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新人教版高中英语必修3Unit 5 the value of money-Reading For Writing教学设计一
【参考范文】Narrator：(Henry is smiling as he leaves the restaurant. As he is walking down the street, he sees a sign for a place that cuts hair. He decides to get it cut. )H＝Henry；B＝Barber；R＝rude manH：Good afternoon, I'd like to get a cut, if I may. (The barber looks at Henry's hair and continues cutting another man's hair. )Er, I'd really like a haircut. As you can see it's much too long. B：(in a rude manner) Yes, I can see that. Indeed, I can. H：Fine, well I'll have a seat then. (He sits in one of the barber's chairs. The barber turns to look at Henry. )B：It's quite expensive here, you know！Are you sure you can afford it?H：Yes. I think so. (In comes the rude man. )R：Hey you there. I need a haircut quickly. Can you do me straightaway?B：All right, then, get in the chair and I'll see what I can do. R：Thank you. (sits down in one of the barber's chairs)H：Excuse me, but I was here first. Aren't you going to do my hair first?B：This man's in a hurry. H：Well so am I！I insist that you cut my hair first. B：OK, but I'll have to be quick. This gentleman is waiting. H：Thank you. (They both become quiet. After his hair is cut, the barber tells Henry how much he must pay. Henry shows the barber the bank note. )B：Why, Mr . . . (looks shocked)H：Adams. Henry Adams. I'm sorry, I don't have any change. R：You're that Mr Adams! Well，I'm glad I waited or I might never have known it was you. B：Why, Mr Adams, please don't worry！(wearing a big smile) Nothing to worry about！Nothing at all!Please come back any time, even if you only need too little hairs cut！It will be my honour to serve you!
新人教版高中英语选修2Unit 1 Science and Scientists-Discovering useful structures教学设计
The grammatical structure of this unit is predicative clause. Like object clause and subject clause, predicative clause is one of Nominal Clauses. The leading words of predicative clauses are that, what, how, what, where, as if, because, etc.The design of teaching activities aims to guide students to perceive the structural features of predicative clauses and think about their ideographic functions. Beyond that, students should be guided to use this grammar in the context apporpriately and flexibly.1. Enable the Ss to master the usage of the predicative clauses in this unit.2. Enable the Ss to use the predicative patterns flexibly.3. Train the Ss to apply some skills by doing the relevant exercises.1.Guide students to perceive the structural features of predicative clauses and think about their ideographic functions.2.Strengthen students' ability of using predicative clauses in context, but also cultivate their ability of text analysis and logical reasoning competence.Step1: Underline all the examples in the reading passage, where noun clauses are used as the predicative. Then state their meaning and functions.1) One theory was that bad air caused the disease.2) Another theory was that cholera was caused by an infection from germs in food or water.3) The truth was that the water from the Broad Street had been infected by waste.Sum up the rules of grammar:1. 以上黑体部分在句中作表语。2. 句1、2、3中的that在从句中不作成分，只起连接作用。 Step2: Review the basic components of predicative clauses1.Definition
新人教版高中英语选修2Unit 4 Journey Across a Vast Land教学设计
