Develping ideas部分分為兩部分：第一部分是一篇說明文，介紹了不同植物之間的交流方式，尤其是“植物萬維網(wǎng)”通過地下真菌連接而成，植物間可以彼此交流信息甚至分享食物，但也會(huì)散播有毒物質(zhì)攻擊其他植物。通過學(xué)習(xí)，引導(dǎo)學(xué)生探索大自然的未知領(lǐng)域。第二部分為觀察日志，鼓勵(lì)學(xué)生通過研讀記錄水仙花生長過程的日志，觀察向日葵的生長過程并仿寫日志，培養(yǎng)學(xué)生對植物的興趣，進(jìn)而熱愛植物、研究植物、保護(hù)植物。
Presenting ideas部分選取了幾個(gè)自然紀(jì)錄片中的動(dòng)植物介紹，讓學(xué)生了解不同物種的特點(diǎn)、生存現(xiàn)狀。同時(shí)，推薦一部自己喜歡的自然紀(jì)錄片。
課時(shí)目標(biāo)：
1.掌握本課時(shí)的重點(diǎn)詞匯myth、detect、link、as well as、cmmunicate with、drive away、side by side、face up、cntribute t以及重要句型，并能熟練運(yùn)用。
2.掌握描述性說明文的文體特征及擬人的修辭手法，并根據(jù)自己的觀察寫一篇日志。
3.了解植物神秘的交流方式，促使學(xué)生進(jìn)一步研究植物，研究大自然，熱愛大自然，加深對單元主題意義的認(rèn)識(shí)。
重點(diǎn)難點(diǎn):
重點(diǎn)：
1.掌握重點(diǎn)詞匯myth、detect、link、as well as、cmmunicate with、drive away、side by side、face up、cntribute t的用法。
2.了解植物觀察日志及寫作技巧。
3.推薦一部喜歡的自然紀(jì)錄片。
4.引導(dǎo)學(xué)生通過學(xué)習(xí)文章，理解文章傳遞的信息：觀察自然、勇于實(shí)踐、勇于探索。
難點(diǎn):
觀察日志的寫作技巧。
教學(xué)準(zhǔn)備：
教師準(zhǔn)備：
1.準(zhǔn)備好該部分內(nèi)容的PPT和相關(guān)資料。
2.有關(guān)植物間相互交流的更多事例。
學(xué)生準(zhǔn)備：
1.用簡短的英語描述植物間的交流方式。
2.上網(wǎng)查資料：植物間的交流方式。
教學(xué)過程：
Step I Lead-in
1. Lk at the pictures and tick what plants can d.
2.Talk abut what else yu think plants can d and give examples.
【設(shè)計(jì)意圖】通過圖片，引發(fā)學(xué)生的思考，將話題帶入植物的行為，自然導(dǎo)入后面要學(xué)習(xí)的文章。
Step Ⅱ Reading
1.Fast reading.
(1) Read the passage and find ut the ways in which plants cmmunicate.
(2) Match the parts with the main ideas.
①Part1(Paras.1~2)_________________________________________________
②Part2(Paras.3~5)_________________________________________________
③Part3(Para.6)____________________________________________________
【設(shè)計(jì)意圖】通過設(shè)置段意匹配題目，引導(dǎo)學(xué)生提取段落的關(guān)鍵信息，同時(shí)也提高概括和歸納能力。
2.Careful reading.
(1) Read the passage carefully and answer the questins.
（2）Read the passage again and tell what yu learnt frm it.
【設(shè)計(jì)意圖】通過閱讀文章選擇正確答案，加深了對主題意義的理解。說出自已從文中學(xué)到的內(nèi)容則是說出自已的感受，類似于讀后感，比復(fù)述課文又增加了難度，是更高的一種語言表達(dá)形式，是深層加工文章、升華文章的過程。
（3）Language pints.
Master the wrds and phrases：
myth，detect，link，as well as，cmmunicate with，drive away，side by side，face up，cntribute t
【備注】詞匯知識(shí)點(diǎn)講解詳見第二教案“新知探究”。
3.Pst-reading
(1) D Activity 3 n Page 58.
Organise infrmatin frm the passage and cmplete the diagram.
Mdern research is shwing that plants can①____________.
Using chemicals
·The plant releases chemicals②__________ that are being eaten.
·When anther plant detects the chemicals. it starts t③___________.
Using sund
·Sme plants make nises④__________.
·A chilli plant can⑤___________.
·Sme trees make⑥___________.
Using the“wd wide web”
·This fungal netwrk links⑦_(dá)___________.
·Plants can ⑧_________ with each ther.
·Plants can⑨________t attack ther plants
Maybe ne day we will be able t “talk” with plants.
【設(shè)計(jì)意圖】該題以思維導(dǎo)圖的形式將植物間傳遞信息的方式分為三類，簡單明了，讓學(xué)生根據(jù)關(guān)鍵詞回扣原文，通過原文定位法找到答案，鍛煉學(xué)生獲取關(guān)鍵信息的能力
（2）D Activity 4 n Page 58.
Befre ding the activity，teacher explains persnificatin t students.
Wrk in grups. Give a talk abut cmmunicatin between living things.
