教案New Horizon College English新视野大学英语读写教程读写教程（四）教研室：大学英语教研室教师姓名：授课专业课程名称大学英语（ 4）和班级Unit 4 Achieving 授课学时 6授课内容sustainableenvironmentalismThe teaching objective of this unit is to help students:1.To grasp the main idea and structure of the text;2. To understand the structure of “rebut and organize counter-arguments”;3. To write an argumentative essay;教学目的4.To master the key language points and grammatical structures inthe text.5.To conduct a series of reading, listening, speaking andwriting activities related to the theme of the text.1.Text structure analysisnguage points:Key words and expressions : environmentalism,constituent, segregate, consolidate, differentiate,definitive, deplete, reversible, chord, regime, call教学重点upon/on, be incompatible with, either-or, as ⋯ as thenext person/man, choose sth. over sth. else, frame/ stateof mind.3. Writing skills: how to rebut and organize counter-arguments教学方法教学过程作业辅助手段辅导答疑1. Communicative approach;2.Task-based teaching method;3.Audio-lingual method.1.Pre-reading Activities2.Text Structure Analysis3.Detailed Study of the Text4.Grammar and exercises5.Writingandreading skills practice Homework:1.Write a paragraph with the structure of “rebut and organize counter-arguments”.2.Recite the appointedparagraph. Multimediasoftware, CD-ROM教学内容I. Pre-reading ActivitiesStep 1: To ask students some questions concerning environment like:What are the pollutions to environment? How to prevent pollution?What to do to make the protection sustainable?Step 2: Discuss in groups.Step 3: Introduce background information.Ⅱ. Text Structure AnalysisAsk the Ss to read the passage as quickly as they can and to get themain idea of each paragraph and make clear about the text structure.Purpose: Improve the students reading’ and writing ability and understand the general idea of each paragraph.Method : Read the text individually and discuss in groups.Part I (paras. 1): Introduction to environmental protection.Part II (paras. 2-10): Body: rules on environmental protection.Part III (paras. 11-13): Conclusion: nature should be subordinate to human beings.Ⅲ. Detailed Studies of the TextNew words and expressions1. constituentn. a) sb. who votes in a particular area.When the vote was announced, all the constituents broke into cheers.当投票结果宣布时，所有的选民都欢呼起来。
b) one of the substances or things that combine to form sth..Caffeine is the active constituent of drinks such as tea and coffee.咖啡因是茶和咖啡这类饮品的活性成分。
2. segregatevt. a) separate one part or thing from anotherWomen’s dresses are segregated from the misses’in many departments.在很多百货商店，成熟女装和少女装是分开的。
b) separate one group of people from others, esp. because they ateof a different race, sex or religionThe students are segregated according to their proficiency in English.学生按英语水平的不同进行了划分。
3. consolidatev. a) combine things in order to make them more effective or easier to deal with. They consolidated four provinces to form three new ones. 他们把四个省合成了三个。
b) strengthen the position of power or success that you have, so thatit becomes more effective or continues for longer.May the friendship ties between our two countries be further developed and consoldated!愿我们两国的友谊能够进一步发展和巩固。
4. differentiate v.1recognize or express the difference betweenthings or people She has learned todifferentiate the two kinds of roses.她已经学会区分这两种玫瑰。
5.differentiate betweenidentify differences between two or more things or peopleNo longer is he able to differentiate between fantasy and reality.他不能区分虚幻和现实。
6.costless a.not costing anythingThe internet provides us a costless way of sharing.互联网为我们提供了免费共享信息的方法。
7.deplete vtreduce the amount of sth. or the number of thingsIf we continue to deplete the earth’s natural resources, we will cause serious damage to the environment. 如果我们继续减少地球上的自然资源，我们将对环境造成严重破坏。
8. reversible a.able to return or be changed to a previous stateHe obesity-related cognitive effects might be partly reversible.肥胖对认知产生的影响或许是部分可逆的。
9.allege vt.say that sth. is true or that sb. has done sth. wrong or illegal even though this has not been proved.The accused is alleged to have robbed a bank. 据称，被告抢劫了一家银行。
10.take ondevelop a particular character or appearanceThe relations between the two countries may take on a new look.两国之间的关系也许将呈现出新面貌。
11. run/go against the grainbe completely different from what you feel is right,natural, or normal for you His music generally runsagainst the grain of what is modern.他的音乐总体上和现代音乐格格不入。