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人教版高中語文必修1《燭之武退秦師》教案
四、講讀第一段（10分鐘）1．抽生朗讀本段，注意生字詞讀音。2．講析本段譯釋由學(xué)生完成，師只作扼要補(bǔ)糾和簡要分析。分析內(nèi)容包括伏筆手法和語句深意，全段作用。3．讓學(xué)生齊讀全段。4．處理練習(xí)一之中的第1小題，要求學(xué)生試譯回答，然后指導(dǎo)學(xué)生背誦本段。五、講讀第二段（15分鐘）1．抽生朗讀本段，注意生字詞讀音。2．講析本段①重點(diǎn)講析三個文言詞“若”、“之”、“辭”的用法和人物對話。②字詞句的理解仍然注意發(fā)揮學(xué)生的能動性，讓他們完成為主，師糾補(bǔ)為輔。對要求掌握的三個文言詞的用法要板書列于黑板上，對話部分要讓學(xué)生試作語氣練習(xí)。③小結(jié)的內(nèi)容包括情節(jié)的曲折性、寫法的詳略和表達(dá)的特點(diǎn)。3．生齊讀本段，然后處理相關(guān)練習(xí)。
人教版高中語文必修4《李賀小傳》教案
一、明確目標(biāo)1．注意小傳的寫作特色，如小傳的“小”以及是怎樣小中見大的。2．引導(dǎo)學(xué)生進(jìn)行綜合把握和比較閱讀以更好地理解課文內(nèi)容，看看在寫法上各自有什么不同。3．一詞多義的準(zhǔn)確知識運(yùn)用二、整體感知1．解題李商隱的《李賀小傳》有別于一般傳記文的客觀直敘，是一篇性情之文；同時也和作者的詩歌風(fēng)格相異，寫得樸實(shí)自然而又不乏意趣。2．本文所體現(xiàn)的“小傳”的特點(diǎn)本文最大的特點(diǎn)在于：小傳雖小，但小中有大、以小見大。其“小”在于：作者并沒有全面勾勒詩人李賀的一生，對他的生平經(jīng)歷也記敘不多，而是選取了他生活中的若干小片段進(jìn)行插敘，以小片段撐起傳記的主干。此外，在篇幅上，全文寥寥數(shù)百字，語言極為精練。而其“大”又體現(xiàn)在：極小極短的篇幅卻具有很大的容量，集敘事、議論和曲折的抒情于一體。內(nèi)容渾厚，意味深長。
人教版高中語文必修5《歸去來兮辭（并序）》教案
【教學(xué)目標(biāo)】1.理解作者反抗黑暗，辭官歸田，不與當(dāng)時黑暗的上層社會同流合污而熱愛田園生活的積極精神，學(xué)習(xí)其高潔的理想志趣和堅定的人生追求。2.掌握“胡、奚、曷、焉、何”五個疑問代詞，歸納“行、引、乘、策”等四個詞的一詞多義，了解“以、而、之、兮、來”等文言虛詞的用法。3.背誦全文?！窘虒W(xué)重點(diǎn)】1.了解作者辭官歸田的原因，深刻體味詩人鄙棄官場，熱愛田園的無限欣喜之情。2.背誦全文?！窘虒W(xué)難點(diǎn)】1.理解記述中滲透出的或喜或哀，或決絕或猶疑的復(fù)雜感情。2.歸納實(shí)詞、虛詞的用法，掌握省略句、倒裝句兩種句式。【教具準(zhǔn)備】投影儀投影膠片【課時安排】2課時【教學(xué)過程】第一課時[教學(xué)要點(diǎn)]了解陶淵明及其作品。讀課文，利用注釋、工具書，初步把握文章，朗讀課文，找出押韻的字，由押韻歸納各層大意，幫助學(xué)生理清背誦思路，背誦全文。[教學(xué)步驟]一、導(dǎo)語《桃花源記》是我們在初中接觸過的陶淵明的作品。師生一同背誦?！短一ㄔ从洝分杏崎e自得的田園生活正是作者精神追求的形象反映。今天我們學(xué)習(xí)的《歸去來兮辭》正是作者決別官場，同上層社會分道揚(yáng)鑣的宣言書。
人教版高中語文必修5《咬文嚼字》教案
【教學(xué)過程】第一課時一、導(dǎo)入新課清代唐彪在《讀書作文譜》中引用武叔卿的話說：“文章有一筆寫成不加點(diǎn)綴而工者，此神到之文，尚矣。其次須精思細(xì)改，如文章草創(chuàng)已定，便從頭至尾—一標(biāo)點(diǎn)?！蓖瑢W(xué)們能列舉出文學(xué)史上的作家哪些屬于前者，哪些屬于后者嗎？前者有李白。后者如賈島、王安石、歐陽修、曹雪芹等。（賈島有關(guān)于推敲的典故。王安石修改“春風(fēng)又綠江南岸”句傳為佳話。歐陽修《醉翁亭記》的開頭便是精心改成的?！都t樓夢》更是“披閱十載，增刪五次。”）提問：古今的偉大作家為什么像李白式的詩人很少，而大多數(shù)人卻都要“咬文嚼字”，苦苦修改呢？這節(jié)課我們就來研究一下這個問題。二、整體感知1．快速瀏覽全文，熟悉主要內(nèi)容。2．根據(jù)“學(xué)習(xí)重點(diǎn)”，確立學(xué)習(xí)目標(biāo)。三、課文分析1．理清觀點(diǎn)與材料的關(guān)系。首先，讓學(xué)生找出本文在論證中所運(yùn)用的材料。
人教版高中語文必修4《蘇武傳》教案
二、課堂教學(xué)：1、學(xué)生簡介背景：教師掌握：漢武帝開始對匈奴進(jìn)行長期的討伐戰(zhàn)爭，其中取得了三次具有決定意義的勝利，時間為公元前127年、前121年、前119年。匈奴的威勢大大削弱之后，表示愿意與漢講和，但雙方矛盾還是根深蒂固。所以，到公元前100年，蘇武出使匈奴時，卻被扣留，并迫使他投降?！短K武傳》集中敘寫了蘇武出使匈奴被扣留期間的事跡，熱烈頌揚(yáng)了他在敵人面前富貴不能淫，貧賤不能移，威武不能屈，饑寒壓不倒，私情無所動的浩然正氣，充分肯定了他堅毅忠貞，大義凜然，視死如歸的民族氣節(jié)。2、作者介紹：班固（32——92年），字孟堅，扶風(fēng)安陵（今陜西咸陽市東）人。東漢著名的史學(xué)家?！逗鬂h書·班固傳》稱他“年九歲，能屬文，誦詩賦。及長，遂博貫載籍，九流百家之言，無不窮究。所學(xué)無常師，不為章句，舉大義而已”。其父班彪曾續(xù)司馬遷《史記》作《史記后傳》，未成而故。