当孩子们由父母陪同时，他们才被允许进入这个运动场。3．过去分词(短语)作状语时的几种特殊情况(1)过去分词(短语)在句中作时间、条件、原因、让步状语时，相当于对应的时间、条件、原因及让步状语从句。Seen from the top of the mountain (＝When it is seen from the top of the mountain), the whole town looks more beautiful.从山顶上看，整个城市看起来更美了。Given ten more minutes (＝If we are given ten more minutes), we will finish the work perfectly.如果多给十分钟，我们会完美地完成这项工作。Greatly touched by his words (＝Because she was greatly touched by his words), she was full of tears.由于被他的话深深地感动，她满眼泪花。Warned of the storm (＝Though they were warned of the storm), the farmers were still working on the farm.尽管被警告了风暴的到来，但农民们仍在农场干活。(2)过去分词(短语)在句中作伴随、方式等状语时，可改为句子的并列谓语或改为并列分句。The teacher came into the room, followed by two students (＝and was followed by two students)．后面跟着两个学生，老师走进了房间。He spent the whole afternoon, accompanied by his mom(＝and was accompanied by his mom)．他由母亲陪着度过了一整个下午。
新人教版高中英语选修2Unit 1 Science and Scientists-Reading and thinking教学设计
Step 5： After learning the text, discuss with your peers about the following questions:1.John Snow believed Idea 2 was right. How did he finally prove it?2. Do you think John Snow would have solved this problem without the map?3. Cholera is a 19th century disease. What disease do you think is similar to cholera today?SARS and Covid-19 because they are both deadly and fatally infectious, have an unknown cause and need serious public health care to solve them urgently.keys:1. John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.2. No. The map helped John Snow organize his ideas. He was able to identify those households that had had many deaths and check their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.3. SARS and Covid-19 because they are both deadly and fatally infectious, have an unknown cause and need serious public health care to solve them urgently.Step 6: Consolidate what you have learned by filling in the blanks:John Snow was a well-known _1___ in London in the _2__ century. He wanted to find the _3_____ of cholera in order to help people ___4_____ it. In 1854 when a cholera __5__ London, he began to gather information. He ___6__ on a map ___7___ all the dead people had lived and he found that many people who had ___8____ (drink) the dirty water from the __9____ died. So he decided that the polluted water ___10____ cholera. He suggested that the ___11__ of all water supplies should be _12______ and new methods of dealing with ____13___ water be found. Finally, “King Cholera” was __14_____.Keys: 1. doctor 2. 19th 3.cause 4.infected with 5.hit 6.marked 7.where 8.drunk 9.pump 10.carried 11.source 12.examined 13.polluted 14.defeatedHomework: Retell the text after class and preview its language points
新人教版高中英语选修2Unit 2 Bridging Cultures-Discovering useful structures教学设计
The grammar of this unit is designed to review noun clauses. Sentences that use nouns in a sentence are called noun clauses. Nominal clauses can act as subject, object, predicate, appositive and other components in compound sentences. According to the above-mentioned different grammatical functions, nominal clauses are divided into subject clause, object clause, predicate clause and appositive clause. In this unit, we will review the three kinds of nominal clauses. Appositive clauses are not required to be mastered in the optional compulsory stage, so they are not involved.1. Guide the students to judge the compound sentences and determine the composition of the clauses in the sentence.2. Instruct students to try to learn grammar by generalizing grammar rules, controlling written practice, and semi-open oral output.3. Inspire the students to systematize the function and usage of noun clause1.Instruct students to try to learn grammar by generalizing grammar rules, controlling written practice, and semi-open oral output.2.Inspire the students to systematize the function and usage of noun clauseStep1: The teacher ask studetns to find out more nominal clauses from the reading passage and udnerline the nominal clauses.
