《大学英语视听说教程.ppt》由会员分享，可在线阅读，更多相关《大学英语视听说教程.ppt（71页珍藏版）》请在三一办公上搜索。
1、Unit 2 Green Spaces in Cities,江西信息应用职业技术学院孙敏,Teaching context,Time Allotment:Unit 2 Section B(50 m)Chapter：Green Spaces in CitiesTeaching aims：The teaching of this text aims to enable students:to master the new words and useful phrases.to get acquainted with skills of reading paragraphs with a gener
2、al statement that is supported by specific details.to get acquainted with skills of reading for main ideas.to practice what has been learned.,Teaching important and difficult points:learning the ways of reading skills from the passageslearning the new words and useful expressions in the textdoing th
3、e relevant exercises after the classes,Teaching context,Teaching context,Teaching methods：utilizing the multi-media classroom to show courseware for studentslistening and reading the words,useful expressions and text from the teaching CDLearning these courses as following:http:/-corner/,Reading Skil
4、ls,Finding Out Word Meanings What shall we do when we come across unfamiliar words in our reading?Many times we can figure out the meaning of an unfamiliar word from clues provided by context.The particular reading skill introduced for this unit is finding out word meanings through context clues.In
5、the text we list as many as 7 different ways of finding out the meaning of an unfamiliar word.The context clues that might be helpful for you to recognize the meaning of a new word include:,Some sentences give the definition for a difficult word with the help of punctuation such as commas,dashes or
6、parentheses.Context sometimes gives examples to illustrate a difficult word rather than define it.We can use the examples to figure out the meaning of an unfamiliar word.,Reading Skills,Synonyms(同义词)are words or phrases that are similar in meaning.A synonym is one type of context clue that helps you
7、 to determine the meanings of unfamiliar words.,Reading Skills,Antonym(反义词)clues.Antonyms are words or phrases that have opposite meanings to other words or phrases.Antonym clues can help you understand new words.Sentences before or after a sentence that has a difficult word sometimes explain the me
8、aning of the word.,Reading Skills,Sometimes we can use our own experiences,or our knowledge about a certain topic,to find out the meaning of an unfamiliar word.Word part clues.We can often figure out an unfamiliar word because we know the prefix or suffix attached to the root word,or the two words t
9、hat make up a compound word.,Reading Skills,Here we have picked out some examples from Reading Passage A to explain how this particular reading skill is used in practice.Example 1 Context clue:We can often figure out an unfamiliar word because we know the prefix or suffix attached to the root word.E
10、xample:The great majority of nations concern themselves with economic development,regardless of its effect on the global ecology.Explanation:We can find out the meaning of the new word global,because we know that this adjective is formed by adding the suffix-al to the noun globe.,Reading Skills,Exam
11、ple 2 Context clue:Sentences before or after a sentence containing a difficult word sometimes explain the meaning of the word.Example:The nations of Eastern Europe.are considered the most polluted of all the worlds industrialized countries.Heavy metals from coal mining have contaminated much of the
12、areas waters.Rivers,land,and forests are so contaminated that many are now biologically dead.Explanation:The sentence before and after the sentence which contains contaminated both help us to find out the meaning of the word,that is,polluted or made dirty.,Reading Skills,Example 3 Context clue:Sente
