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译林2003课标版《Grammar and usage(1)： Unreal conditions》精品PPT课件优质课下载
Step1: Leading-in(导入)
Step2: Presentation（知识讲解）
Unreal conditionals are used to express a condition or situation that is unreal or imaginary. (虚拟语气是说话人表达的一种假设, 或一种主观愿望, 即动词所表示的动作或状态并非真实或仅是主观设想时所用的动词形式)
We should pay attention to the forms of the verbs and different tenses when we use sentences with unreal conditionals.
E.g.
If I were you, I would take them away.
1.一般条件句中与现在的事实相反
If he came here, he would help you.
We use unreal conditionals to state a present condition or situation that is not real or imaginary.
We form unreal present conditionals like this:
1. 假如我有更多的时间，我就会学习德语。
If I had more time，I would study German.
2.如果我年轻的话，我就会参军。
If I were young, I would join the army.
Practice:
If… were/did … ,
…would/could/might / should do …
1.一般条件句中与现在的事实相反
We also use unreal conditionals to refer to an imaginary past action.
E.g.
If you had joined the chat room ten minutes ago, you would have known what we were talking about.
2.一般条件句中与过去的事实相反
We form unreal past conditionals like this:
1) 如果他抓紧时间，他本来能赶上那趟火车。
If he had hurried, he could have caught the train.