人教版高中語文必修4《柳永詞兩首》教案
（一）上片：描寫杭州的自然風(fēng)光和都市的繁華“東南形勝，三吳都會，錢塘自古繁華”，“東南形勝”，是從地理條件、自然條件著筆寫的。杭州地處東南，地理位置很重要，風(fēng)景很優(yōu)美，故曰：“形勝”?！叭齾嵌紩?，是從社會條件著筆寫的。它是三吳地區(qū)的重要都市，那里人眾薈萃，財貨聚集，故曰：“都會”?！板X塘自古繁華”，這一句是對前兩句的總結(jié)，因為杭州具有這些特殊條件，所以“自古繁華”。下面就對“形勝”、“都會”和“自古繁華”進(jìn)行鋪敘。“煙柳畫橋，風(fēng)簾翠幕，參差十萬人家”是對“三吳都會”的展開描寫?！霸茦淅@堤沙。怒濤卷霜雪，天塹無涯”是對“東南形勝”的展開描寫。這里選擇了錢塘江岸和江潮兩種景物來寫?！笆辛兄榄^，戶盈羅綺，競豪奢”是對“錢塘自古繁華”的展開描寫。描寫了兩個方面：一是商業(yè)貿(mào)易情況——“市列珠璣”，只用市場上的珍寶，代表了商業(yè)的豐富、商業(yè)的繁榮；二是衣著情況——“戶盈羅綺”,家家披羅著錦?！案偤郎荨保挚偫ê贾莸姆N種繁華景象。
人教版高中語文必修4《哈姆萊特》教案
一、作者簡介：威廉·莎士比亞（1564～1616），英國文藝復(fù)興時期偉大的戲劇家和詩人。（人文主義：歐洲文藝復(fù)興時期新興資產(chǎn)階級反封建的社會思潮。資產(chǎn)階級人道主義的最初形式。它肯定人性和人的價值，要求享受人世的歡樂，要求人的個性解放和自由平等，推崇人的感性經(jīng)驗和理性思維。）一生共寫有37部戲劇，154首14行詩，兩首長詩和許多其他詩歌。主要代表作有早期的歷史劇、喜劇———《亨利四世》、《仲夏夜之夢》、《威尼斯商人》和《羅密歐與朱麗葉》等；中期的悲劇———《哈姆萊特》、《奧瑟羅》、《李爾王》和《麥克白》等；后期的傳奇劇———《暴風(fēng)雨》等。二、莎士比亞創(chuàng)作《哈姆萊特》的社會背景:莎士比亞是歐洲文藝復(fù)興時期英國偉大的戲劇家和詩人。他生活在歐洲歷史上封建制度日趨沒落、資本主義興起的交替時代。哈姆萊特是丹麥古代的王子。莎士比亞故意以超越時代的誤差將哈姆萊特搬到伊麗莎白統(tǒng)治未年的英國現(xiàn)實(shí)中來。
新人教版高中英語必修1Unit 4 Natural Disasters- Reading for writing教案
①標(biāo)題——標(biāo)題應(yīng)當(dāng)簡潔明了。②導(dǎo)語——導(dǎo)語是消息開頭的第一段或第一句話，簡明扼要地揭示出消息的核心內(nèi)容。③主體——主體是消息的主要部分，要用充足的事實(shí)表現(xiàn)主題，對導(dǎo)語的內(nèi)容作進(jìn)一步的展開和闡述。④結(jié)束語——通常是對全文內(nèi)容進(jìn)行概括性的總結(jié)。3. 新聞報道增分句子（1）陳述事實(shí)常用的句型:①A terrible storm hit/struck ... , killing ..②It was a cool autumn night when the earthquake happened. A large number of buildings fell down and roads were destroyed, leaving a great many people homeless.地震發(fā)生在一個涼爽的秋夜。大量的建筑物倒塌，道路被毀,許多人無家可歸。③With the help of the rescue team, people who were the trapped in the flood were saved.在救援隊的幫助下，困在洪水中的人們得救了。（2）陳述觀點(diǎn)常用的句型:①Clearly/Obviously/In my opinion/It seemed that people were shocked.顯然/在我看來/似乎人們震驚了。②The whole city was in ruins after the earthquake.地震后整個城市成了一片廢墟。（3）揭示原因常用的句型:Because of/As a result of/Thanks to the help of the army, people who got injured were sent to the hospital immediately.
新人教版高中英語必修1Unit 4 Natural Disasters-Discovering Useful Structures教案
