北师大版高二选修七教案：Unit 21 period 1.docx

the first period intensive readingteaching goals 教学目标1. target language 目标语言a.重点词汇和短语interval, circulate, pump, digest, mineral, swap, hearing, pulse, performance-enhancing, supreme, abuse, tolerate, fundamental, seek, annual, lame, compulsory, controversial, oppose, dash, marathon, contradict, violate, take part in, due to, catch sb. doing, at random, have their genes changed, at all costsb.重点句式l many contemporary amateur athletes would have broken world records if they had taken part in the first olympic games.l ben johnson would still be the 100 metres world holder if he had not been caught taking drugs in the 1988 olympics.l if current olympic champion, marion jones, took such drugs, she would probably have broken that world record more than once.l if gene-therapy were used now, it would be almost impossible to find out.l if a generation of sports stars with enhanced genes were created, it would contradict the whole spirit of sport.2. ability goals能力目标enable the students to talk about the disadvantages of doping. 3. learning ability goals学能目标 help the students learn how to talk about the disadvantages of doping.teaching important difficult points教学重难点help the students to learn about disadvantages of doping.teaching methods教学方法skimming, scanning, asking and answering activity, individual, pair or group work, discussion and cooperative learning teaching aids教具准备the multimedia and a tape recorder teaching procedures & ways教学过程与教学方式step warm-upthis part focuses on words related to parts of humans body and helps students know the importance of forming the good habits in life. first, show students a diagram of the body to attract students attention and ask them to focus on this diagram. this picture will make the students have a good command of these words.t: we know this is a picture of parts of our body, and we are familiar with the parts of the body in chinese, but can you say these parts in english? if you can, please tell us these words and then label/describe the parts of the body.s1: let me have a try. this is the brain, through which we can think and memorize something. it is inside our head and it can control the way we think, feel and move.t: well done. its the brainan organ of our body that controls our thought, memory and feeling, consisting of a mass of soft grey matter inside. it is very important to us. by the way, how many hours do you sleep per night and have your brain rest? under 6 hours, about 7-8 hours or more than 9 hours? do you have your brain get enough rest?s: less than 7 hours.t: oh, that is not enough. you are believed to be aged about seventeen years old, and you need enough sleep for about at least 8 hours, you cant stay up late into the night every night. through sleeping, you can relax yourself and have your brain get enough rest. rememberenough sleep can make you study better and more efficiently.s1: i know, thank you. s2: they are lungs. we can use them to breathe.t: yes, they are lungsthe two breathing-organs in the chest that you breathe with. and we know smoking can cause lung cancer. so if your father smokes or your relatives smoke, talk them into giving up smoking.s3: its the liver.t: yes, its the liver and it is a large organ in our body which can produce bile and clean our blood.s4: its the stomach. we digest something that we have in it.t: right. its the stomach, the bag-like organ in our body into which food passes when it is swallowed and in which the first part of digestion occurs. we know its unwise for us to swim on a full stomach or eat too much.make a list of these words on the chalkboard: brain, lungs, liver, stomach, eye, heart, bone, knee, skin, spine, wrist, fingers, muscle, ankle, kidneyst: all these parts are very important to us human; we should protect them and look after them well. next, here are some questions for you: how can we live a healthy life? how often do you clean your teeth? how often do you do physical exercise? how often do you eat sweets or chocolate? how many pieces of fresh fruit do you eat per day? please look at exercise 4. on page 33. we are going to do this part.ask some students to answer these questions and check the answers with the whole class.t: in order to be healthy, we should form good habits, such as brushing our teeth, eating more fruits and fewer sweets and doing physical exercise. only in this way can we lead a healthy and happy life. t: next, we are going to listen to the tape and guess which parts of the body are being described. which words help you decide? find these key words. check these answers with the whole class.step pre-readingtask 1 preparationt: i asked you to research on the internet and get the information about some famous athletes in the world. so what champion athletes can you name? what were their achievements? the teacher can play some videos for students to watch and encourage them to talk about some information about the athletes they have prepared separately so that students can participate fully in it.s1: i would like to say something about liu xiang. liu xiang, a 22-year-old shanghai born star, is the first ever male chinese athlete to win a gold medal in olympic track and field history. because of this, liu xiang has been feted throughout this country of one billion inhabitants. during the course of nearly 16 months, liu xiang became olympic 110m hurdles champion, equaling the world record in athens.s2: i will tell you something about michael johnson. michael johnson is quite simply one of the greatest athletes on the planet, and one of the best ever. his place in history was sealed at the atlanta olympics, during which he won an unprecedented 200 metres-400 meters sprint double. no athlete has ever won both events at olympic level, let alone achieving the feat at the same games. s3: id like to say something about ding junhui. on april, 3 in beijing, 18-year- old ding junhui surprised the snooker world by winning the 2005 china open with a 9-5 victory over the seven-time embassy world champion stephen hendry. that night, over 100 million people watched the game on tv. ding junhui is the first player to win a ranked tournament as a wildcard player and the second youngest ever to win a ranking title just 9 days older than the world number one player ronnie osullivan. seeing dings outstanding performance, osullivan proclaimed him as a future world champion.t: you have done good jobs. please read the article on page 34 as quickly as you can and get the general idea of it.the students are given a couple of minutes to read this article and then check the answers with the whole class.s: doping is a huge problem in the sports world.t: quite right. whatre your attitudes towards doping? are you for or against it?students are welcome to express their opinions about this question. any answer is acceptable.s: i think if some athletes use drugs in a match, it is unfair to the others and its unfair competition for the others. people cannot accept any cheat, including the cheat in the sports world. we all know that only fair competition can encourage athletes try their best to be a real champion.s: we must remember the olympic spiritthe spirit of competition which emphasizes taking part rather than winning.s: its wrong of the athletes to take drugs in order to be “winners”. experts said that these illegal drugs which give people pleasant or excited feelings can affect peoples nervous system and cause serious health problems for those athletes who abuse them. it does harm to both the other athletes and themselves.task 2 reading strategyread the article and answer the questions on page 34. this task needs scanning and skimming skills to check students understanding of some detailed information. students are given about five minutes to skim the article and then answer these questions. the teacher can organize students into pairs and make sure that each individual has a chance to speak. five minutes later, check the answers with the whole class.sample answers:1. because athletic performances have continually improved with the development of science and technology.2. better equipment, training and diet.3. doping refers to a kind of narcotic or stimulant drug given to an athlete who wants to achieve beyond their natural limits. an athlete who takes drugs can perform much better in a race or sport than before and create better achievements. but it is illegal because its a kind of cheating behavior and its unfair to the other athletes.4. ben johnson who broke the 100 meters world record in the 1988 olympics was caught taking drugs. there is some doubt whether florence griffith set a 100 meters world record by taking drugs.5. because new drugs are developed all the time while drug tests for sporting events are based on the old drugs. in order not to be found, athletes often take new drugs that are not familiar to people.6. athletes who have their genes changed might get supreme achievements, for example, they will be able to do the 100 meters dash in just 8 seconds or the marathon in less than two hours.7. the spirit of competition which emphasizes taking part rather than winning.step readingt: ok. after reading the article, do you find anything difficult to understand?this part helps students to comprehend the meanings of some language points in the article. the teacher will explain some important language points to students.notes to the article:1. many contemporary amateur athletes would have broken world records if they had taken part in the first olympic games. ( page 34, lines 1-2 )explanation: in this sentence, the phrase” take part in” is a set phrase meaning “to have a share or role in sth. with others; participate in sth.” and it is usually used. how many countries will be taking part in the world cup?at college i took an active part in student politics.synonyms of “take part in”:join: to be a member of an organization, a company, a club, etc.when did you join the labor party?join in (sth. / doing sth.): take part in (an activity)they all joined in singing the christmas carols.attend: go regularly to a place; be present atthey had a quiet wedding only a few friends attended it. 2. if records fall, it is usually due to better equipment, training and diet. ( page 34, line5 )explanation: here “due to sb./sth.” is a set phrase, which means “caused by sb./sth.; because of sb./sth”. pay attention to the following sentences, in which the phrase “due to” is used.the teams success was largely due to her efforts.the companys problems are due to a mixture of bad luck and poor management.some people think that it is more correct to use “owing to” to mean “because of” after a verb or at the beginning of a clause, as “due” is an adjective. pay attention to the following sentences, in which the phrase “due to do sth. (not before nouns)” is used, meaning “arranged or expected”rose is due to start school in january.pay attention to the different usage of the phrase “due to sb.” in the following sentences, in which it means “owed to sb as a debt, because it is their right or because they have done sth. to deserve it”.have they been paid the money that is due to them?our thanks are due to the whole team.3. ben johnson would still be the 100 meters world holder if he had not been caught taking drugs in the 1988 olympics. ( page 34, lines 19-20 )explanation: here “catch sb doing” is a phrasal verb, meaning “find or discover sb. doing sth, especially sth wrong”. we usually use “doing” to modify “sb”.i caught a boy stealing apples in the garden.i caught her smoking in the bathroom.we can also use an adverb or a preposition to modify “sb”.he was caught with bomb-making equipment in his home.mark walked in and caught them in the act of doing something wrong.4. it is compulsory for winners to be tested but other participants are only tested at random. ( page 34, lines 31-33 )explanation: here “at random” means “without thinking or deciding in advance what is going to happen”. she opened the book at random and started reading.the terrorists fired into the crowd at random.5. in the future, athletes who have their genes changed might be able to do the 100 meters dash in just 8 seconds or the marathon in less than two hours. ( page 34, lines 40-42 )explanation: the word “have” used with “a noun + past participle” means “cause sth. to be done” why dont you have your hair cut?theyre going to have their house painted.pay attention to the following sentences, in which “have + a noun + past participle” is used referring to “suffer the consequences of another persons action”he had his pocket picked.they have had their requests refused.6. the olympic spiritthe spirit of competition which emphasizes taking part rather than winninghas been violated by the desire to succeed at all costs. ( page 34, lines