文档介绍：If I were a boy
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If I were a boy
I think I could understand
How it feels to love a girl
I swear I'd be a better man
I'd listen to her
What is subjunctive mood？
Subjunctive mood is a special form of verbs.(动词变态)
They refer to a wish that can't be true.
(所说的话不是事实，而是假设、愿望等。)
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Contrary to the present
01
Contrary to the past
02
Contrary to the future
03
The Subjunctive Mood In If--clauses
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Contrary to the present（与现在事实相反）
If 从句的谓语形式
主句的谓语形式
动词过去式
would/could/should/might
（not）+ 动词原形
如果我是一只鸟
If I were a bird, I would have two wings;
If I had two wings, I would fly high in the sky;
（be 一律用were）
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1、---Mom, if I (be) you, I (not ask) my son to study at weekends.
---Unfortunately, you are not.
2、If he (win) the lottery(彩票),
he (travel) around the world.
Practice1
were
wouldn't ask
won
would travel
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Contrary to the past（与过去事实相反）
If Jack hadn't been on the Titanic,
he wouldn't have met Rose.
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Contrary to the past（与过去事实相反）
If Jack hadn't been on the Titanic,
he wouldn't have met Rose.
If 从句的谓语形式
主句的谓语形式
had (not)+ done
would/could/should/might
(not) + have done
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Contrary to the past
If Jack ( not meet) Rose,
they ( not fall) in love with each other.
hadn't met
wouldn't have fallen
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If Titanic (not sink) then, Jacke and Rose (marry).
hadn't sunk
would have married
Tips：
If sb had (not) done , sb would/should/could/might + have done .
practice
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The Subjunctive Mood In If--clause
口诀：（动词时态）
1、从句往前推
2、主句4+1
If 从句的谓语形式
主句的谓语形式
与现在
事实相反
与过去
事实相反
动词过去式
（be → were）
had done
would/
could/
should/
might
动词原形
have done
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