Unit4 The 2nd period.doc

教研组签字 主备： 牛雪梅 主审 ： 杨宗峰 Revise Unit 4.What would you do?The 2nd period .Teaching Aims and Demands.1.Revise and consolidate important expressions 2.Revise important tests.(SectionA,3a ;SectionB,3a). Teaching Key points.1.Target laguages and stuctures. 2.The main examination point comments. .Teaching difficulties. v-ed其他，were+其他,1. The structures:If+sb.+ 主语+情态动词过去式+其他 从句 主句 （一般现在时态的虚拟语气结构）2. The difficult textReading :What would you do if?.Teaching procedures .Step1. Greetings and Check the homework.Step2.Grammar: Subjunctive Moodif引导的条件句中的虚拟语气虚拟语气表示一种不能实现的假设。该语法主要用于if条件状语从句。一、if引导的条件状语从句的分类及虚拟条件句的判断1、可以把条件句分为两类：1).真实条件句（Sentences of Real Condition）：凡是假设的情况发生性可能很大，就是真实条件句。例如：、If I have time , I will help you with this work.如果我有时间会帮助你做此工作的。(2)、If time permits, well go fishing together.(如果有时间的话，我们就一起去钓鱼。）2).虚拟条件句（Sentences of Unreal Condition）：当假设是不大可能实现时，就是虚拟条件句。例如：、If I were you , I would have attended the meeting. 如果我是你的话，就去参加会议了。、If he had come here yesterday, he would have seen his old friend.假如他昨天来这儿的话，就会看见他的老朋友。、If it had rained yesterday, we would have stayed at home.（如果昨天下雨的话，我们就会留在家里。）2、.if条件状语从句中虚拟语气的判断判断是真实条件句还是非真实条件句。只有在非真实条件句中才使用虚拟语气。通过句子意思，看假设的条件是否能够实现，能够实现是真实条件句，不能使用虚拟语气；假设的条件不能实现则是非真实条件句，要用虚拟语气。判断这个假设是与哪个事实相反。通常有三种情况：与过去事实相反。与现在事实相反。与将来事实可能相反。3、“后退一步法”后退一步法是指在准确地判断了该句与哪一事实相反后，按虚拟语气的后退一步法处理从句谓语动词的时态。即：在非真实条件状语从句中，谓语动词按正常情况“后退一步”。也就是：与过去事实相反，在从句中用过去完成时形式表示。与现在事实相反，在从句中用过去一般时形式表示。与将来事实可能相反，在从句中用过去将来时形式表示。主句中则用情态动词would, should, could 等加一个与从句一致的动词形式。例：、If I had come her yesterday, I would have seen him.、If I were a teacher, I would be strict with my students.、If it should snow tomorrow, they couldnt go out.4、注意事项if条件句中如有were, should, had，可以省去if，并使用倒装语序。在现代英语中if条件状与从句中的谓语动词如果是be其过去形式一般用were。二、虚拟语气在if 引导的条件句中的用法：（一）、表示与现在事实相反的情况。其句子结构为：从句：if + 主语+ 动词的过去式(be 用were) + 主句：主语+ would (should, could , might) + 动词原形+ 例：1.If I were you, I would go with him.2.If the weather were fine, I would go there.如果天气好，我去那儿。（事实天气不好）3.If I were you, I would read it again.如果我是你的话，我再读一遍。（事实上我不是你）4.If time permitted, I would write it again.如果时间允许的话，我再写一遍。（事实上时间不允许）5.If it werent snowing, we wouldnt stay in the house.要是现在不下雪的话，我们就不会待在屋里。（事实上现在下雪）6.What would I do if I were in your place?要是我处于你地位我会怎么办？（事实上我不在你的位置上）7.If he hurried, he could catch the first bus.他要是快点能够赶上头班公共汽车。（可是他不着急）8.If it werent for your help, we would get into trouble.如果没有你们的帮助，我们就会陷入困境。（而事实上得到了你们的帮助）9.If we had the manpower, we could open up even more land.如果有人力,我们还能开更多的荒地.10. If I were you, I would go with him.(从句If I were you, 主句I would go with him.)11. If I were you, I should buy it.(从句用过去式动词were，主句用动词原形buy)12. If I had time, I would study French.(如果有时间，我会学习法文。）（从句用过去式动词had，主句用动词原形study）13. If she knew English, she would not ask me for help.(如果她懂英文，她就不必要我帮了。)(从句用过去式动词knew, 主句用动词原形ask)注意：如果动作在进行中，主句要用：主语+ would be + 进行式动词+ 14. If they were here, he would be speaking to them now.(从句用过去式动词were, 主句用would be speaking)Step3.重难点解析（language points）P26.1.)give it to the charity 把它捐给慈善机构2.）buy snacks买零食3.）put the money in the bank把钱存进银行 P27.4.)be late for party/work/school/class 参加聚会迟到；上班迟到；上学迟到；上课迟到 5）He doesnt know what to wear. =He doesnt know what he should wear. 考点：简单句与复合句互相转化一用“及物动词+不定式”结构可以将含有that引导的某些宾语从句的复合句转换成简单句。例如：1. He decided that he would buy a digital camera online.He decided to buy a digital camera online.2. We hoped that we would come back soon.We hoped to come back soon.3. I expect that I shall finish my work by this Sunday.I expect to finish my work by this Sunday.