新核心大学英语B版听说教程1unit5.ppt

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1、Unit 5 Viewpoints on Science,In this unit you will:1.learn about the scientific method,viewpoints on science,and scientific discoveries from reports,speeches and lectures given by professors;2.familiarize yourself with the words and expressions related to the theme of the unit;3.learn to use these w

2、ords and expressions;4.learn how to speak English with correct intonation and listen for numbers in spoken discourse;5.practice listening with other non-theme-related audio and video materials;6.use the proper expressions and sentence structures to apply for a visa.,Learning objectives,Part I Theme-

3、Related Activities,Part II Listening and Speaking Strategies,Part III Extensive Listening,Part IV Communication Skills,Part V Assessment Log,Part I Theme-Related Activities,Section I Report About Scientific Discoveries(Part I),Section II Report About Scientific Discoveries(Part II),Section III Inter

4、view,1.How do you feel about new scientific discoveries?2.What do you aspire to invent or discover if you were a scientist now?,Lead-in questions:,Unit 5 Part I Section I Lead-in questions,Word Bank,Unit 5 Part I Section I Word Bank,Notes,Unit 5 Part I Section I Notes,Task 1 Watch the video clip and

5、 then decide whether the following statements are true or false.,Task,Unit 5 Part I Section I Task 1,1.The ancient Greeks were acclaimed as great thinkers and observers because they tested their ideas in a systematic and scientific way.2.The scientific method is widely used in daily life,from troubl

6、eshooting car problems to major scientific discoveries.,(They did not believe in testing their ideas in an orderly,unbiased way.,F,_,T,_,3.French scientist Louis Pasteur was the first one to apply the scientific method.4.There was a controversy over where microbes come from.5.Pasteur conducted an ex

7、periment to prove that microbes are created by a special life force in the air.,(But the video only claims that he conducted an experiment with all the features of scientific method.),(He rejected this theory and the purpose of his experiment was done to disprove this idea.),T,_,F,_,F,_,Unit 5 Part

8、I Section I Task 1,Pasteur believed that.2.He hypothesized that.3.He placed the broth in and heated it to.,Task 2 Watch the video clip for a second time and then complete the following sentences.,microbes could be carried by,but not created by the air,_ _,Task,Unit 5 Part I Section I Task 2,a flask

9、of broth would stay sterile as long as no airborne microbes could get in and use the nutrients in the broth to multiply,_ _,force out all the air,_,a special swan neck flask,_,4.He observed the cooled broth and found that when he broke off the neck of the flask.5.Pasteur concluded that.,Unit 5 Part

10、I Section I Task 2,airborne obes could get in and the broth became cloudy as they multiplied,_,his experiment proved his hypothesis/he should accept his hypothesis rather than rejecting or modifying it,_,Task 3 Watch the video clip again and then work in pairs to describe the experiment Pasteur perf

11、ormed,based on the video clip and the following pictures.Afterwards,each group will give a brief report to the class.,Task,Unit 5 Part I Section I Task 3,【Script】,Script,Unit 5 Part I Section I Script,Word Bank,Unit 5 Part I Section II Word Bank,Notes,Unit 5 Part I Section II Notes,1.A hypothesis is

12、 _.A.an educated guess or prediction B.a discussion after data is collected C.a conclusion drawn after observations and experiments D.a scientific method used to prove or disprove ones belief2.The experiment is intended to test the hypothesis,“_”A.do plants need light to grow?B.plants need light to

13、grow.C.the plants without light dont look healthy.D.without light,the plants will eventually die.,Task 1 Watch the video clip and choose the best answers to the following questions.,Task,Unit 5 Part I Section II Task 1,3.The way to test the accuracy of an experiments results is to_.A.repeat the expe

14、riment B.find a basic experimental model C.keep trying different approaches and collecting data D.change the variables and repeat the experiment4.Which of the following is NOT mentioned as the variables that affect the growth of plants?A.The presence or absence of light.B.The temperature of the air.

15、C.The type of soil.D.The quality of seed.,Unit 5 Part I Section II Task 1,5.If the data partly support the hypothesis,researchers should_.A.extend the experimental time B.have a basic experimental model C.change the hypothesis and redo the experiment D.give up the old hypothesis and come up with a b

16、rand new one,Unit 5 Part I Section II Task 1,Task 2 Watch the video clip and rearrange the sentences in the order that you hear them.Briefly describe each picture to illustrate how the scientific method is applied.,Task,Unit 5 Part I Section II Task 2,a,b,c,d,e,f,Unit 5 Part I Section II Task 2,d Fi

17、rst we made some observations and found more plants seem to grow in areas that receive light than in dark places.,c We formulated a hypothesis that plants need light to grow.,e To test our hypothesis,we designed an experiment to make sure that the plants in two sides of the box grow in the same envi

18、ronment but get different light exposure.,f We observed the growth of the plants and collected data we need.,b We found that the side that received light is more dense with green leaves while the side with little light grew straight with yellow-brown leaves.,a We drew a conclusion that the experimen

