北师大版高中英语选修7Unit 21 Lesson 1 Super Athletes教案1 北师大版 选修7
Unit 21 Human Biology Lesson 1 Chewing Gum Teaching Aims:
1. To improve the reading ability of the students and help them study the structure of the text and understand the text wholly.
2. To enrich the students’ knowledge about the advantages and disadvantages of chewing gum and encourage them to talk about the problem of students’chewing gum in the school .
Teaching Difficulties and Emphasis:
1. Help the students to find more advantages and disadvantages of chewing gum.
2. Help the students to carry out the discussion.
Teaching methods:
1. Task-based teaching .
2. Individual and group work ; Discussing .
Teaching Aids:
Computer and worksheets
Teaching Procedures:
Step 1: Leading -in
1.Show the picture of a NBA star (Micheal Jordan).
1) Who is the man?
2) What is the man eating?
Step 2:Reading
1. Do you like chewing gum?
2.Is it good or bad for our health?----- To chew or not to chew
3.Listen to the tape carefully and divide the text into several parts.
Part1 ( para 1 ): introduction
Part2 ( para 2-4 ): the advantages of chewing gum
Part3 ( para 5-7 ): the disadvantages of chewing gum
Part4 ( para 8 ): conclusion
4. Find the advantages and disadvantages of chewing gum in the text.
5.Find more advantages and disadvantages of chewing gum (show some pictures or videos).
6. Decide if the following statements are true or false.
1). Diet specialists seldom inform us that it is important to chew our food properly.
( F )
2).Chewing gum can not fight bad breath. ( F )
3). If you had chewed sugar-free gum regularly for two years, you would have lost up
to 5kilos. ( F )
4). If people chewed 50 times per minute for 24 minutes, 70 kilocalories were burned.
( T )
5). Chewing gum can help smokers give up their bad habit more successfully. ( T )
6). When we chew gum, it will not cause our bodies to produce digestives juices.
( F )
7). Chewing gum for long periods of time will make our stomach become tense.
( T )
8). Chewing sugar-free gum must cause the number of young people with bad teeth to
rise. ( F )
9). On balance, it would be better to chew gum. ( F )
7.Fill in the blanks with the proper words which are in the text.
On one hand, chewing gum can fight bad breath. Some dentists believe that sugar-free gum helps to stop tooth decay. Gum controls people’s appetite so it can help people to lose weight. Gum can also contain medicine. It helps smokers give up their bad habit successfully.
On the other hand, chewing gum has its negative side. Diet specialists say chewing starts the production of stomach acid and digestive juices. It will make digestion more difficult and may cause feelings of sickness or even headaches. Further, chewing gum for long periods of time may lead to stomach sickness.
On balance, we’d better forget chewing gum, eat healthy foods and never start smoking. So that we can live a healthy life.
8.Show the picture about the pollution in the Tiananmen Square on National
Days.
1). Where is it?
2). What are they doing?
9.Introduce something about the news
Step 3:Discussion
Nowadays many students like chewing gum in the school. Some students chew gum after a meal to get a good smell. However, some chew gum in the class or even when they are having a test then throw it anywhere. Do you think it right for us students to chew gum in the school? Give your reasons.
Step 4:Homework
Write an article about your discussion:
Do you think it right for us students to chew gum in the school?。
北师大版高中英语选修七Unit 21《Lesson 1 Super Athletes》教案 1
Unit 21 Lesson 1 教学设计Teaching aims:To read about the effects of chewing gum.To revise conditionalsTo practice using mixed conditionalsTeaching difficulties:some students may not remember the first，second and third conditionals well. The form of mixed conditionals may be difficult for some students to master and they may need more practice with it.Teaching Aids: computer and video rejectionTeaching procedures:Step 1: lead-in1. Show students advertisement an video about gum so as to raise their interest on chewing gum and make them think of the effects of chewing gum in daily life.2. Students work in pairs discussing the questions and require them to share their ideas with class. Discuss in pairs and answer the following questions.What do you think of chewing gum？Is it good or bad for you？Do you or your friends /family buy it？Why？What do you do after chewing it？3. Students look at the title and predict which issues may be covered in the article. Then，students work individually，reading the article quickly to find out which of their guesses were right. Step 2: read to learn1. Students divide the text into four parts，then summarize the main topic of each part.Part 1 (paragraph 1--- 1 ) IntroductionPart 2 (paragraph 2 --- 4 ) Benefits of chewing gumsPart3 (paragraph 5 --- 7 ) The negative sides of chewing gumsPart4 (paragraph 8--- 8 )Better activities than chewing gums2. Work individually，students try and fill the table with the information they remember from thefirst reading. After finishing the table，students discuss it with each other and then check answers as a class.3. Students work in pairs answering the questions. Ask them to locate the relevant parts in the text which give the answers.1. How serious is the problem of bad breath？2. What is added to sugar-free chewing gum which may help prevent tooth problems？3. According to one research project，what is one way of burning 70 kilocalories？4. What would be the effect on the stomach of constant chewing？5. What other activities are stated that are better than chewing gum？Step 3: grammar1. Students match the conditional sentences in italics in the text with the following types: zero conditional，1st conditional，2nd conditional，3rd conditional. Check students’ answers by having individuals read out the sentences and then describe them.2. Elicit an example from the class of each conditional form.Step 4: consolidationChoose the best answer.Step 5: Homework: page 80，Ex1，4。
高二英语北师大版选修七课件Unit21SectionⅠWarmupSuperAthletes
1．选词填空： circle, circular, circulate, circulation ①She paid a circular visit among her relations. ②We observed the circulation of blood in frogs. ③The children linked hands to make a circle . ④The old man devotes himself to circulating Chinese traditional culture.
