公开课必修三Module4SandstormsinAsia

1、Module4Sandstorms in AsiaCan you name some natural disasters?tornadohurricaneNatural Disastersearthquake sandstormlightningvolcanic eruptionThe sky is yellow and it is difficult for us to see things clearlyDiscussion 1.What happened in these pictures?2.How about the sky ?3.Why do they wear masks ? B

2、CAInner Mongolia GansuXinjiangBCDANorth AmericaCentral AfricaAustralia Central AsiaSandstorms in AsiaReading and VocabularyPre-readingcitizencycle(v)dustexpertforecastprocesssituationsurvivea. to ride a bicycleb. someone who knows a lot about a particular subjectc. things that happen one after anoth

3、erd. someone who lives in a particular town or country e.very small bits of dirt or earth,on the ground or in the air f. to continue to live after a difficult or dangerous situation or eventg. to say what will probably happen h. everything that is happening at a particular time d a e b gc h fMatch t

4、he words with their meanings.While-readingSkimming (略读) 方法指导1. 浏览标题 2. 读首段，抓中心。3. 浏览其他段首末句。4.最后读结尾段。Fast-readingRead fast and try to find the main ideas of each paragraphsMatch the paragraphs with their main ideas c. a major disaster in Asiaa. the description of sandstormsb. the causes of sandstorms

5、 e. the government s measuresf. the forecast and suggestions d. the effects of sandstormspara.1 para.2para.3para.4para.5para.6Look at the photo on page32 and answer the questions 1.What is a sandstorm?2.What is the cyclist wearing and why?3.What happens to traffic in sandstorms?4.What do experts sug

6、gest people to do in sandstorms?Fast-reading Scanning(查读) 方法指导1先看题，明确查询信息的特点2快速阅读，找到关键词3停下细读，理清答案1.What is a sandstorm?2.What is the cyclist wearing and why?It is a strong, dry wind that carrys sandShe is wearing a mask to protect herself3.What happens to traffic in sandstorms?4.What do experts sugg

7、est people to do in sandstormsIt moves very slowlybecause the thick dust makes it difficult to see. Stay at home.Careful-readingcauseseffectssuggestions measuresFill in the chartclimate changes cut down treesdig up grassan orange sky, strong winds, city in a thick, brown-yellow dustmove slowly,diffi

8、cult to see and breatheplant trees/grass desertification not to go out, wear a maskFurther reading: 1.Sandstorms are strong winds carrying _ through the air. A. dirt and mud B. rain and heat C. sand and dust D. cloud and snow 2.What do the experts advise people to do when a sandstorm arrives in the

9、city? A. Dont go out B. Dont wear masks. C. Dont go to work as usual. D. Dont ride bicycles 3.The factors that cause land to be desert are _. A. cutting down trees B. digging up grass C. climate changes D. all of the above4. From the last paragraph, we know _. A. the government is taking measures to

10、 prevent sandstorms. B.the distance between the desert and the center of Beijing is only 250 kilometers. C. more than 30 million trees have been planted in Beijing . D. the government wont plant trees any more in the next five years两人小组活动，以“沙尘暴”为话题采访Talk about sandstorms in pairs,you can ask the fol

11、lowing questions:What is a sandstorm?What are the causes of sandstorms?What should we do if sandstorms occur?How can we prevent sandstorms?Pair workInterviewPost readingHomework:1. Find more information about sandstorms on the internet or other books and write a short passage about sandstorms. 2. De

12、sign a poster that encourages people to protect the environment.Its time to take actionsLanguage points1 .To have been caught in a sandstorm was a terrible experience. 不定式的完成式作主语 e.g.: To have been bitten by a dog was not a delightful experience. be/get caught in sth. :被困在中/ 遭遇上 e.g.: we were caught

13、 in a traffic jam.昨天他们遇上了大雨Yesterday they were caught in a heavy rain.2.Sandstorms in China appear to have increased appear (tobe )+n.adj. appear to do It appears (to sb) thatHe appears (to be) very old.2 .他似乎生病了It appears that he is ill. 1. 他看上去很老 Do let your mother know all the truth. She appears

14、_ everything. A to tellB. to be told C. to be telling D. to have been toldD3.To prevent it coming nearer,. 为阻止沙漠的逼近.preventfrom doing阻止或防止干大雨使他们不能按时到达那里。The heavy rain prevented them from getting there on time.prevent(from) doing = stop (from) doing/keepfrom doing 疾病使他无法上学。His illness kept him from

15、going to school.4.Citizens wake up to an orange sky wake up to+nv-ing :意识到，发觉 wake up ： 醒来 wake sb. up 把某人叫醒 vt.e.g.直到参加了工作他才意识到学习的重要性。 He didnt wake up to the importance of study until he joined in the work. 5. Because the thick dust makes it difficult to see. feel/ find/ make/ think/ believe/ cons

16、ider it +adj./n. +to do sth.( it做形式宾语to do 不定式才是真正的宾语） e.g.他的解释使得我们对课文的理解变得容易起来。 His explanation made it easy for us to understand the text.6. When a sandstorm arrives in the city, weather experts advise people not to go out. doing sth.; sb. (not) to do sth.; that从句, 从句要采用虚拟语气, 即“should + 动词原形”, 其中should可以省略。 advise建议I advise you not to go.I advise that he go.两人小组活动，以“沙尘暴”为话题采访Talk about sandstorms in pairs,you can ask the following questions:What is a sandstorm?What are the causes of sandstorms?What should we do if sandstorms occur?How can we prevent sandstorm