13、nces before or after a sentence containing a difficult word sometimes explain the meaning of the word.Example:Ghanas population has been growing by 3.2 percent a year.This explosive growth has led to removal of forests in much of the country,and excessive use of existing farmland.Explanation:The fir
14、st sentence says:Ghanas population has been growing by 3.2 percent a year.This clearly explains that“this explosive growth”in the second sentence means“rapid growth”.,Reading Skills,Example 4 Context clue:Sometimes we can use our own experiences,or our knowledge about a certain topic,to find out the
15、 meaning of an unfamiliar word.Example:Indonesians have traditionally favored large families,and their major religion,Islam,frowns on birth control.Explanation:According to our knowledge about Islam(and what is said in the first part of the sentence),we know that frown on most probably means does no
16、t approve of.,Reading Skills,Example 5 Context clue:We can often figure out an unfamiliar word because we know the prefix or suffix attached to the root word.Example:Observers say the program has succeeded in strengthening the countrys agricultural base and bringing a new source of wealth to village
17、rs.Explanation:This noun is formed by adding the suffix-er to the already familiar verb observe,so we can find out the meaning of the word:someone who observes.,Reading Skills,The Practice of Reading Skills,Warm-up Questions and lead-in:Ss do the relevant exercises in Reading Skills,then T check the
18、 right answers for reference:,1.A 2.D 3.B 4.A 5.C,Preview,Environmental awareness takes second place to economic development in most nations of the world.As damage to our environment increases,however,some nations are developing programs to protect their natural resources.The passage tell us how som
19、e cities have begun to increase the amount of green spaces in balance with nature or we will destroy the earth home we share.,Founded in 1972,the Trust for Public Land(TPL)is the only national nonprofit organization of America,working only to protect land for human enjoyment and health.TPL helps pro
20、tect land for recreation and soul food and to improve the health and quality of life of American communities.Portland,a seaport in U.S.A.,is the largest city of Maine.Maine is a state on the northeastern coast of the U.S.A.Augusta is its capital.It is very hilly,with the White Mountain lying in the
21、west.Maine was visited by Cabot in 1498,and colonized by the English in the 17th and 18th century.It became the 23rd state of the U.S.A.in 1820.,Background Information,Background Information,Portland Parks and Recreation Department is a city government department.Parks and Recreation Department can
22、be found at all levels of governments in the U.S.,whose mission is usually to assure access to leisure opportunities,enhancing natural beauty and promoting tourism.The Pacific Ocean is the largest ocean,separating America from Asia and Australia.Its length is 15,000km.Its width from Panama to Malaya
23、 is 18,000km.With its coasts it makes up a great volcanic area.,Phoenix,the capital and largest city of Arizona,U.S.A.,is the center of an irrigated agricultural district as well as electrical and electronic engineering,farm machinery,aircraft,food processing,metallurgy,and tourism.Arizona is a stat
24、e in the southwestern U.S.A.Its capital is Phoenix.It is divided by mountains with a high plateau in the northeast and desert in the southwest.The U.S.A.acquired most of the state from Mexico in 1848,and the rest as part of the Gadsden Purchase in 1854.It became the 48th state of the U.S.A.in 1912.S
25、alt River in this text refers to the Salt River lying in the middle east of Arizona.Another one is located in the middle north of Kentucky.Still there is another one in the northeast of Missouri.,Background Information,Background Information,Baltimore is a port and import-export center of Maryland,U
