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新人教版高中英語必修2Unit 3 The Internet-Discovering Useful Structure教案二
This teaching period mainly deals with grammar “The Present Perfect Passive Voice.” To begin with, teachers should lead students to revise what they have learned about the Present Perfect Passive Voice. And then, teachers move on to stress more special cases concerning this grammar。This period carries considerable significance to the cultivation of students’ writing competence and lays a solid foundation for the basic appreciation of language beauty. The teacher is expected to enable students to master this period thoroughly and consolidate the knowledge by doing some exercises. 1. Guide students to review the basic usages of the Present Perfect Passive Voice2. Lead students to learn to use some special cases concerning the Present Perfect Passive Voice flexibly.2. Enable students to use the basic phrases structures flexibly.3. Strengthen students’ great interest in grammar learning.1. Help students to appreciate the function of the Present Perfect Passive Voice in a sentence2. Instruct students to write essays using the proper the Present Perfect Passive Voice.觀察下列句子特點，總結(jié)共同點。1．(教材P28)Much has been written about the wonders of the World Wide Web．2．(教材P28)But the Internet has done much more for people than simply make life more convenient．3．(教材P28)Many people have been helped by the club．4．(教材P28)She no longer feels lonely, and her company has become quite successful．5．(教材P32)Today I thought I’d blog about a question that has been asked many times—how do you stay safe online and avoid bad experiences on the Internet?
新人教版高中英語必修2Unit 3 The Internet-Reading and Thinking教案二
Q5：What's Jan's next goal?Her next goal is to start a charity website to raise money for children in poor countries.Q6：What can we learn from her experiences?We learn that when we go through tough times, we can find help and support from other people online. We learn that we can feel less lonelyStep 5: While reading---rethinkingQ1: What is Jan’s attitude to the Internet ?Thankful/Grateful, because it has changed her and her life.Q2: What writing skills is used in the article ?Examples(Jan’s example, the 59-year-old man’s and the 61-year-old woman’s example)Q3: Can you get the main idea of the article ?The Internet has changed Jan’s life/Jan’s life has been changed by the Internet.Step 6 Post reading---Retell the storyMuch has been written about the wonders of the World Wide Web. There are countless articles (1)telling(tell) us how the Internet has made our lives more convenient. But the Internet has done a lot (2)more(much) for people than simply make life more convenient. People’s lives (3) have been changed(change) by online communities and social networks so far. Take Jan for example, who developed a serious illness that made her (4)stuck(stick) at home with only her computer to keep (5)her(she) company. She joined an online group (6)where she could share problems, support and advice with others. She considered the ability to remove the distance between people as one of the greatest (7)benefits(benefit). She was so inspired (8)that she started an IT club in which many people have been helped. She has started to learn more about how to use the Internet to make society better. Her next goal is to start a charity website to raise money (9)for children in poor countries. Jan’s life has been (10)greatly(great) improved by the Internet.
新人教版高中英語必修2Unit 3 The Internet-Reading for Writing教案二
8. However, the more polite you are, the less likely it is you will be attacked. 然而, 你越有禮貌, 你被攻擊的可能性就越小。 Step 8 Writing---the articleHow to stay safe in the online chat roomToday I thought I’d blog about a question that has been asked many times--- how do you stay safe online and avoid bad experiences in the online chat room ? I’m not an expert, but many years as a blogger have taught me a thing or two.First of all, there’s the golden rule of the Internet: keep out of what makes you uneasy. Don’t post comments or click on anything. Second, protect your privacy. Don’t give out too much private information like your address, phone numbers, the ID numbers, etc. Third, be polite. If you are polite to others on the Internet, you won’t be attacked in normal situation. Finally, don’t believe in others easily and never meet someone you met online alone. It is very dangerous.Have you had any bad experiences online, or do you have some good advice for staying safe? Post your comments below!Step 9 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1. Does the writer tell the reader what he/she know about the topic ?2. Are the tips and suggestions well organised ?3. Has the writer defined the new words ?4. Does the author include examples, comparison, or explanations ?5. Does the writer end by asking readers to leave comments and/or suggestions ?6. Can you find any grammar or spelling mistakes.Step 6 HomeworkPut up your revised draft in the classroom or read it to your class.
