虛擬語氣包含兩種：一種指與事實相反或不可能發(fā)生?！疤摂M條件句+虛擬主句”的結(jié)構(gòu)都屬于這一類。另一種指與事實實際是否發(fā)生沒有直接關(guān)系。

虛擬語氣有哪些用法

1.虛擬條件句的三種基本類型：與現(xiàn)在事實相反、與過去事實相反、與將來事實相反。

2.與現(xiàn)在事實相反，條件從句的謂語用過去式，主句謂語用should（would,could,might）+動詞原形。

3.與過去事實相反，條件從句的謂語用過去完成時（had+過去分詞），主句謂語用should（would,could,might）+have+過去分詞。

4.與將來事實相反，條件從句的謂語用過去式（be通常用were），主句謂語用should（would,could,might）+動詞原形。

虛擬語氣語法知識

英語中的各種語氣：

1，陳述語氣：I like apples 我喜歡蘋果。（肯定）

I don't like apples我不喜歡蘋果（否定）

2，疑問語氣：What's your name？你叫什么名字？

Do you like apples?你喜歡蘋果？

3，祈使語氣：Open the door 打開門

3，虛擬語氣：If I were you, I would forgive her如果我是你，我將會原諒她。

虛擬語氣結(jié)構(gòu)講解：

1，與現(xiàn)在的事實相反：從句用過去式，主句用would/could/might/should/+動詞原形

例如；If I had time ，the classroom would be so clean 如果我有時間，教室將會更加干凈。

2，與過去的事實相反：主句用would/could/should/might/+have+ done , 從句中過去完成時

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

如果當時我完成了我的做，我就能夠通過我的考試了。

3，與將來的事實相反：主句用：should/could/would/might/+動詞原形，從句用should do （可能性最大），過去式（可能性一般）were to do （可能性最?。?/p>

If it should snow tomorrow，I would make a snowman 如果明天下雪，明天我將對一個雪人

If it snowed tomorrow，I would make a snowman 如果明天下雪，明天我將堆一個雪人

If it were to snow tomorrow ，I would make a snowman 如果明天下雪，我將對一個雪人

虛擬語氣的倒裝形式

If I had worked hard ，I would have finished it 如果當時我努力工作，我就已經(jīng)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，我將會對雪人

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

虛擬語氣在各類從句中的用法

1，I lifted the chair so that I could be seen 我舉起椅子就是為了能被看見 （狀語從句）

狀語從句中常見連接詞：as if 好像，as though 好像，in order that 為了，for fear that 生怕，

In case 萬一 lest 以防萬一

2，主語從句：It is +形容詞 +that+ 主語+（should+動詞原形），should可以省略

It is very important that we （should ）study English every day 我們每天學習英語是很重要的。

4，賓語從句；I wish I would visit the moon我祝愿自己能有一天拜訪月球。

I would rather you had helped me out two days ago 我倒想你能在兩天前幫助我

賓語從句常見句型：主語+常見動詞+that+ 主語+ should+動詞原形

I suggest that you should do your homework 我建議你應(yīng)該做你的作業(yè)。

表語從句；He looked as if he had been here for many years 他看起來好像已經(jīng)很多年了。

同位語從句：

I make a proposal that we should hold a meeting next week 我提議下周召開一次會議

虛擬語氣常見詞匯：demand 要求，require 要求，proposal提議，advise 建議，order 命令，suggest建議

虛擬語氣的其他用法：

祝愿：Long live peace 和平萬歲

It is （high）time that+ 主語+ should/過去式

It's time that we had a break 我們早該休息了

It's （high）time that we should protect ourselves 我們是時候保護我們自己了。