新视野大学英语读写教程（第二版）第三册Unit 2 Section AIron and the Effects of Exercise.ppt

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1、Contents,Lead-in,Pre-reading,Text Study,Summary,Writing,Lead-in,Lead-in,Our todays topic is“Iron and the Effects of Exercise”.Whats your reaction to the topic?Now lets tackle it so as to familiarize ourselves with the background to the birth of the text.Our topic-centered lead-in begins with the que

2、stion as follows:,Mode I,Mode II,Mode III,Mode IV,随 笔,Tips,Interactive Mode I,Q.1 What are the positive effects of exercise?,Tips,Mode II,Mode III,Mode IV,随 笔,As is often remarked,ones vigor lies in exercise.That reveals the essence of taking exercise.Driven by this belief,therefore,we develop from

3、childhood a habit of taking one or two forms of exercise.Now lets sum up its benefits:,It stimulates the flow of our blood;It builds up the speed with which our brains react to things around;It improves our health conditions;It helps foster our ambition for greater success or better balance of mind;

4、5),Mode I,Tips,Q.2 Whats the relationship between exercise and iron?,Tips,Interactive Mode II,Mode II,Mode III,Mode IV,随 笔,In effect,exercise is already a vital ingredient in our daily life,without which we could not imagine what would become of our health.But from the title of the text,we know exer

5、cise may have something to do with iron.So my second question is as follows:,The more physical exercise we take,the more iron there will be in our blood;The more physical exercise we have,the less iron there will be in our blood;The amount of exercise has little bearing on the reserves of iron in ou

6、r blood;,Mode I,Interactive Mode III,Q.3 How does iron leak out of our blood?,Tips,Tips,Mode II,Mode III,Mode IV,随 笔,Now we are caught in a dilemma as to whether to proceed with our favorite exercise as usual or stop running the risk of iron loss in the blood.The key to the problem,from the writers

7、perspective,may be to know how iron goes out of our blood during our exercise,and what kind of person is liable to be its victim.Here is my question:,It leaks through our sweat?It leaks through our digestive system?And its victims include:Those engaged in intense exercise?The women of childbearing a

8、ge?,Mode I,Now that we have some idea about the relationship between exercise and iron loss,and get some sense of who is inclined to be its victim,all we need to do next is to know adequate measures to prevent such a thing from happening to any one of us,so my next question is as follows:,Tips,Q.4 H

9、ow to remedy or prevent iron deficiency?,Take iron-fortified foods,such as?Enjoy diverse meat dishes on a regular basis,including?Eat Vitamin C-rich vegetables,like?4)Take iron supplements?5)Drink tea or coffee over meals?6),Tips,Interactive Mode IV,Mode II,Mode III,Mode IV,随 笔,Mode I,The Birth of t

10、he Text,随 笔,Pre-reading,Background Information,Watch and Discuss,New Words,Background Information,视频讨论,生词学习,随 笔,Purdue University:(A),Background Information,视频讨论,生词学习,随 笔,Purdue University:(B),Background Information,Purdue University:(C),视频讨论,生词学习,随 笔,Pharmaceutical Sciences,Science,Technology,and V

11、eterinary Medicine.Programs of graduate study and research leading to advanced degrees fall under the jurisdiction of the Graduate School.,Background Information,Medicine&Science in Sports&Exercise(A),视频讨论,生词学习,随 笔,Background Information,Medicine&Science in Sports&Exercise(B),视频讨论,生词学习,随 笔,Watch&Dis

12、cuss,Directions:Watch the video and then discuss the topics as follows:,Video watching,2.What principles should new exercisers pay attention to?,1.Do you often go in for physical exercise and whats your art of exercising?,Key,Key,背景知识,生词学习,随 笔,视频文件放在这个白色的框内，不要超出去。也不要遮挡框的白边。,Sport,背景知识,生词学习,随 笔,New W

13、ords,背景知识,视频讨论,随 笔,New Words,背景知识,视频讨论,随 笔,New Words,背景知识,视频讨论,随 笔,New Words,背景知识,视频讨论,随 笔,New Words,背景知识,视频讨论,随 笔,New Words,背景知识,视频讨论,随 笔,Text Study,Topic-centered Analysis of Text,How would you deal with the topic as a writer?,The writer tackles the topic in accord with the pattern of“problem-caus

14、e-effect-suggestion”.The text starts with a newly-found problem with exerciseiron loss;then follow analyses of both causes and consequences of the problem;and it ends up by giving advice on how to remedy the problem.So the text structurally falls into four parts as below:,课文阅读,随 笔,课文缩写,结构分析,Topic-ce

15、ntered Analysis of Text,课文阅读,随 笔,课文缩写,Main Idea?,Devices for developing it(Devices)?,结构分析,Effect,Suggestion,Para.1 Sports medicine experts have observed for years that endurance athletes,particularly females,frequently have iron deficiencies.Now a new study by a team of Purdue University researchers

