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新人教版高中英语必修2Unit 1 Cultural HeritageReading and Thinking教案一

  • 人教版高中语文必修5《宇宙的未来》教案

    人教版高中语文必修5《宇宙的未来》教案

    (2)怎样理解本文的一些相关论述?【明确】这是一篇科学讲演,涉及较为复杂的背景知识。这些知识和讲演的主题是密切相关的,如果不作必要的交待,讲演的内容就会显得抽象和单薄。如,谈到天气预报、大脑工作原理都具有混沌性质,来反衬宇宙在大尺度上是"平滑而非混沌"的;如,谈到恒星的死亡(归宿)引出黑洞,为宇宙中暗物质的存在寻找理论支持;如,谈到现存宇宙对初始密度的极度敏感,引出了"人择原理"等等。这些相关的论述,或从对立面凸显观点,或从纵深面强化观点,使论证丰富多彩。(3)这篇讲演在语言上具有怎样的特点?【明确】讲演是面对面的交流,这种交流又是单向度的,如果不注意讲演的语言艺术,就达不到最佳的表达效果。这篇讲演,除了推理严谨外,语言幽默也是其突出的特点。幽默的语言创造出一种轻松愉快的气氛,更具有亲和力,使所阐发的事理更容易为听众接受。

  • 人教版高中语文必修5《逍遥游》教案

    人教版高中语文必修5《逍遥游》教案

    六、到此为止,我们了解到,作者对“笑”鲲鹏和别人的蜩与学鸠、斥鴳、宋荣子都一一作了否定。那么请大家讨论一下,1、作者对鲲鹏和“知效一官,行比一乡,德合一君,而征一国者”是不是肯定呢?明确:也都作了否定。否定后者好理解,关键是否定前者不好理解,因为“鲲鹏展翅”早已作为积极的意象被人们广泛引用。但在本文中,作者在讲述这一寓言故事时,突出的不是鲲鹏本身,而是风力,“故九万里,风斯在下矣,而后乃今培风;背负青天,而莫之夭阏者,而后乃今将图南”。对风力作用的突出,实际上就是对鲲鹏的否定。作者写了“笑”的双方,对“笑”的一方蜩与学鸠、斥鴳、宋荣子都作了否定,对被“笑”的一方鲲鹏和“知效一官,行比一乡,德合一君,而征一国者”也都作了否定,并且对顺便提及的野马、尘埃、芥、大舟、朝菌、蟪蛄、冥灵、大椿、彭祖、列子等事物或者人物也都作了否定。这种全盘否定的态度,如果我们借用本文中的一个形象的词语,可以说是:笑!是的,本文也可以说是:庄子“笑”万物!

  • 人教版高中语文必修4《苏武传》教案

    人教版高中语文必修4《苏武传》教案

    二、课堂教学:1、学生简介背景:教师掌握:汉武帝开始对匈奴进行长期的讨伐战争,其中取得了三次具有决定意义的胜利,时间为公元前127年、前121年、前119年。匈奴的威势大大削弱之后,表示愿意与汉讲和,但双方矛盾还是根深蒂固。所以,到公元前100年,苏武出使匈奴时,却被扣留,并迫使他投降。《苏武传》集中叙写了苏武出使匈奴被扣留期间的事迹,热烈颂扬了他在敌人面前富贵不能淫,贫贱不能移,威武不能屈,饥寒压不倒,私情无所动的浩然正气,充分肯定了他坚毅忠贞,大义凛然,视死如归的民族气节。2、作者介绍:班固(32——92年),字孟坚,扶风安陵(今陕西咸阳市东)人。东汉著名的史学家。《后汉书·班固传》称他“年九岁,能属文,诵诗赋。及长,遂博贯载籍,九流百家之言,无不穷究。所学无常师,不为章句,举大义而已”。其父班彪曾续司马迁《史记》作《史记后传》,未成而故。