新人教版高中英语选修2Unit 3 Food and Culture-Discovering useful structures教学设计
The newspaper reported more than 100 people had been killed in the thunderstorm.报纸报道说有一百多人在暴风雨中丧生。(2)before、when、by the time、until、after、once等引导的时间状语从句的谓语是一般过去时，以及by、before后面接过去的时间时，主句动作发生在从句的动作或过去的时间之前且表示被动时，要用过去完成时的被动语态。By the time my brother was 10, he had been sent to Italy.我弟弟10岁前就已经被送到意大利了。Tons of rice had been produced by the end of last month. 到上月底已生产了好几吨大米。(3) It was the first/second/last ... time that ...句中that引导的定语从句中，主语与谓语构成被动关系时，要用过去完成时的被动语态。It was the first time that I had seen the night fact to face in one and a half years. 这是我一年半以来第一次亲眼目睹夜晚的景色。(4)在虚拟语气中，条件句表示与过去事实相反，且主语与谓语构成被动关系时，要用过去完成时的被动语态。If I had been instructed by him earlier, I would have finished the task.如果我早一点得到他的指示，我早就完成这项任务了。If I had hurried, I wouldn't have missed the train.如果我快点的话，我就不会误了火车。If you had been at the party, you would have met him. 如果你去了晚会，你就会见到他的。
新人教版高中英语选修2Unit 5 First Aid-Discovering useful structures教学设计
You have no excuse for not going.你没有理由不去。He was punished for not having finished his homework.他因未完成作业而受到惩罚。2．动词ing形式复合结构由物主代词或人称代词宾格、名词所有格或普通格加动词ing，即“sb./sb.'s＋doing”构成。动词ing形式的复合结构实际上是给动词ing形式加了一个逻辑主语。动词ing形式的复合结构有四种形式：①形容词性物主代词＋动词ing②名词所有格＋动词ing③代词宾格＋动词ing④名词＋动词ingHer coming to help encouraged all of us.她来帮忙鼓舞了我们所有人。The baby was made awake by the door suddenly shutting.这个婴儿被突然的关门声吵醒了。Can you imagine him/Jack cooking at home?你能想象他/杰克在家做饭的样子吗？无生命名词无论是作主语还是作宾语都不能用第②种形式。Tom's winning first prize last year impressed me a lot.汤姆去年得了一等奖使我印象深刻。Do you mind my/me/Jack's/Jack leaving now?你介意我/杰克现在离开吗？Excuse me for my not coming on time．很抱歉我没能按时来。His father's being ill made him worried.他父亲病了，他很担心。We are looking forward to the singer's/the singer to give us a concert.我们盼望着这位歌手来给我们举办一场演唱会。
人教A版高中数学必修二平面与平面垂直教学设计
