写作篇Chapter Two Means of Paragragh Development.ppt

Part One Paragraph Writing,Chapter Two Means of Paragraph Development,II.Development by Examples,I.Logical Order of Paragraph,III.Development by Time Order,V.Development By Spatial Order,IV.Development by Process,.Development by Cause and Effect,VIII.Comparison/Contrast,IX.Development by Combination of Methods,VII.Development by Classification,1.Logical Order of a Paragraph,A fourth way to achieve coherence is to arrange your sentences in some kind of logical order.Your choice of one kind of logical order over another will,of course,depend on your topic and on your purpose.You may even combine two or more different logical orders in the same paragraph.The important point to remember is to arrange your ideas in some kind of order that is logical to a reader accustomed to the English way of writing.,Pretest Read the two groups of sentences below.Then rearrange them in logical order.Use the transition words and phrases and other clues to help you.Finally,rewrite the sentences as a paragraph.Group 1:F，G，B，A，D，C，EGroup 2:D，E，A，C，F，B,2.Logical Developments Some common kinds of logical order in English are chronological order development by time or process;analysis-logical division of ideas;comparison or contrast;cause and effect,etc.Each kind of order has its own special words and phrases to show the relationships among the ideas.For example,first,next,after that,finally,before the last war,after 1990,since then,in 2010,while working on the project,etc.,the most noticeable difference,larger than,unlike,on the other hand,in contrast,differ from,etc.,similarity,similarly,as expensive as,just as,just like,compare with,in comparison,etc.,analysis Ideas are put into groups,and each group is discussed one after the other.,first,second,third,etc.,Paragraph 2Kinds of logical order:Chronological orderTransitional signals:and so,Then in 46 B.C.E.,and,not onlybut also,but,so in 1582,but,EXERCISES,Read the following paragraphs and decide which kind of logical order is used in each one.Give the reasons for your choice.Circle all transition signals.,Paragraph 1 Kinds of logical order:ContrastTransitional signals:for example,Furthermore,on the other hand,and,in contrast,but,In addition,whereas,however,Examples and extended examples,which are anecdotes or short stories,are perhaps the easiest king of supporting details to use.You dont have to search in the library for information;you can often take examples from your own knowledge and personal experiences.Furthermore,examples are usually interesting and make your writing enjoyable to read.Finally,since it is easy to remember a striking example or a good story,your reader is more likely to remember your point.,II.Development by Examples,1.Pretest Read the paragraph on page 32 and page 33 and answer the questions.,2.Examples There are two cautions you should keep in mind:First,use personal examples sparingly in formal academic writing because they are considered weak support.Second,be sure that your examples really prove your point.,II.Development by Examples,Study the following model to see how examples and extended examples can be used to support a topic sentence.Knowledge often results only after persistent investigation.Albert Einstein,after a lengthy examination of the characteristics of matter and energy,formulated his famous Theory of Relativity,which,now acts as a basis for further research in nuclear physics.Using plaster casts of footprints,fingerprints,and stray strands of hair,a detective pertinaciously pursues the criminal.After years of work Annie Jump Cannon perfected the classification of the spectra of some 350,000 stars.Investigations into the causes of polio have provided us with the means for prevention and cure of this dreaded disease only after many years of research.As students,we too are determined in our investigation to find,retain,and contribute to the store of human knowledge.,II.Development by Examples,3.Extended ExamplesSometimes,it is not enough to support your point simply with general examples.A more vivid and concrete illustration used as an extended example may light up an abstract idea and make it clear,interesting,memorable and convincing.Study the following model to see how extended examples can be used to support a topic sentence.,II.Development by Examples,II.Development by Examples,Nonverbal Communication Nonverbal communication,or“body language”,is communication by facial expression,head or eye movements,hand signals,and body postures.It can be just as important to understanding as words are.Misunderstandingsoften amusing but sometimes serious can arise between people from different cultures if they misinterpret nonverbal signals.Take,for example,the difference in meanings of a gesture very common in the United States.A circle made with thumb and index finger.To an American,it mans that every thing is OK.,II.Development by Examples,To a Japanese,it means that you are talking about money.In France,it means