【教材分析】This teaching period mainly deals with the grammar: the restrictive relative clauses.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 exercise of good quality.【教學(xué)目標(biāo)與核心素養(yǎng)】1. Get students to have a good understanding of the basic usages of the restrictive relative clauses.2. Enable students to use the restrictive relative clauses flexibly.3. Develop students’ speaking and cooperating abilities.4. Strengthen students’ great interest in grammar learning.【教學(xué)重難點(diǎn)】How to enable students to have a good understanding of the restrictive relative clauses, especially the uses of the relative words such as which, that, who, whom.【教學(xué)過程】Step1: 語法知識呈現(xiàn)定語從句（一）—關(guān)系代詞的用法在復(fù)合句中, 修飾名詞或代詞的從句叫定語從句。定語從句通常由關(guān)系代詞或關(guān)系副詞引導(dǎo)，說明事物的具體信息，從句位于被修飾詞之后。被定語從句修飾的詞叫先行詞，引導(dǎo)定語從句的詞叫關(guān)系詞，關(guān)系詞指代先行詞，并在定語從句中充當(dāng)成分。關(guān)系詞有兩種：關(guān)系代詞who, whom ,whose, that, which, as和關(guān)系副詞when, where, why。
新人教版高中英語必修1Welcome Unit-Discovering Useful Structures教案
II Learn the technical terms-2.1. What can be used as “Subject, Object, Predicative, Direct Object, Indirect Object and objective complement” in a sentence?2. What can be used as “adverbial” in a sentence?3. What can be used as “verb” in a sentence?Answers to questions 1-3:1. Nouns, pronouns and appellations can be used as “Subject, Object, Predicative, Direct Object, Indirect Object and Objective Complement”. Besides, adjectives can be used as “Predicative and Objective Complement” in a sentence.2. Adverbs and prepositional phrases can be used as “Adverbial”.3. Verbs with actual meaning can be used as “Verb” in a sentence. Auxiliary verbs alone cannot be used as “Verb” in a sentence.III Learn to recognize the sentence structures.1. SV structure. For Example:(1) A bird flies.S V(2) A monkey jumps.S V(3) A fish swims.S V√ In SV structures, verbs are “intransitive verbs”.2. SVO structure. For Example:(1) A sheep eats grass.S V O(2) They like bananas.S V O(3) He wants candy.S V O√ In SVO structures, verbs are “transitive verbs”.3. SP structure. For Example:(1) This is great.S P (2) He looks well.S P (3) She became a teacher.S P √ In SP structures, Predicatives are formed by “l(fā)ink verbs” and “adjectives or nouns”.√ link verbs: be, become, grow, look, feel, taste, etc.4. SV IO DO structure. For Example:(1) He asked me a question.S V IO DO(2) Danny wrote me a letter.S V IO DO(3) Billy brought Sam a kite.S V IO DO√ In SV IO DO structures, the verbs are transitive and are followed by two objectives – pronouns or nouns as Indirect Objective, and nouns as Direct Objectives.
