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1、学术英语 社科,Academic English for Social Sciences,1,2,Unit 1 Decision-Making Behaviors in Economic Activities,Lead-inText A Text BListening SpeakingWriting,Unit Contents,3,Lead-in Reading critically:questions for discussion,Unit 1 Decision-Making Behaviors in Economic Activities,4,Lead-in,Reading critica
2、lly:questions for discussion,Reading critically:,Every text is written on a purpose,some are supposed to make you believe.It is important to learn to read critically to get the point.One way of training critical reading is to ask yourself the following questions:,Do you agree with the author?,Unit 1
3、 Decision-Making Behaviors in Economic Activities,What is the author assuming I will agree with?,What is the author trying to prove?,5,Lead-in,Reading critically:questions for discussion,Does the author adequately defend their argument?,What kind of proof do they use?,Unit 1 Decision-Making Behavior
4、s in Economic Activities,Is there something they leave out that you would put in?,Does putting it in hurt their argument?,6,Lead-in,Reading critically:questions for discussion,Discuss the following questions:,How do you make the decision that you take this course?,What do you consider when you make
5、this decision?,Unit 1 Decision-Making Behaviors in Economic Activities,7,Text A,Key terms Critical reading and thinking Difficult sentences English language for academic purpose,Specialized vocabulary Collocations Formal and informal English Signpost language,Unit 1 Decision-Making Behaviors in Econ
6、omic Activities,8,Text A,Key terms,rational people:理性人 Those people who systematically and purposefully do the best they can to achieve their objectives,given the available opportunities.,Unit 1 Decision-Making Behaviors in Economic Activities,marginal change:边际变化 small incremental adjustments to a
7、plan of action,marginal benefit:边际效益 the additional benefit from an increase in an activity,9,Text A,Key terms,Unit 1 Decision-Making Behaviors in Economic Activities,marginal cost:边际成本 the additional cost from an increase in an activity,marginal decision-making:边际决策 the additional cost from an incr
8、ease in an activity,incentive:激励 something that induces a person to act,10,How People Make Decisions,Economists explanation about decision making:There are rules behind peoples decision-making behaviors.,Text A,Critical reading and thinking,Unit 1 Decision-Making Behaviors in Economic Activities,11,
9、Rational people think at the margin.,Text A,Critical reading and thinking,Unit 1 Decision-Making Behaviors in Economic Activities,Example 1:standby ticketsWhat a rational airline can do?Situation:Flying a 200-seat plane across the U.S.costs the airline$100,000.Cost of each seat:$500(Thats to say,nev
10、er sell a ticket for less than$500.)Suppose:A plane is about to take off with 10 empty seats.A standby passenger will pay$300 for a seat.Question:should the airline sell the ticket?,12,Answer:Yes.Reason:If the plane has empty seat,the cost of adding one more passenger is tiny.Here the marginal cost
11、is merely the cost of something to eat,like peanuts,coco,etc.Conclusion:As long as the standby passenger pays more than the marginal cost,selling the ticket is profitable.,Text A,Critical reading and thinking,Unit 1 Decision-Making Behaviors in Economic Activities,13,Example 2:water vs.diamondWhy is
12、 water so cheap,while diamonds are so expensive?,Unit 1 Decision-Making Behaviors in Economic Activities,Text A,Critical reading and thinking,14,Text A,Critical reading and thinking,Unit 1 Decision-Making Behaviors in Economic Activities,Conclusion:Rational people think at the margin.(They make deci
13、sions by comparing costs and benefits.)Are you a rational person?,15,Example 1:the price of an appleHow people respond to incentives?When the price rises:It provides an incentive for buyers to consume less;It provides an incentive for sellers to produce more.,Text A,Critical reading and thinking,Uni
14、t 1 Decision-Making Behaviors in Economic Activities,Rational people respond to incentives.,16,Example 2:a tax on gasoline How people respond to incentives?Encourage people to drive small,more fuel-efficient cars;carpool take public transportation;live closer to where they work;drive hybrid cars;dri
15、ve electric cars.,Text A,Critical reading and thinking,Unit 1 Decision-Making Behaviors in Economic Activities,17,Example 3:a seat belt law American laws require seat belts as standard equipment on new cars.How a seat belt law alters a drivers cost-benefit calculation(Peltzmans analysis):Seat belts
16、reduce the likelihood of injury or death make accidents less costly drive faster and less carefully a large number of accidents,Text A,Critical reading and thinking,Unit 1 Decision-Making Behaviors in Economic Activities,18,Result:These laws produce both fewer deaths per accident and more accidents.