【設(shè)計(jì)意圖】通過擬人的手法讓學(xué)生對植物之間的交流進(jìn)行描述，有助于學(xué)生加深對主題的理解，進(jìn)一步保護(hù)自然、愛護(hù)大自然。
Step Ⅲ Writing an bservatinal jurnal
1. D Activity 5 n Page 59.
Read the bservatinal jurnal and answer the questins.
·Hw were the daffdil bulbs planted?
·In what envirnment did the leaves grw?
·What d the flwers lk like?
2. D Activity 6 n Page 59.
(1) Wrk in pairs. Lk at the pictures and talk abut hw the sunflwer grws.
(2) Write yur bservatinal jurnal abut the sunflwer.
3.D Activity 7 n Page 59.
Wrk in pairs.Make imprvements t each ther’s bservatinal jurnals and share them with the class.
【設(shè)計(jì)意圖】該部分通過具體的觀察日志的實(shí)例展示，教會(huì)學(xué)生觀察日志的寫作方法和包含要素，然后展示圖片，讓學(xué)生認(rèn)真觀察，并寫出觀察日志，達(dá)到學(xué)以致用的目的。
Step IV Presenting ideas
1. Wrk in grups. Lk at the infrmatin abut the nature dcumentaries and answer the questins.
·Can yu guess what secrets f nature are revealed in these dcumentaries?
·What ther nature dcumentaries have yu watched?
Which ne d yu like mst? Give yur reasns.
2. Chse ne nature dcumentary yu like and cmplete the ntes.
3.Practise presenting infrmatin abut yur dcumentary. Cnsider the fllwing：
（1）the structure f yur presentatin
（2）useful wrds，expressins and structures
4.Give yur presentatin t the class.
【設(shè)計(jì)意圖】該部分通過觀察圖片，思考以前曾經(jīng)看過的關(guān)于自然界的紀(jì)錄片，并通過記述要點(diǎn)的形式記錄自己喜歡的紀(jì)錄片。根據(jù)提示，完成紀(jì)錄片的要點(diǎn)描述，并向全班展示，進(jìn)一步提高學(xué)生的書面表達(dá)能力和分享意識(shí)。
Step V Hmewrk
Review the language pints learnt in class.
板書設(shè)計(jì)：
□ attack
□ mve
□ breathe
□ speak
□ eat
□ steal
□ sleep
□ think
Suggested answers：
Plants can cmmunicate with each ther by using chemicals, sund and“wd wide web”.
A. Different ways f cmmunicatin plants using.
B. Scientists’ new research abut talking plants.
C. Maybe ne day we will knw enugh abut plant cmmunicatin t be able t “talk”with plants.
Suggested answers：
①B ②A ③C
①Which ne is the scientific new research?
A. Plants can really talk with each ther.
B. Talking trees can give advice and warnings.
C. Trees can talk with animals and peple.
D. Plants have the ability t cmmunicate with each ther.
②When will plants use chemicals t cmmunicate with each ther?
A. When they feel thirsty.
B. When they need fertilizer.
C. When they get threats frm uter envirnment.
D. When they hear nises and send signals t call r help.
③Which is the secnd methd plants using t cmmunicate mentined in the passage?
A. Send chemicals t call fr help.
B. Use sund t give signals t their neighburs.
C. Link nearly all plants in a frest with webs.
D. Cntact each ther t warn f threats.
④In which way is the wd wide web similar t the Internet?
A. Bth can link all things in the system tgether.
B. Bth have the same cmmunicating systems.
C. Bth bring cnvenience t peple’s life.
D. Bth need advanced science and technlgy.
⑤What’s the main idea f the passage?
A. Plants als have secrets.
B. Plants can talk with animals and peple.
C. Plants need prtecting urgently.
D. Plants can cmmunicate in their wn way.
Suggested answers：
