【精品】高中英语（人教大纲）第二册上：Unit7 Living with disease(第一课时)

Unit 7 Living With diseaseIBrief Statements Based on the UnitThis unit mainly talks about deadly diseases and attitudes towards AIDS，cancers，etcA11 the activities，including Warming up，Listening，speaking，reading and writing，center on this topicThrough this topic，the students not only get more information about diseases，but also learn how to keep a right and positive attitude towards diseases and people with diseasesIn addition，the students can 1earn some useful language points through the materials provided in each part，especially a lot of words and phrases，which are very helpful for the students to build up vocabulary about diseasesThe Grammar-the Subjunctive Mood is also importantThe given materials and exercises give the students an opportunity to learn grammar by using itIt helps the students learn to talk about things tlat are not certain to happen as well as imaginary or unreal events and situationsAll of the activities are helpful for the students to improve their knowledge about 1anguage and their skills to use languageTeaching Goals1.Talk about deadly diseases and attitudes towards AIDS，cancers，etc2.Practise talking about imaginary situations3.Practise supporting and challenging an opinion4.Learn to use the Subjunctive M00d(1)：lf 1 were you，I Wish I could5.Write a personal narrativeTeaching Time：Four periodsBackground Information1Health Officials Struggle to Understand SARS Sever acute respiratory syndrome (SARS) has terrified the worldThe question on everybodys mind is whether SARS will become a global epidemicResearchers worldwide have galvanized to combat SARSThe challenge for publichealth is to determine the nature and potential of any viral threat and to frame a battle plan“We are in an evolutionary stage of this epidemic，”said Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases in Bethesda，Maryland. “It could plateau，go up and down，disappear of explodeThis virus is highly virulent，potentially lethal and highly transmissible-it has the potential to cause a really bad epidemic”A Deadly CombinationSARS is a socalled hybrid virusthe kind that always triggers a red alertTraditionally a virus affects a single speciesBut sometimes two viruses combine their genetic material and form a new virus that“ jumps” to another species altogetherHybrids are dangerous because the body has never encountered them before，and the immune system is unprepared“From studying the sequence we see that the SARS virus is derived from a mouse coronavirus and an avian coronavirus，”said Michael Lai，a pioneer in coronavirus genetics at the University of Southern California in Los AngelesIf the virus exists in a wild widespread host-like the West Nile virus carried by mosquitoesthen SARS could be a perennia11y recurring problem, according to LaiIf the host is a domestic animal一like the chicken responsible for the Avian F1u virus of 1997-then the source of the virus could be eliminatedThe Avian Flu effectively stopped after the Hong Kong government ordered the slaughter of chickens in the areaLai suspects that the SARS virus lurks in a wild animals. “It probably doesnt bother domestic animals or we would have come across it before，”he said1f people are the only carriers of SARS，“honest reporting of SARS cases and stringent quarantines could stop the virus in its tracks ,”Lai saidKnowing a Virus，Predicting an Epidemic“Making a vaccine could be quite straightforward，if it is needed。”Lai saidVaccines already exist for swine and chicken coronaviruses. But it isnt easy to gauge whether SARS，or any viruscan trigger an epidemic“Weve been working with influenza for over 50 years and it can sti1l evade our best attempts”“In many cases of the influenza virus we dont understand the molecular properties that cause high mortality，”said Nancy Cox， chief of the influenza branch at the CDC“Outbreaks are like wildfires，”Morse said“Some fires smolder and are easily extinguishedOthers rage out of control，destroying everything in their pathThe WHO and the CDC are like the fire department and they need to investigate all outbreaks because you never know which way they could go”Morse points out our long history with influenzaSARS is only a few months oldTracking and containing viruses，and predicting what they will do，Morse said，“It is as much an evolving science as an evolving art”2Fight Continues Against HIVAIDSA picture，a calendar or even a balloon may be the best way for millions of people living in Chinas vast country areas to learn about AIDS，one of the biggest threats to public health in the world todayChina has decided to use userfriendly methods including exhibitions, VCDs and TV programmes to spread knowledge of the disease across the nation to try to keep it in checkEducating people nationwide about AIDS is the top priority(优先权)to preventthe disease from getting out of handThe farmers wil1 be given knowledge in the easiest way that they can understandA recent survey from the commission(调查团)of more than 7 OOO people in Chinashowed that nearly 20 percent of them had never heard of AIDS beforeJust over 71 percent said they knew AIDS was highly infectious(传染的),but most of them had no clear idea of how the disease could be spreadJust over 62 percent said they knew they could do things in advance to prevent them catching AIDS but they didnt know what these measures wereThe monthlong survey，carried out last December，talked to people in seven counties and cities across China including both developed coastal areas and the lessdeveloped inland areasThe interviewees changed from 15 to 49 years old，and country residents were about 63 of the total surveyedChinese residents，especially those in the country，have very little knowledge about what AIDS is all about，not to mention prevention and treatmentBy the end of last year, there were 22 517 known HIVAIDS cases in ChinaHowever，more than 6000000 people in China have been infectedSince 1985，China has discovered 880 patients with AIDS一466 of them have diedSharing needles，prostitution(卖淫)and contaminated blood transfusions are major ways for HIV to spreadA lack of education has been the biggest difficulty against nationwide efforts to prevent