that something is worthless,and in Greece,it is an obscene gesture.Therefore,an American could unknowingly offended a Greek by using that particular hand signals.,That following incident illustrates how conflicting nonverbal signal can cause serious misunderstandings.While lecturing to his poetry class at Ain Shams University in Cairo,a British professor became so relaxed that he leaned back in his chair and reveal his bottom of his foot to the astonished class.Making such a gesture in Muslim society is the worst kind of insult.The next day,the Cairo newspapers carried headlines about the student demonstration that resulted,and they denounced British arrogance and demanded that the professor be sent home.,II.Development by Examples,4.Transitional Signals for Examples In developing a paragraph by examples,be careful to introduce examples with appropriate transitional signals.The following give commonly used transitions and their examples.Sentence Connectorsfor examplefor instanceOthersThe following example(story/incident)illustrates(shows/demonstrates).such asas in the case ofa good case in point,II.Development by Examples,III.Development by Time Order,1.PretestRead the sentences below.Then rearrange them in logical order.Use the transitional words and phrases and other clues to help you.Finally,rewrite the sentences as a paragraph and tell on what principle you arrange the sentences.C，A，F，B，E，D，G,III.Development by Time Order,2.Chronological OrderChronological order is one of the easiest methods of organization to master.Chronos is a Greek word meaning time.Chronological order,therefore,is a way of organizing the ideas in paragraph in the order of their occurrence in time.Chronological order is used for something as simple as a recipe and for something as complex as a history book.In academic writing,chronological order has many uses.One of primary ways you might use it is to write a historical narrative about the subject of term paper.,III.Development by Time Order,There are two keys to writing a good chronological paragraph:1.Discuss the events in the order in which they occur.2.Use chronological transition signals to indicate the sequence of events.Analyze the following model paragraph for its organization by time.Underline any words or expressions that indicated time order,III.Development by Time Order,The Evolution of Computers In the relatively short span of sixty years,there has been an incredible evolution in the size and capabilities of computers.Today,computer chips smaller than the tip of your fingernail have the same capabilities as the room-sized machines of years ago.The first computers were developed around 1945.They were so large that they required special air-conditioned rooms.About 20 years later,in the 1960s,desk-sized computers were developed.This represented a gigantic advance.Before the end of that same decade,however,a third generation of computers,which used simple integrated circuits and which were,III.Development by Time Order,even smaller and faster,had appeared.In 1971,the first micro-processor,less than one square centimeter in size,was developed.Today,modern microprocessors contain as many as 10 million transistors,and the number of transistors and the computational speed of microprocessors doubles every eighteen months.,3.Topic Sentences for chronological Order,The topic sentence of a chronological paragraph in some way indicates the time order.In the model,phrases such as:in the relatively short span of sixty years and evolution give the reader a hint that this is a chronological paragraph.,III.Development by Time Order,4.Transition Signals for Chronological Order,Transition signals are especially important in a chronological paragraph.You have to be very clear about the sequence of events:Did one event happen before,at the same time as,or after another event?,III.Development by Time Order,Transition Words and Phrases,first,first of all,soon second,after that,graduallynext,finally,meanwhilenow last,Subordinators,after sinceas until as soon as whenbefore while,III.Development by Time Order,III.Development by Time Order,Others,In the morningLast weekon the third dayduring the night Keep in mind that any time expression can serve as a chronological transition signal.,III.Development by Time Order,EXERCISES1.Put a check in the space to the left of every topic sentence suggesting that a paragraph will be developed by time and underline the word or words that indicate chronological order.(1)A persons intelligence is the product of both heredity and environment.(2)The tensions that led to last years student riots had been building for several years.(3)The life cycle of the Pacific salmon is a fascinating phenomenon.,III.Development by Time Order,(6)The worst day in my life was the day I left my family and my friends to come to the United States.(7)American directness often conflicts with Asian modesty.(8)The two most publicized holidays in the United States are first,Christmas and second,Thanksgiving.