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虚拟语气讲解：
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。
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