新人教版高中英語必修2Unit 4 History and Traditions-Discovering Useful Structure教案二
This teaching period mainly deals with grammar: The past participle is used as attributive and objective complement.1. Guide students to review the basic usages of the past participle used as attributive and objective complement.2. Lead students to learn to use some special cases concerning the past participle used as attributive and objective complement flexibly.3. Strengthen students’ great interest in grammar learning.1. Help students to appreciate the function of the past participle used as attributive and objective complement.2. Instruct students to write essays using the past participle used as attributive and objective complement.Step1:溫故而知新。Analyze the underlined phrases and then sum up the common usages of the past participles.1．(教材P41)They had castles built(build) all around England, and made changes to the legal system．2．(教材P42)They use the same flag, known(know) as the Union Jack，．．．3．(教材P42)Judy and I had our car parked(park) in an underground car park near Trafalgar Square, where we could get our car battery charged(charge)．Common points: f the past participle used as attributive and objective complement.Step 2:過去分詞作定語時的意義1．及物動詞的過去分詞作定語，在語態(tài)上表示被動；在時間上，常表示動作已經(jīng)發(fā)生或完成，有時也不表示時間性。Our teacher watched us doing the experiment and gave us a satisfied smile at last．我們的老師看著我們做實驗，最后給了我們一個滿意的微笑。The plan put forward at the meeting will be carried out soon．會上提出的計劃將很快被執(zhí)行。2．不及物動詞的過去分詞作定語，它不表示被動意義，只強調(diào)動作完成。Many little kids like gathering fallen leaves in the yard．
新人教版高中英語必修2Unit 4 History and Traditions-Reading and Thinking教案二
Step 5 While reading---Task 3Read the text again and answer the following questions.Q1: How many countries does the UK consist of ?4 Q2: What are the four countries of the United Kingdom?England, Wales, Scotland and Northern Ireland Q3: Which two were the first to be joined together ?England and WalesQ4: What are the two chief advantages of studying the history of a country ?The first one is to help you understand more about the country and its traditions.The second one is to make visiting it more enjoyable.Q5: What’s the author’s attitude towards studying the history ?Supportive/positiveStep 6 Post reading---Retell the textThe United Kingdom, Great Britain, Britain, England—many people are confused by (1)_____ these different names mean. In the 16th century, the nearby country of Wales (2) __________(join) to the Kingdom of England. In the 19 th century, the Kingdom of Ireland was added to create the United Kingdom of Great Britain and Ireland. Finally, the southern part of Ireland (3) ______ (break) away from the UK, which resulted in the full name we have today. However, most people just use the (4)_________(shorten) name: the UK. The four countries (5)__________ belong to the United Kingdom work together in some areas. There were four sets of invaders and the last group were the Normans. They had castles (6)_________(build) all around England and made changes (7)__________ the legal system. Studying the history of the country will make your visit much more (8)_________(enjoy). The capital city London is (9)___ ancient port city that has a history (10)______(date) back to Roman times. 1. what 2.was joined 3.broke 4.shortened 5.that 6. built 7.to 8.enjoyable 9.an 10.dating Step 6 Homework
新人教版高中英語必修2Unit 4 History and Traditions-Listening＆Speaking＆Talking教案二
Listening and Speaking introduces the topic of “Take part in a youth project”. The listening text is an interview about "sharing views on historical sites". Through listening to a dialogue between Chinese and foreign students on the way to the Confucius Temple, students can understand their views on the Confucius Temple, Confucius, Confucius' descendants and Confucius' educational thoughts, so as to realize and think about the profound influence of Confucius and his thoughts on Chinese historical tradition. At the same time, the dialogue naturally integrates English idioms and mentions Shakespeare, the British playwright, so as to provide language materials and context for students to understand English idioms and related cultural allusions, as well as to compare Chinese and foreign cultures, which is helpful for students to understand and express the language such as history, tradition, culture and custom significant impact.Text analysis: listening text is a dialogue between a British student and a Chinese student when he goes to the Confucius Temple. When William, a British student, visited the Confucius Temple, he asked Xiao Kong, a Chinese student, for directions. Xiao Kong was just going to the Confucius Temple to meet with the members of the research group, so they went together and exchanged their views on the Confucius Temple, Confucius, Confucius' descendants and Confucius' educational thoughts. From the perspective of foreign tourists, this paper describes their thoughts on Confucius, the great son of Confucius, who had a profound impact on Chinese history and cultural tradition, and his education.Listening and Talking introduces a visit to a historic tourist destination. Tourism is a common way to understand a country's history, culture, and customs and so on. Students listen to the dialogue between Xiao Yan, a youth hostel Usher, and Paul, a backpacker, to learn about Pingyao's famous historical and cultural attractions and Paul's travel experience and experience as a foreign tourist.