6. 例二：如图，AB是⊙O的直径，PA垂直于⊙O所在的平面，C是圆周上的一点，且PA＝AC，求二面角P－BC－A的大小． 解：由已知PA⊥平面ABC，BC在平面ABC内∴PA⊥BC∵AB是⊙O的直径，且点C在圆周上，∴AC⊥BC又∵PA∩AC=A,PA,AC在平面PAC内，∴BC⊥平面PAC又PC在平面PAC内，∴PC⊥BC又∵BC是二面角P-BC-A的棱，∴∠PCA是二面角P-BC-A的平面角由PA=AC知△PAC是等腰直角三角形∴∠PCA=45°，即二面角P-BC-A的大小是45°7.面面垂直定义一般地，两个平面相交，如果它们所成的二面角是直二面角，就说这两个平面互相垂直，平面α与β垂直，记作α⊥β8. 探究：建筑工人在砌墙时，常用铅锤来检测所砌的墙面与地面是否垂直，如果系有铅锤的细绳紧贴墙面，工人师傅被认为墙面垂直于地面，否则他就认为墙面不垂直于地面，这种方法说明了什么道理？
人教A版高中数学必修一单调性与最大（小）值教学设计（1）
《函数的单调性与最大（小）值}》系人教A版高中数学必修第一册第三章第二节的内容,本节包括函数的单调性的定义与判断及其证明、函数最大（小）值的求法。在初中学习函数时,借助图像的直观性研究了一些函数的增减性,这节内容是初中有关内容的深化、延伸和提高函数的单调性是函数众多性质中的重要性质之一,函数的单调性一节中的知识是前一节内容函数的概念和图像知识的延续,它和后面的函数奇偶性,合称为函数的简单性质,是今后研究指数函数、对数函数、幂函数及其他函数单调性的理论基础;在解决函数值域、定义域、不等式、比较两数大小等具体问需用到函数的单调性;同时在这一节中利用函数图象来研究函数性质的救开结合思想将贯穿于我们整个高中数学教学。
人教A版高中数学必修一充分条件与必要条件教学设计（2）
【例3】本例中“p是q的充分不必要条件”改为“p是q的必要不充分条件”，其他条件不变，试求m的取值范围．【答案】见解析【解析】由x2－8x－20≤0得－2≤x≤10，由x2－2x＋1－m2≤0(m>0)得1－m≤x≤1＋m(m>0)因为p是q的必要不充分条件，所以q?p，且p?/q.则{x|1－m≤x≤1＋m，m>0}?{x|－2≤x≤10}所以m>01－m≥－21＋m≤10，解得0<m≤3.即m的取值范围是(0,3]．解题技巧：（利用充分、必要、充分必要条件的关系求参数范围）(1)化简p、q两命题，(2)根据p与q的关系(充分、必要、充要条件)转化为集合间的关系，(3)利用集合间的关系建立不等关系，(4)求解参数范围．跟踪训练三3．已知P＝{x|a－4<x<a＋4}，Q＝{x|1<x<3}，“x∈P”是“x∈Q”的必要条件，求实数a的取值范围．【答案】见解析【解析】因为“x∈P”是x∈Q的必要条件，所以Q?P.所以a－4≤1a＋4≥3解得－1≤a≤5即a的取值范围是[－1,5]．五、课堂小结让学生总结本节课所学主要知识及解题技巧
人教A版高中数学必修一充分条件与必要条件教学设计（1）
本课是高中数学第一章第4节，充要条件是中学数学中最重要的数学概念之一， 它主要讨论了命题的条件与结论之间的逻辑关系,目的是为今后的数学学习特别是数学推理的学习打下基础。从学生学习的角度看，与旧教材相比，教学时间的前置，造成学生在学习充要条件这一概念时的知识储备不够丰富，逻辑思维能力的训练不够充分，这也为教师的教学带来一定的困难．“充要条件”这一节介绍了充分条件,必要条件和充要条件三个概念,由于这些概念比较抽象,中学生不易理解,用它们去解决具体问题则更为困难,因此”充要条件”的教学成为中学数学的难点之一,而必要条件的定义又是本节内容的难点.A.正确理解充分不必要条件、必要不充分条件、充要条件的概念；B.会判断命题的充分条件、必要条件、充要条件．C.通过学习，使学生明白对条件的判定应该归结为判断命题的真假.D.在观察和思考中，在解题和证明题中，培养学生思维能力的严密性品质．
人教A版高中数学必修一单调性与最大（小）值教学设计（2）
