北师大Lesson 1-1 Global Warming.ppt

What will you do every day to help reduce greenhouse gases? In some cases, it only takes a little change in lifestyle and behavior to make some big changes in greenhouse gas reductions. When that action is multiplied by the 1.3 billion people in China or the 6 billion people worldwide, the savings are significant. * Match refer to in turn lead to beyond one’s control ahead of take action look ahead 指，意即 引起，导致 依次 在……前面 采取行动 展望未来 超出……的控制 What natural phenomenon causes polar bears to lose their home? Global warming Global warming refers to an average increase in the Earths temperature, which in turn causes changes in climate. A warmer Earth may lead to changes in rainfall patterns, a rise in sea level, and a wide range of impacts on plants, wildlife, and humans. What is global warming? To summarize the main idea of the passage 2. To learn to talk about global warming 3. To learn the new words and expressions Objectives Words: consensus beyond relevant ray bounce pin agricultural federal coincidence condemn reservation sacrifice advocate recycle substitute threaten pancake hurricane Expressions: refer to in turn lead to beyond one’s control ahead of take action look ahead pump into bounce back to be pinned on 略读(skimming)只看文章标题、下标题以及每个部分或者段落第一行，关注文章中反复出现的关键词。 略读时，要用充足的时间读懂段落的第一句和第二句，因为第一句往往是该段的主题句(topic sentence)，而第二句往往是对前句的延伸(extension)或进一步的解释(explanation)。 通过略读把握文章大意 运用扫读(scanning)迅速浏览从第三句开始的后面部分,搜寻作者对开头两句的支持句(supporting sentences),并同时注意文章中间是否有转折词(transition),因为这些词常常会把文章的思路逆转或加入其它重要的信息。当读到段落的最后一句时,我们又要使用略读,这时必须再次放慢速度(slow down your pace)直到完全消化作者对段落的小结(conclusion),因为该小结有可能与主题句截然相反或引导读者进入下一个段落。 通过扫读寻找特定信息或特定词组 a general idea certain information titles and headings the first and last sentences of paragraphs the first and last paragraphs pictures and charts Scan the text for key words and phrases, dat