在英语课程的学习中，语法的掌握相当重要，不仅对我们阅读英文文章有好处，还能使我们的英文写作更加出彩。整理了英语语法中的虚拟语气使用方法，希望对大家有所帮助。
May you luck!
If I were you, I'd take them away.
I wish I should have a chance again.
(一)在简单句中的用法
May you be happy.
Have a good journey!
(二)虚拟语气在条件状语从句中的用法：
1. 表示与现在事实相反的情况：
从句：If 主语+过去时(be 动词用 were)
主句：主语+should/would/could/might+do
If I were you, I would take an umbrella.
If I knew his telephone number, I would tell you.
2. 表示与过去事实相反的情况
从句：If 主语+had+done
主句：主语+should/would/could/might+have done
If I had got there earlier, I should/could have met her.
If he had taken my advice, he would not have made such a mistake.
3. 表示对将来情况的主观推测
从句：
① if + 主语 + were to do
② if + 主语 + should/would/could/might+do
③ if + 主语 + did(动词过去式)/were
主句：主语+would+do
If there were a heavy snow next Sunday, we would not go skating.
If he should come here tomorrow, I would talk to him.
4. 错综条件句----即主句和条件从句的谓语动作若不是同时发生
①从句的动作与过去事实相反，而主句的动作与现在或现在正在发生的事实不
符。
If I had worked hard at school, I would be an engineer, too.
If they had informed us, we would not come here now.
②从句的动作与现在事实相反，而主句的动作与过去事实不符。
If he were free today, we would have sent him to Beijing.
If he knew her, he would have greeted her.
5.含蓄条件句
But for his help, we would be working now.
Without your instruction, I would not have made such great progress.
【注意】
(1)特殊情况----省略连接词 If
当虚拟条件句的谓语动词含有 were, should, had 时，if 可以省略，这时条件从
句要用倒装语序，即把 were, should, had 等词置于句首，这种多用于书面语。
Should he agree to go there, we would send him there.
(2)特殊情况---省略主句或者从句
① You could have passed this exam.
② If only I had got it.
(三)虚拟语气在宾语从句中的用法
1. wish 后的宾语从句
a、表示与现在事实相反的愿望，谓语动词用过去式
I wish I had your brains.
b、表示与过去事实相反的愿望，谓语动词：had+done
I wish I had known the truth of the matter.
c、表示将来难以实现的愿望，谓语动词： should/would(情态动词)+ 动
词原形
I wish I should have a chance again.
2. 想要( desire ) 宁愿( prefer ) 坚持( insist )命令( order , comm) 建议( advise ,
suggest , propose,recommend) 要求( dem, require , request , ask)的宾语从句中，无
论主句谓语动词为何种时态，从句的谓语动词都用：(should) + do。
He insisted that all of us (should) be there on time by any means.
The teacher suggested that we (should) clean the blackboard after class.
3. would rather, would sooner, had rather 等之后的宾语从句常表示与客观事实不相符
的一种愿望，故使用虚拟语气。其虚拟语气的结构为：
过去 had + done;
现在 / 将来 (be 动词 用 were; 动词用一般过去时 )
I'd rather you had seen the film yesterday.
I'd rather you were here now.
We'd rather you went here tomorrow.
(四)虚拟语气用在主语从句中的用法
表情绪观点的形容词或名词也要用虚拟语气。如：necessary, important, impossible,
surprising, funny, right,wrong, better, a pity, the shame, no wonder, essential 等。表示惊
奇、不相信、理应如此。
句型：It is.......that +主语从句，从句的谓语动词都要用 (should)+动词原型。
It's necessary that we (should) have a walk now.
It's a pity that Lucy (should) be so careless.
(五)as if / as though 引导的让步状语从句
as if / as though 引导虚拟状语从句表示与事实相反的情况。
She walks as if she were drunk.
They talked as if they had met before.
(六)虚拟语气在表语从句和同位语从句中
表示“决定、主张、要求、建议、命令”等动词相对应的名词(例如 suggestion,
motion, proposal, order, recommendation 等)后面的表语从句和同位语从句常用
“(should)+ do”结构。
My suggestion is that we (should) send a few people to help the other group.
His sole requirement is (was) that the system be adjusted.
The order that we stay where we were was right.
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