新人教版高中英語必修2Unit 3 The Internet-Listening &Speaking＆Talking教案二
From the pictures in the text and the title--- choose the best app, we can know that this part is about how to save money by using apps.Step 2 While-listening1. Laura and Xiao Bo are talking about apps. Listen to their conversation and find out what apps they want.Xiao Bo is looking for a(n) exercise app to help him get in shape.Laura would like an app for getting rich and another that will make her grades better.2. Listen again. Are the sentences true T or false F?1). Both of Xiao Bo's apps keep track of the steps he takes._____2). Xiao Bo's second app can help him make a fitness plan._____3). Laura needs an app that will help her get discounts.______4). Laura needs an app that will add money to her bank account._______F T F T3. Listen once more and tick the sentence you hear. Underline the words used to express predictions, guesses, and beliefs.Predictions, Guesses, and Beliefs________It might help me walk more.________My guess is that it wouldn't work.________I imagine this app would help me get fit faster________I suppose that would be good.________I guess you could save a little with this app.________I suppose there would be some problems, too.________I believe this app could help me get thinner.
大班閱讀《蛤蟆爺爺?shù)拿卦E》說課稿
二、說教材繪本《蛤蟆爺爺?shù)拿卦E》講述的是一種動物的生存之道，具有教育價值和現(xiàn)實意義。故事線索清晰，畫面簡單易懂，情節(jié)趣味性強，既富有神秘感，又帶有一定的驚險與刺激。所以對大班的幼兒來說，該繪本學習過程應該是快樂的，是充滿激情的，更是收獲豐厚的。三、說活動目標1.了解故事內(nèi)容，理解“秘訣”“勇敢”“機智”等詞語的含義。2.對角色表情和動作的觀察，大膽想象、推測、判斷故事情節(jié)，并用自己的方式進行表達。3.感受閱讀活動、語言交流帶來的樂趣。四、說重點難點重點：故事的前半部分，采用典型畫面導讀，師幼共同閱讀繪本，通過互動、分享、體驗等多種方式積累、豐富詞匯，在互動閱讀中輕松地理解了相關(guān)詞匯。難點：在故事的后半部分，采用自主交流閱讀的方式，創(chuàng)造了一個更為寬松、自由的想象和語言交流環(huán)境，鼓勵幼兒依據(jù)畫面線索講述故事、大膽推測、想像故事情節(jié)的發(fā)展。五、說教法課件演示法：在繪本閱讀中合理使用繪本 PPT，根據(jù)色彩鮮艷的畫面操作有助于孩子對故事的理解。討論交流法：在交流過程中既能發(fā)展幼兒的語言表達能力，又能將自己獲得的經(jīng)驗與同伴分享交流。觀察法：在本次活動中注重孩子觀察能力的培養(yǎng)，創(chuàng)設(shè)觀察的機會，合理地加以指導，如引導孩子細致觀察遇到危險時小蛤蟆和爺爺不同反應和做法等。