  • 人教版高中语文必修4《李清照词两首》教案

    人教版高中语文必修4《李清照词两首》教案

    2.【提问】《醉花阴》反映的是早年丈夫赵明诚游宦在外,作者一个人留在家中的生活状况和内心感受。对于这样的“闺怨”题材,应当怎样评价呢?【明确】作者作为一个封建时代的妇女,能够坦率地表达出自己对于丈夫深深的思恋之情,描写了闺中生活的孤独寂寞,这在当时乃是一种很大胆的行为。所以,有人批评说:李清照作词是“无顾忌”地“肆意落笔”。其实,感情的充沛、真挚,敢于正面地展露自己的行为和内心世界,正是她创作成功的重要原因之一,也正是她的词最值得珍视的地方。3.【提问】古人常常爱用花比喻人之美貌,如“芙蓉如面柳如眉”,“人面桃花相映红”等,而李清照却说“人比黄花瘦”,这样的比喻有什么丰富的内涵?【明确】黄色的菊花不止外形上雅淡、清秀,与作者因相思而消瘦的体态相近,而且在菊花品格的传统象征意义上,也酷似作者清高、淡泊的精神,这样的比喻正比较恰切地反映了当时作者由于离开丈夫而孤独、愁闷的生活状态和内心情感。

  • 人教版高中语文必修4《柳永词两首》教案

    人教版高中语文必修4《柳永词两首》教案

    (一)上片:描写杭州的自然风光和都市的繁华“东南形胜,三吴都会,钱塘自古繁华”,“东南形胜”,是从地理条件、自然条件着笔写的。杭州地处东南,地理位置很重要,风景很优美,故曰:“形胜”。“三吴都会”,是从社会条件着笔写的。它是三吴地区的重要都市,那里人众荟萃,财货聚集,故曰:“都会”。“钱塘自古繁华”,这一句是对前两句的总结,因为杭州具有这些特殊条件,所以“自古繁华”。下面就对“形胜”、“都会”和“自古繁华”进行铺叙。“烟柳画桥,风帘翠幕,参差十万人家”是对“三吴都会”的展开描写。“云树绕堤沙。怒涛卷霜雪,天堑无涯”是对“东南形胜”的展开描写。这里选择了钱塘江岸和江潮两种景物来写。“市列珠玑,户盈罗绮,竞豪奢”是对“钱塘自古繁华”的展开描写。描写了两个方面:一是商业贸易情况——“市列珠玑”,只用市场上的珍宝,代表了商业的丰富、商业的繁荣;二是衣着情况——“户盈罗绮”,家家披罗着锦。“竞豪奢”,又总括杭州的种种繁华景象。

  • 人教版高中语文必修3《琵琶行 并序》教案

    人教版高中语文必修3《琵琶行 并序》教案

    9、在乐曲终了之后,诗人以“东船西舫悄无言,唯见江心秋月白”两句结尾,这两句作用如何?明确:诗人没有直接写听者的热烈反响以说明琵琶女技艺非凡和乐声的感人至深,否则过于直白就不含蓄,不含蓄也就显不出深沉了。用“东船西舫悄无言”的寂静无声,反衬“有声”的音乐效果,可谓“此时无声胜有声”了。人们无声地沉浸、陶醉在艺术的享受之中,那深深打动人的乐声仿佛缭绕迂回耳际,不由得使诗人想到了自己浩茫的心事,引起情绪上的波澜。在这片刻的沉寂中,只见一轮迷蒙的冷月荡漾在江心的微波之中,它提醒诗人从乐声中回到现实中来。这句景物描写点染烘托了浓重的氛围,与复杂的乐声融为一体,共同表现了琵琶女与诗人息息相通的复杂情感,是那么的忧愤、哀怨凄楚、苍凉,给整个音乐形象补足了画龙点睛之笔。

  • 人教版高中语文必修3《宇宙的边疆》教案

    人教版高中语文必修3《宇宙的边疆》教案

    一、内容与解析从古代运用天文方法确定耕作时间,到现代对宇宙形成演变的种种假设,对宇宙的探索,已经成为人类生活的一部分。宇宙从何而来,向何而去,人类从何而来,向何而去,这些基本问题不仅具有科学意义,而且具有哲学的意味。以前教材中没有出现过解说词,但是在日常生活中,我们经常接触到各类解说词,可以让学生联系实际,了解解说词的特点;也可以找来其他科学电视片,结合视觉画面,让学生全面地感受解说词的特点。二、教学目标及解析(一)教学目标1.引导学生联系实际,了解解说词的特点。2.引导学生了解一些有关宇宙的基础知识。3.引导学生借助文中精辟的议论和热烈的情感抒发,了解作者对宇宙和人类的思考,并引发自己的思考。

