1、Unit 3Understanding ScienceMATTERS OF LIFE AND DEATH Medicine and Health1900:Patients battle illness, while doctors can do little more than counsel (勸告) and comfort them and keep them clean.Today:Doctors treat and often cure patients with a vast array (一大批) of medicines and medical technologies, but

2、 some diseases are still incurable.FASTER, CLOSER, BETTER Technology1900:The only way to view the Olympic Games in Paris is in person. News about the Games travels to America via (通過(guò)) telegraph and is printed in newspapers. Today:Millions worldwide watch the 2008 Beijing Olympics on television, tran

3、smitted instantaneously (瞬間地) by satellite. The news spreads as well by radio, newspaper, and the World Wide Web.ORIGINS Earth and Life Science1900:There is no good explanation for catastrophic events such as earthquakes. The Earth is thought to be a mere 50 million years old, and the evolution of s

4、pecies is hotly debated.Brainstorm some of the scientific and technological inventions. cell phonee-maillaptop (筆記本電腦)nanotechnology(納米技術(shù)) genetic engineeringclonenuclear weaponsDiscussion Do all these inventions always change our lives for the better? Give examples to explain your opinion.Brief Int

5、roduction to Stephen HawkingChronology of Stephen Hawking1942 Born in Oxford, England.1958 Entered Oxford University and became especially interested in thermodynamics (熱力學(xué)), relativity theory, and quantum mechanics (量子力學(xué)).1962 Received a bachelors degree in physics and then enrolled as a research s

6、tudent in general relativity at the Oxford University .1966 Earned his Ph.D. degree at the University of Cambridge. Stayed at the University of Cambridge to do post-doctoral research. Diagnosed as having Amyotrophic Lateral Sclerosis (ALS) (肌萎縮性脊髓側(cè)索硬化). 1977 Became a professor of physics.1979 Appoin

7、ted Lucasian Professor of Mathematics at Cambridge, a post once held by Isaac Newton.This is a picture of Stephen Hawking, “Isaac Newton” and “Albert Einstein”. Oxford University University of CambridgeFrankenstein, or The Modern Prometheus, generally known as Frankenstein, is a novel written by Mar

8、y Shelley. The title of the novel refers to a scientist, Victor Frankenstein, who learns how to create life and creates a being in the likeness of man, but larger than average and more powerful. In popular culture, people have tended incorrectly to refer to the monster as “Frankenstein”.Exposition v

9、s. NarrationExpository writing: longer sentences, longer paragraphs;1. third-person narration;2. sentences in the passive voice.A typical piece of expository writing begins with a statement of opinion, then goes on to give supporting details.Para. 3Part 2. a mini-expositionPart Division of the Textp

10、robable 語(yǔ)氣比 possible 強(qiáng)，指有根據(jù)、合情理、值得相信的, 帶有大概、很可能的意思。 It is probable that he has forgotten our appointment.do without: manage to survive, continue, or succeed, although you do not have sth. you need I havent enough money to buy a car, so Ill just have to do without.put / turn the clock back: return to

11、 a situation that used to exist, usually because the present situation is unpleasant. Forget all about it and look to the future; you cant turn the clock back.inquire 是較正式的書(shū)面用詞，渴望知道某人或某事的確實(shí)情況。He inquired your telephone number.ask 是最常用詞, 指為了了解某人或某事而提出問(wèn)題, 請(qǐng)別人解答或向別人打聽(tīng)消息。Excuse me. May I ask you a quest

12、ion?question 指對(duì)某事不斷提出問(wèn)題，以便了解詳細(xì)情況The suspect was questioned by the rmed: adj.knowing things; having all the informationKeep me informed of fresh rm 向某人傳遞信息, 特別適用于告知所發(fā)生的情況或有關(guān)資料（可以用于上級(jí)對(duì)下級(jí)，也可以用于下級(jí)對(duì)上級(jí)的通知）。I have just received a letter from my old school informing me that my for

13、mer headmaster, Mr. Reginald Page, will be retiring next week. tell 最通用，最不正式。指把某事告訴某人。 Glancing at her scornfully, he told her that the dress was sold. 他輕蔑地看了她一眼，告訴她說(shuō)那件衣服賣掉了。 instruct 較正式，意為“指示（一般用于上級(jí)對(duì)下級(jí)），通知”。 The editor at once sent the journalist a telegram instructing him to find out the exact number of steps and the height of the wall. 編輯立即給這位記者發(fā)了一份電報(bào)，叫他查明臺(tái)階的準(zhǔn)確數(shù)目以及圍墻的高度。basis 多用于比喻，指信念、議論等的根據(jù)Charity toward others is the