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1、Unit 3Climate,Discussion,1. What is weather?2. What is climate?3. Discuss the climate and weather conditions of your hometown.4. What measures can we take to reduce the greenhouse emissions by leading a low-carbon lifestyle?,Weather vs. Climate,Weather is defined as the atmospheric conditions in a l
2、ocation at a given point in time. Weather takes place in the troposphere（对流层）.Climate refers to the long term weather trends in an area.,Measuring Weather,Word Pretest,elusive adj.difficult to find, catch, or achieve 难以分辨（或捉摸、找到）的，易逃脱的 e.g. The poems meaning is elusive. an elusive criminal 2) diffic
3、ult to remember or recall 不易记住的，易忘的the elusive thought he had had moments before他刚才的一个转瞬即逝的想法,instill=instil v. gradually but firmly establish (an idea or attitude, especially a desirable one) in a persons mind 逐渐灌输，逐步培养（尤指好的思想、态度） e.g. instill knowledge into pupils minds I consider it important to
4、instill a pride in the players.,diminish v.make or become less 减少，减小，缩减，降低 e.g. We should try to diminish the cost of production. Our enthusiasm diminished as time went on. 2) make (someone or something) seem less impressive or valuable 贬低（某人，某物）的形象，减少（某人，某物）的价值 e.g. Dont diminish the importance of
5、his contribution.,scheme n. 1) a large-scale systematic plan or arrangement for attaining some particular object or putting a particular idea into effect 计划，规划，方案 e.g. When you began to work, you might work out a practical scheme. 2) a secret or underhand plan; a plot 阴谋，诡计 e.g. Police uncovered a s
6、cheme to steal paintings worth more than $250,000. v.策划; 图谋,Text I,What do “more voices” refer to in the title?What are fossil fuel sources mentioned in this text?What is the significance of the Doha meeting?Is the Doha meeting a breakthrough in controlling global emissions?,Semantic Variations,will
7、 n.1) a strong determination意志；毅力 e.g. Will can conquer habit. Shell need an iron will in order to succeed.2) intention or wish决断, 意图, 决心 Where there is a will, there is a way. What is his will in the matter? 3) a legal document containing instructions as to what should be done with ones money and p
8、roperty after ones death 遗嘱,course n.The general direction in which ones actions are moving 进展；进程；过程；经过 the course of history 2) A part of a meal served at one time （一）道（菜） Guests are offered a choice of main course. 3) A set of lessons or studies （某一学科的）讲课；课程 a business studies course,spell n.a. )
9、a form of words used as a magical charm or incantation 符咒，咒语 b. ) A condition caused by magical power （因咒语而引起的）着魔 e.g. The magician may cast a spell on (施咒语) himself.2) An unbroken period of time (某事物持续的)一段时间 a spell of fine weather3) Forming words with the letters in the correct order 拼写,lant n.1)植
10、物2) Heavy machinery重型机械, 机械设备 e.g. They have made a huge investment in new plant. 3) A factory工厂 a power plant a car plant,release n.1)A new film or record that has been issued发行的新影片(或录音制品等) e.g. The film was withheld for two years before its release. 2) A process that liberates or discharges someth
11、ing 释放, 排放, 解除 After my examination I had a feeling of release.3) A news item or document that has been made available新闻发布；新闻稿,elements n.The weather or the powers of nature （尤指强风、暴雨等恶劣）天气 e.g. We battled against the elements. 2) A particular group of people 某群人或组织中的一组，一伙 extreme right-wing elements in the army 3) The first or most simple things one has to learn about a subject 基本组成部分，要素,