  • 人教版高中语文必修4《张衡传》教案

    人教版高中语文必修4《张衡传》教案

    采用明段意分段法:先逐段概括段意,然后用合并同类项法把相关联紧缩密的自然段合在一起。全文五个自然段中,二、三、四自然段讲的都是张衡取得的科学成就,自然应合为一大段。这样,就理清了文章的结构。全文可分为三个部分:(1)写张衡的品格和文才①(2)写张衡在科学技术上取得的成就(②③④)(3)写张衡的政治才干(⑤)第二部分是文章的重点,又可分为两层:一是仕途情况,以及制作浑天仪和著《灵宪》、《算图论》的情况;一是专门介绍候风地支仪。显然,后者又是第二部分的重点。作者这样处理文章的详略安排。无疑是非常正确的,因为张衡一生有多方面的才能和成就,而他在科技方面的才能和创造发明最为突出,理应成为本文记叙的重点。四、小结1.了解全文的内容和结构,掌握明段意分段法。2.了解文章的详略安排。五、作业

  • 人教版高中语文必修4《长亭送别》教案

    人教版高中语文必修4《长亭送别》教案

    三.分析第三部分:1.夫妻赠诗表现了二人怎样的心情?提示:崔莺莺告诫张生切勿忘记她;张生则发誓永无别恋。这充分展示了二人深厚的情谊。2.怎样理解[耍孩儿]中的典故?提示:“红泪”借王嘉《拾遗记》的典故,司马青衫借白居易《琵琶行》的典故,表现主人公因离别而生的伤心之情。“伯劳飞去燕西归”则用牛郎织女的典故表现两人缠绵难舍的心情。3.[五煞]表明了主人公怎样的心情?提示:对张生的生活的关心,千叮万嘱,真情自现。4.[二煞]中所用是几个典故?这些典故的作用是什么?提示:三个典故,见课本。其作用是表明崔莺莺对张生的担心。四.分析第四部分:1.[一煞]中再写环境,其作用是否与先前所写相同?提示:稍有不同,这里是表现崔莺莺目送张生远去时那种凄怆悲苦的眷恋之情。以所见之物,写内心深藏之情。2.[收尾]中写‘残照’其含义是什么?提示:以“残照”表现内心的怅惘失意之情。

  • 人教版新课标高中地理必修2第一章第一节人口的数量变化教案

    人教版新课标高中地理必修2第一章第一节人口的数量变化教案

    材料四:印度提倡“只生一个好”——鼓励三人小家庭 生男生女都一样材料五:印度尼西亚《人口发展与幸福家庭法》材料六:我国基本国策 计划生育(小结)通过对以上材料的分析我们可以得出这样的结论,不同的国家应该采取不同的人口政策,对与发达国家来说人口增长缓慢,应采取鼓励生育,吸引移民的措施;发展中国家人口增长较快,实行控制人口的政策已经迫在眉睫。不论是发达国家还是发展中国家共同的目标就是实现环境人口和社会经济的协调发展。【课堂小结】这节课我们主要学习了人口的自然增长,影响人口自然增长的因素有哪些?(人口的自然增长率和人口的基数)世界人口的数量在不同的历史时期表现出不同的特征,同一历史时期的不同地区,人口数量的增长又有不同的特点。面对不同的人口形势,各国应采取不同的人口政策。

  • 人教版高中地理必修1第一章第一节宇宙中的地球教案

    人教版高中地理必修1第一章第一节宇宙中的地球教案

    【总结讲解】地球为生命物质的存在提供了三个最优越的条件,这也是其它行星不具备的条件——(1)日地距离适中(1.496亿km),使地表平均气温为15℃,有利于生命过程的发生和发展;地球上的温度,还有利于水的液态存在。适合生物呼吸的大气: (2) 地球的体积、质量适中,吸引大量气体聚集在地球周围,又经过漫长的演化,形成了以氮、氧为主的适合生物呼吸的大气。(3)海洋的形成: 由于地球内部放射性元素衰变致热和原始地球重力收缩及地球内部的物质运动等形成了原始大洋,地球最初的单细胞生命就出现在大洋中。(备注:此部分可以模拟演示或讲解地球存在生命的温度、大气、水等条件;假设地球温度过高或过低对地球生命的影响;引导学生分析地球大气、温度与地球水的关系)【板书】1、日地距离适中2、地球的体积、质量适中3、液态水的存在【启发提问】 宇宙中是否只有地球上存在有生命物质?