人教版高中生物必修1降低化學反應活化能的酶說課稿
實驗是學習生物的手段和基礎(chǔ)，是培養(yǎng)學生分析問題、解決問題的能力及創(chuàng)造能力的載體。新課程倡導：強調(diào)過程，強調(diào)學生探索新知識的經(jīng)歷和獲得新知的體驗，不能在讓教學脫離學生的內(nèi)心感受，必須讓學生追求過程的體驗。并且每年高考都有對生物學實驗的考查，而且比例越來越重，而學生的失分比例大，主要在于他們沒有完整的生物實驗設(shè)計模式，考慮問題欠缺，本節(jié)安排在第二課時完整講述高中生物學實驗設(shè)計，是以學生在第一課時和前面探究實驗接觸的前提下，完整體驗生物實驗設(shè)計模式，為后面學習探究實驗打下基礎(chǔ)，也為培養(yǎng)學生分析問題、解決問題從一開始就打好基礎(chǔ)。五、說教學過程：第一課時聯(lián)系生活，導入新課，激發(fā)學生學習興趣→細胞代謝→問題探究，酶在代謝中的作用，掌握科學實驗方法→酶的本質(zhì)，運用方法，自主歸納獲取新知→小結(jié)練習，突出重點易化難點
人教版高中政治必修4哲學的基本問題說課稿（一）
五．說教學過程：（重點）1.課題引入：課堂探究導入新課。采用教材現(xiàn)成的探究活動導入新課，既“溫故”又“知新”，還節(jié)約了課堂有效時間。2.講授新課：（20-25分鐘）本課的重難點是關(guān)于哲學基本問題的解釋，我引用一個很著名的學生也略知一二的唯心主義觀點的例子（課堂探究1）順利進入本課重要知識點的學習，采用案例教學，激發(fā)學生的興趣以及探究問題的欲望，學習哲學基本問題的第一個方面，并用問題和練習形式鞏固知識，強化學生易錯已混知識點；課堂探究2，同樣引用哲學上的著名案例讓學生分析探究思考以及合作交流，學生趣味濃厚，主動深入學習本課知識，達到預期教學目的。此時，本課的重點知識教學完成。關(guān)于本課的第二個知識點“為什么思維和存在的關(guān)系問題是哲學的基本問題”采用學生自主閱讀、合作交流的方法，歸納總結(jié)，完成本知識目標。3.課堂反饋、知識遷移（10-15分鐘）采用學生總結(jié)、隨堂練習等形式鞏固本課知識，同時檢驗教學效果?？墒箤W生更深刻的理解教學重點。
部編人教版四年級下冊《 巨人的花園》精彩片段說課稿
師：巨人看見孩子們在花園里玩耍，大聲叱責。請把巨人叱責的話找出來讀一讀。（生邊讀邊畫出巨人叱責孩子們的語句，文中主要有三句）師：讀一讀這三句話，聯(lián)系上下文想一想：巨人說這些話的時候，心里可能是怎么想的？他說話的時候可能是什么樣子的？生：巨人說：“你們在這兒干什么？”這時他可能瞪著眼睛，臉上通紅通紅的，雙手叉著腰，心里想：這是我的花園！你們這些小家伙隨便進來，真討厭！生：巨人說：“我自己的花園就是我自己的花園?！边@時候，比他剛回來時更煩，樣子更兇。巨人肯定在想：我孤獨地度過了漫長的寒冬，好不容易才盼來春天，你們這些小家伙又來了！這時，他可能攥著拳頭，唾沫飛出老遠。生：“除了我自己以外，我不允許任何人在里面玩。”巨人心里可能想，這是我的地方，我已經(jīng)說了不讓你們進來，你還敢進來！巨人說不定已經(jīng)邁開大步準備去教訓這個小男孩。
部編人教版四年級下冊《 飛向藍天的恐龍》精彩片段說課稿
師：是呀。早在19世紀，英國學者赫胥黎就注意到恐龍和鳥類在骨骼結(jié)構(gòu)上有許多相似之處。在研究了大量恐龍與鳥類化石之后，科學家們提出，鳥類不僅和恐龍有親緣關(guān)系，而且很可能就是一種小型恐龍的后裔。但相關(guān)化石一直沒有找到。直到20世紀末期生：在課文中找出相關(guān)段落齊讀。師：（投影出示再讀）你讀懂了什么？生：我知道了化石是首次發(fā)現(xiàn)，是在遼西發(fā)現(xiàn)……（學生交流）師：欣喜若狂，是什么意思？生：高興到了極點，就要發(fā)狂了。師：研究者們?yōu)槭裁磿绱说馗吲d？（設(shè)計意圖：由點帶面，通過重點詞語的理解，感受科學家的艱辛與執(zhí)著。）
