Unit5 Reading for writing-ppt课件--（2022）新人教版(2019新版)高中英语选择性必修第一册.pptx

1、高一人教版英语选择性必修一第五单元华南师范大学附属中学 徐水Using language:Reading and writingLearning objectivesIn todays class,you are expected to：1.gain the information of organic farming,and chemical farming.2.analyze and judge the differences between chemical and organic farming.3.describe and state your preferences about c

2、hemical or organic farming.Step 1:Reading for meaningRead the text and answer the questions.1.Why did many farmers welcome the introduction of chemical farming?2.What concerns many people about the use of pesticides?3.What is one problem with the use of chemical fertilisers?4.How is organic farming

3、different from chemical farming?5.Why do organic farmers change the kind of crop grown in a field every year?6.What is the goal of using organic farming methods?Do you think it can be reached?Why or why not?Step 1:Reading for meaningRead the text and answer the questions.1.Why did many farmers welco

4、me the introduction of chemical farming?Many farmers welcomed them as a great way to fight crop diseases and increase production.2.What concerns many people about the use of pesticides?Their long-term use can sometimes harm both the land and peoples health.Step 1:Reading for meaningRead the text and

5、 answer the questions.3.What is one problem with the use of chemical fertilisers?Crops grown with them usually grow too fast to be rich in nutrition.4.How is organic farming different from chemical farming?Organic farming is simply farming without using any chemicals.Organic farmers focus on keeping

6、 their soil rich and free of disease through natural means.Step 1:Reading for meaningRead the text and answer the questions.5.Why do organic farmers change the kind of crop grown in a field every year?Different crops are grown because they put important minerals back into the ground,making it ready

7、for the next batch of crops.Step 1:Reading for meaningRead the text and answer the questions.6.What is the goal of using organic farming methods?Do you think it can be reached?Why or why not?The goal of using organic farming methods is to grow good food while avoiding damage to the environment or to

8、 peoples health.Yes,I think this goal can be reached.Farmers worked for centuries without using any kinds of chemicals and without harming the environment,and the food they produced was just fine.Step 2:Reading for main ideasMatch the main ideas(A-D)below with the paragraphs.Paragraph1-2345A.What or

9、ganic farming isB.Why man-made chemicals are still used in farmingC.Organic methods for producing rich soilD.The problems with chemical farmingStep 3:Reading for detailsComplete the sentences in the table.Paragraph1-2345Pesticides can kill helpful _.Some pesticides have been _ because of the _.Crops

10、 grown with chemical fertilisers usually _ to be full of_.Many organic farmers use _ as fertiliser.They often _ grown in each field _.They also plant crops that use _ of the soil to help keep it rich.Organic farming is nowhere near able to meet the high _.bacteria and insectsprohibiteddamage they ca

11、usegrow too fastnutritionnatural waste from animalschange the kind of cropevery yeardifferent depthsdemand forfood around the world What words and expression in Paragraph 2 show the transitions between ideas?10Step 4:Reading for language What words and expression in Paragraph 2 show the transitions

12、between ideas?11Step 4:Reading for language What is the goal of using organic farming methods?Do you think it can be reached?Why or why not?12The goal of using organic farming methods is to grow good food while avoiding damage to the environment or to peoples health.Step 5:Post-readingWrite an argum

13、entative essay giving your opinion on chemical/organic farming1314How might the following items be problems and how important are they for organic farming?Disadvantages?Advantage?Step 6:Pre-writing15What is the reality of organic farming?Step 6:Pre-writing Organic Farming16 Chemical FarmingProsCons

14、Impact on food chain?Pollution?Process of farming(growth of weeds;fertilizers;pests;irrigation灌溉;)?Impact on the Ecosystem?Effect on soil fertility?Productivity?Step 6:Pre-writngCompare organic and chemical farming.Writing task:Support organic farming/chemical farming?17Step 7:WritingPossible versio

15、nIn my opinion,organic farming is preferable to chemical farming because of the benefits to the environment and to people,and because organic food is more nutritious.To begin with,chemical farming harms the environment.Since chemical pesticides are not found in nature,normal natural processes cannot

16、 get rid of them.Instead,the chemicals tend to accumulate in the soil and water,and are absorbed in the food chain,where they poison wildlife and domestic animals.18Possible versionThis affects us directly,because we end up eating plants,dairy products,eggs,and meat that have high levels of pesticid

17、es.Think about it:The purpose of the pesticides is to kill“pests”,that is,to kill insects.Something that can kill an insect probably is not healthy for a person to eat.While it may be true that the food we eat does not have enough pesticides in it to kill us immediately,over the years this pesticide

18、 may cause us health problems or give us diseases such as cancer.19Finally,organic food is generally more nutritious than food grown with man-made chemicals.If you remember a few years ago,there was the case of watermelons literally exploding in the fields because they had been given chemicals to ma

19、ke them grow faster.The reason why they exploded was that they contained too much water,because the farmers had used too many chemicals and the weather was unusually wet.As it turns out,such chemicals are commonly used in farming to grow larger crops more quickly.Do you really want to eat watered-do

20、wn fruit and vegetables which have been rushed to market?They cannot possibly taste as good as organic vegetables,nor can they be as nutritious.In closing,I would like to suggest buying organic food.Yes,the price is a little higher?But the small price we pay extra will bring us huge rewards in the e

21、nd.20HomeworkShare your compositions with your partners and help revise theirs.THANK YOU高一人教版英语选择性必修一第五单元答疑课Using language:Reading and writing华南师范大学附属中学 徐水Earth UniversityEarth University is a special university in Costa Rica,where students learn sustainable farming methods that can protect the envi

22、ronment.Before you watchComplete th epassage with the words in the box.agriculturalecologymethodsprofitscholarshipssustainabletypicaluniqueEarth University is located in Guacimo,Costa Rica.It is not a(n)_ university.What is _ about it is that students study both in classrooms and in the fields.That

23、is because Earth University is a(n)_ school where students learn about farming.The kind of farming taught here is called _ farming.The farming _ they learn have little or no negative impact on the environment.In class,they also learn about _,which is the study of how to protect the natural balance o

24、f the environment.The students grow bananas on the farm for _.The money they get from these bananas goes towards _ for students from poor areas.typicaltypicaluniqueagriculturalsustainablemethodsecologyprofitscholarshipsWhile you watch:Circle the best answers.1 Which is not a goal of Earth University

25、?A To teach poor students.B To teach students how to make food with bananas.C To give students skills to protect the environment.2 Most of the students are from _.A AfricaB Latin AmericaC Costa Rica3 Students have to work six days a week for _.A half of the yearB most of the yearC the entire year4 Earth University students also learn about _.A chemical farmingB leadershipC economicsAfter you watch:Discuss these questions in groups.1 What do you like about Earth University?2 Would you like to study at Earth University?Why or why not?THANK YOU