17、Conclusion 1:The net result is little change in the number of driver deaths and an increase in the number of pedestrian deaths.Conclusion 2:When analyzing any policy,consider both the direct effects and less obvious indirect effects.If the policy changes incentives,it will cause people to alter thei
18、r behavior.,Text A,Critical reading and thinking,Unit 1 Decision-Making Behaviors in Economic Activities,19,Rational people know that when they make a decision,it is often not a yes-or-no choice,but requires deliberate consideration of the pros and cons.,Text A,Difficult sentences,Unit 1 Decision-Ma
19、king Behaviors in Economic Activities,Rational people know that decisions in life are rarely black and white but usually involve shades of gray.(Para.2),20,The most important theory in economic study concerns itself with incentives.Other theories are not as important.“The rest is commentary”is a phr
20、ase used in American English to mean“the rest is trivial or less important”.,Text A,Difficult sentences,Unit 1 Decision-Making Behaviors in Economic Activities,“People respond to incentives.The rest is commentary.”(Para.6),21,At first,this discussion of incentives and seat belts might seem like rand
21、om talk not supported by evidence.,Text A,Difficult sentences,Unit 1 Decision-Making Behaviors in Economic Activities,At first,this discussion of incentives and seat belts might seem like idle speculation.(Para.12),22,Specialized vocabulary,rational people marginal decision-making marginal change ma
22、rginal benefit marginal cost net result,Text A,English language for academic purpose,Unit 1 Decision-Making Behaviors in Economic Activities,23,Collocations,Text A,English language for academic purpose,Unit 1 Decision-Making Behaviors in Economic Activities,achieve the high level of satisfaction max
23、imize profits achieve objectives be black and white roll round blow off fly standby puzzling economic phenomena take an action allocate scarce resources end up with unintended consequences idle speculation,24,Formal and informal English,See Page 9,and do Task 3.,Text A,English language for academic
24、purpose,Unit 1 Decision-Making Behaviors in Economic Activities,25,Signpost language,Show connections between sentences and paragraphs.See Page 9,and do Task 2,Text A,English language for academic purpose,Unit 1 Decision-Making Behaviors in Economic Activities,26,Signpost language,Text A,English lan
25、guage for academic purpose,Unit 1 Decision-Making Behaviors in Economic Activities,Signal important parts of academic writing,such as structure,writers position,arguments,conclusion,Reporting someones view:Some people/researcher(s)maintain(s)/argue(s)/assert(s)/claim(s)/point(s)out,27,Signpost langu
26、age,Disagreeing with someones view:I disagree with that The view is open to doubt/not necessarily true/highly debatable One of the main argument against is that,Text A,English language for academic purpose,Unit 1 Decision-Making Behaviors in Economic Activities,28,Signpost language,Pointing out a ga
27、p in research:However little information These studies have emphasized,as opposed to Although considerable research has focused on,less attention has been given to,Text A,English language for academic purpose,Unit 1 Decision-Making Behaviors in Economic Activities,29,Signpost language,Agreeing with
28、someones view:I agree with when he writes that X is certainly correct in saying that Another point in favour of is A further argument supporting isNB:In the following units of study,more examples will be given.,Text A,English language for academic purpose,Unit 1 Decision-Making Behaviors in Economic
29、 Activities,30,Task 1 The tree diagram below illustrates the main points of the text.Fill in the blanks according to the text.,Text A,Suggested answers,Unit 1 Decision-Making Behaviors in Economic Activities,Decision-making behaviors in economic activities,Thinking at the margincomparing marginal _
30、and marginal _,Responding to _,Example 1standby tickets,Critical reading and thinking,Example 2_ vs._,Example 1the price of an apple,Example 2a tax on _,Example 3_,cost,benefits,water,diamonds,incentives,gasoline,seat belts law,31,Task 2 Decide whether the following statements are true(T)or false(F)
31、.,Text A,Suggested answers,Unit 1 Decision-Making Behaviors in Economic Activities,Critical reading and thinking,F,_ 1 When rational people make decisions in life,they are very certain of the choice._ 2 At the time of examination,students have to decide how to use all their time studying._ 3 Margina
32、l changes are small gradual changes of the present plan of action._ 4 The example of the standby fly is told to show how cost can be ignored._ 5 Diamonds are more expensive than water because people are more attracted to them.,F,F,F,T,32,Task 2 Decide whether the following statements are true(T)or f
33、alse(F).,Text A,Suggested answers,Unit 1 Decision-Making Behaviors in Economic Activities,Critical reading and thinking,T,_ 6 The quotation of one economist“People respond to incentives.The rest is commentary.”is given to show the importance of incentives._ 7 The example of the apple shows how food