新人教版高中英語必修1Unit 5 Languages Around the World-Reading and Thinking教案
【教材分析】本節(jié)課是高中英語第一冊的最后一個單元的閱讀和思考部分，文章難度明顯增加，體現(xiàn)在以下幾個方面：文章題材是說明文，比較難理解；話題生疏，涉及到歷史等知識；生詞量增大，而且在語境中理解詞匯的要求提高。面對這些，教師的難度和高度也要有所提升，通過探討說明順序，了解背景知識等幫助他們找到說明文閱讀的方法。【教學(xué)目標(biāo)與核心素養(yǎng)】1. 文化意識目標(biāo)新課程中指出，文化意識是對中外文化的理解和對優(yōu)秀文化的認(rèn)同。文化意識的的培養(yǎng)有助于學(xué)生增加國家認(rèn)同和家國情懷，成為有文明素養(yǎng)和社會責(zé)任感的人。我們這個單元很好體現(xiàn)了這一點(diǎn)，通過了解漢字書寫的體系和發(fā)展，學(xué)生可以有一種文化自豪感，同時也能夠幫助學(xué)生深入挖掘這篇文章，從而想到更多和中國文化相關(guān)的方面。2. 學(xué)習(xí)能力目標(biāo)
新人教版高中英語必修1Unit 5 Languages Around the World-Reading for Writing教案
Step 3: Read to sum upRead it again and sum up the problems of the three students, and then write down the advice that was given from others.Step 4: Work in pairs. List your learning problems in English and brainstorm some useful advice.Useful expressions ? I don't know how to…... Is a big difficulty for me. I cannot ...? You might try …. It's very important to…? I have no idea how/what .My biggest problem is .... ? I (also) have trouble with. My advice is …. This worked for me.? l cannot understand the teachers’ English in class.Step 5 Homework：為提高我校學(xué)生的英語口語水平，我們將舉辦英語演講比賽(English- speaking contest)，請你根據(jù)下面的信息，以學(xué)生會(the Students‘ Union)的名義寫一份海報，歡迎全校同學(xué)參加，屆時特邀本校美籍教師史密斯先生頒獎。? 報名時間 9月30日以前(報名:signup)? 報名地點(diǎn) 學(xué)生會辦公室? 比賽時間 10月9日晚7:00~9:00? 比賽地點(diǎn) 學(xué)校大會議室? 獎勵 前8名
新人教版高中英語必修1Welcome Unit-Reading for Writing教案
教學(xué)目標(biāo)知識目標(biāo)：讓學(xué)生更好理解如何恰當(dāng)?shù)貙懸粋€人的信息介紹，并能讓學(xué)生熟練地使用一些寫作技能。能力目標(biāo)：培養(yǎng)學(xué)生的寫作能力和團(tuán)隊協(xié)作能力。情感目標(biāo)：提升學(xué)生對寫作的興趣。教學(xué)重難點(diǎn) 教學(xué)重點(diǎn)：如何能讓學(xué)生更好地理解個人信息介紹。教學(xué)難點(diǎn)：如何能讓學(xué)生通過適當(dāng)?shù)厥褂靡恍懽骷寄軄韺懸黄^好的個人信息介紹。教學(xué)準(zhǔn)備 多媒體、黑板、粉筆一、Pre-class1. Greetings2. Leading-inAsk students how to write a profile. What kinds of aspects should be included? The teacher asks students to discuss the topic with each other and put forward to much more ideas about the answer.二、While-class1. The teacher lets students to read the student profiles on Page 8 silently and then asks students to discuss the questions below.1. What is Ann like? How do you know?2. What are Thando’s hobbies?3. Where does Thando come from?4. What is Thando’s dream?5. What does “You will never see me without a book or a pen” mean?