(9)The traditions of Christmas originated in several different countries.(10)Every year,our family celebrates the Muslim holiday Ramadan in the same way.,III.Development by Time Order,2.Fill in the blanks with appropriate chronological transition signals listed below.(1)From(2)until(3)When(4)500years later(5)By the time(6)in 1776(7)By midway through this century(8)from the beginning(9)to 1945(10)Now,IV.Development by Process,Chronological order is not just used for historical narratives;it is also used in business,science,and engineering to explain processes and procedures.For example,chronological order would be used to explain how to take a photograph,how to perform a chemistry experiment,or how to set up an accounting system.Such paragraphs are called“how to”or“process”paragraphs.,IV.Development by Process,There are two keys to developing a paragraph by process:1.Discuss the steps in a process in the order in which they occur.2.Use chronological transition signals to indicate the sequence of steps.Analyze the following model paragraph for its organization by time.Underline any words or expressions that indicated time order,IV.Development by Process,Cloning Technology,The cloning of Dolly involved several steps.First,cells that had previously been taken from Dollys mother were starved for five days,which caused them to stop dividing.This interruption of the cells division cycle made it easier for them to reprogram themselves to start growing a new organism.After five days,the nuclei of these cells were removed and transferred into an unfertilized sheep egg,from which the natural nucleus had previously been removed.In the next step,the egg was grown in the laboratory for a period of time.Then the egg was implanted into a different sheep,where it grew normally.When the sheep finally gave birth,the,lamb was an exact genetic copy,or clone,of the sheep that had provided the transferred nucleus,not of the sheep that had provided the egg.,IV.Development by Process,IV.Development by Process,Transitional signals are especially important in a paragraph developed by process.They clearly indicate the sequence of the process step by step.The commonly used transitional signals are as follows.first,second,third,next;before,after;last,finally;not.until;the first step,the second step;meanwhile;as soon as,when;after that;now,thenIn giving instructions,imperative sentences and sentences with the indefinite pronoun you as the subject are often used.The present tense should be used if the instructions are still applicable.,IV.Development by Process,Mouth-to-mouth Breathing Once you encounter a person who has stopped breathing,you should begin immediately to do mouth-to-mouth breathing.First,place the victim on his back and remove any foreign matter from his mouth with your fingers.Then tilt his head backwards,so that his chin is pointing up.Next,pull his mouth open and his jaw forward,pinch his nostrils shut to prevent the air which you blow into his mouth from escaping through his nose.Then place your mouth tightly over the victims.Blow into his mouth until you see his chest rise.Then turn your head to the side and listen for the onrush of air which indicates an air exchange.Repeat the process.,EXERCISES1.Add appropriate chronological transitional signals to the following essay and punctuate them.How to Reduce the Danger of SmokingThe Department of Health,Education and Welfare(HEW)has outlined some steps to take some of the danger out of smoking for those people who are unable to quit smoking outright.First,choose a cigarette with less tar Second,dont smoke your cigarette all the way down Third,take fewer draws on each cigarette,that is,Fourth,reduce your inhaling Finally,smoke fewer cigarettes each day,IV.Development by Process,But think about the terrible diseases you are openingyou In short,if you follow each of these steps without cheating,you should be able to at least control the number of cigarettes you smoke daily.,IV.Development by Process,V.Development By Spatial Order,When you need to describe something,a number of features should be mentioned:shape,size,color,location of parts and condition.You have to decide on the order in which to name the different parts or details.For this you should find out the space relationship between them and arrange your description accordingly from one point to another,such as from left to right(or right to left),from east to west(or west to east),top to bottom(or bottom to top),or inside to outside(or outside to inside).Read the following examples,pay attention to the arrangements of the description and circle the words and phrases indicating position.,V.Development By Spatial Order,Example 1 Mr.Cook,a renowned American historian,arranges the books on his bookshelves in a unique way.In the upper right hand corner,there are books about the development of the early colonies in New England and the War of Independence.Right under them can be found books on the slave trade,the plantation system and the