  • 新人教版高中英语必修3Unit 4 Space Exploration-Reading For Writing教学设计一

    新人教版高中英语必修3Unit 4 Space Exploration-Reading For Writing教学设计一

    另一方面,其余的人反对这个计划,因为它可能会导致一些不好的影响。7.I hold the belief that space exploration not only enable us to understand how the universe began but also help us survived well into the future.我坚信探索太空不仅能够使我们了解宇宙的起源而且能够帮助我们更好地走进未来。8.I think we should spend more time and money exploring space so as to provide new and better solutions to people's short­term and long­term problems.为了给人类的短期和长期问题提供更新和更好的解决方法,我认为我们应该花更多的时间和金钱来探索太空。9.From my point of view,it is wrong of young people to depend on their telephones too much,which may do harm to both their physical and mental health.在我看来,年轻人过度依赖手机是不对的,因为它们可能会对他们的身心健康都有害。最近你班同学就“人类是否应该进行宇宙探索”这个问题进行了激烈的讨论。有人认为,探索宇宙不仅让人类更好地了解宇宙的发展,还可以用来指导农业生产,以及把一些探索太空的高新技术用于现实生活;也有一些人认为探索太空花掉了大量的人力物力;影响了人们的生活水平。请你根据以下情况写一篇报告并发表自己的观点。注意:1.写作内容应包括以上全部要点,可适当发挥,使上下文连贯;

  • 新人教版高中英语必修3Unit 5 the value of money-Reading For Writing教学设计一

    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!

  • 新人教版高中英语必修3Unit 4 Space Exploration-Listening&Speaking&Talking教学设计一

    新人教版高中英语必修3Unit 4 Space Exploration-Listening&Speaking&Talking教学设计一

    Listening and Speaking introduces the topic of “talking about how to become an astronaut”. This period is aimed to inform students some details about the requirements of being an astronaut. Students can be motivated and inspired by the astronauts. Teachers ought to encourage students to learn from them and let them aim high and dream big.Listening and Talking introduces the theme of "talk about life in space". This part also informs students more details about life in space and can inspire students to be curious about this job. 1. Guide students to listen for numbers concerning dates, years and ages etc2. Cultivate students' ability to talk about how to become an astronaut and life in space ; 3. Instruct students to use functional sentences of the dialogue such as “ first of all, I am not sure, so what might be .. I guess.. I wonder…I am curious…)appropriately.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to guess the meaning of words in listening; discuss with their peers how to become a qualified astronaut and describe the life in space.Part 1: Listening and SpeakingStep 1: Lead inPredictionThe teacher can ask students to predict what the listening text is about by looking at the pictures.About how to become an astronaut./the requirements of an astronautStep 2: Then, play the radio which is about an interview a. And after finishing listening for the first time, the students need to solve the following tasks.

  • 人教版新课标PEP小学英语三年级上册Happy Birthday(全英文版)说课稿

    人教版新课标PEP小学英语三年级上册Happy Birthday(全英文版)说课稿

    1. Do some exercise on the paper. There are four kinds of exercise here. The exercise 1 is to develop Ss’ ability of listening. Exercise 2 is to practice Ss’ ability of knowing the words. Exercise 3 is to develop Ss’ ability of speaking numbers and letters. Exercise 4 is to make Ss know the words and letters well. These exercises can consolidate the new knowledge from different styles of problems.2. Then tell Ss that we can sing the numbers like “ Do, re, mi, fa, so, la, ti, do” and let them listen to a song named “Do, Re, Mi”. Add some extra knowledge so that Ss will be glad to see that the numbers can be used in another way.Step 4 Homework1.Read the numbers from 1 to 7 and 7 to 1 five times.2.Read the letters “u, v, w” five times follow the tape.Reading is a useful way for the Ss of Grade One to practice the knowledge. Ask Ss to imitate reading from the tape in order to make Ss have a good habit of listening and let them have a better pronunciation.Step 5 Board writingI ‘ll put the seven numbers like a scale(音阶)as I’ll let Ss know that we can sing out the numbers. When it comes to listen to the song, I ‘ll draw a musical note on Bb. Unit 9 Happy birthday!sevensixfivefourthree U u V v W wtwo pupil five windowoneThat’s all for my class designing. Thank you for listening!