as fast as athletes today. B．Doping is a huge problem in the sporting world. C．The present and future of the sporting world is being seriously
and negatively affected by doping and gene-therapy. D．Ben Johnson, Florence Griffith and Floyd Landis have all
Please match champion athletes with their achievements.
Байду номын сангаас
a．Won gold in men's 200m freestyle final.(2016) b．Won gold in the 200m individual medley.(2016) c ． His achievements as a sprinter have earned him the
•Performanceenhancing drugs are originally developed to help
2021学年高中英语Unit21Lesson1SuperAthletes课件北师大版选修7.ppt
由于它是影响力大的欺骗形式，体育界是不会容忍运动员服 用兴奋剂的。本·约翰逊如果在1988年奥运会上没有被查出服用兴 奋剂的话，今天他还可能是百米世界纪录的保持者。其他一些短 跑纪录至今依然让人感到怀疑。比如，弗洛伦斯·格丽菲斯1988年 的百米纪录。她服兴奋剂了吗？如果美国运动员玛里昂·琼斯没有 服用兴奋剂的话，她能成功地进军奥运会吗？
服用兴奋剂不仅仅是田径运动存在的问题，每个运动项目都 存在这个问题，运动员设法取得超常体育成绩而准备欺骗。当 2006年环法自行车赛的冠军、名将弗洛伊德·兰蒂斯被查出服用了 兴奋剂时，举世为之哗然。弗洛伊德·兰蒂斯做了几次站不住脚的 辩解，责怪他因伤服用的药物，但是这些都是徒劳的。他的两次 兴奋剂检测结果都呈阳性。
谈到破纪录，我们就会碰到服用提高成绩的药物问题。研制 这些药物原本是用来帮助人们解除病痛的，但误用到运动员身 上，就会使他们在竞技比赛中超乎寻常地发挥，变得更快、更 强。服用这些药叫做“服兴奋剂”。尽管服兴奋剂有助于提高成 绩，但同时也会给那些滥用兴奋剂的运动员在日后生活中带来严 重的健康问题。
④The sports world does not tolerate doping as it is a fundamental form of cheating. Ben Johnson would still be the 100 metres world record holder if he had not been caught taking drugs in the 1988 Olympics. Other records remain doubtful, like Florence Griffith's 100 metres record back in 1988. Did she take drugs? If American athlete Marion Jones hadn't taken drugs, would she have made it to the Olympics at all？
北师大版高中英语选修七Unit 21《Human Biology》1课件
Section Ⅰ
课标导航 主题导读
Warm-up & Lesson 1 Super Athletes
课前预习导学
KEQIAN YUXI DAOXUE
课堂合作探究
KETANG HEZUO TANJIU
It has been suggested that smaller brain appears to work faster,perhaps because the two sides of the brain are better connected in women.This means that little girls tend to learn to speak earlier,and that women can understand sorts of information from different sources at the same time. There are other important differences between two sexes.As white matter is the key to spatial(空间的)tasks,men know better where things are in relation to other things.
Unit 21
Human Biology
Section Ⅰ
课标导航 主题导读
Warm-up & Lesson 1 Super Athletes
课前预习导学
KEQIAN YUXI DAOXUE
课堂合作探究
KETANG HEZUO TANJIU
功能
Giving and asking for advice circulate abuse tolerate fundamental postpone concern doubtful seek in vain unite at all costs at random threat controversial treat wipe prohibit circumstance equip vote
北师大版高中英语 选修七 unit 21 Human Biology Lesson 1 Super Athletes A名师公开课精品课件 (31)
课 堂 互 动 探 究
教 学 方 案 设 计
digestive adj.消化的；和消化有关的
Some of his translations were published in English Digest.他有几篇译作发表在《英语文摘》上。 I did a little exercise to help my digestion. 我做了一点运动来帮助消化。
课 堂 互 动 探 究
教 学 方 案 设 计
He paused，waiting for her to digest the information.
他停了下来，等她慢慢领会这一信息。
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digest n．摘要；概要；文摘；汇编 digestion n．[U]消化 [C]消化能力 digestible adj.易消化的；口感好的；易理解的；可领会 的
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●教学流程设计
教 学 目 标 分 析 课 堂 互 动 探 究
教 学 方 案 设 计
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完成句子 ①我领悟了书中大部分要点。 I have in the book.
