人教版 (2019)选择性必修 第一册Unit 5 Working the Land优质课课件ppt

这是一份人教版 (2019)选择性必修 第一册Unit 5 Working the Land优质课课件ppt，共43页。PPT课件主要包含了Warming-up，Signposts，Para 1，Para 2，Para 3，Para 4，Para 5，Review，Summary，Homework等内容，欢迎下载使用。
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Using language 2Chemical Versus Organic Farming
Learning Objectives In this class, yu will 1. wrk ut the cntent, structure and language features f the text;2. write yur pinin in an essay abut chemical farming r rganic farming.
What des the picture shw?
Where?What?Why?...
Pre-reading: Predictin
Chemical Versus Organic Farming化学与有机农业的比较
While-reading: Activity 1 Read the text, check yur predictin and answer the questins:What is chemical farming?What is rganic farming?
While-reading: Activity 1 What is chemical farming?Chemical farming is farming using chemical pesticides and artificial fertilizers.
(Para. 1)Chemical pesticides and artificial fertilisers have been in widespread use in farming since the middle f the 20th century...自20世纪中叶以来，化学农药和人工肥料在农业中得到了广泛的应用
(Para.3)Organic farming is simply farming withut using any chemicals. 有机耕作就是不使用任何化学品的简单耕作。
While-reading: Activity 1 What is rganic farming?Organic farming is simply farming withut using any chemicals.
While-reading: Activity 2Read the text, and answer the questins n page 561. Why did many farmers welcme the intrductin f chemical farming?2. What cncerns many peple abut the use f pesticides?3. What is ne prblem with the use f chemical fertilizers?4. Hw is rganic farming different frm chemical farming?5. Why d rganic farmers change the kind f crp grwn in a field every year?6. (1)What is the gal f using rganic farming methds? (2) D yu think it can be reached? Why r why nt?
While-reading: Activity 2Read the text, and answer the questins n page 561. Why did many farmers welcme the intrductin f chemical farming?Many farmers welcmed them as a great way t fight crp disease and increase prductin.
(Para. 1) Chemical pesticides and artificial fertilisers have been in widespread use in farming since the middle f the 20th century. When they were first intrduced, many farmers welcmed them as a great way t fight crp disease and increase prductin...自20世纪中叶以来，化学农药和人工肥料在农业中得到了广泛的应用。刚开始使用的时候，很多农民都很欢迎，认为这是防治作物病害和提高产量的好办法
While-reading: Activity 2Read the text, and answer the questins n page 562. What cncerns many peple abut the use f pesticides?Their lng-term use can smetimes harm bth the land and peples’ health.
(Para. 1) Over time, hwever, what sme scientists have fund is that their lng-term use can smetimes harm bth the land and peples’ health.但随着时间的推移，一些科学家发现，长期使用它们有时会损害土地和人们的健康。
While-reading: Activity 2Read the text, and answer the questins n page 563. What is ne prblem with the use f chemical fertilizers?Crps grwn with them usually grw t fast t be rich in nutritin.
(Para. 2)As fr chemical fertilisers, crps grwn with them usually grw t fast t be rich in 至于化肥，使用化肥种植的农作物通常生长过快，营养不丰富
While-reading: Activity 2Read the text, and answer the questins n page 564. Hw is rganic farming different frm chemical farming?Organic farming is simply farming withut using any chemicals. Organic farmers fcus n keeping their sil rich and free f disease thrugh natural means.
(Para. 2) farming is simply farming withut using any chemicals. Organic farmers fcus n keeping their sil rich and free f disease thrugh natural means.有机耕作就是不使用任何化学品的简单耕作。有机农户专注于通过自然手段保持土壤肥沃和没有疾病。
While-reading: Activity 2Read the text, and answer the questins n page 565. Why d rganic farmers change the kind f crp grwn in a field every year?Different crps are grwn is because they put imprtant minerals back int the grund, making it ready again fr the next batch f crps.
(Para. 4) ... Why different crps are grwn is because they put imprtant minerals back int the grund, making it ready again fr the next batch f crps. Organic farmers als plant diverse crps that use different depths f sil t help keep it rich. 为什么要种植不同的农作物，是因为他们把重要的矿物质释放回地里，让它再次为下一批农作物做好准备。有机耕种的农民还种植多样化的作物，利用不同深度的土壤来帮助保持土壤的肥沃。
While-reading: Activity 2Read the text, and answer the questins n page 566. (1)What is the gal f using rganic farming methds?
