Grammar and usage(1): Unreal conditions教学设计(第二课时)

M6 U3

Grammar Unreal conditionals 虚拟语气

【

学习目标】Students are expected to learn when to use Unreal conditionals and how to use Unreal conditionals.

【知识准备】英语中的语气分为陈述语气、祈使语气、虚拟语气三类。虚拟语气用来表示说话人的主观愿望或假想，而不表示客观存在的事实，所说的是一个条件，不一定是事实，或与事实相反。虚拟语气通过谓语动词的特殊形式来表示。

条件状语从句分类

条件句可分为两类，一类为真实条件句，一类为非真实条件句。非真实条件句表示的是假设或实际可能性不大的情况，故采用虚拟语气。

eg：

1. If he doesn't hurry up,he will miss the bus. 2.If he is free,he will ask me to tell stories.

3.If I were you,I would go at once.

4.If there were no air,people would die. 以上四句中

和

是真实语气

；

和

是虚拟语气

【自主探究】一、状语从句中的虚拟语气

(一) if 引导的条件状语从句

1 If I had time, I would attend the meeting. 2. If I were you, I should seize the opportunity to go abroad. 3. If you had taken my advice, you would not have failed in the exams. 4. If he had come earlier, he wouldn’t have missed the first bus.

5 If the headmaster came tomorrow, we would have the meeting. 6 If it were to rain tomorrow, the sports meeting would be put off. 7 If he should make a mistake, you should not blame him. 与现在事实相反

与过去事实相反

与将来事实相反

感悟：与现在事实相反

1. If I were a doctor, I might save her life without hesitation. 2. If I stayed at home now, I could play computer games.

总结形式：

时态

与现在事实相反

if条件从句

主

句

译一译: 1.如果我有时间，我就会和你去看电影。

2.如果我是你，我就会努力学习。

感悟：与过去事实相反

1. If I had earned a lot of money last year, I would have bought a car. 2. If the earthquake hadn’t happened in Wen chuan in 2008, many people wouldn’t have lost

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families.

总结形式：

时态

与过去事实相反

if 条件从

句

主句

练一练：1. If the farmer hadn’t seen the snake, he _______________ (not put) it in the arms.

2. If he ______________ (not put) it in the arms, the snake wouldn’t have bitten him.

3. If the snake _______________ (not bite) him, he________________ (not die). 感悟：与将来事实相反

1. In the future, if I had 10,000,000 yuan, I would buy a house.

2. If the water in the Pacific Ocean were to be poured out, it wouldn’t stop my love.

3. If he should come tomorrow, I would talk to him about it. 总结形式:

时态

if 条件从句

主句

与将来事实相反

练一练：

1. If everyone _____________ (help) those in need in future, the world would be a much better place. 2. If I were to be admitted to a famous university in two years, I

(treat) you to a big meal. 3. 如果明天天晴，我们就去野餐。

（二）：条件状语的倒装：

如果条件状语中有were, had, should时, 可以倒装成：Were / Should / Had +主+其他

1.

If I were you, I would try it again.

___________________, I would try it again.

2. If he had been there yesterday, he would have seen the film.

_______________ there yesterday, he would have seen the film. 3.

If it should snow tomorrow, we wouldn’t go out.

_____________ tomorrow, we wouldn’t go out.

Practice 1. If it

(be) not for their help, we should be in a very difficult position. 2. If you took my advice, you would not have failed in the exams.

3.

If you asked me yesterday, I could have told you.

4. If it should be fine tomorrow, we will continue our sports meeting.

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