26、.S.A.,on an inlet from the Chesapeake Bay.Lying at the base of the San Francisco Peaks at a height of 7,000 feet above sea level,Flagstaff offers four distinctive seasons of weather,great hiking and outdoor recreation opportunities,a rich and diverse art and culture community.The quality of life in
27、Flagstaff is so near perfect that each year it is judged one of the top cities in which to live.The San Francisco Peaks is the mountain that lies at the north of Flagstaff,Arizona.It is the highest place in Flagstaff.,Learning the text,Warm-up Questions and lead-in:Ss read the text with 4 questions,
28、then T ask Ss to answer them.1.What do most countries concern themselves with?2.Why and how do people change their attitudes towards increasing green spaces?3.How did Portland increase its green spaces?4.What measures did other countries take to increase theirs green spaces?,New Words and Phrases,va
29、cantrareoptionenormousprivateownershipliterallyurbanpavemud childhoodbulb,containeramateurgardenerpeasaladcostlyditchlorryerectMisterViceNineteen,Next step,New Words and Phrases,conservationtrailcharacterizehousingrecreationacrecanalexcursioncomparablestripsummitplotcivilian,open fieldin facton top
30、ofwork onpower linecoordinate ones efforts toclean up up to for instancewash awaylead into,vacant,a.1.not filled or occupied;empty 未被占用的，空着的 There are several vacant plots in the area available for building on.那个地区还有好几块地皮可以用来造房子。2.(position or post)unfilled（职位、工作等）空缺的 Today there are thought to be a
31、bout 100 full-time posts vacant.今天据称大约有100个全日工作岗位空缺。3.showing no interest or activity 茫然的，空虚的 His mind seemed completely vacant.他的脑子里似乎一片空白。,rare,a.1.not often happening or seen,etc.;not common 稀有的，罕见的；冷僻的 It is rare for her to arrive late.她极少迟到。2.not common and as a result sometimes valuable 稀罕的，珍奇
32、的 The museum is full of rare and precious treasures.博物馆里到处是稀有珍宝。,option,n.1.thing that is or may be chosen;choice 供选择的事物，可选择的事物；选择 There werent many options open to him.对他来说，没有多少选择的余地。2.power or freedom of choosing;choice 选择权，选择自由，选择 I have little option but to go.我没有选择，只能走。,enormous,a.very large 巨大
33、的，庞大的，极大的He earns enormous pay,so he can live in an enormous house and drive an enormous car.他工资很高，所以他住大房子，开大车。It gives me enormous pleasure to welcome Professor Hall.欢迎霍尔教授使我极感愉快。,private,a.1.of,belonging to or for the use of one particular person or group only;personal私人的，个人的，私用的，私有的She never spok
34、e about her past or her private life.她从未谈起过她的过去或她的私生活。2.not to be told to others;secret 秘密的，私下的This letter is strictly private.这封信是绝密的。3.of,belonging to or run by an individual or a self-governed company rather than the State;not state-controlled 私营的，私立的，非国家控制的Banks should be supporting small,privat
35、e businesses.银行应该支持小型私营企业。,ownership,n.state of being an owner;(right of)possession物主身份，拥有（权）The restaurant is under new ownership.这家饭店已换了新主人。The ownership of the land was transferred to John Smith.那块土地的所有权转让给了约翰史密斯。,literally,ad.in a way that follows exactly the original;exactly 照字义，逐字地，真正地When he
36、said he never wanted to see you again Im sure he didnt mean it literally.当他说他再也不想见你时，我肯定他并不真的是那个意思。Idioms usually cannot be translated literally in another language.成语通常不能用另一种语言逐字翻译。,urban,a.of,located in or living in a city or town 都市的，位于都市的，住在都市的 the urban population 城镇人口 He prefers country life t
37、o urban life.他喜欢乡村生活而不喜欢城市生活。,pave,vt.cover(a surface)with flat stones or bricks or tar 给（道路路面）铺上石板或砖 The country boys thought the streets of London were paved with gold.乡村青年以为伦敦遍地是黄金。,mud,n.soft wet earth 湿泥，泥 The rain turned dust into mud.雨把灰尘变成了湿泥。My shoes were covered with mud.我的鞋上沾满了泥。,containe
