一. 說教材(Textbook)
在人教版高一英語的下冊的Unit 19，曾經談論過一些關于農業的話題，學生對中國早期的出名的農業家賈思勰有了一定的了解。人教版高三英語的Unit 4這個單元以Green World 為話題，讓學生初步了解一些植物學方面的內容，如植物的分類、栽培以及植物學的發展的歷程等等；語言技能和很多的語言點幾乎都是圍繞介紹綠色世界這一中心話題而展開的。要求學生能夠運用所學的內容對相關話題進行流利的表述。
在READING部分，介紹了植物學正式成為一門科學的歷史形成過程。重點介紹了兩個為植物學發展做出過卓越貢獻的重要人物林厄尼斯與班克斯。他們以獨特的歸類的方式對植物進行分類，從而征服了整個世界。
在POST-READING 部分，針對READING部分的相關內容設計了5個練習。第1個練習以選擇填空的形式考查學生對課文細節內容的了解。第2-5小題以問句的形式進一步考查學生對課文重點內容的了解。
二．說教學目標（Teaching goals）
1.讓學生了解植物這一學科的形成，并了解一個學科的形成需要經過漫長的時間及幾代的科學家的努力和奮斗。
2.使學生了解科學家為科學事業所作的努力及其奮斗精神。
3.培養學生查找細節，分析主題從而提高學生的閱讀理解能力。
4.學習一些有用的詞匯和短語。
5.加深對閱讀技巧（Scanning and skimming method）的理解及運用。
1. Target language語言目標
1).Learn some important words and phrases(學習一些有用的詞匯和短語)
merely, classify, identification, male, promote, botanical, privilege, cosy, wealth, expense reward, appetite output, accumulate, abandon, distinguish, appoint, calculate , astronomy, enterprise, settlement, abandon, on a large scale, look out for
2). Learn some important sentences(學習一些重要句子)
A. Attempts had been made by others to classify plant species into groups, but the breakthrough came with the work of Carl Linnaeus. P30
B. In 1768, the Royal Navy appointed James Cook as the commander of the Endeavor to take members of the Royal Society on an expedition to Tahiti. P31
C. He also looked out for new economic species: plants that could be grown in England or other parts of the world to produce crops that could be sold. P31
D. Banks was the first to move crops from one continent to another on a large scale, helping to develop local economies with these new imports. P31
2. Ability goals 能力目標
Enable students to talk about “Botany” and say something about the development history of botany. Help the students to know the contribution of the three important persons to the science of botany. Try to improve the reading ability of the students.
三. Teaching important and difficult points說教學重點及教學難點
Help students to understand the whole passage. Help students to know how to use some key words and understand the meaning of some difficult sentences.
四．說教學方法和學法指導Teaching methods and study guide
在本單元的Reading當中,文章比較長,有很多有的新單詞,個別的句子非常難理解,學生在閱讀當中一定會遇到一定的困難。因此，我采用了一些靈活的實用的教學方法（如Scanning and skimming method和Task-based method），幫助學生理解文章的內容，努力提高閱讀課的教學效果。具體做法如下：
1. 解讀標題 The Birth of a Science. 這能幫助學生快速了解文章的內容。對提高閱讀效果有很大的幫助。 老師可向學生設問：What is Botany?讓學生思考并回答。
2. 通讀課文，了解細節。老師可向學生提出問題：How many people are mentioned in the passage? 讓學生快速閱讀并尋找此問題的答案。
3. 深層了解,歸納課文大意。What is the main idea of the passage? 讓學生歸納文章的大意，從而幫助學生理解整篇文章的內容。
4. 升華主題。What can we learn from the passage? 讓學生能聯系實際，學有所獲。
5. 讓學生進行分組（Pair work/ Group work）的討論（Discussion），加深學生對課文的理解，進一步調動學生學習的積極性。
五．說教具準備Teaching aids
A recorder, a notebook computer and a projector.
六．說教學過程Teaching procedures
Step 1.Presentation
Step 2 Fast reading
Step 3 Listening
Step 4 Exercises
Step 5 Post reading
Step 6 Language points
Step 7 Homework
Step 1.Presentation
What is Botany? Science of studying plants is called BotanyStep 2 Fast reading (Reading material):
A. Pre-reading questions:
B. Fast-reading questions:( 3minutes)
§主旨大意
■ The text“The Birth of a Science”mainly tells us _________ ．
A．the importance of botany
B．how to classify plant species into groups
C．the history and development of botany
D．Linnaeus’discoveries about different species§推理判斷
●Captain Cook made ________voyages altogether around the world.