部編人教版四年級下冊《 寶葫蘆的秘密（節(jié)選）》精彩片段說課稿
深入理解，探討故事師：寶葫蘆的主人是個什么樣的人呢？你是從哪些語句中感受到的。生：寶葫蘆的主人是一名普通的少先隊員，名叫王葆。師：你從哪里得到這些信息的？生1：“我姓王，叫王葆?！睅煟簽槭裁床徽f“我叫王葆”？生2：這樣說，比較正式，有儀式感。生3：“可是我要聲明，我并不是什么神仙，也不是什么妖怪。我和你們一樣，是一個平平常常的普通人。”師：為什么說王葆說“我并不是什么神仙，也不是什么妖怪”？生：因為他和寶葫蘆有故事，是傳說中的那種寶葫蘆和王葆發(fā)生過一些故事。出示：“至于寶葫蘆的故事，那我從小就知道了。那是我奶奶講給我聽的。”師：奶奶給“我”講了哪些故事？
高中歷史人教版必修一《第2課秦朝中央集權(quán)制度的形成》說課稿
【課件展示】《秦朝中央集權(quán)制度的建立》《教材簡析》《教學目標》《教法簡介》《教學過程設(shè)計及特色簡述》【師】本節(jié)內(nèi)容以秦代政治體制和官僚系統(tǒng)的建立為核心內(nèi)容，主要包括秦朝中央集權(quán)制的建立的背景、建立過程及影響。本節(jié)內(nèi)容在整個單元中起到承前啟后的作用，在整個模塊中也有相當重要的地位。讓學生了解中國古代中央集權(quán)政治體制的初建對于理解我國古代政治制度的發(fā)展乃至我們今天的政治體制是十分必要的。 本堂課我采用多媒體和講授法及歷史辯論法相結(jié)合，通過巧妙設(shè)計問題情境，調(diào)動學生的學習積極性，使學生主動學習，探究思考。教師引導和組織學生采取小組討論、情景體驗等方式，達到教學目標。 本節(jié)內(nèi)容分三個部分，下面首先看秦朝中央集權(quán)制度建立的前提即秦的統(tǒng)一
部編人教版四年級下冊《文言文二則》教案
一、談話交流，導入課題。1.同學們，《鑿壁偷光》的故事大家聽說過嗎？【課件出示2：圖文】匡衡勤奮好學，可是家境貧寒，晚上想讀書而無燭照明。鄰居家倒是每到夜晚，總燭光明亮，可惜這光照不到他匡衡的屋里。怎么辦呢?匡衡便把自己家靠鄰舍的那堵墻壁鑿開一個洞以引鄰居家的燭光來讀書。古時候，還有一位熱愛讀書的人，他是晉代車胤，因為家貧，沒錢買燈油，而又想晚上讀書，便在夏天晚上抓一把螢火蟲來當燈讀書。2.這個故事就是《囊螢夜讀》，今天，我們來學習一下這個小故事。（板書：囊螢夜讀）學生齊讀課題。3.這是一篇文言文。千古傳誦，流傳至今。4.補充文言文知識：文言文人們通常說古文。我國是一個文明古國，我國古代有著燦爛的文化，有著浩如煙海的文學藝術(shù)瑰寶，他們都是以文言文的形式記載下來的。我們要去傳承民族的瑰寶，就要學好文言文?！菊n件出示3】
人教版高中政治必修4人的認識從何而來說課稿（一）
展示學習過的物理學內(nèi)容：伽利略的“比薩斜塔”實驗，證明了：兩個鐵球同時落地。得出結(jié)論：實踐是檢驗認識正確與否的唯一標準。（因為這點理解起來有點難，所一教師要適當?shù)闹v解）A、一種認識是否是真理不能由這一認識本身回答B(yǎng)、客觀事物自身也不能回答認識是否正確地反映了它C、實踐是聯(lián)系主觀與客觀的橋梁。人們把認識和實踐的結(jié)果對照,相符合,認識就正確?！?實踐是認識的目的和歸宿：走進社會：（課本P46歸國博士案例）從這個故事中我們可以得到什么啟示？得出結(jié)論：實踐是認識的歸宿和目的。啟發(fā)學生學以致用，eg：紀中的學生研究地溝油簡易檢測方法（靈活利用身邊的教學資源）?！景鍟O(shè)計】實踐是認識的基礎(chǔ)（板書）投影：逐步展示本課知識結(jié)構(gòu)圖。學生通過回憶，讓學生有直觀的認識，學習內(nèi)容一目了然。1．實踐是認識的來源。2．實踐是認識發(fā)展的動力。3．實踐是檢驗認識的真理性的唯一標準。
高中思想政治人教版必修三《文化創(chuàng)新的途徑》說課稿