《函数的单调性与最大（小）值》是高中数学新教材第一册第三章第2节的内容。在此之前，学生已学习了函数的概念、定义域、值域及表示法，这为过渡到本节的学习起着铺垫作用。学生在初中已经学习了一次函数、二次函数、反比例函数的图象，在此基础上学生对增减性有一个初步的感性认识，所以本节课是学生数学思想的一次重要提高。函数单调性是函数概念的延续和拓展，又是后续研究指数函数、对数函数等内容的基础，对进一步研究闭区间上的连续函数最大值和最小值的求法和实际应用，对解决各种数学问题有着广泛作用。课程目标1、理解增函数、减函数 的概念及函数单调性的定义；2、会根据单调定义证明函数单调性；3、理解函数的最大（小）值及其几何意义；4、学会运用函数图象理解和研究函数的性质.数学学科素养
人教A版高中数学必修一等式性质与不等式性质教学设计（2）
等式性质与不等式性质是高中数学的主要内容之一，在高中数学中占有重要地位，它是刻画现实世界中量与量之间关系的有效数学模型，在现实生活中有着广泛的应，有着重要的实际意义.同时等式性质与不等式性质也为学生以后顺利学习基本不等式起到重要的铺垫.课程目标1. 掌握等式性质与不等式性质以及推论，能够运用其解决简单的问题．2. 进一步掌握作差、作商、综合法等比较法比较实数的大小． 3. 通过教学培养学生合作交流的意识和大胆猜测、乐于探究的良好思维品质。数学学科素养1.数学抽象：不等式的基本性质；2.逻辑推理：不等式的证明；3.数学运算：比较多项式的大小及重要不等式的应用；4.数据分析：多项式的取值范围，许将单项式的范围之一求出，然后相加或相乘.（将减法转化为加法，将除法转化为乘法）；5.数学建模：运用类比的思想有等式的基本性质猜测不等式的基本性质。
人教A版高中数学必修一函数y=Asin(ωχ+φ)教学设计（1）
本节课选自《普通高中课程标准实验教科书数学必修1》5.6.2节 函数y=Asin(ωx+φ)的图象通过图象变换,揭示参数φ、ω、A变化时对函数图象的形状和位置的影响。通过引导学生对函数y＝sinx到y＝Asin(ωx+φ)的图象变换规律的探索,让学生体会到由简单到复杂、由特殊到一般的化归思想；并通过对周期变换、相位变换先后顺序调整后,将影响图象变换这一难点的突破,让学生学会抓住问题的主要矛盾来解决问题的基本思想方法;通过对参数φ、ω、A的分类讨论,让学生深刻认识图象变换与函数解析式变换的内在联系。通过图象变换和“五点”作图法,正确找出函数y＝sinx到y＝Asin(ωx+φ)的图象变换规律,这也是本节课的重点所在。提高学生的推理能力。让学生感受数形结合及转化的思想方法。发展学生数学直观、数学抽象、逻辑推理、数学建模的核心素养。
人教A版高中数学必修二立体图形直观图教学设计
1.直观图：表示空间几何图形的平面图形，叫做空间图形的直观图直观图往往与立体图形的真实形状不完全相同，直观图通常是在平行投影下得到的平面图形2.给出直观图的画法斜二侧画法观察：矩形窗户在阳光照射下留在地面上的影子是什么形状？眺望远处成块的农田，矩形的农田在我们眼里又是什么形状呢？3. 给出斜二测具体步骤（1）在已知图形中取互相垂直的X轴Y轴，两轴相交于O，画直观图时，把他们画成对应的X'轴与Y'轴，两轴交于O'。且使∠X'O'Y'=45°（或135°）。他们确定的平面表示水平面。（2）已知图形中平行于X轴或y轴的线段，在直观图中分别画成平行于X'轴或y'轴的线段。（3）已知图形中平行于X轴的线段，在直观图中保持原长度不变，平行于Y轴的线段，在直观图中长度为原来一半。4.对斜二测方法进行举例：对于平面多边形，我们常用斜二测画法画出他们的直观图。如图 A'B'C'D'就是利用斜二测画出的水平放置的正方形ABCD的直观图。其中横向线段A'B'=AB，C'D'=CD；纵向线段A'D'=1/2AD，B'C'=1/2BC；∠D'A'B'=45°，这与我们的直观观察是一致的。5.例一：用斜二测画法画水平放置的六边形的直观图(1)在六边形ABCDEF中，取AD所在直线为X轴，对称轴MN所在直线为Y轴，两轴交于O'，使∠X'oy'=45°（2）以o'为中心，在X'上取A'D'=AD，在y'轴上取M'N'=½MN。以点N为中心，画B'C'平行于X'轴，并且等于BC；再以M'为中心，画E'F'平行于X‘轴并且等于EF。 （3）连接A'B',C'D',E'F',F'A',并擦去辅助线x轴y轴，便获得正六边形ABCDEF水平放置的直观图A'B'C'D'E'F' 6. 平面图形的斜二测画法（1）建两个坐标系，注意斜坐标系夹角为45°或135°；（2）与坐标轴平行或重合的线段保持平行或重合；（3）水平线段等长，竖直线段减半；（4）整理.简言之：“横不变，竖减半，平行、重合不改变。”
