Unit 2 Writing 概要写作课件--高中英语人教新课标必修四.pptx

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1、fertilize the soilto increase production of the crops fertilizer fertilizer chemical fertilizers natural fertilizerschemical farming organic farming chemical fertilizers natural fertilizersBetter？Chemical Or Organic Farming?Recently,however,scientist have beenfinding that long-term use of the chemic

2、al fertilizers can cause damage to the land and,even more dangerous,to peoples health.What are some of the problems causedby chemical fertilizers?Find out and underline the topic sentences of each paragraph.Para1.Para2.Step 1 Topic sentencePara 3.Para 4.With these discoveries,some farmers and many c

3、ustomers are beginning to turn to organic farming.Organic farmers also use many other methods to keep the soil fertile.using language1 Over the past half century,_(use)chemical fertilizers _(become)very common in farming.2 Recently,however,scientists _(find)that long-term use of these fertilizers ca

4、n _(对造对造成破坏）成破坏）the land and,even more dangerous to peoples health.3 What are some of the problems _(cause)by chemical fertilizers?usinghas become cause damage to have been findingcaused2.What problems can be caused by using chemical fertilizers?First,they can _ the land by _ the helpful bacteria an

5、d pests.They also _ in the ground,_ in peoples bodies and _ cancer or other illnesses.In addition,it usually grows too fast to be full of _.Paragraph 2damagekillingstaybuild uplead tonutrition1.What is organic farming?2.What are the advantages of organic farming?3.What are the methods to keep the so

6、il fertile?1.Organic farming is farming without using any chemicals.Haha,weve turned to organic farming.Paragraph 3&4 2.What are the advantages of organic farming?The farmers _ keeping their soil rich,_ disease and _ the air,soil,water and crops _ chemicals.Paragraph 3focus onreducingkeepingfree fro

7、m The methods to keep the soil fertile using natural waste from animals as fertilizer.changing the kind of crop in each field.planting crops to use different levels of soil.planting grass between crops to prevent The same goal:_ to grow good food and avoid damaging the environment or peoples health.

8、Paragraph 3&41234para1.A new discovery of scientists.para2.Several problems caused by using chemical fertilizers.para3.The advantages of using organic farming.para4.Some methods to keep the soil fertile.The structure of this passageTopic(present situation)ProblemsAdvantagesMethods(conclusion)The typ

9、e of the article is_exposition（说明文）（说明文）Consolidationover the past half century be common inrecently=in recent dayshave/has been doingcause damage toavoid doing sthbuild uplead to doing sthin additionmore A than Buse.as.make.richer in.every few yearsprefer doing sthprevent/stop.(from).1.在过去的半个世纪里在过去

10、的半个世纪里2在在.有共同之处有共同之处3最近最近4现在完成进行时现在完成进行时（过去发生现在还在进行）（过去发生现在还在进行）5引起危害引起危害.6避免做某事避免做某事7逐步建立，增进逐步建立，增进8导致导致9另外，除此之外，并且另外，除此之外，并且10与其说与其说B 不如说是不如说是A11用用.作为作为.12使使.更加富足更加富足13每几年每几年14宁愿做某事宁愿做某事15阻止某人做某事阻止某人做某事over the past half centuty be common inrecently=in recent dayshave/has been doingcause damage to

11、avoid damaging the environmentfor a long timebuild upover timelead to cancer or other illnessesin additionmore A than Bfocus onkeep.free ofuse.as.make.richer in.every few yearsprefer doing sthprevent/stop.(from).carry away1.在过去的半个世纪里在过去的半个世纪里2在在.有共同之处有共同之处3最近最近4现在完成进行时（过去发生现在还在进行）现在完成进行时（过去发生现在还在进行）

12、5引起危害引起危害.6避免危害环境避免危害环境7很长一段时间很长一段时间8逐步建立，增进逐步建立，增进9随着时间随着时间 10导致癌症或其他的疾病导致癌症或其他的疾病11另外，除此之外，并且另外，除此之外，并且12与其说与其说B 不如说是不如说是A13使聚焦于使聚焦于14使使.免于免于.15用用.作为作为.16使使.更加富足更加富足17每几年每几年18宁愿做某事宁愿做某事19阻止某人做某事阻止某人做某事20带走带走概要写作评分标准第五档（概要写作评分标准第五档（2125points）：）：1.理解理解准确准确，涵盖，涵盖所有要点所有要点 2.准确准确使用相应的使用相应的语法结构和词汇语法结构和