新人教版高中英語必修3Unit 1 Festivals and Celebrations教學(xué)設(shè)計一
本板塊的活動主題是“談?wù)摴?jié)日活動”（Talk about festival activities），主要是從貼近學(xué)生日常生活的角度來切入“節(jié)日”主題。學(xué)生會聽到發(fā)生在三個國家不同節(jié)日場景下的簡短對話，對話中的人們正在參與或?qū)⒁H歷不同的慶?；顒印ｋS著全球化的進(jìn)程加速，國際交流日益頻繁，無論是國人走出國門還是外國友人訪問中國，都已成為司空見慣的事情。因此，該板塊所選取的三個典型節(jié)日場景都是屬于跨文化交際語境，不僅每組對話中的人物來自不同的文化背景，對話者的身份和關(guān)系也不盡相同。1. Master the new words related to holiday: the lantern, Carnival, costume, dress(sb)up, march, congratulation, congratulate, riddle, ceremony, samba, make - up, after all. 2. To understand the origin of major world festivals and the activities held to celebrate them and the significance of these activities;3. Improve listening comprehension and oral expression of the topic by listening and talking about traditional festivals around the world;4. Improve my understanding of the topic by watching pictures and videos about different traditional festivals around the world;5. Review the common assimilation phenomenon in English phonetics, can distinguish the assimilated phonemes in the natural language flow, and consciously use the assimilation skill in oral expression. Importance:1. Guide students to pay attention to the attitude of the speaker in the process of listening, and identify the relationship between the characters;2. Inspire students to use topic words to describe the festival activities based on their background knowledge. Difficulties:In the process of listening to the correct understanding of the speaker's attitude, accurately identify the relationship between the characters.
新人教版高中英語必修3Unit 1 Festivals and Celebrations教學(xué)設(shè)計三
*wide range of origins(= a great number of different origins, many kinds of origins)*It featured a parade and a great feast with music, dancing, and sports. (=A parade and a great feast with music, dancing, and sports were included as important parts of the Egyptian harvest festival.)*.. some traditions may fade away and others may be established.(= Some traditions may disappear gradually, while other new traditions may come into being.）Step 6 Practice(1) Listen and follow the tape.The teacher may remind the students to pay attention to the meaning and usage of the black words in the context, so as to prepare for the completion of the blanks in activity 5 and vocabulary exercises in the exercise book.(2) Students complete the text of activity 5 by themselves.The teacher needs to remind the students to fill in the blanks with the correct form of the vocabulary they have learned in the text.Students exchange their answers with their partners, and then teachers and students check their answers.(3)Finish the Ex in Activity 5 of students’ book.Step 7 Homework1. Read the text again, in-depth understanding of the text;2. Discuss the origin of festivals, the historical changes of related customs, the influence of commercial society on festivals and the connotation and essential meaning of festivals.3. Complete relevant exercises in the guide plan.1、通過本節(jié)內(nèi)容學(xué)習(xí)，學(xué)生是否理解和掌握閱讀文本中的新詞匯的意義與用法；2、通過本節(jié)內(nèi)容學(xué)習(xí)，學(xué)生能否結(jié)合文本特點(diǎn)快速而準(zhǔn)確地找到主題句；3、通過本節(jié)內(nèi)容學(xué)習(xí)，學(xué)生能否理清論說文的語篇結(jié)構(gòu)和文本邏輯，了解節(jié)日風(fēng)俗發(fā)展與變遷，感悟節(jié)日的內(nèi)涵與意義。
新人教版高中英語必修3Unit 3 Diverse Cultures教學(xué)設(shè)計一