AIDS，especially in the countrysideThe First PeriodTeaching Aims：1Learn and master the following：(1)Words：virus，via，mosquito，prevention, persuade(2)Everyday English：aSupporting an opinionI think that，becauseFirstOne reason is thatFor example，If wethey were towethey couldbChallenging an opinionPerhapsbut what ifabout?Have you thought about?What makes you think that?could you please explain?If 1 were you, 1 would2Train the students skill to use languageTeaching Important P0ints：1Master the use of the following words and phrases：via，persuade，try to persuade2Train the students listening and speaking abilitiesTeaching Difficult P0ints：1How to help the students understand the listening material exactly2How to help the students finish the task of speakingTeaching Methods：1A quiz to check the students knowledge about AIDS2Listeningand-answering activity to check the students understanding of the listening material.3Oral practice to train the students speaking ability4Individual，pair or group work to make every student work in classTeaching Aids：1a tape recorder2a projector3the blackboardTeaching Procedures：Step I Greetings and LeadinT：Good morningafternoon, everyone.Ss：Good morningafternoon, teacher,T：Sit down，pleaseWe often see programmes on TV and read stories in newspapers and magazines about persons who fight against diseasesWhat do you think of them?Ss：They are unlucky but greatT：Who do you think so? Li Ying，give us your opinionS：They are unlucky because the life is hard for them with diseasesand they may die earlier if they get some serious or even deadly diseaseThey are great because they have courage to fight against the diseases and sti11 try to make their life meaningfu1T：Very good speechSit down，please. How many kinds of deadly diseases do you know?Ss：AIDS，cancersT：YesAIDS and cancers are two kinds of serious diseasesToday，we are going to 1earn Unit 7 Living with disease(Bb：Unit 7 Living with disease)This unit will help us know more about diseases and people living with diseaseFirst，lets learn some new words in the first periodLook at the screen(Teacher shows the screen and then deals with the new words)deadlydedlI adjinfectInfektvttransmit/traenzmIt/ vtrouteru:tn.donationduneInn.preventionprIvennn.cocainekukeInn.imaginaryImaed3InrIadj.virusvaIrsn.viavaIprepmosquitomski：tunstacysteIsI /persuadepsweId vt.heroinheruInn.(Bb：via，persuadetry to persuade)Step II Warming upT：As we a11 know，AIDS is a kind of deadly diseaseThe government has paid special attention to its prevention and treatmentAnd some ways to spread the knowledge about AIDS have been used across the countryHow much do you know about AIDS? Now，open your books on Page 49. Here is an AIDS Quiz for you to check your knowledge about AIDSFirst finish it individually。Then Ill provide the right answers for youYou can begin now(A few minutes later，teacher shows the following on the screen and checksthe answers with the whole class)AIDS QUIZDecide which of these statements are true and which are falseTick thecorrect boxTrue False1.Only bad people get AIDS. 2.I can become infected with HIV by swimming in a pool，sitting in a bath， holding hands or kissing someone with HIV 3.In 2002，there were 42 million people living with AIDS in the world 4.People who have not infected drugs do not need to get tested for HIV 5.1f I had HIV，I would know because I would feel sick 6.HIV / AIDS is incurable 7.People who have H1V look different from everyone else. 8.It is safe to be friends with people who are living with A1DS T：Wel1，now look at the pictures below the AIDS QUIZWhat information do they tell us about AIDS? Liu Yang, you try，pleaseS：The pictures tell US that the AIDS can not be transmitted via the followingroutes；cups，glasses，toilet seat，swimming poo1s, mosquitoes or blood donationT：How do you know about that?S：That has been shown by medical studiesT：Well doneThank youSit down, pleaseStep ListeningT：Next，1ets come to the listening partThe listening material will tell usabout a disease detective at the Centre for Disease control and PreventionNow，please turn to Page 50Lets 1ook at the instruction and the questions in Part 1 firstThen Ill play the tapeAt the end，Ill ask some of you to answer the questions and well check them togetherAre you clear about that?Ss：Yes(Teacher goes through the instruction and questions firstThen play the tapeFinally check the answersAfter that, teacher asks the students to doPart 2)T：Well，now please listen to the tape once again and take some notes of what you hearThen use your notes to tell your partner about how stacy works，how she feels about her job，and what advice she gives. Are you clear about that ?Ss：Yes。T：And if you were a disease detective. What would you do to learn more about a new disease ? Talk about it with your partner at the endDo you remember?Ss：YesT：OKNow, please listen carefullyRemember to take notes(The students listen and make notes first. Then talk about the questions with their partnersAt the end，teacher may asks some students to report for the rest of the class)(Bb：a disease detectivethe Centre for Disease control and Prevention)Step SpeakingT：At the beginning of the class，we talked about some deadly diseases, and we also had a quiz on AIDSWe know AIDS is not only one of the deadly diseases but also a most serious social problem todayCould you please explain why? Guo Li，you try, pleaseS：One reason is that it is incurable，another is that people know little about health care, prevention and educationT：Well doneBesides AIDS there are some other most serious social problems such as drugs，smoking and drinkingWhich do you think is the most serious one? Now lets come to the speaking partChoose one of the problems listed below or think of an other serious problemPrepare a role card on which you write down reasons why you think your problem is the most seriousUse the role card in the group discussion and try to persuade the other group members that your problem is the most serious oneAre you clear?Ss：YesT：And Ill show you some useful expressions on the screen to help you with your discussion(Teacher shows the screen)Supporting an opinionI think that，becauseFirstOne reason is thatFor example，If wethey were