①D ②C ③B ④A ⑤D
Suggested answers：
①cmmunicate with each ther
②frm the leaves
③release its wn, different chemicals
④with their rts
⑤tell if a neighburing plant is helpful, r unfriendly
⑥clicking nises when there is nt enugh water, indicating drught is arriving
⑦the rts f different plants t each ther
⑧share infrmatin and even fd
⑨steal fd frm each ther, r spread pisns
①Read the passage again and talk abut hw plants cmmunicate.
②Think abut and discuss the fllwing ways f cmmunicatin in the animal wrld.
·Bees“dance”t signal t ther bees that they have fund fd.
·Ants cmmunicate with each ther thrugh tuch，chemical signals, mving their bdies and even using their legs t make sunds.
What ther ways can yu think f?
③Organise yur ideas fllwing the steps belw.
·Begin with what living things yu have chsen t talk abut.
·Explain hw they cmmunicate and give examples.
·Cnclude by explaining what we have learnt frm their behaviur.
④Give a talk t the class abut cmmunicatin between living things.
Suggested answers：
·They were planted side by side in sil, with the pinted ends facing up.
·The leaves grew in a sunny, but cl place.
·The flwers are yellw and white, and shaped like trumpets.
1 June
6 July
26 July
Suggested answers：
An bservatinal jurnal abut the sunflwer
1 June
Cvered with 1~2 cm f mist sil, the sunflwer seed takes a few days t cme up after being planted. Water has been added regularly and the hard seed cat sftens in the damp sil t allw the first rt t pierce dwnwards and the first leaves t push t the sil surface.
6 July
The rt cntinues t grw dwnwards. The single stem grws hllw and smth, revealing large spade-shaped leaves frm the grwing tip. Gradually, the plant’s grwing tip reveals the first hints f develpment f the flwer bud. The plant stem becmes mre wdy.
26 July
Abut three weeks after the flwer bud first becmes visible at the tip f the sunflwer stem, it enlarges and begins t reveal a flattened disc. Over the curse f ne week, the yellw ray flrets, the disc flrets blm acrss the cre f the sunflwer blssm. It is yellw, lking beautiful.
life
(2009,UK)
Brn in china
(2016, China, US&UK)
The Private Life f Plants
(1995,UK)
Big Cats
(2018,UK)
Title：___________________________________________________________
Main theme：_____________________________________________________
Reasns yu recmmend it：________________________________________
________________________________________________________________
________________________________________________________________
Unit5 Revealing nature
Perid Ⅲ Develping ideas & Presenting ideas
I. Lead-in
1. Lk at the pictures and tick what plants can d.
2. Talk abut what else yu think plants can d and give examples.
Ⅱ. Reading
1. Fast reading.
2. Careful reading.
3. Pst-reading.
Ⅲ. Writing an bservatinal jurnal
IV Presenting ideas
V. Hmewrk

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高中英語外研版 (2019)選擇性必修 第一冊電子課本

Unit 5 Revealing nature

版本： 外研版 (2019)

年級(jí)： 選擇性必修 第一冊

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