高中英语 Unit 21 lesson 3教学课件 北师大版选修7 课件.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,Take a method and try it.If it fails,admit it frankly,and try another.But by all means,try something.,找到方法去尝试。如果失败了，坦然接受，尝试另外一种方法。但是无论如何，要去尝试。,(Franklin D.Roosevelt),北师大版（新课标）选修,7 Unit 21 lesson 3,Epidemics throughout history,Unit 21 Human Biology,a kind of disease which spread quickly among many people in the same place for a time.,epidemic,Which of these diseases can be epidemic?,AIDS,cancer,Bird flu,heart disease,SARS,stomachache,epidemic,a kind of disease,which spread quickly,among many people,in the same place,for a time.,Epidemics,throughout history,What is the writers purpose of writing the article?,To introduce some experiments about how to,treat the epidemics,B.To introduce several epidemics in the history and hope to foresee and prevent them in the future,To introduce the causes of different epidemics in,the history,D.To introduce how the countries fight against epidemics,Fast Reading,What kind of article is it?,A.Narrative writing,B.Persuasive writing,C.Expository writing,D.Practical,writing,Fast Reading,Try to match the headings with each paragraph,Para 1,Para 2,Para 3,Para 4,Para 5,Para 6,Para 7,Para 8,Para 9,Para 10,The Black Death,The Spanish Flu,Justinian Plague,Introduction,SARS,SARS,Summary,SARS,SARS,SARS,Introduction,Para 2,Para 3,Para 4,Para 5-9,Summary,Justinian Plague,The Black Death,The Spanish Flu,SARS,Expository essay,sandwich,SUMMARY,Part 2:,Part 3:,Part 4,The SARS epidemic began,in_;with,_in Guangdong Province;,_were reported in over _ countries across _ different continents and _ people died.,1.Generally,SARS _ include a high fever,_,and _.However,as the illness progresses,most patients eventually _,pneumonia,.,2.The SARS virus _ mainly by close _,either through the air or_.,there were no _ _ or _ to treat it and doctors were not sure how to _ it either.Since most people had no natural _ against the disease,it was also _ to the doctors and nurses treating SARS patients.,1.scientists have been doing _ on treatments to _ any future outbreaks.,2.Modern _ technology and _ research techniques allow health experts all over the world to _,_ knowledge,and _ together without _ to help put SARS behind us.,Part 5,Part 1:,Time,The SARS epidemic began in_.,Cause,with _in Guangdong Province,a lung disease,2002,Part 1-Introduction,The number of the people infected and died,_were reported in over _ countries,across_different,continents and _ people died.,8000 cases,774,30,5,Part 2-The number of the people infected and died;Area,Part 3,Description of the virus,1.,Generally,SARS _ include a high fever,_,and _.However,as the illness progresses,most patients eventually _,pneumonia,.,2.,The SARS virus _ mainly by close _,either through the air or_.,symptoms,body aches,headaches,develop,spreads,human contact,surface-touching,Part 4,Treatment,there were no _ _ or _ to treat it and doctors were not sure how to _ it either.Since most people had no natural _ against the disease,it was also _ to the doctors and nurses treating SARS patients.,prescription,tablets,prevent,defences,harmful,drugs,Part 5,Measures,1.scientists have been doing _ on treatments to _ any future outbreaks.,2.Modern _ technology and _ research techniques allow health experts all over the world to _,_ knowledge,and _ together without _ to help put SARS behind us.,trials,prohibit,communication,medical,unite,share,work,pause,Part 2:,Part 3:,Part 4,The SARS epidemic began in 2002 with a lung disease in Guangdong Province,8000 cases were reported in over 30 countries across five different continents and 774 people died.,Generally,SARS symptoms include a high fever,body aches,and headaches.However,as the illness progresses,most patients eventually develop pneumonia.,The SARS virus spreads mainly by close human contact,either through the air or surface-touching.,there were no prescription drugs or tablets to treat it and doctors were not sure how to prevent it either.Since most people had no natural,defences,against the disease,it was also harmful to the doctors and nurses treating SARS patients.,1.scientists have been doing trials on treatments to prohibit any future outbreaks.,2.Modern communication technology and medical research techniques allow health experts all over the world to unite,share knowledge,and work together without pause to help put SARS behind us.,Part 5,Part 1:,Part 1:Introduction,Part 2:,Part 3:,Part 4,Part 5:Summary,SARS,name,time,area,cause,treatment,measures,the number of the people died and infected,description of virus,(symptom;transmission),Part1:time;cause,Part 2:number;area,Part 3:description of virus,Part 4:treatment,Part 5:measures,Ebola,Treatment:,Theres no cure for Ebola,though researchers are working on it.,Theres no,vaccine,（疫苗）,to prevent Ebola.,3.Treatment includes an experimental serum(,血清,)that destroys infected cells.,Time:,February 2014,Area:,West Africa,The number of People infected and died,1.7373 died,2.More,thant,20,000 people infected,Description of the virus:,1.hide for up to 21 days,2.a death rate,（死亡率）,of up to 90 percent.,3.a flat red area covered with small bumps,（疙瘩）,4.Human-to-human transmission of the virus occurs through direct contact with infected people,or their body fluids,（体液）,Cause:,The Ebola virus first appeared during two 1976 outbreaks in Africa.,Scientists believe fruit bats,（狐蝠）,are the cause of infection,Measure:,T,he World Health,Organisation,appealed,（呼吁）,all the other counties to give necessary medical aids to West African government.,2.The Chinese medical team arrived in Africa in September,2014 to provide medical care to local patients and fight the virus together.,SARS,Name:,Ebola,Part 2:,Part 3:,Part 4,Part 5,Part 1:,Time:,February 2014,The number of People infected and died,1.7373 died,2.More than 20,000 people infected,Area:,West Africa,Cause:,The Ebola virus first appeared during two 1976 outbreaks in Africa.,Scientists believe fruit bats,（狐蝠）,are the cause of infection,Description of the virus:,1.hide for up to 21 days,2.a death rate,（死亡率）,of up to 90 percent.,3.a flat red area covered with small bumps,（疙瘩）,4.Human-to-human transmission of the virus occurs through direct contact with infected people,or their body fluids,（体液）,Treatment:,Theres no cure for Ebola,though researchers are working on it.,Theres no,vaccine,（疫苗）,to prevent Ebola.,3.Treatment includes an experimental serum(,血清,)that destroys infected cells.,Measures:,T,he World Health,Organisation,appealed,（呼吁）,all the other counties to give necessary medical aids to West African government.,2.The Chinese medical team arrived in Africa in September,2014 to provide medical care to local patients and fight the virus together.,Ebola,Try to design a poster to introduce Ebola,.,Homework,