李观仪 3-3 new.ppt

新编英语教程A NEW ENGLISH COURSE主编 李观仪 BOOK 3 UNIT 3 Unit 3 Text I Information related About the author Language Points Main Idea Text II Information related Text III Guided Writing Three Sundays in a Week Time Zones A time zone is a region of the Earth that has adopted the same standard time, usually referred to as the local time. Time zone refers to any of 24 geographic areas into which the earth is divided for the purpose of maintaining a standard time system. Clocks within a given time zone are set to the same time, which is generally one hour later than the zone immediately to the west. Each time zone is defined by its distance east or west of Greenwich, England. International Date Line International Date Line is an imaginary line on the surface of the Earth opposite the Prime Meridian (本初子午线) which offsets the date as one travels east or west across it. Any traveler circling the globe in a westward direction lengthens the day by 1 hour for every 15°of longitude traveled because the traveler is following the apparent motion of the sun; International Date Line by the time he or she has traveled completely around the world, the traveler is one full day ahead of the people who have remained at the starting place of the trip. Similarly, going eastward, a traveler arrives a day behind. Greenwich Observatory Greenwich Observatory is located at the University of Cambridges Institute of Astronomy, east central England. About the Author Edgar Allan Poe 埃德加?艾伦?坡 (1809?– 1849), an American poet, critic, and short-story writer, is considered the inventor of the detective-fiction genre, one of the most important American authors of the 19th century. His short stories deal chiefly with mystery, horror, and crime. He was the first well-known American writer to try to earn a living through writing alone, resulting in a financially difficult life and career. Language Points It so happened that… 十分碰巧 It so h