Activity 81.Grasp the main idea of the listening.Listen to the tape and answer the following questions:Who are the two speakers in the listening? What is their relationship?What is the main idea of the first part of the listening? How about the second part?2.Complete the passage.Ask the students to quickly review the summaries of the two listening materials in activity 2. Then play the recording for the second time.Ask them to complete the passage and fill in the blanks.3.Play the recording again and ask the students to use the structure diagram to comb the information structure in the listening.(While listening, take notes. Capture key information quickly and accurately.)Step 8 Talking Activity 91.Focus on the listening text.Listen to the students and listen to the tape. Let them understand the attitudes of Wu Yue and Justin in the conversation.How does Wu Yue feel about Chinese minority cultures?What does Justin think of the Miao and Dong cultures?How do you know that?2.learn functional items that express concerns.Ask students to focus on the expressions listed in activity. 3.And try to analyze the meaning they convey, including praise (Super!).Agree (Exactly!)"(You're kidding.!)Tell me more about it. Tell me more about it.For example, "Yeah Sure." "Definitely!" "Certainly!" "No kidding!" "No wonder!" and so on.4.Ask the students to have conversations in small groups, acting as Jsim and his friends.Justin shares his travels in Guizhou with friends and his thoughts;Justin's friends should give appropriate feedback, express their interest in relevant information, and ask for information when necessary.In order to enrich the dialogue, teachers can expand and supplement the introduction of Miao, dong, Lusheng and Dong Dage.After the group practice, the teacher can choose several groups of students to show, and let the rest of the students listen carefully, after listening to the best performance of the group, and give at least two reasons.
人教版高中地理必修1全球氣候變化教案
科學(xué)家預(yù)測，就地區(qū)而言，位于低緯度的大部分國家，農(nóng)作物的產(chǎn)量將減少；而位于高緯度的國家，農(nóng)作物產(chǎn)量有可能增加。由于不少發(fā)展中國家位于低緯度地區(qū)，因此，氣候變化的這種區(qū)域差異性，可能會使發(fā)展中國家所面臨的問題更為嚴(yán)峻。板書：3全球變暖將加劇水資源的不穩(wěn)定性與供需矛盾。介紹：全球變暖會影響整個水循環(huán)過程，可能使蒸發(fā)加大，改變區(qū)域降水量和降水分布格局，增加降水極端異常事件的發(fā)生，導(dǎo)致洪澇、干旱災(zāi)害的頻次和強(qiáng)度增加，以及地表徑流發(fā)生變化。隨著徑流減少，蒸發(fā)增強(qiáng)，全球變暖將加劇水資源的不穩(wěn)定性與供需矛盾。轉(zhuǎn)折：既然全球變暖會引起很多不利影響，那么作為人類應(yīng)如何面對這一挑戰(zhàn)呢？這就是我們要討論的第三個問題。板書：三、氣候變化的適應(yīng)對策討論：請大家閱讀結(jié)合教材P53氣候變化的適應(yīng)對策部分討論人類應(yīng)如何面對全球變暖這一問題 呢？
新人教版高中英語必修3Unit 4 Space Exploration-Discovering Useful Structures導(dǎo)學(xué)案
【點(diǎn)津】 1.不定式的復(fù)合結(jié)構(gòu)作目的狀語 ,當(dāng)不定式或不定式短語有自己的執(zhí)行者時，要用不定式的復(fù)合結(jié)構(gòu)?即在不定式或不定式短語之前加 for ＋名詞或賓格代詞?作狀語。He opened the door for the children to come in. 他開門讓孩子們進(jìn)來。目的狀語從句與不定式的轉(zhuǎn)換 英語中的目的狀語從句，還可以變?yōu)椴欢ㄊ交虿欢ㄊ蕉陶Z作狀語，從而使句子在結(jié)構(gòu)上得以簡化。可分為兩種情況： 1?當(dāng)目的狀語從句中的主語與主句中的主語相同時，可以直接簡化為不定式或不定式短語作狀語。We'll start early in order that/so that we may arrive in time. →We'll start early in order to/so as to arrive in time. 2?當(dāng)目的狀語從句中的主語與主句中的主語不相同時，要用動詞不定式的復(fù)合結(jié)構(gòu)作狀語。I came early in order that you might read my report before the meeting. →I came early in order for you to read my report before the meeting.