19、t partly supported our hypothesis,and we need to modify our hypothesis and experiment again.,1._ _,2._,3._ _ _,4._ _,5._ _ _,6._ _ _,Task 3 Apply the scientific method,as learned from the video clip,to an experiment that you would like to perform.After the experiment,explain the whole process to you

20、r partner.Pay attention to the sequence of the experiment.,Task,Unit 5 Part I Section II Task 3,【Script】,Example:You may conduct an experiment to prove Archimedes law or Galileos law of free-fall.,Script,Unit 5 Part I Section II Script,Word Bank,Unit 5 Part I Section III Word Bank,Note,Unit 5 Part I

21、 Section III Notes,Before Microsoft came along,there really was no software e along:to appear or arriveFor example:A bus should come along any minute now.I will take whatever comes along.I gave up scuba diving when my first child came along.,Task 1 Listen to the audio clip and choose the best answer

22、s to the questions below.,Task,Unit 5 Part I Section III Task 1,1.Microsoft was founded when the competition among software companies was intense.2.Microsofts main competitors are not software but hardware companies.,(There really was no software industry before Microsoft.),F,_,T,_,3.Books and the P

23、C were hugely popular when they first appeared because of their positive effects.4.The PC business is a fun business mainly because it is the most profitable.5.Bill Gates is very confident about the future of digital devices.,(When they came along,it is hard for people to accept them because they kn

24、ew little about their positive effects.),(It is a fun business because companies can develop new versions of software based on customer feedback.),F,_,T,_,F,_,Unit 5 Part I Section III Task 1,Task 2 Directions:Listen to the audio clip again and work out an interview in question-and-answer form.Pract

25、ice with your partner.,Task,Unit 5 Part I Section III Task 2,For reference:,【Script】,Script,Unit 5 Part I Section III Script,Part II Listening and Speaking Strategies,Section I Pronunciation SkillIntonation,Section II Listening SkillListen for Numbers,Intonation is crucial for communication.Intonati

26、on is about how one says things,rather than what he says.Without intonation,it is impossible to understand the expressions and thoughts that go with words.Awareness of intonation aids communication.Incorrect intonation can result in misunderstandings,speakers losing interest or even taking offence!G

27、eneral rules Statements usually have a falling tone at the end.The six question words(who?what?when?where?why?how?)also have a falling tone at the end.Yes/No questions(questions one can answer with“yes”or“no”)usually have a rising tone.,Pronunciation SkillIntonation,Unit 5 Part II Section I,Unit 5 P

28、art II Section I,For example:1.How did you spend your vacation?(falling tone)2.I went to Venice with my fianc last summer.(falling tone)3.Was it your own choice?(rising tone)Yes,indeed.(falling tone)4.Are you going to the seashore this spring?(rising tone),Task 1 Read the following sentences with th

29、e correct intonation.,Task,Unit 5 Part II Section I Task 1,1.That is the person who robbed the bank!(falling tone)2.Do you mean the man with the black pants?(rising tone)3.No.The woman with the plastic bag.(falling tone)4.Are you saying that we are going to cancel this project?(rising tone)5.There a

30、re not many visitors this time of year.(falling tone)6.Everyone is going swimming.Dont you want to come along?(rising tone),Unit 5 Part II Section I Task 1,7.Do you mean the largest state in area or in population?(rising tone)8.He looks happy,does he not?(falling tone)9.How awful it is!(falling tone

31、)10.Mother has gone to town.(falling tone),Task 2 Listen to the following tongue-twisters and then repeat.,Task,1.Sixty-six sick chicks2.The sixth sick sheiks sixth sheeps sick.3.She sells seashells by the seashore.4.Do you agree,if you are free,to come to tea with me by the sea?5.Its Billys kitten

32、sitting in the kitchen.6.Tims as thin as a pin,but it isnt a sin to be thin.7.Will you sit still,Bill?Ill sit as still as a hill.8.An English fisherman wishes to get a foolish fish for a cold dish.9.Ann sent Andy ten hens and Andy sent Ann ten pens.10.Spring is showery,flowery,bowery.Summer is hoppy

33、,croppy,poppy.Autumn is wheezy,sneezy,freezy.Winter is slippy,drippy,nippy.,Unit 5 Part II Section I Task 2,Numbers are important in daily life.When going shopping,one needs to calculate prices.In a restaurant one needs to calculate and pay the bill after eating.When booking a concert or a flight,or

34、 making an appointment or a date,time is a big issue.In the bank one calculates interest rates and the balance after withdrawing or depositing money.A good sense of numbers is therefore indispensable to smooth everyday communications.,Listening SkillListen for Numbers,Unit 5 Part II Section II,Rule

35、of Thumb 1 Be familiar with cardinal and ordinal numbers in English and know how to count numbers with multiple digits in English.Rule of Thumb 2 Know how to express time,prices,and rates.Rule of Thumb 3 Some knowledge of basic arithmetic is desirable.,Unit 5 Part II Section II,Word Bank,Unit 5 Part

