Unit 5 Meeting your ancestors 单元导学课件（181张）

Unit 5　Meeting your ancestors Period One　Warming Up & Reading Period Two　Learning about Language & Using Language Period Three　Grammar Period Four　Writing ? 单元总结提升 　　周口店北京人遗址是中国最重要的世界遗产之一。然而，今日的周口店却面临着巨大的危险。 单元话题导入 　　The Zhoukoudian Beijing Man Site is one of the most important world heritage(遗产) sites in China. Since the discovery was made in the 1920s, Zhoukoudian has become an important place for archaeologists from all over the world. At the site in the south?west suburb of Beijing, there is, for example, the earliest evidence of the use of fire by humans. It has also been proved that people lived there continuously between 500，000 and 10，000 years ago. 单元话题导入 　　Today, however, Zhoukoudian is in serious danger. Parts of the caves have been badly affected by rain and exposure to the air. Some areas are almost completely covered in weeds, causing serious damage. Pollution from nearby cement(水泥) factories has also contributed to the problem. 　　The site is extremely expensive to maintain (维持) and it will cost between three and five million yuan to repair it. At the moment, visitors are not allowed to visit the caves. 　　 单元话题导入 　　Zhoukoudian is on the World Cultural Heritage List, organized by UNESCO, the United Nations Educational, Scientific and Cultural Organization. The list is constantly checked. Any site which is seriously damaged or which is not properly protected is an endangered heritage, and UNESCO is very quick to do something about situations like this. They have recommended that the site be closed and repaired. If nothing is done to repair it，it could be removed from the list. 　　This is a very serious matter and the Chinese Academy of Sciences is trying to raise public awareness about it. 单元话题导入 　　Dr Zhu Ming of the Academy said, “We have requested that the government get involved, but we also need assistance from ordinary people. They can help by contributing to the cost of repairing the caves. They are a precious part of our cultural heritage—it is of great importance that we do something. If not, it will be a catastrophe.” 单元话题导入 Task: Answer the following questions. 1. When was the Zhoukoudian Beijing Man Site discovered? _____ 2. How much will it cost to repair the Zhoukoudian Beijing Man Site? _____ 3. What does Dr Zhu Ming think of those caves? _____ 单元话题导入 It was discovered in the 1920s. It will cost between three and five million yuan to repair it. They are a precious part of our cultural heritage and we should do something to protect them. Knowledge and skills 　　1．Understand the use of the words, expressions and sentences： 　　(1)Key words and phrases： 　　alternative　n. 可能的选择 　　　　　　　　adj. 供选择的；其他的 　　interrupt　vt. &vi 打断……讲话；打岔，暂时中断或中止 　　acute　adj. 有观察力的；敏锐的；严重的；深刻的 　　assume　vt. 假定；设想 三维目标 　　regardless　adj. 不管；不顾 　　sharpen ... ...