！
(3) 表示强烈的\愿望\、\祝愿\的感叹句，常用do。 God bless us. 上帝保佑。 Long live the Party!共产党万岁！ God bless you! 上帝保佑你！ Success attend you! 祝你成功！ The lord save us! 愿主救我们！ (4) 习惯表达中常用的虚拟语气。
情态动词用于虚拟语气，部分情态动词的过去形式（could, might, should, would），可以用于非真实条件句以及其他结构中表示虚拟语气。 ① 提出请求或邀请。
Would you like to have a talk with us this evening?今天晚上来跟我们聊天好吗? Could I use your bike now?我可以用一下你的单车吗? ② 陈述自己的观点或看法。
I should be glad to meet you.见到你我会很高兴。 I would try my best to help you.我会尽力帮助你。 ③ 提出劝告或建议。
You'd better ask your father first.你最好先问一问你的父亲。
You should make a full investigation of it first.你应该先全面调查一番。 ④ 提出问题。
Do you think he could get here on time你认为他能按时来吗? Do you expect he would tell us the truth?你期望他会告诉我们真相吗?
⑤表示对过去情况的责备时，常用虚拟语气。其虚拟语气的结构为:情态动词+ have done。 You should have got here earlier. 你早该到这里了。 You should have returned it to him. 你早该把它还给他了。
(完整版)虚拟语气用法总结及详细解析,推荐文档