36、 II Section II Task 1,Notes,Unit 5 Part II Section II Task 1,FHA The Federal Housing Administration(FHA)is a United States government agency created as part of the National Housing Act of 1934.Insured loans made by banks and other private lenders for home building and home buying.The goals of this o

37、rganization are:to improve housing standards and conditions;to provide an adequate home financing system through insurance of mortgage loans;and to stabilize the mortgage market.,Task 1 Complete the following passage after the second listening.,Task,Unit 5 Part II Section II Task 1,The FHA does not

38、make loans;rather,it insures mortgages from lenders who would not otherwise offer loans to those who can make down payments of only 1)percent and who have credit scores of 2)or less.Borrowers pay an FHA insurance premium 3)ways:with an upfront fee that can be included in the total loan amount and am

39、ortized over the life of the mortgage,or in a monthly fee.,3.5,_,620,_,two,_,Unit 5 Part II Section II Task 1,Starting this spring,the administration said,the upfront fee jumps to 4)percent of the loan amount from 5)percent,adding about 6)to a 7)loan.Monthly premium charges will essentially be uncha

40、nged.Previously,the FHA insured loans made to those with credit scores of less than 8),with no penalties.Starting early this summer,the FHA said,anyone with a credit score below 9)must make a down payment of at least 10)percent.(Credit scores are typically measured on a scale of 11)to 12);,2.25,_,1.

41、75,_,$1,000,_,$200,000,_,580,_,10,_,300,_,850,_,580,_,Unit 5 Part II Section II Task 1,most non-FHA lenders require larger down payments and offer higher rates if borrowers have credit scores below 13).)But because lenders have not been offering loans to those with scores of 14)or below,another FHA

42、change will most likely have a bigger impact.The seller could previously finance up to 15)percent of the homes closing costs when the borrower used an FHA mortgage.That will drop to16)percent this summer.,700,_,580,_,6,_,3,_,Task 2 Listen to the audio clip and then do the following exercise.,Task,Un

43、it 5 Part II Section II Task 2,1.What happened to Ashley after a family dinner of lasagna and spinach salad?A.Ashley came down with a bad cold.B.Ashley contracted bird flu.C.Ashleys kidneys failed.D.Ashleys liver failed.2.What was the consequence of her contracting this disease?A.Ashley will one day

44、 need a kidney transplant.B.Ashley can not go back to school.C.Ashley will be on medication all her life.D.Ashley will be handicapped for life.,Unit 5 Part II Section II Task 2,3.Which statement is TRUE according to this dialogue?A.The Armstrongs did not like salads,fresh vegetables and fresh fruits

45、 before,but they like them now.B.Ashley Armstrong was once a healthy,rambunctious boy.C.Ashley Armstrong died from eating the contaminated salad.D.The Armstrongs testified before Congress asking for tougher food safety laws.4.What is the reporters tone in this interview?A.Sympathetic.B.Neutral.C.Cri

46、tical.D.Emotional.,Unit 5 Part II Section II Task 2,5.How many years does a transplanted kidney usually last?A.15 years.B.20 years.C.25 years.D.30 years.6.When did Ashley come down with an illness?A.Last June.B.Last July.C.Last August.D.Last September.7.According to the CNN reporter,how many E.coli

47、outbreaks have occurred since 1995?A.More than twelve.B.More than two thousand.C.More than two hundred.D.More than twenty.,Unit 5 Part II Section II Task 2,8.When Ashley got sick,how old was she?A.One year old.B.Two years old.C.Three years old.D.Four years old.9.What is the full name of the disease

48、attacking Ashley?A.E.coli 0157:H6.B.E.coli 0156:H7.C.E.coli 0157:H7.D.E.coli 0165:H7.10.How many times did Ashleys mother wash the fresh greens before eating?A.Once.B.Three times.C.Twice.D.Four times.,【Script】,Script,Unit 5 Part II Section II Task 2,Task 3 Write down the numbers you hear in the blan

49、ks.,Task,Unit 5 Part II Section II Task 3,1 _ 2 _ 3 _ 4 _ 5 _6 _ 7 _ 8 _ 9 _ 10_11_ 12_ 13_ 14_ 15_16_ 17_ 18_ 19_ 20_21_ 22_ 23_ 24_ 25_26_ 27_ 28_ 29_ 30_31_ 32_ 33_ 34_ 35_36_ 37_ 38_ 39_ 40_41_ 42_ 43_ 44_ 45_46_ 47_ 48_ 49_ 50_,Unit 5 Part V 1,Previously,the FHA insured loans made to those with

50、 credit scores of less than 580,with no penalties.Starting early this summer,the FHA said,anyone with a credit score below 580 must make a down payment of at least 10 percent.(Credit scores are typically measured on a scale of 300 to 850;most non-FHA lenders require larger down payments and offer hi