16、 suggests that even moderate exercise may lead to reduced iron in the blood of women.,Iron and the Effects of Exercise,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,句型,Para.2“We found that women who were normally inactive and then started a program of moderate exercise showed evidence of iron loss,”

17、says Roseanne M.Lyle,associate professor at Purdue.Her study of 62 formerly inactive women who began exercising three times a week for six months was published in the journal Medicine&Science in Sports&Exercise.,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,Para.3“Women who consumed additional meat

18、or took iron supplements were able to bounce back,”she notes.“But the new exercisers who followed their normal diet showed a decrease in iron levels.”,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,Para.4a Iron deficiency is very common among women in general,affecting one in four female teenagers an

19、d one in five women aged 18 to 45,respectively.But the ratio is even greater among active women,affecting up to 80 percent of female endurance athletes.This means,Lyle says,that“too many women ignore the amount of iron they take in”.,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,Para.4b Women of chi

20、ldbearing age are at greatest risk,since their monthly bleeding is a major source of iron loss.Plus,many health-conscious women increase their risk by rejecting red meat,which contains the most easily absorbed form of iron.And because women often restrict their diet in an effort to control weight,th

21、ey may not consume enough iron-rich food,and are liable to experience a deficiency.,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,Para.5“The average woman takes in only two thirds of the recommended daily allowance of iron,”notes another expert.“For a woman who already has a poor iron status,any add

22、itional iron loss from exercise may be enough to tip her over the edge into a more serious deficiency,”notes the expert.,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,句型,Para.6 Exercise can result in iron loss through a variety of mechanisms.Some iron is lost in sweat,and,for unknown reasons,intense

23、 endurance exercise is sometimes associated with bleeding of the digestive system.Athletes in high-impact sports such as running may also lose iron through a phenomenon where small blood vessels in the feet leak blood.,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,Para.7 There are three stages of ir

24、on deficiency.The first and most common is having low iron reserves,a condition that typically has no symptoms.Fatigue and poor performance may begin to appear in the second stage of deficiency,when not enough iron is present to form the molecules of blood protein that transport oxygen to the workin

25、g muscles.In the third and final stage,people often feel weak,tired,and out of breathand exercise performance is severely compromised.,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,Para.8“People think that if theyre not at the third stage,nothing is wrong,but thats not true,”says John L.Beard,who he

26、lped design the Purdue study.“Youre not in stage 3 until your iron reserves go to zero,and if you wait until that point,youre in trouble.”,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,句型,Para.9a However,most people with low iron reserves dont know they have a deficiency,because traditional methods

27、of calculating the amount of iron in blood(by checking levels of the blood protein that transports oxygen)are not sufficient,Beard states.Instead,its important to check levels of a different compound,which indicate the amount of storage of iron in the blood.,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Rea

28、ding,Para.9b While active,childbearing age women are most likely to have low iron stores,he notes,“Men are not safe,especially if they dont eat meat and have a high level of physical activity.”(An estimated 15 percent of male long distance runners have low iron stores.)Beard and other experts say it

29、s advisable for people in these groups to have a yearly blood test to check blood iron reserves.,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,句型,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,Para.10a If iron levels are low,talk with a physician to see if the deficiency should be corrected by modify

30、ing your diet or by taking supplements.In general,its better to undo the problem by adding more iron-rich foods to the diet,because iron supplements can have serious shortcomings.,句型,Para.10b Supplements may produce a feeling of wanting to throw up,and may be poisonous in some cases.The best sources

31、 of iron,and the only sources of the form of iron most readily absorbed by the body,are meat,chicken,and fish.Good sources of other forms of iron include dates,beans,and some leafy green vegetables.,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,Para.11a“Select breads and cereals with the words iron-

32、added on the label,”writes sports diet expert Nancy Clark.“This added iron supplements the small amount that naturally occurs in grains.Eat these foods with plentiful Vitamin C(for example,drink orange juice with cereal or put a tomato on a sandwich)to enhance the amount of iron absorbed.”,课文阅读,随 笔,

33、课文缩写,结构分析,Text Analyzing and Reading,Para.11b Clark also recommends cooking in iron pans,as food can derive iron from the pan during the cooking process.“The iron content of tomato sauce cooked in an iron pot for three hours showed a striking increase,the level going up nearly 30 times,”she writes.A

34、nd people who are likely to have low iron should avoid drinking coffee or tea with meals,she says,since substances in these drinks can interfere with iron being absorbed into the body.,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,句型,Para.12“Active women need to be a lot more careful about their foo

35、d choices,”sums up Purdues Lyle.“If you pay attention to warning signs before iron reserves are gone,you can remedy the deficiency before it really becomes a problem.”,课文阅读,随 笔,课文缩写,结构分析,Text Analyzing and Reading,Abridgement of Text,Now that we have become more familiar with the organization of the

36、 text,as shown in the block diagram,lets see what we can derive from the text to abridge it into a three-paragraph essay,and what knowledge we can apply to more writing practices on the pattern of“problem-cause-effect-suggestion”.,课文阅读,随 笔,课文缩写,结构分析,Abridgement of Text,Iron and the Effects of Exerci

