创新大学英语1级Unit 6教案.doc

一级 Unit 6Unit 6 EnvironmentText: Water, Water EverywhereTeaching Objectives（教学目的）Students will be able to1. Grasp the main idea and structure of the text2. Master the key language points and grammatical structures3. Conduct a series of reading, listening, speaking and writing activities related to the theme of the unit.Teaching procedures（教学步骤）(1) Pre-reading activity （Period1-2）a. Information related to the textb. Introduction to the Text c. Pre-studying vocabulary(2)While-reading activity（Periods3-4）a. The organization of the textb. Detailed reading-study of the language points(3) Post-reading activity （Period 5-6）a. Speaking Activityb. Writing Practicec. Have students finish the exercises and checkPeriod 1-2Pre-reading activitya. Background Information1. Food and Agricultural OrganizationFood and Agricultural Organization (FAO) is a specialized United Nations agency whose mail goal is to eliminate hunger on a world scale. The organizations mandate is to “raise levels of nutrition, improve agricultural productivity, better the lives of rural populations and contribute to the growth of world economy”.The main activities of FAO concentrate on four areas: Offer assistance to developing nations; Provide information about nutrition, food, agriculture, forestry and fisheries; Provide advice to governments; Serve as a neutral forum to discuss and formulate policy on major food and agricultural issues.2. Litre The litre (or liter in the US) is a metric unit of volume. The Litre is not an SI (International System of Units), but (along with units such as hours and days) is listed as one of the “units outside the SI that are accepted for use with SI”. The SI unit of volume is the cubic metre (m3). A litre is equal to 0.001 cubic metres.3. CalorieA calorie refers to a unit of energy. There are two common but different meanings: one is used in food and nutrition, the other was formerly widely used in chemistry, and a food calorie represents 1000 chemistry calorie. The food calorie is sometimes capitalized as Calorie to distinguish it from the chemistry calorie; however, this capitalization is rarely observed in practice.4. Global WarmingGlobal Warming or climate change refers to measurable increases in the average temperature of the Earths atmosphere, oceans, and landmasses. Scientists believe the Earth is currently facing a period of rapid warming caused by rising levels of heat-trapping gases, known as greenhouse gases, in the atmosphere.Greenhouse gas retain the radiant energy (heat) provided to the earth by the Sun in a process known as the greenhouse effect. Greenhouse gases occur naturally, and without them the planet would be too cold to sustain life. Since the beginning of Industrial Revolution in the mid-1700s, however, human activities have added more and more of these gases into the atmosphere. For example, levels of carbon dioxide, a powerful greenhouse gas, have risen by 35% since 1975, largely from the burning fossil of fossil fuels such as coal, oil, and natural gases. With more greenhouse gases in the mix, the atmosphere acts like a thickening blanket and traps more heat.b. Warm-up ActivitiesPurposes：To start students talking about environmental problems;To get students to think about protecting the environment;To help students increase environmental awareness;To familiarize students with the topics in the text.Activity oneDirections: Ask Ss to work in pairs to interview each other.1) Do you think the Earth is in danger now? Why?2) Do you think the earth will be better tomorrow? Why?Tips: Yes/No; There is polluted water, endangered animals / Im satisfied with it now.We can take our responsibility to protect Earth, and live harmoniously with the nature.Activity TwoDirections: Ask Ss the following questions.3) What kinds of pollutions are there on the Earth? 4) What are the effects of pollution?Tips:Three kinds of major pollution: water pollution, noise pollution, air pollution, “white pollution”.Extinction of wild animals, destruction of forests, contaminated water (污染的饮水), excessive use of existing farmland, extensive soil erosion.Activity ThreeDirections: Ask Ss to work in a group of five people to discuss the following question and choose one from each group to make a presentation.5) What can be done to protect the environment? List the ways to protect the environment.Tips:Arouse environmental awareness, undertake environmental initiatives 进行环保措施(e.g. recycle more, save on water, use less of cars, more efficient use of energy), lay down environmental laws, create nature reserves, regenerate waste land, encourage birth control.Period 3-4Detailed Study of the Textrun out of sth.: to be used up, finish or exhausted 用完、耗尽to be used up, finish or exhausted yongwaste land, encourage bith control.on.mistry calorie; however, this capitalization is re.g. We are running out of petrol.run out: to become invalid, expire失效、过期e.g. My passport has run out. / The lease on our flat runs out in a few month.release v. to let news or official information be known and released 发行、发表、发布e.g. Further details about the accident is soon to be released by the government. The new model has now been released for sale. (sth./sb from sth.) 释放、放走e.g. Death released him from sufferings. He was finally released after ten years in prison.reveal v. (sth. to sb) to make sth. known to others 披露、揭露e.g. Details of the murder was revealed by the newspaper. to show sth. preciously couldnt be seen 展示、显示e.g. He laughed, revealing a line of white teethassess v.评价、评定e.g. It is hard to assess the value of the machine. Id assess your chances as extremely small. assessment n.评估、评价 e.g. Whats your assessment of the situation?Be short of 不够、缺乏 e.g. Our library is short of funds now.be short for 是.的简称；为.的缩写形式 e.g. “Jack” is short for Jacksonafford to have enough money or time to be able to buy or to do sth 买得起、抽得出时间e.g. Id like to go vacation but I cant afford the time. to be able to do sth without risking onself. 承担的起做某事的风险e.g. I must be careful because I cant afford to lose my job.domestic connected with the home or family 家用的e.g. Most Chinese families now can afford domestic appliance. of or inside a particular country; not foreign or international.e.g. Security on domestic flights in the US has been increased since 911.odd 少见的 e.g. This doesnt matter on the odd occasion. 古怪的 e.g. He is a little bit odd. 奇数的/单的 e.g. 1、3、5 and 7 are odd number.You are wearing odd socks, one black, one blue.yield 生产 e.g. The research has yielded useful information. (.to sth）屈服、让步 e.g The government has not yielded to public opinion.adopt 采用、采纳、采取 e.g. His suggestion is adopted by his manager. 收养 e.g. He was adopted from abroad.cultivate 耕种 e.g. The land here ahs never been cultivated. 培养、陶冶 e.g. The company has been very successful in cultivating a good image.more than enough 太多，够多 Im afraid Ive eaten more than enough.At the mercy of 受支配 The barbecue was at the mercy of the weather.Along with 和一起 She lost her ID card along with some money.import 进口、输入、引进 n. v.export 出口 n. v.China exports more cars than it exportsLast years exports exceeded imports in value.keep sth. doing 使某物不停的做某事 Please open the door to make the air flowing.keep sth. done 是某物被.Keep your mouth shut and your eyes open.twice/three times as much as. twice/three times of sth 是的两/三倍e.g. Your room is twice as much as mine. The size of your room is twice of mine.e.g. He earns four times as much as me. His salary is four times of mine.opposed to sth. 反对、反抗 They are totally opposed to abortion.as opposed to 与.相反/不同 Im here on business a