二用“疑问词+不定式“结构可以将某些含有连接代词或连接副词引导的宾语从句转换简单句。例如：1. I dont know which one I can buy .I dont know which one to buy.2. We wonder where well go this Sunday.We wonder where to go this Sunday.3. Could you please teach me how I can search the Internet?Could you please teach me how to search the Internet?三用“tooto”结构可以将含有sothat引导的结果语从句(否定)的复合句转成简单句。如：1. The boy is so young that he cant look after himself.The boy is too young to look after himself.2. The question is so difficult that I cant answer it .The question is too difficult for me to answer.四用“enough +不定式”结构可以将含有so that 引导的结果状语从句（肯定）的复合句转变为简单句。例如：1. The girl is so tall that she can reach the apples on the tree.The girl is tall enough to reach the apples on the tree.2. This hall is so large that it can hold 2000 people.This hall is large enough to hold 2000 people.3. The table was so light that the little boy can carry it.The table was light enough for the little boy to carry.五用“happen + 不定式”或“seem +不定式”结构可以分别将“It happens that”和“It seems that ”等含有主语从句的复合句转换为简单句。例如：1. It happened that the teacher saw him playing in class.The teacher happened to see him playing in class.2. It seemed that sharks have been on the earth for thousands of years .Sharks seemed to have been on the earth for thousands of years.3. It seemed that this camera offered the most at the best price.This camera seemed to offer the most at the best price.六用“in order +不定式”或“so as +不定式”结构可以将含有so that 引导的目的状语从句的复合句转换为简单句。如：1. She decided to buy a camera online so that she could receive it soon.She decided to buy a camera online in order to receive it soon.She decided to buy a camera online so as to receive it soon.2. I went over my composition again and again so that I couldnt make any mistakes.I went over my composition again and again in order not to make any mistakes.I went over my composition again and again so as not to make any mistakes.3. Miyoko bought a camera so that she could take pictures in Beijing.Miyoko bought a camera in order to take pictures in Beijing.Miyoko bought a camera so as to take pictures in Beijing.七在某些作表语的形容词后面加不定式可以将某些含有状语从句的复合句转变成简单句。例如：1. I was glad when I heard the good news . I was glad to hear the good news.2. Toms parents were very surprised as they knew all about it. Toms parents were very surprised to know all about it. 6）He might not know anyone at the party.他可能在晚会上谁也不认识。might 的用法如下：（1）是情态动词may的过去式eg. He said that I might borrow his bike. 他说我可以借他的自行车。（2）是may的虚拟语气形式，不表示过去，而表示现在或将来“可以，可能”，但语气更委婉、客气，有时表示对可能性有所怀疑。eg. A) Might I borrow your bike ? 我可能借你的自行车吗？（语气比may更委婉） B) He might come today . 今天他可能会来。（对“他来”的可能性有所怀疑）P27.7). What if “如果怎么办”、“即使又有什么关系？” 这是一个固定搭配，引导带条件从句的疑问句。 eg. What if they dont come ?=What would you do if they dont come? 他们不来怎么办呢？ What if I dont know anyone ?=What should I do if I dont know anyone? 如果我一个人也不认识，怎么办呢?8.) I get nervous before big parties.在大的晚会之前，我会感到紧张。get nervous 变得紧张，get是系动词，nervous 是形容词做表语。又如：be nervous 或feel nervous 均可表达同样的含义P29.9.) in public 公共的、公开的eg. Lily is very shy , and she is afraid to speak in public. 莉莉很害羞，她害怕在公众场合讲话.10.) ask ones permission 征求某人的同意。 without permission 没有得到许可。11.) introduce vt. 介绍 introduce sb to sb. 把（某人）介绍给（某人）eg. Its my honor to introduce my teacher to everyone. 很荣幸，我把我的老师介绍给大家。 introduce oneself 自我介绍P30. 12.) Sometimes you might annoy people because youre so confident.有时候，你可能会激怒别人，因为你太自信了。13.) You woul