大学英语Unit5,1.2.3段.ppt

* We live in a watery world，but climate change and population growth are leading the planet toward a water crisis. 翻译： 我们生活在一个充满水的世界，但是气候的变化和人口的增长导致这个星球朝向水危机。 Everyone needs safe drinking water，but about 1.1 billion people have no access to clean water . ①By 2050，the world’s population ②could grow from 6.7 billion to more than 9 billion . All of those people will need water to drink，to grow crops and to produce energy . 翻译： 每个人都需要安全的饮用水，但是大约十一亿人没有可以使用的纯净水。到2050年为止，这个世界的人口可能会从六十七亿人增长到超过九十亿人。所有的这些人都将需要水，去喝，去种植和产生能量。 ①By+时间点：时间状语，可放在句首或句尾，放句首时，需加逗号，译为到这个时间为止。 ②Could：在句中表示一种可能性，译为可能。 By 2018，I could be a gentleman. I could have a lot of money by 2030. ①Because of climate change，some areas of the world are growing drier . The total area of the Earth’s surface classified as very dry has doubled ②since the 1970s . The combination of climate change and ③increased demand is ④pushing the world toward a crisis over water. 翻译： 由于气候的变化，世界上一些地区越来越干燥。从二十世纪七十年代起，地球表面极为干燥的总面积已经翻了一番。气候的变化和人们日益增长的对水的需要共同作用，正在把世界推向一场水危机。 ①Because of ：由于。还有表示由于的词：Owing to、Due to、Result from、Thanks to（多亏） Because of the rainy day，the match is put off. Thanks to his help，I win the game. ②Since+时间 ：从······起，句子用现在完成时。 My brother has known the importance of study since last year. ③Increased ：是动词Increase的过去分词，此句中充当形容词，修饰Demand，隐含该动作已经完成。 ④Push A toward B ：把A推向B。 His foolish mistakes pushing the team toward fail. 小组成员： PPT制作：汪岩 资料收集：冯娟、康婷 演讲：刘洋洋、吴玉儿、汪岩、曾慧娟 *