  • 新人教版高中英语必修3Unit 1 Festivals and celebrations-Discovering Useful Structure教学设计

    新人教版高中英语必修3Unit 1 Festivals and celebrations-Discovering Useful Structure教学设计

    4.That was an experience that frightened everyone. →That was _____________________. 答案:1. taking 2. being discussed 3. in the reading room 4. a frightening experienceStep 6 The meaning and function of V-ing as the predicative动词-ing形式作表语,它通常位于系动词后面,用以说明主语“是什么”或“怎么样”一种表示主语的特质、特征和状态, 其作用相当于形容词; 另一种具体说明主语的内容, 即主语等同于表语, 两者可互换。The music they are playing sounds so exciting. 他们演奏的音乐听起来令人激动。The result is disappointing. 结果令人失望。Our job is playing all kinds of music. 我们的工作就是演奏各种音乐。Seeing is believing. 眼见为实。Step 7 Practice1. It is ________(amaze) that the boy is able to solve the problem so quickly.2. Buying a car is simply _______(waste) money. 3. Please stop making the noise—it’s getting ________(annoy). 4. complete the passage with the appropriate -ing form.La Tomatina is a festival that takes place in the Spanish town Bunol every August. I think many food festivals are __________ because people are just eating. however, this festival is _________ because people don't actually eat the tomatoes. Instead, they throw them at each other! the number of people ________ part in this tomato fight, can reach up to 20,000, and it is a very __________ fight that lasts for a whole hour. The _______ thing is how clean Bunol is after the tomatoes are washed away after the fight. this is because the juice form tomatoes is really good for making surfaces clean!答案:1. amazing 2. wasting 3. annoying4. boring interesting taking exciting amazing

  • 新人教版高中英语必修3Unit 1 Festivals and Celebrations-Listening &Speaking&Talking教学设计

    新人教版高中英语必修3Unit 1 Festivals and Celebrations-Listening &Speaking&Talking教学设计

    The theme of this section is “Talk about festival activities and festival experiences”.Festival and holiday is a relaxing and interesting topic for students. This part talks about the topic from the daily life of students’. In the part A ---Listening and Speaking, there are three conversations among different speakers from three countries(Japan, Rio and China), where the speakers are participating in or going to participate in the festivals and celebrations. So listening for the relationship among them is a fundamental task. Actually, with the globalization and more international communication, it is normal for Chinese or foreigners to witness different festivals and celebrations in or out of China. In the Conversation 1, a foreign reporter is interviewing a Japanese young girl who just had participated in the ceremony of the Coming-of-Age Day on the street and asking her feeling about the ceremony and the afterwards activities. Conversation 2, Chinese girl Li Mei is witnessing the Rio Carnival for the first time, and her friend Carla gives her some advice on the costumes which enables her to match with the carnival to have a good time. Conversation 3, a Chinese guide is showing a group of foreign visitors around the Lantern Festival and introducing the customs of the festival to them. The three conversations have a strong vitality and insert the festival and cultural elements from different countries. So perceiving the festivals and cultures from different countries is the second task. At the same time, the scripts also insert the targeted grammar --- v-ing as attributive and predicative, which students can perceive and experience in a real context and make a road for the further study. That is the third task. In the Part B--- Listening and Talking, the theme is “Talk about festival experience”, which is the common topic in our daily conversations. During the conversation, Song Lin, a Chinese student, asked Canadian friend Max about how to spend Christmas. In the conversation, Song Lin talked about experience and the feelings during the Chinese Spring Festival, during which there are not only some enjoyable things but some unpleasant things. After the listening, perhaps students find there are some similarities between Christmas and the Chinese Spring Festival as there are some differences in the origins and celebrations. For example, people always visit friends and relatives, decorate their houses, have a big dinner together, chat and give presents to each other.