34、prices vary according to market needs._ 8 The gasoline tax has an effect on peoples choice of cars._ 9 When the seat belt is made compulsory,people drive more carefully._ 10 Policymakers need to take into consideration the less obvious indirect effects of a policy.,F,F,F,T,33,Task 1 Specialized voca
35、bulary,Text A,Suggested answers,Unit 1 Decision-Making Behaviors in Economic Activities,Language building-up,Match the words in Column A with those in Column B and then translate the phrases you have got into Chinese.,34,Task 1 Specialized vocabulary,Text A,Suggested answers,Unit 1 Decision-Making B
36、ehaviors in Economic Activities,Language building-up,Match the words in Column A with those in Column B and then translate the phrases you have got into Chinese.,1 _2 _3 _4 _5 _6 _,marginal change,边际变化,scarce resources,稀缺资源,maximize profits,最大化利润,net result,净结果,level of satisfaction,满意度,rational peo
37、ple,理性人,35,Task 1 Specialized vocabulary,Text A,Suggested answers,Unit 1 Decision-Making Behaviors in Economic Activities,Language building-up,Translate the following sentences into English,using some of the phrases above.,1 我们明年的目标是获得利润最大化。_2 时间是一种稀缺资源，因此如果工人失业，他们的时间就浪 费了。_ _,We aim to maximize pro
38、fits over the next year.,Time is a scarce resource,so if workers are unemployed their time is wasted.,36,Task 1 Specialized vocabulary,Text A,Suggested answers,Unit 1 Decision-Making Behaviors in Economic Activities,Language building-up,Translate the following sentences into English,using some of th
39、e phrases above.,3 理性人有非理性的想法吗？_4 满意度调查结果表明游客对某些服务不满意。_ _,Do rational people have irrational thoughts?,Research into satisfaction level has found that tourists are not satisfied with some of the services.,37,Task 2 Signpost language,Text A,Suggested answers,Unit 1 Decision-Making Behaviors in Econom
40、ic Activities,Language building-up,Match the signpost language from Text A with the purpose each of them serves.,1 _ 2 _ 3 _ 4 _ 5 _ 6 _,e,b,d,c,a,e,38,Task 2 Signpost language,Text A,Suggested answers,Unit 1 Decision-Making Behaviors in Economic Activities,Language building-up,Complete the followin
41、g sentences using the signpost language listed above.,1 He is not well-known for his respect for factual accuracy,_,he was lying.2 Offices can easily become more environmentally-friendly by,_,using recycled paper.3 We dont like the situation.But _,we have to deal with this problem.,in other words,fo
42、r example,at the same time,39,Task 2 Signpost language,Text A,Suggested answers,Unit 1 Decision-Making Behaviors in Economic Activities,Language building-up,Complete the following sentences using the signpost language listed above.,4 Their economy has expanded enormously,while ours,_,has declined.5
43、_,in this chapter there is no general formula for the solution to this question.6 The whole team dont want to lose him._,he needs to realize that company regulations must be obeyed.,by contrast,As we will see,In this case,40,Task 3 Formal English,Text A,Suggested answers,Unit 1 Decision-Making Behav
44、iors in Economic Activities,Language building-up,Replace the underlined words in the following sentences with the more formal ones from Text A.,1 As you study economics,you will come across firms that decide how many workers to hire and how much of their product to manufacture and sell to maximize p
45、rofits.Key:_2 The reason is that a persons willingness to pay for any good is based on the marginal benefit that an extra unit of the good would produce.Key:_,encounter,yield,41,Task 3 Formal English,Text A,Suggested answers,Unit 1 Decision-Making Behaviors in Economic Activities,Language building-u
46、p,Replace the underlined words in the following sentences with the more formal ones from Text A.,3 An incentive is something that persuades a person to act,such as the prospect of a punishment or a reward.Key:_4 Many policies change the costs or benefits that people face and,therefore,change their b
47、ehavior.Key:_5 For example,consider public policy about auto safety.Key:_,induces,alter,regarding,42,Task 3 Formal English,Text A,Suggested answers,Unit 1 Decision-Making Behaviors in Economic Activities,Language building-up,Replace the underlined words in the following sentences with the more forma
48、l ones from Text A.,6 The decline in safe driving has a clear,bad impact on pedestrians.Key:_7 At first,this discussion of incentives and seat belts might seem like an idle guess.Key:_8 When a person wears a seat belt,the likelihood of surviving an auto accident rises.Key:_,adverse,speculation,proba
49、bility,43,Task 3 Formal English,Text A,Suggested answers,Unit 1 Decision-Making Behaviors in Economic Activities,Language building-up,Complete the sentences with some of the answers you have got in the above exercise.,1 Stress can have a(n)_ effect on peoples health.2 This doesnt _ the fact that wha
50、t you did was wrong.3 He warned us that we might _ a lot of opposition at the very beginning.4 Some believe that surgery could _ a heart attack.5 He has very little to say _ the new EU regulations.6 Knowing about the past doesnt necessarily _ solutions to current problems.,adverse,alter,encounter,in