The gal f using different rganic farming methds is t grw gd fd while aviding damage t the envirnment r t peple's health.
(Para. 4)... The gal f using different rganic farming methds is t grw gd fd while aviding damage t the envirnment r t peple's health. 使用不同的有机耕作方法的目的是种植好的食物，同时避免对环境或人们的健康造成损害。
While-reading: Activity 2Read the text, and answer the questins n page 566. (2) D yu think it can be reached? Why r why nt? Yes, I think this gal can be reached. Farmers wrked fr centuries withut using any kinds f chemicals and withut harming the envirnment, and the fd they prduced was just fine.
While-reading: Activity 3Match the main ideas(A-D) belw with the paragraphs. Then cmplete the sentences in the table. (P56)A. What rganic farming isB. Why man-made chemicals are still used in farmingC. Organic methds fr prducing rich silD. The prblems with chemical farming
While-reading: Activity 3Match the main ideas(A-D) belw with the paragraphs. Then cmplete the sentences in the table.(P56)A. What rganic farming isB. Why man-made chemicals are still used in farmingC. Organic methds fr prducing rich silD. The prblems with chemical farming
D. The prblems with chemical farming
bacteria and insects
prhibited damage they cause
grw t fast
(Para. 2) In fact, sme pesticides like DDT have been prhibited in mst cuntries because f the damage they cause t peple and the envirnment.事实上，一些杀虫剂，如DDT，由于对人和环境的破坏，大多数国家已经禁止使用。
(Para. 2) Fr example, pesticides can damage the land by killing nt nly harmful bacteria and insects, but als helpful nes... As fr chemical fertilisers, crps grwn with them usually grw t fast t be rich in nutritin... and they ften have less flavur as well.
A. What rganic farming is
natural waste frm animals
(Para. 3) As an alternative, sme farmers have switched t rganic farming.Organic farming is simply farming withut using any chemicals... Fr example, many rganic farmers use natural waste frm animals as fertiliser. This makes the sil in their fields richer in minerals. It als keeps the air, sil, water, and crps free f chemicals. 作为一种选择，一些农户已经改用有机耕作例如，许多有机农民使用动物的天然废物作为肥料。这使得他们田地里的土壤含有更丰富的矿物质。它还能使空气、土壤、水和农作物不含化学物质。
C. Organic methds fr prducing rich sil
(Para.4) Organic farmers als use many ther methds t prduce rich sil. They ften change the kind f crp grwn in each field every year. Fr instance... Organic farmers als plant diverse crps that use different depths f sil t help keep it rich. Fr gal f using different rganic farming methds is t grw gd fd while aviding damage t the envirnment r t peple's health. 有机农民还使用许多其他方法来培养肥沃的土壤。他们经常改变每年在每块田里种植的作物种类。例如有机耕种的农民还种植多样化的作物，利用不同深度的土壤来帮助保持土壤的肥沃。例如
change the kind f crp
different depths
demand fr fd arund the wrld
B. Why man-made chemicals are still used in farming
(Para.5)Sme peple wuld prefer t stp the use f man-made chemicals in agriculture entirely. What keeps them frm ding s is the fact that chemical farming serves the high demand fr fd arund the wrld. Organic farming is nwhere near able t meet that need. Therefre, there is still a lng way t find a suitable slutin that puts sufficient fd n the dinner table while keeping peple and the envirnment as healthy as pssible. 有些人希望在农业中完全停止使用人造化学品。阻止他们这样做的原因是，化学农业服务于全世界对食物的高需求。有机农业远远不能满足这种需求。因此，要找到一个合适的解决方案，既能让餐桌上有足够的食物，又能让人们和环境尽可能地保持健康，还有很长的路要走。
While-reading: Activity 4Read the text again and cmplete the table belw with the help f the signpsts in it.
Signpsts(Unit 2)
n the ne the ther hand
nevertheless
Chemical pesticides and artificial fertilisers have been in widespread use in farming since the middle f the 20th century. When they were first intrduced, many farmers welcmed them as a great way t fight crp disease and increase prductin. Over time, hwever, what sme scientists have fund is that their lng-term use can smetimes harm bth the land and peples’ health.