13、词汇 3.完全完全使用使用自己的语言自己的语言。(60-80W)4.有效有效地使用了语句间的地使用了语句间的连接成分连接成分，使概要，使概要结构紧凑结构紧凑contents(内容内容)language skills(语言语言)structure(结构结构)Step 1：Step 2:Step 3:Step 4:找出主题句或关键信息，忽略具体事例找出主题句或关键信息，忽略具体事例How to write a good summary?Conclusion灵活运用语言，关键信息灵活运用语言，关键信息改编改编，使用使用自己语言自己语言添加有效连接成分，使概要结构紧凑添加有效连接成分，使概要结构紧凑读

14、懂文章大意读懂文章大意近义词替换，改变主语，改变句式，近义词替换，改变主语，改变句式，使用简单句型，少使用定语从句，而使用简单句型，少使用定语从句，而用非谓语动词结构做定语用非谓语动词结构做定语Para 1：Recently,however,scientists have been findingthat long-term use of the chemical fertilizers can cause damage to the land and,even moredangerous,to peoples health.主语主语topic sentence概要写作难点概要写作难点 How

15、 to express the key points by using your own words properly?(如何灵活诠释，规避抄袭的嫌疑如何灵活诠释，规避抄袭的嫌疑)谓语谓语近义词替换近义词替换Recently,however,scientists have been findingthat long-term use of the chemical fertilizers can cause damage to the land and,even moredangerous,to peoples health.In recent days,scientists have dis

16、covered that using chemical fertilizers for a long time can cause damage to the land and also peoples health.in recent days discoveredusing for a long timeWhat are some of the problems causedby chemical fertilizers?改变句式改变句式There are some of the problems causedby chemical fertilizers.First,they damag

17、e the land by killing the helpful bacteria and pests as well as the harmful ones.Chemicals also stay in the ground and underground water for a long time.This affects crops and,therefore,animals and humans,since chemicals get inside the crops and cannot just be washed off.These chemicals in the food

18、supply build up in peoples bodies over time.Many of these chemicals can lead to cancer or other illnesses.In addition,fruit,vegetables and other food grown with chemical fertilizers usually grow too fast to be full of much nutrition.They may look beautiful,but inside there is usually more water than

19、 vitamins and minerals.With these discoveries,some farmers and many customers are beginning to turn to organic farming.Organic farming popular is becoming popular with some farmers and many customers.after these discoveries came out 改变主语改变主语Organic farming is simply farming without using any chemica

20、ls.They focus on keeping their soil rich and free of disease.A healthy soil reduces disease and helps crops grow strong and healthy.Organic farmers,therefore,often prefer using natural waste from animals as fertilizer.They feel that this makes the soil in their fields richer in minerals and so more

21、fertile.This also keeps the air,soil,water and crops free from chemicals.u忽略具体事例忽略具体事例 does not use Organic farmers also use many other methods to keep the soil fertile.There are make the land rich/productiveThere are many organic farming methods for making the land healthy and productive.They often

22、 change the kind of crop in each field every few years,for example,growing corn or wheat and then the next year peas or soybeans.Crops such as peas or soybeans put important minerals back into the soil,making it ready for crops such as wheat or corn that need rich and fertile soil.Organic farmers al

23、so plant crops to use different levels of soil,for example,planting peanuts that use the grounds surface followed by vegetables that put down deep roots.Some organic farmers prefer planting grass between crops to prevent wind or water from carrying away the soil,and then leaving it in the ground to

24、become a natural fertilizer for the next years crop.These many different organic farming methods have the same goal:to grow good food and avoid damaging the environment or peoples health.They often change the kind of crop in each field every few years,for example,growing corn or wheat and then the n

25、ext year peas or soybeans.Crops such as peas or soybeans put important minerals back into the soil,making it ready for crops such as wheat or corn that need rich and fertile soil.Organic farmers also plant crops to use different levels of soil,for example,planting peanuts that use the grounds surfac

26、e followed by vegetables that put down deep roots.Some organic farmers prefer planting grass between crops to prevent wind or water from carrying away the soil,and then leaving it in the ground to become a natural fertilizer for the next years crop.These many different organic farming methods have t

27、he same goal:to grow good food and avoid damaging the environment or peoples health.In recent days,scientists have discovered that using chemical fertilizers for a long time can cause damage to the land and also peoples health.There are several problems caused by chemical fertilizers.They damage the

28、 land,stay in the water for a long time and get into peoples bodies through their food.Summary Organic farming is becoming more popular with some farmers and many customers.It does not use any chemicals.There are many organic farming methods for making the land healthy and productive.All of these methods try to produce good food and to keep the environment and peoples health.