二、說學情本課的教學對象為高二學生，他們思維活躍已具備一定歸納能力和分析、綜合能力，能夠自主地分析現(xiàn)實生活中的一些文化行為，但看問題往往比較偏激、片面，缺乏良好的邏輯思維能力。所以，在文化創(chuàng)新的途徑上要對他們進行指導，以免走入誤區(qū)。三、教學目標根據(jù)新課程標準、教材特點、學生的實際，我確定了如下教學目標：【知識與能力目標】1.理解文化創(chuàng)新的根本途徑和兩個基本途徑;2.了解文化創(chuàng)新過程中需要堅持正確方向，克服錯誤傾向。
人教版高中生物必修3第四章第四節(jié)《群落的演替》說課稿
總結(jié)與大自然和諧相處走可持續(xù)發(fā)展道路。在我們的努力下地球一定能為我們?nèi)祟愄峁└玫纳姝h(huán)境這部分的設(shè)計意圖是培養(yǎng)學生綜合實踐能力把新知識內(nèi)化為學生生活行為中的具體行動。五、說板書設(shè)計這樣設(shè)計能直觀形象地體現(xiàn)知識結(jié)構(gòu)、突出重點難點、利于鞏固新知識。六、說作業(yè)設(shè)計1、課本P80練習——常規(guī)作業(yè)主要為鞏固和落實認知目標服務(wù)。2、活動與探究以“警惕外來物種入侵”為題寫一篇科普文章?！_放性作業(yè)學生在自主完成任務(wù)的同時可以相互合作通過自主學習所獲得的成果經(jīng)共享共同整理、歸納、分類得到一種比較完整的答案。七、說教學反思1、本節(jié)教學過程主要重視運用“動態(tài)發(fā)展觀”來組織實施教學用歷史性的眼光從縱向進行尋蹤綜合利用視頻、圖片等直觀教具動態(tài)地展示群落演替的過程幫助學生更好地理解群落演替的過程及本質(zhì)。
人教版高中生物必修1細胞的能量“通貨”─ATP說課稿
（3）ATP的利用關(guān)于ATP的利用，一是要講清楚吸能反應和放能反應與ATP的分解和合成的關(guān)系，二是要充分利用教材上的圖解，讓學生在看懂圖解的基礎(chǔ)上，討論ATP還有哪些用途，從而對該圖解進行補充和完善。3、課堂小結(jié)，強化認識。ATP作為能量的“通貨”，在生物體生命活動中具有重要的意義。我們不僅要知道ATP的分子結(jié)構(gòu)，還要掌握ATP是如何行使他的貨幣能力。4、板書設(shè)計結(jié)束：本節(jié)課設(shè)置了一系列問題情境，層層設(shè)問，在學生答問、質(zhì)疑、討論過程中讓學生建構(gòu)新概念和新的知識體系，并通過教師及時掌握反饋信息，適時點撥、調(diào)節(jié)，讓學生在推理判斷中培養(yǎng)良好的思維習慣和對知識的遷移能力，而且通過留出一定的時間讓學生提問，體現(xiàn)了以學生為主體的思想。我的說課完畢，謝謝大家。
人教版高中生物必修3第一章第一節(jié)《細胞生活的內(nèi)環(huán)境》說課稿
1. 該節(jié)內(nèi)容屬于人教版高中生物必修三《穩(wěn)態(tài)與環(huán)境》第一章第一節(jié)的內(nèi)容：細胞生活的環(huán)境。本節(jié)內(nèi)容主要突出的是內(nèi)環(huán)境的概念，為下一節(jié)穩(wěn)態(tài)的重要性及下一章動物和人的生命活動的調(diào)節(jié)做鋪墊。2. 教學目標：（1）知識目標：①描述內(nèi)環(huán)境的組成和理化性質(zhì)。②說明內(nèi)環(huán)境是細胞與外界環(huán)境進行物質(zhì)交換的媒介。（2）能力目標：①通過思考與討論培養(yǎng)學生語言表達能力②通過相關(guān)練習培養(yǎng)學生知識遷移的能力（3）情感目標：關(guān)注維持內(nèi)環(huán)境穩(wěn)態(tài)與健康的關(guān)系。＊目標確定依據(jù)：主要根據(jù)課標要求及教材內(nèi)容特點。3.重難點及依據(jù)（1）重點：①內(nèi)環(huán)境的組成和理化性質(zhì)。②內(nèi)環(huán)境是細胞與外界環(huán)境進行物質(zhì)交換的媒介。＊依據(jù)：根據(jù)課標要求，同時是高考考點。（2）難點：①內(nèi)環(huán)境的組成和理化性質(zhì)。②內(nèi)環(huán)境是細胞與外界環(huán)境進行物質(zhì)交換的媒介。＊ 依據(jù)：學生缺少相關(guān)的有機化學的知識基礎(chǔ)，且內(nèi)容相對枯燥抽象。