人教A版高中数学必修二平面与平面平行教学设计
1.探究：根据基本事实的推论2,3，过两条平行直线或两条相交直线，有且只有一个平面，由此可以想到，如果一个平面内有两条相交或平行直线都与另一个平面平行，是否就能使这两个平面平行？如图（1），a和b分别是矩形硬纸板的两条对边所在直线，它们都和桌面平行，那么硬纸板和桌面平行吗？如图（2），c和d分别是三角尺相邻两边所在直线，它们都和桌面平行，那么三角尺与桌面平行吗？2.如果一个平面内有两条平行直线与另一个平面平行，这两个平面不一定平行。我们借助长方体模型来说明。如图，在平面A’ADD’内画一条与AA’平行的直线EF,显然AA’与EF都平行于平面DD’CC’,但这两条平行直线所在平面AA’DD’与平面DD’CC’相交。3.如果一个平面内有两条相交直线与另一个平面平行，这两个平面是平行的，如图，平面ABCD内两条相交直线A’C’,B’D’平行。
人教A版高中数学必修二直线与平面垂直教学设计
1.观察（1）如图，在阳光下观察直立于地面的旗杆AB及它在地面影子BC,旗杆所在直线与影子所在直线的位置关系是什么？（2）随着时间的变化，影子BC的位置在不断的变化，旗杆所在直线AB与其影子B’C’所在直线是否保持垂直？经观察我们知道AB与BC永远垂直，也就是AB垂直于地面上所有过点B的直线。而不过点B的直线在地面内总是能找到过点B的直线与之平行。因此AB与地面上所有直线均垂直。一般地，如果一条直线与一个平面α内所有直线均垂直，我们就说l垂直α，记作l⊥α。2.定义：①文字叙述：如果直线l与平面α内的所有 直线都垂直，就说直线l与平面α互相垂直，记作l⊥α.直线l叫做平面α的垂线，平面α叫做直线l的垂面．直线与平面垂直时，它们唯一的公共点P叫做交点．②图形语言：如图．画直线l与平面α垂直时，通常把直线画成与表示平面的平行四边形的一边垂直．③符号语言：任意a?α，都有l⊥a?l⊥α.
人教A版高中数学必修二直线与平面垂直教学设计
1.观察（1）如图，在阳光下观察直立于地面的旗杆AB及它在地面影子BC,旗杆所在直线与影子所在直线的位置关系是什么？（2）随着时间的变化，影子BC的位置在不断的变化，旗杆所在直线AB与其影子B’C’所在直线是否保持垂直？经观察我们知道AB与BC永远垂直，也就是AB垂直于地面上所有过点B的直线。而不过点B的直线在地面内总是能找到过点B的直线与之平行。因此AB与地面上所有直线均垂直。一般地，如果一条直线与一个平面α内所有直线均垂直，我们就说l垂直α，记作l⊥α。2.定义：①文字叙述：如果直线l与平面α内的所有 直线都垂直，就说直线l与平面α互相垂直，记作l⊥α.直线l叫做平面α的垂线，平面α叫做直线l的垂面．直线与平面垂直时，它们唯一的公共点P叫做交点．②图形语言：如图．画直线l与平面α垂直时，通常把直线画成与表示平面的平行四边形的一边垂直．
人教A版高中数学必修二直线与直线垂直教学设计
6.例二：如图在正方体ABCD-A’B’C’D’中，O’为底面A’B’C’D’的中心，求证：AO’⊥BD 证明：如图，连接B’D’,∵ABCD-A’B’C’D’是正方体∴BB’//DD’,BB’=DD’∴四边形BB’DD’是平行四边形∴B’D’//BD∴直线AO’与B’D’所成角即为直线AO’与BD所成角连接AB’,AD’易证AB’=AD’又O’为底面A’B’C’D’的中心∴O’为B’D’的中点∴AO’⊥B’D’,AO’⊥BD7.例三如图所示，四面体A－BCD中，E，F分别是AB，CD的中点.若BD，AC所成的角为60°，且BD＝AC＝2.求EF的长度.解：取BC中点O,连接OE,OF，如图。∵E,F分别是AB,CD的中点，∴OE//AC且OE=1/2AC,OF//AC且OF=1/2BD,∴OE与OF所成的锐角就是AC与BD所成的角∵BD,AC所成角为60°，∴∠EOF=60°或120°∵BD=AC=2,∴OE=OF=1当∠EOF=60°时，EF=OE=OF=1,当∠EOF=120°时，取EF的中点M,连接OM,则OM⊥EF,且∠EOM=60°∴EM= ,∴EF=2EM=
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