Fr example, pesticides can damage the land by killing nt nly harmful bacteria and insects, but als helpful nes. In additin, these chemicals can stay in the sil and undergrund water surces fr a lng time. This affects the crps grwn n the land and, in turn, the animals and humans wh digest them. Many peple wrry that these chemicals may make them ill and even cause cancer. In fact, sme pesticides like DDT have been prhibited in mst cuntries because f the damage they cause t peple and the envirnment. As fr chemical fertilisers, crps grwn with them usually grw t fast t be rich in nutritin. They may lk beautiful n the utside, but inside there is usually mre water than essential minerals, and they ften have less flavur as well.
fight crp diseases
increase prductin(serve the high demand fr fd arund the wrld)
(Para. 2) Fr example, pesticides can damage the land by killing nt nly harmful bacteria and insects, but als helpful nes... 例如，农药不仅会杀死有害的细菌和昆虫，还会杀死有益的细菌和昆虫，从而破坏土地。
(Para.5) farming serves the high demand fr fd arund the wrld. Organic farming is nwhere near able t meet that need. Therefre 化学农业服务于全世界对食物的高需求。有机农业远远不能满足这种需求。因此...
nt rich in nutritin
switcht rganic farming
(Para.1) Chemical pesticides smetimes harm bth the land and peples’ health.化学农药有时会损害土地和人们的健康
kill helpful bacteria and insects
(Para. 2) chemicals can stay in the sil and undergrund water surces fr a lng time. This affects the crps grwn n the land and, in turn, the animals and humans wh digest them. 这些化学物质会在土壤和地下水源中停留很长时间，这会影响到土地上种植的作物，进而影响到消化这些作物的动物和人类。
smetimes harm bth the land and peples’ health.
stay fr a lng time and affect crps, animals and peple
(Para.2) As fr chemical fertilisers, crps grwn with them usually grw t fast t be rich in nutritin. 使用化肥种植的农作物通常生长过快而营养不丰富。
(Para. 3)As an alternative, sme farmers have switched t rganic farming, and many custmers have turned t rganic fd when they shp at the lcal grcery.作为一种选择，一些农户已经改用有机耕作，许多顾客在当地杂货店购物时也转而选择有机食品。
As an alternative, sme farmers have switched t rganic farming, and many custmers have turned t rganic fd when they shp at the lcal grcery. Organic farming is simply farming withut using any chemicals. Organic farmers fcus n keeping their sil rich and free f disease thrugh natural means. Fr example, many rganic farmers use natural waste frm animals as fertiliser. This makes the sil in their fields richer in minerals. It als keeps the air, sil, water, and crps free f chemicals.
smething ffering the pssibility f different chices
Organic farmers als use many ther methds t prduce rich sil. They ften change the kind f crp grwn in each field every year. Fr instance, they may grw crn r wheat in a field ne year, and then grw beans there the next. Why different crps are grwn is because they put imprtant minerals back int the grund, making it ready again fr the next batchPa f crps. Organic farmers als plant diverse crps that use different depths f sil t help keep it rich. Fr example, peanuts grw n the grund's surface, but many ther vegetables put dwn deep rts. The gal f using different rganic farming methds is t grw gd fd while aviding damage t the envirnment r t peple's health.
Sme peple wuld prefer t stp the use f man-made chemicals in agriculture entirely. What keeps them frm ding s is the fact that chemical farming serves the high demand fr fd arund the wrld. Organic farming is nwhere near able t meet that need. Therefre, there is still a lng way t find a suitable slutin that puts sufficient fd n the dinner table while keeping peple and the envirnment as healthy as pssible.
keep sil rich and free f disease thrugh natural means
(Para.3) Organic farmers fcus n keeping their sil rich and free f disease thrugh natural means. Fr example, many rganic farmers use natural waste frm animals as fertiliser. This makes the sil in their fields richer in minerals. It als keeps the air, sil, water, and crps free f chemicals.