A．one B．two C.three D. fourC .Intensive-reading questions: (5-10minutes)( ppt. is better for students to understand)
What were the goals of James Cook’s first voyage around the world?
Key: three goals: the first goal was to observe the planet Venus when it passed across the sun. This would get the astronomers to have a chance to work out the distance between the earth and the sun. The second goal was to record, classify and describe all plants and animal life observed during the trip. The third goal was that Captain Cook was given secret instructions to search for an unknown southern continents.
Step 3 Listening
How many people are mentioned in the passage? Who were they?
Carl Linnaeus
Daniel Solander
Joseph Banks
Captain Cook
Step 4 Exercises
1.Before Linnaeus, botany was ________．
A．studied by doctors B．unknown to anyone
C．fully developed D．a branch of medicine
2. Some economic species plants such as____could help to develop local economies．
A．rose and peony B．tea and apple
C．cocoa and hemp D．Cocoa and lemon
3. It was ____ who made Kew(地方名) a centre of scientific and economic research．
A．Joseph Banks B．Captain Cook
C．Linnaeus D． Daniel Solander
4.Paragraph one of the text mainly tells us ___ ．
A．the importance of botany B．how to classify plant species into groups
C．Linnaeus’ contribution to botany D．Linnaeus’ discoveries about different species
5.Captain Cook made ___voyages altogether around the world.
A．one B．two C．three D.four
Step 5 Post reading
1.Why was Karl Linnaeus important to the history of botany as a science?
Because his idea of grouping plants in families was ______. The identification of different species was based on the arrangement of the female and male organs in the flowers.
2.How did scientists classify plants before Linnaeus?They classified plants into _____ and herds according to the shape of the _____ and whether they had flowers or not.
3 What were the goals of James Cook’s first voyage around the world?
There are _____. First ,it was to study the passing of the planet Venus. Second,it was to record and classify all plant and animal life. Third, it was to search for unknown southern land.
4 Why did Banks have to supply his own money to equip part of the expedition?
Because the __________ would not pay for all the equipment and expenses.5 What did Banks do in his later life?
He was involved in enterprise exploration of Africa and settlement of Australia. He developed a
great botanical _______ and so on.
Step 6 Language points
P1.
1. according to 根據 2. whether they have flowers or not 是否3. at first sight. 第一眼，乍看
4. make attempt to do sth 嘗試著做…
e.g. He made no attempt to take a medical degree.
We failed in our attempt to climb the mountain.
5. classify …. into 把．．編排，分類
e.g. Children in school are classified into grades.
Eggs are classified according to the size.
6. group plants in families ( 動植物的)科
We can group animals into several types.
7. base on/ base sth on sth 把…建立在…的基礎之上
We base our hope on the good news we had yesterday.
8. as a result/ as a result of 由于，作為…的結果
9.be related ( to sb/ sth) 和…有聯系
He is related to her by marriage( 他與她是姻親)
P2 develop a lifelong friendship with sb 和…建立終生的友誼
P3
1. lead / live a ……life ( cosy, simple, happy) 過著…的日子
2. have an appetite for sth 愛好….
I have an appetite for classical music.
3. born into a life of privilege( born of) 生于…的家庭
P4.
1. appoint sb as…任命….為….
2. on an expedition to sp 對…進行遠征
3. search for /search /look for/ discover/ find 辨析
P5
1.強調句型
It was the British government that paid for all the equipment and expenses for that part of the expedition.
2.pay for/ pay back/ pay off/ pay down(用現金支付，當場支付)／pay up(付清全部欠款)/ pay a visit to sb/ pay sb/sth a visit/ pay attention to/ pay one’s respect to sb(拜訪， 拜見) / pay honor to sb (向…致敬)
P6
1. species ( means, works, series) 單復數同型，作主語時，注意謂語動詞單復數．
2. Joseph Banks did not only study and describe new plants he found, but also looked out for new economic species: plants that could be grown in England or other parts of the world to produce crops that could be sold.
3. look out for 警惕，留心
4.on a large scale 大規模的，大范圍的
5. Banks was the first to do…
only, last ,next 序數詞 ，形容詞最高級常用不定式修飾
P7
1. The voyage had been a great success. (c) 成功的人或事
2 wonderful discoveries had been made of strange new lands, ….
3. be involved in / involve sb in 和…有聯系； 參與…. 活動
4. It was Joseph Banks who made Kew a centre of scientific and economic research.
強調句型
Step 7 Homework