37、se,Para.1 A new medical study suggests that even moderate exercise may lead to reduced iron in the blood of women,i.e.iron deficiency.According to sports medicine experts,women who were normally inactive and then started a program of moderate exercise showed evidence of iron loss.And,if little was d

38、one about it,its status would get worse.,课文阅读,随 笔,课文缩写,结构分析,Abridgement of Text,Para.2 Iron deficiency produces harmful effects on women in general.First,women of child-bearing age are at greatest risk,since their monthly bleeding is a major source of iron loss.Plus,many health-conscious women are a

39、lso subject to the problem by failing to consume enough iron-rich food.For such women as have already had a poor iron status,exercise,though moderate,will be enough to tip them over the edge into a more serious deficiency,as exercise,课文阅读,随 笔,课文缩写,结构分析,Abridgement of Text,results in iron loss throug

40、h ones sweat,digestive system,and small blood vessels in the feet if it is of intense kind.Those who live with the problem tend to feel weak,tired or out of breath.If their iron reserves go to zero,they will be in trouble.Para.3 To avoid the worsening of iron deficiency,experts think it advisable fo

41、r both women and men to have a yearly blood test to check blood iron reserves.And,to remedy iron loss,its better to undo the problem by adding more iron-rich,课文阅读,随 笔,课文缩写,结构分析,Abridgement of Text,foods to the diet,selecting breads and cereals with the“iron-added”labels,cooking in iron pans,and refu

42、sing to drink coffee or tea with meals.And,moreover,it is unwise of one to take iron supplements for they produce a feeling of wanting to throw up.In short,if one pays enough attention to warning signs before iron runs out,there will be sufficient time to put it right.,课文阅读,随 笔,课文缩写,结构分析,Summary,Eng

43、lish Equivalents of Chinese,Creative Application of Typical Expressions,Further Application of Typical Patterns,Summary,句型应用,短语活用,随 笔,Summary,to lead to reduced iron in the blood,one in/out of four female teenagers,to take in protein,to be at greatest risk,to result in iron loss,to interfere with,to

44、 be out of breath,to undo the problem,a feeling of wanting to throw up,to remedy the deficiency,Summary,to bounce back,up to,in an effort to(do sth.),to go to zero,to add to,句型应用,短语互译,随 笔,far from able to do sth./meet the minimum requirements for the curriculum,Far from able to meet the minimum requ

45、irements for the curriculum,she was bounced out of college.,把某人开除学院:吓唬某人做某事:猛冲而去:,bounce sb.out of collegebounce sb.into doing sth.bounce away,她远未达到课程的最低要求，被学院开除了。,知识链接,活 学 活 用,意 群 提 示,Back,Summary,句型应用,短语互译,随 笔,seek how to do sth./be well up in sth./sb.s privacy,In our social life,there is one grou

46、p of people who derive joy from seeking how to be well up in others privacy.,知晓:与某人不相上下:按时完成工作:,to be well up in sth.to be up with sb.to be up on ones work,社会生活中有那么一群人，他们以设法了解他人的隐私为快。,知识链接,活 学 活 用,意 群 提 示,Summary,句型应用,短语互译,随 笔,Back,enrich intimacy with sb./make much effort to do sth./communicate wit

47、h sb.,In order to enrich intimacy with their children,mothers should make much effort to communicate with them a lot.,毫不费力:勇敢地做某事:下功夫做某事:,without effortto do sth.by an effort of willto make effort to do sth.,为增进与孩子的亲密感,母亲们应力争和孩子多沟通。,知识链接,活 学 活 用,意 群 提 示,Summary,句型应用,短语互译,随 笔,Back,disband a football

48、team/show evidence of sth./go to the dogs,Our football team,though not disbanded yet,has shown evidence of going to the dogs.,走极端:情况糟透了:崩溃;垮下来:,to go to extremesto go to the dogsto go to pieces,我们足球队，尽管尚未解散，已表现出无药可救的迹象。,知识链接,活 学 活 用,意 群 提 示,Summary,句型应用,短语互译,随 笔,Back,ones impression about sth./the B

49、eijing Olympic Games/add up to one word,Their impressions about the Beijing Olympic Games could add up to one word“Great”.,算入;包括:加到上;附加;包括:加起来;合计:,to add into add onto add up,他们对北京奥运会的所有感受可以汇成一个字“棒”。,知识链接,活 学 活 用,意 群 提 示,Summary,句型应用,短语互译,随 笔,Back,Summary,A new study/research/opinion poll/survey by

50、sb.suggests/indicates that,Sb.believe/feel that,but that(statement)is not/true/the case.,Sb.who be(not)likely/liable to should,since(从句),短语活用,短语互译,随 笔,ones profession/ones way of seeing things around/exert some effect on sth.,新视野 产生式提炼与应用,典 型 例 句,意 群 提 示,他们做的一项研究表明,人的职业对其看待周围事物的方式会产生影响。,A study by t