选修模块8 Unit 22 Environmental Protection Lesson 3 Natural Disasters 课件（45张）

课件45张PPT。Unit 22 Environmental ProtectionLesson 3 natural disasters 1.grand adj. big and very impressive 2.scale n. the size or level of sth 3.separation n. the condition of being separated 4.rough adj. unpleasant or difficult 5.mountainous adj. having many mountains Word Review巨大的规模，大小分离，分开艰难的多山的 6.slip v. fall off 7.slide v. to move smoothly over a surface 8.landslide n. sudden fall of a lot of earth or rocks down a hill, cliff 9.shabby adj. old and in bad condition 10.construct v. build Word Review滑落滑行滑坡，山崩破烂的建造Warm UpDefinition Natural disaster is the consequence of a natural hazard, such as floods, droughts, mud-rock flows, seismic sea waves, earthquakes, windstorms and the stretching of new deserts which affects human activities . 自然灾害是影响人类活动自然风险，例如洪水，干旱、泥石流、海啸、地震，风暴和沙尘暴。What do you know about natural disasters?Warm UpWhat do you know about natural disasters?Let’s do a quiz.1. Which country has the largest number of active volcanoes? A. Japan B. Indonesia2. Where do most earthquakes occur? at mountainous areas B. at plate（板块） boundaries3. What do you do in an earthquake? A. Run to a brick building B. Get to an open area4. Most tsunamis(海啸) are caused by .A. Earthquakes B. Hurricanes Many years ago, an earthquake attacked Wenchuan. It was on a grand scale. Thousands of people lost their wives, children… The separation from their families made them live a rough (or hard) time.During the quake, houses fell down. In the mountainous area stones, bricks slip and slide downhill in the landslides. People lived in shabby houses or tents. However Sichuanese are very strong. With the help of the whole nation, they constructed their homes soon. Now a new Wenchuan stands in front of us.Look back to 2008 Brainstorm Besides earthquake , there are many natural disasters, can you name some?typhoon tsunami thunderstorm Natural disasaters droughtslandslidevolcanic eruption forest fireflood1. What disasters have been threatening the lives on the earth?droughtearthquake2008 Wenchuan earthquake?floodforest firehurricanelandslidetsunamityphoonvolcanic eruption Task 1 Gap-filling Use the strategies to complete the gaps in the text(1-5) with these sentence(a- g). There are two extra sentences you do not need. Reading strategies:completing texts with sentence gaps (a) read the text to get the general idea. (b) read a paragraph with a sentence gap and identify the topic. (c) read the sentences before and after the gap and look for clues about the missing setence. (d) certain words may help you: time references, pronoun references, linking words. (e) decide which sentence goes in the gap. check that it fits the sentences before and after it.(a) But evidence shows that 73,000 years ago there was a much greater eruption. (b) Even Europe has suffered and large areas have been underwater. (c) That is probably not the most important factor either. (d) Third, the other bits of land you mig ... ...