  • 新人教版高中英语必修3Unit 1 Festivals and Celebrations-Reading for writing教学设计二

    新人教版高中英语必修3Unit 1 Festivals and Celebrations-Reading for writing教学设计二

    Step 3 Analyzing article structureActivity 31. Teachers raise questions to guide students to analyze the chapter structure of this diary and think about how to describe the festival experience. (1)What should be included in the opening/body/closing paragraph(s)?(2)How did the writer arrange his/her ideas?(3)What kind of interesting details did the writer describe?(4)How did the writer describe his/her feelings/emotions during the event?2. Students read and compare the three sentence patterns in activity 2. Try to rewrite the first paragraph of the diary with these three sentence patterns. After that, students exchange corrections with their partners. Such as:●This was my first time spending three days experiencing the Naadam Festival in China’s Inner Mongolia Autonomous Region and it was an enjoyable and exciting experience. ●I'll never forget my experience at the Naadam Festival because it was my first time to watch the exciting Mongolian games of horse racing, wrestling, and archery so closely. ●I'll always remember my first experience at the Naadam Festival in China’s Inner Mongolia Autonomous Region because it was so amazing to spend three days witnessing a grand Mongolian ceremony. Step 4 Accumulation of statementsActivity 41. Ask the students to read the diary again. Look for sentences that express feelings and emotions, especially those with the -ing form and the past participle. Such as:● …horse racing, wrestling, and archery, which are all so exciting to watch. ● some amazing performances● I was surprised to see…● I was a little worried about. . . ● feeling really tiredOther emotional statements:●I absolutely enjoyed the archery, too, but the horse races were my favourite part. ●I'm finally back home now, feeling really tired, but celebrating Naadam with my friend was totally worth it. ●He invited me back for the winter to stay in a traditional Mongolian tent and cat hot pot. I can’t wait!2. In addition to the use of the -ing form and the past participle, the teacher should guide the students in the appreciation of these statements, ask them to memorize them, and encourage them to use them reasonably in writing practice.

  • 人教版新课标高中地理必修2第一章第三节人口合理容量教案

    人教版新课标高中地理必修2第一章第三节人口合理容量教案

    生:环境承载力是指环境能持续供养的人口数量。师:对了。但是有同学仍然会感到这是一个很抽象的概念。下面我们具体来了解什么是环境承载力。我们可以从两个部分去理解:一、环境,它主要是指环境的单个要素(如:土地、水、气候、植被等。)及其组合方式。二、是承载力,它指在特定的条件下,具体某事物能承受的某种活动的最大值。那环境承载力的科学定义是怎样表达的呢?生:环境承载力是指某一时期,某种状态条件下,某地区环境所能承受的人类活动作用的阈值。师:很对。 我们可以用一个生动的例子来说明。一只木桶里面的水的多少在底面积固定不变的情况下是由哪块木板来决定?生:最短的那块。师:确实如此。这就是我们平常所讲的 “木桶效应”。那影响环境承载力的大小也是由环境个要素里面最紧缺的那个要素来决定的。下面我们用一个例子来印证一下。

  • 人教版新课标高中地理必修2第一章第二节人口的空间变化教案

    人教版新课标高中地理必修2第一章第二节人口的空间变化教案

    1.促使美国成为一个移民国家的因素是:①美洲属于未开发的新大陆,需要大量的劳动力;②欧洲失业工人和破产农民增加,人们为了追求更好的经济待遇迁往美洲;③新航线的开辟为人们顺利迁移扫除了障碍;④殖民扩张是人口迁移的促进因素,加快了人口迁移的过程。导致美国人口在本土范围内频繁迁移的原因,归纳起来有:第一次人口迁移是战争因素,第二次是城市化;第三次是自然环境、经济环境的变化;第四次是经济格局的变化,即西部和南部新资源的发现和新兴工业的发展。2.我国古代的人口迁移,深受统治者及其行政力量的束缚。封建帝王为了加强本国的经济和军事实力,对人口迁移严加控制。只有当战乱发生的时候,这种控制才得到削弱,人们为了躲避战乱,寻找安定的生活环境,不得不进行大规模的迁移。我国近几十年的人口迁移主要是由生产资料和劳动力数量上的地区分布不平衡造成的,是经济因素在起主导作用,与古代的人口迁移截然不同。

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