虚拟语气包含两种：一种指与事实相反或不可能发生。“虚拟条件句+虚拟主句”的结构都属于这一类。另一种指与事实实际是否发生没有直接关系。

虚拟语气有哪些用法

1.虚拟条件句的三种基本类型：与现在事实相反、与过去事实相反、与将来事实相反。

2.与现在事实相反，条件从句的谓语用过去式，主句谓语用should（would,could,might）+动词原形。

3.与过去事实相反，条件从句的谓语用过去完成时（had+过去分词），主句谓语用should（would,could,might）+have+过去分词。

4.与将来事实相反，条件从句的谓语用过去式（be通常用were），主句谓语用should（would,could,might）+动词原形。

虚拟语气语法知识

英语中的各种语气：

1，陈述语气：I like apples 我喜欢苹果。（肯定）

I don't like apples我不喜欢苹果（否定）

2，疑问语气：What's your name？你叫什么名字？

Do you like apples?你喜欢苹果？

3，祈使语气：Open the door 打开门

3，虚拟语气：If I were you, I would forgive her如果我是你，我将会原谅她。

虚拟语气结构讲解：

1，与现在的事实相反：从句用过去式，主句用would/could/might/should/+动词原形

例如；If I had time ，the classroom would be so clean 如果我有时间，教室将会更加干净。

2，与过去的事实相反：主句用would/could/should/might/+have+ done , 从句中过去完成时

例如；If I had finished my homework ，I would have passed that test

如果当时我完成了我的做，我就能够通过我的考试了。

3，与将来的事实相反：主句用：should/could/would/might/+动词原形，从句用should do （可能性最大），过去式（可能性一般）were to do （可能性最小）

If it should snow tomorrow，I would make a snowman 如果明天下雪，明天我将对一个雪人

If it snowed tomorrow，I would make a snowman 如果明天下雪，明天我将堆一个雪人

If it were to snow tomorrow ，I would make a snowman 如果明天下雪，我将对一个雪人

虚拟语气的倒装形式

If I had worked hard ，I would have finished it 如果当时我努力工作，我就已经完成它了。

=Had I worked hard ，I would have finished it

If it should snow tomorrow ，I would make a snowman 如果明天下月，我将会对雪人

Should it snow tomorrow ，I would make a snowman

If it were to snow tomorrow ，I would make a snowman

=Were it to snow tomorrow ，I would make a snowman

虚拟语气在各类从句中的用法

1，I lifted the chair so that I could be seen 我举起椅子就是为了能被看见 （状语从句）

状语从句中常见连接词：as if 好像，as though 好像，in order that 为了，for fear that 生怕，

In case 万一 lest 以防万一

2，主语从句：It is +形容词 +that+ 主语+（should+动词原形），should可以省略

It is very important that we （should ）study English every day 我们每天学习英语是很重要的。

4，宾语从句；I wish I would visit the moon我祝愿自己能有一天拜访月球。

I would rather you had helped me out two days ago 我倒想你能在两天前帮助我

宾语从句常见句型：主语+常见动词+that+ 主语+ should+动词原形

I suggest that you should do your homework 我建议你应该做你的作业。

表语从句；He looked as if he had been here for many years 他看起来好像已经很多年了。

同位语从句：

I make a proposal that we should hold a meeting next week 我提议下周召开一次会议

虚拟语气常见词汇：demand 要求，require 要求，proposal提议，advise 建议，order 命令，suggest建议

虚拟语气的其他用法：

祝愿：Long live peace 和平万岁

It is （high）time that+ 主语+ should/过去式

It's time that we had a break 我们早该休息了

It's （high）time that we should protect ourselves 我们是时候保护我们自己了。