Unit 7大学英语基础教程.ppt

Unit Seven average: usually do something or usually happen a particular number of times distinguish: be able to recognize and understand the difference between two similar things or people engage: take part or become involved in activity betray: be or give a sign of involve: include something as necessary part or result vary: be different in different situations tend: often do a particular thing refresh: make you feel that you have more energy again, especially when you are tired or hot contrast: a difference between people, ideas, or thing, etc. that are compared compensate: remove the bad result of something Useful Expressions get along on be involved in be tempted to do sth mull over work out Preview Questions: 1.How many hours do you average a night? 2.What does the text mainly talk about? 3.How many groups does the test divide different sleepers into? What are they? 4.What features do the short sleepers bear according to the text? 5.What feature do the long sleepers bear according to the text? 6.What are functions of dream according to Hartmann ? Background Information Ernest L Hartmann is a psychiatrist and psychoanalyst in the U.S. He is making research in sleep and dreaming. His works The Functions of Sleep and Dreams and Nightmares: The Origin and Meaning of Dreams Published were published in 1973 and 2001 separately. He holds some different viewpoints from Freudians. He argues that dreams are meaningful and shows how dreams, guided by the emotions of the dreamer, make broad connections among our experiences in life. In the end, he concludes, dreaming is immensely useful to the most important psychological task we face and reveals most profoundly who we are. 1. Ninety-five per cent of adult Americans average seven to eight hours a night. average: v. usually do something or usually happen a particular number of times The rainfall here averages 800mm a year. The cost of developing the new drug averages around $500 million. 2. The rest seem t