北师大版高二选修七教案：Unit 21 period 4.docx

the fourth period extensive reading teaching goals 教学目标1.target language 目标语言a. 重点词汇和短语cancer, wipe, urban, rebuild, trial, prohibit, unite, pause, acute, statistics, symptom, routine, press, parallel, tissue, adaptation, foresee, mourn, carrier, prescription, tablet, underline, thorough, systematic, teamwork, faith, pill，stop sth. in its tracks, on the rise, bubonic plagueb. 重点句式bacteria and viruses have been around since the beginning of life on earth and many of todays diseases have existed as long as humans have.epidemics are described in historical accounts as early as 430 bc and one of the earliest on record is justinians plague.one epidemic that we havent forgotten yet is the sars epidemic of 2002/2003.another epidemic that started and spread in similar conditions was the great flu epidemic of 1918.2.ability goals能力目标enable the students to sequence the information.3.learning ability goals学能目标 help the students learn how to sequence the information.teaching important & difficult points教学重点learn how to sequence the information.teaching methods教学方法individual, pair or group work, discussion and cooperative learning teaching aids教具准备a projector, some slides and handouts teaching procedures & ways教学过程与教学方式step revision and lead-in check the homework.t: in the last period, we have learned how to ask for advice and give sb. advice. and you were asked to make up two dialogues. now we are going to check these two dialogues together.ask some pairs to make up their dialogues in the front of the classroom.t: so much for these. in this period, we will read an article about epidemics. you know an epidemic is a kind of disease spreading very quickly among many people in the same place for a time. which of these diseases below can be epidemics?aids (), cancer, headache, flu (), heart disease, stomachache, tb ()t: right. they are epidemics. for example, aids, it is an illness which attacks the bodys ability to resist infection usually causes death. in addition to these four epidemics mentioned here, there are other epidemics in the world, such as the bubonic plague and sars, etc. the bubonic plague is known as “the black death”. the mortality rate was 30-75%. the symptoms were enlarged and inflamed lymph nodes (around arm pits, neck and groin). victims were subject to headaches, nausea, aching joints, fever of 101-105 degrees, vomiting, and a general feeling of illness. symptoms took from 1-7 days to appear.for more information, students can visit the following website: t: we should remember the outbreak of the sars epidemic in 2003. it starts with an abnormal lung disease in guangdong and spread worldwide after dr liu jianjun came to hong kong. he stayed at a hotel in which the disease spread to four more people. when these people returned home, they spread the disease to canada, vietnam and singapore. because it was completely new to physicians, no one really knew much about it. even doctors werent sure how to treat it and control it. it was very terrible.ask students to research on the internet to find some more detailed information about sars.t: now lets look at the sentences below and then tell if the following sentences are true () or false ().the teacher will check the answers with the whole class.step reading task 1 reading strategiesin this part, the teacher guides students to pay particular attention to the reading strategies.t: next, one reading strategy will be introduced, which is considered as one of the basic reading skillsand often used by us. it is called “sequencing of information”, and let us read this part. read the text with gaps to get the general idea and see how it develops. read the sentences before and after the gaps to give you an idea of what the beginning or end of the missing paragraph might refer to. read the missing paragraph and look for these references. if a paragraph doesnt seem to fit, you may have made a mistake, so carefully reread each paragraph.t: we will go through this article and use the strategy to match the five paragraphs (a-e) with gaps 2, 4, 7 and 9 in the article.answers: 1 e; 4c; 7a; 9b; 11d task 2 synonymstask 2 helps students to comprehend the meanings of the words from the context and match them with correct definitionshere we use synonyms.t: synonyms refer to words or phrases with the same meaning as another, in the same language, though perhaps with a different style, or technical use. for example, “effects” and “results” in this passage are synonyms. lets look at ex.6 on page 39 and do the matching exercise.answers:1f; 2h; 3a; 4b; 5j; 6d; 7e; 8i; 9g; 10c.t: please turn to page 84 and do ex.2 and ex.4 on page 85.check the answers with the whole class.step speakingthis part is designed for students to practice their spoken english with a topic closely related to epidemics.t: for many years people suffered from all kinds of diseases and fought against them. we have made great progress in this field, but there are still some diseases that we are not sure how to treat them. scientists and doctors are trying their best to study these diseases, and one day, maybe these diseases will be cured. which of these things do you think will happen within the next 25 years? which will not happen? why?ask students to use their imagination and think of these possibilities and then encourage them to have a discussion on the topic and express their opinions. have students form small groups or pairs to exchange their opinions and make sure everyone has a chance to speak. the purpose of this is to attract students interest and inspire their imagination.step practicet: please turn to page 86, there is an article about health and the myth of ideal body shapes. you are given four minutes to read this article to get the main idea of this articleafter the students have finished reading the whole article, the teacher asks them what they think the main idea is and gets some students to report their responses back to the whole class.s1: being too thin can be as dangerous as being too fat.s2: to lead a healthy and active life, you need a healthy and active body.s3: being healthy doesnt mean having