选择性必修 第一册Unit 5 Revealing nature教学设计

这是一份选择性必修 第一册Unit 5 Revealing nature教学设计，共8页。教案主要包含了语法专练，翻译句子等内容，欢迎下载使用。

Using Language教学设计
教学目标：
By the end f this perid, Students will be able t:
Crrectly use the past perfect accrding t the cntext;
Learn sme infrmatin abut bidiversity and use them t express in different situatins;
Enhance listening ability and understand the main idea f the listening material;
Share life experiences and give sme advice r cmments.
教学重难点：
Master the structures f the past perfect and crrectly use them fr expressin.
Develp the listening ability and cmplete the tasks given in this lessn.
Learn sme infrmatin abut bidiversity and use persnal experiences f life t illustrate the understanding f the bidiversity.
教学方法：
Task-based teaching methd
教学资源：
教材、多媒体课件、学案、黑板和粉笔。
教学设计：
Step Ⅰ Lead-in
Lk at the sentences frm the reading passage and answer the questins.
a Darwin suspected that the finches had evlved frm a cmmn ancestr,...
b Many peple refused t believe that living things,including humans,had evlved frm lwer frms f life.
Questins:
1.In sentence (a),which actin happened first,“suspected” r “evlved frm a cmmn ancestr”?
2.In sentence (b),which actin happened first,“refused t believe” r “evlved frm lwer frms f life”?
3.What des the structure had dne indicate?
Suggested answers:
1.In sentence (a),“evlved frm a cmmn ancestr” happened first.
2.In sentence (b),“evlved frm lwer frms f life” happened first.
3.It indicates the actin happened befre a certain past actin.
Step Ⅱ Analysis and identificatin
Activity 1 Cmplete the paragraphs with the infrmatin frm the given sentences
1.a Natural disasters led t fd shrtages in the 1960s.
b Yuan Lngping began t d research n hybrid rice.
c Yuan Lngping develped a better type f rice.
Yuan Lngping (1) t d research n hybrid rice because natural disasters (2) fd shrtages in the 1960s.In the end,he (3) a better type f rice.
2.a Gregr Mendel chse t study pea plants because their characteristics were easy t cntrl.
b Gregr Mendel made imprtant discveries abut genetics.
c Gregr Mendel died in 1884.
Gregr Mendel (4) study pea plants because their characteristics were easy t cntrl.By the time f his death in 1884,he (5) imprtant discveries abut genetics.
Suggested answers:
1.(1)began (2)had led t (3)develped 2.(4)chse t (5)had made
Activity 2 Cmplete the nline encyclpaedia entry with the crrect frm f the wrds in the bx
cmpete decline eat live intrduce arrive
Lnesme Gerge
Lnesme Gerge was the last Pinta Island trtise.He died in 2012.After Gerge’s death,the Pinta Island trtise was declared extinct.
The extinctin f the Pinta Island trtise is blamed n humans.Befre humans 1. n the island,the species 2. in islatin and 3. the plants that naturally grew there.Gerge was discvered many years after their arrival,and by then humans 4. new species that 5. fr the fd the trtises ate.After gats in particular had been brught t the island,the Pinta Island trtise ppulatin 6. .Eventually,nly Gerge remained.
Suggested answers:
1.arrived 2.had lived 3.eaten 4.had intrduced 5.cmpeted 6.declined
Step Ⅲ Listening
Activity 1 Listen t the pdcast and chse the statements that are made
1.Bidiversity is imprtant.
2.Bacteria are always harmful t humans.
3.Sme species f bacteria are used in fd prductin.
4.Many species f bacteria recycle dead rganic matter.
5.Our immune systems are able t fight ff all germs.
Suggested answers:3,4
Activity 2 Listen again and cmplete the fact sheet
Cells
•Every living thing is 1._________________.
They are like 2.________________________.
•In the human bdy there are abut 3. human cells and arund 4. bacteria cells.
Bacteria
•Mst bacteria in the human bdy can 5. .
•In the fd prductin prcess,bacteria can 6. dead rganic matter.
Suggested answers:
1.made up f cells 2.bricks that are used t build huses 3.thirty trillin 4.thirty-nine trillin 5.help with digestin 6.break dwn
Activity 3 Cmplete the bxes with the expressins frm the pdcast
•D yu knw
•By the way,...
•Actually,...
•Have yu heard
•In fact,...
•Speaking f which,...
Checking backgrund knwledge
Adding infrmatin
Suggested answers:
Checking backgrund knwledge
D yu knw
Have yu heard
Adding infrmatin
By the way,...
Actually,...
In fact,...
Speaking f which,...
