(
课件网) UNIT7 Natural Disasters Part 04 Writing and Speaking Discuss and answer. 小组讨论，回答问题。 A. Strong wind blowing over loose soil or sand. Which of the following can cause natural disasters B. Promoting the use of green energy. C. Rapid urban development and heavy industries. D. Volcanoes and wildfires. blow over 吹散；平息 快速的 野火 Natural Disasters and Human Activities Read and choose. 阅读关于自然灾害的课文，回答问题。 There are more and more discussions on natural disasters in recent years. It is known that sandstorms are caused naturally by strong winds blowing over loose soil or sand. Half a century ago, sandstorms happened every seven or eight years; now they come almost once a year. Experts tie the problem to the rapid urban development, and cutting down trees is another reason largely due to human activities. 比较级+and+比较级 越来越... 最近的 众所周知... 半个世纪 一年一次 专家 tie...to...把...与...联系/系在一起 砍倒；减少 动名词做主语 Some people do not pay enough attention to smog, and they don’t know the gases from heavy industry and vehicles partly caused it. These harmful gases also lead to acid rain, though a very small part of acid rain comes from volcanoes or wildfires. When these gases enter the air, they also lead to global warming. pay attention to (doing)...注意... 气体 重工业 lead to do sth. 导致做某事 come from 来自于 Today we are growing too fast to remember the importance of sustainable development for both nature and our human world. Many of the natural disasters are due to the environmental damage caused by human activities. It is lucky that humans have realized the importance of sustainable development as well as the environmental protection, and things are getting better. too...to...太...而不能... both...and...两者都... 也 ...的重要性 it作形式主语 We are promoting the use of green energy, planting more trees and trying to stop global warming. People are advised to use electric cars and public transportation. It is definitely not in our hands to prevent all the disasters. But still, we should make some changes to the environment, and the number of such disasters is sure to reduce. try to do sth.尝试做某事 advise sb to do sth.建议某人做某事 确定地 但是；但至少 ...的数量 be sure to do sth.一定会做某事 in ones hands 在某人的手中 A. People can prevent all the disasters. B. Humans are responsible for many natural disasters. C. Sandstorms, acid rain and smog happen more frequently than before. D. People can do nothing when natural disasters happen. Read and choose. What is the main idea of this text 阅读关于自然灾害的课文，回答问题。 be responsible for 对...负责 Read and complete. 细读课文，找出导致文中自然灾害的原因及应对措施。 Disasters Natural causes Human activities Sandstorm _____ , cutting down trees Smog / heavy industries and vehicles Acid rain volcanoes, wildfires Solutions strong winds blowing over loose soil or sand rapid urban development hea ... ...