use natural waste frm animals as fertiliser
change the kind f crp grwn in each field every year
(Para.4) Organic farmers als use many ther methds t prduce rich sil. They ften change the kind f crp grwn in each field every year.Fr instance... Organic farmers als plant diverse crps that use different depths f sil t help keep it rich. Fr example...
plant diverse crps that use different depths f sil
(Para.5) Sme peple wuld prefer t stp the use f man-made chemicals in agriculture entirely. What keeps them frm ding s is the fact that chemical farming serves the high demand fr fd arund the wrld. Organic farming is nwhere near able t meet that need. Therefre, there is still a lng way t find a suitable slutin that puts sufficient fd n the dinner table while keeping peple and the envirnment as healthy as pssible. 有些人希望在农业中完全停止使用人造化学品。阻止他们这样做的原因是，化学农业服务于全世界对食物的高需求。有机农业远远不能满足这种需求。因此，要找到一个合适的解决方案，既能让餐桌上有足够的食物，又能让人们和环境尽可能地保持健康，还有很长的路要走。
unable t serve the high demand fr fd arund the wrld
There is still a lng way t find a suitable slutin
Pst-reading: Activity 11. Is the authr f the passage fr r against rganic farming? Hw d yu knw?2. What ther disadvantages f rganic farming can yu think f?
Pst-reading: Activity 11. Is the authr f the passage fr r against rganic farming? Hw d yu knw? Sme peple wuld prefer t stp the use f man-made chemicals in agriculture farming is nwhere near able t meet that need. Therefre, there is still a lng way t find a suitable slutin that puts sufficient fd n the dinner table while keeping peple and the envirnment as healthy as pssible.
Pst-reading: Activity 12. What ther disadvantages f rganic farming can yu think f?higher cst f prducing fdgreater effrt required t farming...
Pst-reading: Activity 2Write an essay shwing whether yu supprt chemical farming r rganic farming. Cmplete the utline first.(P57)
Tpic sentence: In my pinin, ________ farming is preferable t ________ farming because________.
Sharing yur pininsI’d rather... In my eyes... In my a dubt... The advantages are... I have a feeling that ’s a pity that... I’d My impressin is think/guess/believe... Frm my pint f view/pinin/belief is that...
argue, hld, be in favur f, be ppsed t, bject t, I am fully cnvinced that..., What I firmly believed in is that...
(Para. 4)Organic farmers als use many ther methds t prduce rich sil. They ften change the kind f crp grwn in each field every year. Fr instance, they may grw crn r wheat in a field ne year, and then grw beans there the next. Why different crps are grwn is because they put imprtant minerals back int the grund, making it ready again fr the next batch f crps. Organic farmers als plant diverse crps that use different depths f sil t help keep it rich. Fr example, peanuts grw n the grund's surface, but many ther vegetables put dwn deep rts. The gal f using different rganic farming methds is t grw gd fd while aviding damage t the envirnment r t peple's health.
Pst-reading: Activity 2 Write an essay shwing whether yu supprt chemical farming r rganic farming. Cmplete the utline first.(P57)
Pint 1: ____________________________________________________(Detail) ________________________________________
有机农民还使用许多其他方法来培养肥沃的土壤。。他们经常改变每年在每块田里种植的作物种类。有机耕种的农民还种植多样化的作物，利用不同深度的土壤来帮助保持土壤的肥沃
Argument 1 (Tpic sentence)
Supprting Details/evidence
Cnclusin: ___________________________________________________
Rephrase the pinin
t say r write sth using different wrds in rder t make the meaning clearer重申；换个说法说；改变词句（以使意思更清楚）
Bk 3 Unit 4 Space Explratin
Opinin: (Para.1)Hwever thers feel this is a shallw view which fails t realise nw explring space helps us.
Cnclusin: (Para.5)In clsing, explring space prvides the wrld with many different benefits.
Bdyargument/tpic sentenceSupprting details
Use the checklist t review yur draft
D yu d a gd jb f expressing yur pinin?Des each paragraph have ne main idea?Des each paragraph have at least ne detail t supprt its main idea?D yu sequence the pints in a lgical rder?D yu d a gd jb persuading thers t accept yur pinin?
sequence[ˈsiːkwəns]v. 按顺序排列
1. Write an essay shwing whether yu supprt chemical farming r rganic farming accrding t the utline abve.2. Plish yur writing.