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1、湖大附中周建微课说明湖大附中周建微课说明授课内容：牛津英语模块六授课内容：牛津英语模块六 unit3 Grammar and Usage （非真实条件从句）（非真实条件从句）授课时长：授课时长：8 分钟分钟Teaching aims:1.to help students understand what unreal conditions are. 2.to help students understand and use if cause in unreal conditions.Teaching steps:Step 1: General introduction The grammar i
2、tems in this unit focus on unreal conditionals. Unreal conditionals are used to express a condition or situation that is not real or is imaginary. You should pay attention to the forms of the predicate verbs in different tenses when you use sentences in unreal conditionals. You are expected to use u
3、nreal conditionals and how to use unreal conditionals correctly. Step 2: Explanation 1. Read the following sentences.If my husband hadnt been caught in the rain, he would not have got a fever. Nothing would have happened to him if he had not visited his friend on Saturday If I were you, I would not
4、have visited the friend on Saturday. In the above sentences, what has been said is unreal. The verb forms like these can also be called the subjunctive. Can you find out in what cases the unreal conditionals are used? And can you say the sentences in another way, not using the unreal conditionals?Sa
5、mple answers (1) My husband was caught in the rain, so he got a fever. (2) He visited his friend on Saturday, so something happened to him. (3) I am not you, so I visited the friend on Saturday.2. Read Point 4 to see how to form unreal conditionals of the present, past of future time. Use the three
6、structures to translate some sentences. (1) 如果我是一个学生，我将更加努力地学习。 (2) 如果你昨天去听音乐会的话， 你将会遇到她了。 (3) 如果明天下雨的话，会议将会推迟。Sample answers (1) If I were a doctor, I would save her life without hesitation. (2) If you had gone to the concert yesterday, you would have met her. (3) If it rained tomorrow, the meeting
7、 would be put off. 3. Please read Point 3 and you will find out only should, were or had can be used in the inversion. Change the following sentences into their normal order and compare the differences between the two types of sentences.(1) Should it rain tomorrow, we would not go outing. (2) Had yo
8、u come earlier, you would have met my sister. (3) Were you to take the train, you would be there much sooner.Answers (1) If it should rain tomorrow, we would not go outing. (2) If you had come earlier, you would have met my sister. (3) If you were to take the train, you would be there much sooner.Fo
9、r reference动词动词的语语气气虚虚拟语拟语气气一、语气的定义和种类一、语气的定义和种类l、语气：语气是动词的一种形式，它表示说话人对某一行为或事情的看法和态度。2、语气的种类：(1)陈述语气: 表示动作或状态是现实的、确定的或符合事实的，用于陈述句、疑问句和某些感叹句。如：We are not ready. 我们没准备好。What a fine day it is! 多好的天气啊!(2)祈使语气: 表示说话人的建议、请求、邀请、命令等。如: Open the door, please。请打开门。(3)虚拟语气: 表示动作或状态不是客观存在的事实，而是说话人的主观愿望、假设或推测等。如
10、: If I were you, I should study English. 如果我是你，我就学英语了。May you succeed! 祝您成功！二、虚拟语气在条件从句中的用法二、虚拟语气在条件从句中的用法条件句有两类，一类是真实条件句，一类是虚拟条件句。如果假设的情况是有可能发生的，就是真实条件何。在这种真实条件句中的谓语用陈述语气。如: If it doesnt rain tomorrow, we will go to the park. 如果明天不下雨，我们就去公园。如果假设的情况是过去或现在都不存在的，或将来不大可能发生的，则是虚拟条件句。如: If he had seen yo
11、u yesterday, he would have asked you about it. 如果他昨天见到你，他会问你这件事的。(事实上他昨天没见到你，因此也未能问你这件事。)在含有虚拟条件句的复合句中，主句和从句的谓语都要用虚拟语气。现将虚拟条件从句和主句的动词形式列表如下:从 句主 句与现在事实相反动词的过去式（be的过去式一般用were）would/ should/ could/ might + 动词原形与过去事实相反had + 过去分词would/ should/ could/ might + have + 过去分词与将来事实相反动词过去式，should + 动词原形，were to
12、 + 动词原形would/ should/ could/ might + 动词原形注: 主句中的should只用于I、we，但在美国英语中，should常被would代替；从句中的should 可用于各种人称。l. 表示与现在事实相反的假设和结果。如: If my brother were here, everything would be all right. 要是我哥哥在这儿, 一切都没问题了。2. 表示与过去事实相反的假设和结果。如: If you had taken my advice，you wouldnt (couldnt) have failed in the exam. 如果你
13、按照我的建议去做，你一定不会(不可能)考试不及格。3. 表示与将来事实可能相反的假设和结果。如: If it were Sunday tomorrow, I should (would，could，might) go to see my grandmother. 如果明天是星期天，我就 (可能)去看望我奶奶。If it were to snow this evening, they would not go out. 如果今晚下雪，他们将不出去了。4. 在条件句中如果出现 were, had, should 可省去 if，将主语与这些词倒装，例如：Had the doctor come las
14、t night, the boy would have saved.Were I to go to the moon one day, I would see it with my own eyes.Should it rain tomorrow, we would stay at home.For reference Relative items in recent years college entrance examination: 1 I was really anxious about you. You _ home without a word. (2001 全国)A. mustn
15、t leaveB. shouldnt have left C. couldnt have left D. neednt leave 2How do you_ we go to Beijing for our holidays? (2004 福建)I think wed better fly there. Its much more comfortable.A. insist B. want C. suppose D. suggest 3. I have lost one of my gloves. I it somewhere. A. must drop B. must have droppe
16、d C. must be dropping D. must have been dropped 4. Eliza remembers everything exactly as if it _ yesterday. (2006 全国 I)A. was happening B. happens C. has happened D. happened 5. _ fired, your health care and other benefits will not be immediately cut off.A. Would you be B. Should you be C. Could you be D. Might you be Keys: 1-5 BDBDBStep 3: practice 1. Read the dialogue betw