38、r,n.box,bottle,etc.in which sth.is kept,transported,etc.容器（箱、瓶等）She kept the buttons in an old ice-cream container.她把纽扣放在一个旧冰淇淋盒里。,amateur,a.taking part in an activity for pleasure,not as a job,or(of an activity)done for pleasure,not as a job 业余的，非专业的 Lawton was an amateur singer until the age of 40
39、,when he turned professional.劳顿本是个业余歌手，直到40岁才成为专业歌手。n.person who practices a sport or arts skill without receiving money for it（指不为赚钱而从事体育或艺术的）业余爱好者 Although hes only an amateur hes a first class player.虽然他只个是业余爱好者，可他却是个一流的选手。,gardener,n.person who works in a garden,either for pay or as a hobby(因爱好或
40、挣钱)在花园从事劳动的人，园丁 Im not much of a gardener.我不很擅长园艺。Our new garden is so big that we have had to hire a gardener.我们的新花园很大，因此我们必须雇一个园艺工。,costly,a.costing much;expensive 昂贵的，代价高的 It would be too costly to repair the car.这辆汽车修理起来费用太高了。Our holiday in Australia was very costly.我们在澳大利亚度假开销很大。,erect,vt.1.bui
41、ld,set up;establish 建造，建立，竖立 They plan to erect an office building there.他们打算在那儿建造一幢办公大楼。2.set straight up;put up 树立，直立 The pole was erected on a firm base.这根杆子竖立在坚固的基座上。a.standing on end 竖直的，挺直的，直立的 Hes very tall and erect for his 78 years.他虽然已 78岁了，但依然个头高挺，腰杆笔直。,vice,a.acting instead of 代理的，副的vice
42、 president 副总统，副社长，副会长 Geraldine Ferraro tried to become the first woman Vice President of the US,but did not succeed.杰拉尔丁.范拉露想成为美国第一位女性副总统，但没成功。,conservation,n.prevention of loss,waste,damage,destroying,etc.保护，保存,节省wildlife conservation 野生动物保护 As well as helping the environment,energy conservation
43、reduces your fuel bills.节省能源不但有利于环境，还能减少你的燃料支出。,trail,n.1.path,esp.through country 小道，崎岖小路 Keep to the trail;if you leave it,youll get lost.沿着这条小路走；假如偏离它，你就会迷路的。2.mark or sign in the form of a long line left by sth.or sb.passing by 踪迹，痕迹 The hunters followed the tigers trail.猎人们跟踪追捕老虎。v.1.drag;be dr
44、agged along behind 拖，拉，下垂 Her skirt was trailing along in the mud.她的长裙在泥里拖地向前。2.fall behind（在比赛中）落后，失利 They trailed by two goals to one at half-time.他们上半场以二比一落后。vt.follow the trail of;track 追踪，尾随 Hunters can trail wild animals through the forest.猎人能在森林里跟踪野生动物。,characterize,vt.1.be common to(sb./sth.
45、)成为.的特征，以.为特征 Bright colors characterize his early paintings.色彩明亮是他早期绘画的特点。The education approach there is characterized by an emphasis on success in exams.重视考试是那里的教育制度的特点。2.describe by stating its main qualities 描绘（人或物的）特征，归纳（人或物的）特征 The story characterizes the wolf as a tricky and cruel animal.这个故
46、事把狼描绘成一种狡猾和残酷的野兽。,housing,n.1.houses,flats,etc.住宅或公寓，住宿（集合名词）The government has promised to provide cheap housing for poor people.政府许诺为穷人提供价廉的住房。2.providing houses or flats for people 提供住宿，住房供给 the citys housing policy 城市的住房政策,recreation,n.(means of)entertaining oneself after work;relaxation 休养，娱乐，消
47、遣，精神放松 My favorite recreation is singing.我最喜欢的娱乐是唱歌。I climb mountains for recreation.我爬山是为了消遣。,excursion,n.short journey for pleasure 短途旅行，远足 Next week we are going on a day excursion to the mountains.下个星期我们打算作一次登山一日游。An optional excursion has been organized for every day of your holiday to a nearby
48、 place of interest.你们假期的每一天都组织有到附近某个景点去的自愿远足活动。,compared,a.1.similar,that can be compared,equal to 相似的，同类的 A comparable car would be much cheaper out of the country.一辆类似的汽车在国外要便宜多了。2.meriting being compared 可比的，比得上的 The profits of these two companies are not comparable with each other.这两个公司的利润相互之间没有
49、可比性。,strip,long narrow piece(of material,etc.)or area(of land,etc.)狭长的一块（材料）或一片（土地）a strip of paper 一张纸片 We lost thousands of soldiers in the war and all we got was this narrow strip of land in return.我们在战争中失去了数千名士兵，可得到的却只是一块狭窄的土地,strip,vi.take off ones clothes 脱去衣服 The doctor asked the patient to s
50、trip.医生让病人脱去衣服。vt.1.take off(clothes,parts,etc.)from sb./sth.剥去，揭去，除去（衣服、遮蔽物、某部分）The paint will be difficult to strip off.这层漆面很难除去。2.take away(money,honors,etc.)from sb.剥夺.的（钱财、荣誉等）When the athlete was found to have taken drugs,he was stripped of his gold medal.一旦获得金牌的运动员被发现了服用违禁药物，他的冠军头衔立即被取消。,summ