人教A版高中數(shù)學(xué)必修一函數(shù)的零點(diǎn)與方程的解教學(xué)設(shè)計（2）
本章通過學(xué)習(xí)用二分法求方程近似解的的方法，使學(xué)生體會函數(shù)與方程之間的關(guān)系，通過一些函數(shù)模型的實(shí)例，讓學(xué)生感受建立函數(shù)模型的過程和方法，體會函數(shù)在數(shù)學(xué)和其他學(xué)科中的廣泛應(yīng)用，進(jìn)一步認(rèn)識到函數(shù)是描述客觀世界變化規(guī)律的基本數(shù)學(xué)模型，能初步運(yùn)用函數(shù)思想解決一些生活中的簡單問題。1.了解函數(shù)的零點(diǎn)、方程的根與圖象交點(diǎn)三者之間的聯(lián)系.2.會借助零點(diǎn)存在性定理判斷函數(shù)的零點(diǎn)所在的大致區(qū)間.3.能借助函數(shù)單調(diào)性及圖象判斷零點(diǎn)個數(shù)．?dāng)?shù)學(xué)學(xué)科素養(yǎng)1.數(shù)學(xué)抽象：函數(shù)零點(diǎn)的概念；2.邏輯推理：借助圖像判斷零點(diǎn)個數(shù)；3.數(shù)學(xué)運(yùn)算：求函數(shù)零點(diǎn)或零點(diǎn)所在區(qū)間；4.數(shù)學(xué)建模：通過由抽象到具體，由具體到一般的思想總結(jié)函數(shù)零點(diǎn)概念.重點(diǎn)：零點(diǎn)的概念，及零點(diǎn)與方程根的聯(lián)系；難點(diǎn)：零點(diǎn)的概念的形成．
圓的標(biāo)準(zhǔn)方程教學(xué)設(shè)計人教A版高中數(shù)學(xué)選擇性必修第一冊
(1)幾何法它是利用圖形的幾何性質(zhì),如圓的性質(zhì)等,直接求出圓的圓心和半徑,代入圓的標(biāo)準(zhǔn)方程,從而得到圓的標(biāo)準(zhǔn)方程.(2)待定系數(shù)法由三個獨(dú)立條件得到三個方程,解方程組以得到圓的標(biāo)準(zhǔn)方程中三個參數(shù),從而確定圓的標(biāo)準(zhǔn)方程.它是求圓的方程最常用的方法,一般步驟是:①設(shè)——設(shè)所求圓的方程為(x-a)2+(y-b)2=r2;②列——由已知條件,建立關(guān)于a,b,r的方程組;③解——解方程組,求出a,b,r;④代——將a,b,r代入所設(shè)方程,得所求圓的方程.跟蹤訓(xùn)練1．已知△ABC的三個頂點(diǎn)坐標(biāo)分別為A(0,5)，B(1，－2)，C(－3，－4)，求該三角形的外接圓的方程．[解] 法一：設(shè)所求圓的標(biāo)準(zhǔn)方程為(x－a)2＋(y－b)2＝r2.因為A(0,5)，B(1,－2)，C(－3,－4)都在圓上，所以它們的坐標(biāo)都滿足圓的標(biāo)準(zhǔn)方程，于是有?0－a?2＋?5－b?2＝r2，?1－a?2＋?－2－b?2＝r2，?－3－a?2＋?－4－b?2＝r2.解得a＝－3，b＝1，r＝5.故所求圓的標(biāo)準(zhǔn)方程是(x＋3)2＋(y－1)2＝25.