职中英语课件——自然灾害.pptVIP

* Lesson 3 Natural Disasters 制作人：肖启艳 landslides hurricanes tsunamis floods droughts earthquakes Volcanic eruption Forest fires typhoons forest fires floods, droughts, windstorms, earthquakes, volcanic eruptions, forest fires, hurricanes hurricanes Caused by people Made worse by people Natural The main idea of each para : Why volcanoes and earthquakes are even more dangerous than that in the past? : Volcanic eruptions and quakes have always been a threat in certain parts of the world. : Reasons that why natural is beginning to turn on us :There may be a more terrible eruption in the future, according to the prediction of most disaster experts. : In the last decade, the natural disasters have become increasingly common. Para 1 Para 3 Para 4 Para 2 Para 5 The complicated sentences 1.The last few years have seen environmental disasters on a grand scale,…. 此句用了拟人手法‘过去几年见证了大范围的环境灾害’ ‘(in) the last few years’ ‘在过去的几年里’,通常与现在完成时连用，比如在文中第一段第一句‘in the last decade … have become….’,第二段第四行‘in the last three years,… has had….’,第四段最后一句‘…which have…in the last hundred years’ ２. Reduced rainfull has affected… for years leaving irrigation cannals dry and …. for years ‘很多年来’一般也与现在完成时连用。 ‘leaving irrigation cannals dry’此处现在分词做结果状语，表示‘结果使许多灌溉运河干涸’ leave sb/sth +adj. 使…处于一种状态。比如，leave the light on/off 使灯开着或关着 *