Step Ⅳ Bidiversity
Activity 1 Read the passage and answer the questins
Earth is hme t millins f different species.Sme can be very small,like bacteria and viruses,which are s small that we cannt see them with nly ur eyes.By cntrast,the largest animal species s far fund n ur planet is the blue whale,which can grw up t almst 30 metres in length and weigh ver 130,000 kils.The tughest species is prbably the water bear.This tiny rganism can survive temperatures frm 150℃ t a belw freezing -272℃.T best survive in their envirnment,each species has develped its wn unique physical characteristics.
Each year,scientists identify arund 15,000 new species.Hwever,diversity n ur planet is such,that there are still millins f species n Earth remaining t be discvered.
Questins:
1.What species are mentined and what is special abut them?
2.What ther unusual life frms d yu knw f?
Suggested answers:
1.Tw species are mentined:the blue whale and the water bear.The blue whale is the largest animal species n Earth,which can grw up t almst 30 metres in length and weigh ver 130,000 kils.The water bear is prbably the tughest species,which can survive temperatures frm 150℃ t a belw freezing -272℃.
2.Students’ wn answers.
Activity 2 Cmplete the paragraphs with the crrect frm f the wrds and expressins in the bx
ancestr scientific be native t primitive habitat appearance be hme t ecsystem
The Gal’pags Islands are renwned wrldwide fr their unique bidiversity.The Giant Trtise Reserve n Santa Cruz 1. several species f giant trtise that 2. the Gal’pags Islands.The island is als hme t the Charles Darwin Research Statin,where 3. studies are carried ut.
Mangrves are ne f the castal plants that grw n Isabela.They serve as the 4. fr varius birds and fish,and are very imprtant t the 5. .
Iguanas can be fund n San Cristóbal.They have a very special 6. ,with cmb-like spines n their back.There is evidence that all the different iguanas have develped frm mre 7. nes and share a cmmn 8. .
Suggested answers:
1.is hme t 2.are native t 3.scientific 4.habitats 5.ecsystem 6.appearance 7.primitive 8.ancestr
Step Ⅴ Discussin
Wrk in pairs.Lk at the pictures f the species native t different regins f China in the textbk.Talk abut bidiversity in China using the wrds and expressins in this sectin.D nline research t find mre infrmatin.
Nw talk abut what methds yu used t cllect the infrmatin required.Cmpare yur methds with yur partner’s and think abut which methds are mre efficient.
Step Ⅵ Hmewrk
一、语法专练。
1.His newly written nvel (translate) int English by the end f last mnth.
2.I (plan) t take a French curse last summer,but I changed the plan later.
3.It is the first time that we (talk) abut this issue face t face.
4.It was the tenth time that the Chinese wmen’s vlleyball team (claim) the wrld champinship.
5.She fund that the huse in the area (destry) by the strm.
6.They (plant) six hundred trees befre last Wednesday.
7.The band (g) n tur t prmte their new album.
8.It (rain) heavily in the last few days and muntain trrents may becme a danger at any mment.We must be prepared.
9.Silk (becme) ne f the primary gds traded alng the Silk Rad by abut 100 BC.
二、翻译句子。
1.Natural disasters led t fd shrtages in the 1960s.
2.Yuan Lngping began t d research n hybrid rice.
3.Earth is hme t millins f different species.
Suggested answers:
一、1.had been translated 2.had planned 3.have talked 4.had claimed 5.had been destryed 6.had planted 7.has gne 8.has been raining 9.had becme
二、1.20世纪60年代,自然灾害造成粮食短缺。
2.袁隆平开始研究杂交水稻。
3.地球是数百万不同物种的栖息地。
评价量规
教学反思：
本节课帮助学生总结归纳“动词的时态和语态之过去完成时”的用法，并通过对袁隆平、孟德尔实验以及对龟的介绍，巩固语法及词汇知识。此外，通过听说材料介绍细胞、细菌及地球上的一些独特物种，如：蓝鲸、水熊、Galápags 岛的大龟、Isabela岛上的红树林、San Cristóbal岛上的美洲蜥蜴以及中国境内的东北虎、水杉、牦牛、胡杨树、孔雀等，帮助学生进一步了解自然界中生物的多样性，激发学生了解神奇自然，走进自然的兴趣。
评价项目
自我评价
教师评价
能够正确运用过去完成时
□Excellent
□Gd
□In need f
imprvement
□Excellent
□Gd
□In need f
imprvement
能够运用过去完成时介绍一种生物
□Excellent
□Gd
□In need f
imprvement
□Excellent
□Gd
□In need f
imprvement
能够通过听力活动,正确获取主旨大意和详细信息
□Excellent
□Gd
□In need f
imprvement
□Excellent
□Gd
□In need f
imprvement
能够通过听力学习活动,深刻理解“自然界生物的多样性”
□Excellent
□Gd
□In need f
imprvement
□Excellent
□Gd
□In need f
imprvement
能够理解同伴的观点并给予恰当的评论
□Excellent
□Gd
□In need f
imprvement
□Excellent
□Gd
□In need f
imprvement