北师大版高中英语选修七Unit 21《Lesson 1 Super Athletes》课件 Language Points 2
完成句子
①我领悟了书中大部分要点。
I have
in the book.
②这位老人一直读每月新闻摘要。
The old man has been reading
.
【答案】 ①digested most of the important points
②monthly news digest
2．swap v．交换；交流 Write down five telephone numbers and swap with your partner.(P33) 写下五个电话号码并且与你的搭档交换。 People can swap their rice for wheat in the South. 在南方，人们可以拿大米换小麦。 I usually swap views with my friends online. 我通常和我的朋友在网上交流意见。
●新课导入建议 用多媒体向学生展示一段 2012 年第 30 届伦敦奥运会上 男子 100 米飞人大战，博尔特以 9 秒 63 破奥运纪录卫冕的视 频，从而引出本课时话题。(老师让 xxx 同学读一读他/她写的 短文)。
●教学流程设计
演示结束
1．digest vt.&vi.(P33)消化；吸收；领悟 You should allow a little time after a meal for the food to digest.饭后你应该留点时间让食物消化。 He paused，waiting for her to digest the information. 他停了下来，等她慢慢领会这一信息。
seek for/after 找寻；寻求 seek to do sth.试图做某事 seek out 找到；寻出 seek into 仔细检查 seek one's fortune 外出寻找发财机会；外出闯荡 seek sth.from sb.向某人请求某事
Module 7 Unit 21 Lesson 1北师大
Super Athletes
Ben Johnson 汉城奥运会以惊人 成绩打破男子百米 世界纪录并夺得金 牌
Maurice Greene 第一位同时拥有50 米、60米和100米3 项世界记的男选手。
Florence Griffith 奥运短跑三项金牌得 主，同时也是100米 及200米短跑的世界 纪录保持人
Yi Siling, the winner of the 10m air rifle event
Part II
First Reading
100 metres in 8 seconds?
1) What is the general idea? A. The athletes who took part in the first Olympic Games are not as fast as athletes today. B. Doping is a huge problem in the sporting world. C. The present and future of the sporting √ world is being seriously and negatively affected by doping and gene-therapy. D. Ben Johnson, Florence Griffith and Floyd Landis have all shocked the world by their speed.
3) Which of the following is NOT true about gene-therapy? A.It’s much harder to catch athletes who have used gene-therapy. B. Scientists have found that gene-therapy √ can damage an athlete’s liver. C. If athletes use gene-therapy, we will see world records being beaten like never before. D. Using gene-therapy to do better in sports is also cheating like taking drugs.
英语北师大版选修7Unit21Lesson1《SuperAthletes》课件
• 6. He ___ you if you ____ to see him this afternoon.
• A. might tell, went • B. might tell, are going • C. might have told, went • D. should tell, will have gone
• 3. If he missed the bus, he _____ to school on foot.
• A. would go B. went • C. would have gone D. had gone
• 4. Had I known her name, ______. • A. or does she know mine • B. she would come here • C. I would have invited her to lunch • D. she had come
1.making digestions __________________ 2. Causing feelings of __________________
3. Leading to _________ ______________ 4. Making people neglect_____________ _____________________
• I went to library yesterday. If I had went to the concert, I would have taken photos with the singers.
• He had traffic accident yesterday. If he had driven more carefully, he would have arrived home safely.
北师大版高中英语 选修七 unit 21 Human Biology Lesson 1 Super Athletes A名师公开课精品课件 (30)
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A quarter of boys and nearly 30 percent of girls were sedentary and didn't get enough exercise with girls less active than boys in every country aside from Zambia. Uruguay had the highest percentage of active boys， at 42 percent，while Zambia had the lowest，at 8 percent.Girls
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The researchers defined adequate physical activity as at least an hour of exercise outside of gym class at least five days a week.Children who spent three or more hours a day watching TV，playing computer games ， or chatting with friends － aside from time in school or time spent doing
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From Argentina to Zambia ， Regina Guthold of the World Health Organization in Geneva and her colleagues found most children aren't getting enough exercise and it made no difference if they lived in a rich or a poor country. “With regards to physical activity levels，we did not find much of a difference between poor and rich countries，”Guthold said.
北师大版高中英语选修七Unit 21Human Biology Lesson 1 Super Athletes B名师公开课精品课件(38张)
寻找；探索；追求 徒然，白费力气 随便地，随意地 不论多大代价，无论如何 由于 偶然遇见 促成；导致 沉默地，默不作声地 或多或少，大约 气喘吁吁地 (机械、场所等)在使用中
1．in vain徒然，白费力气 [教材原句] Floyd Landis made several lame excuses
in general in secret in surprise
大体上 秘密地 惊奇地
in particular
in return in turn in effect
特别地
作为报答；作为回应 反过来 实际上
②I asked her opinion, but she just asked me a question
other participants are only tested at random. 获胜者被强制性地进行检查，而其他参赛选手则只是随意地 检查。 ①She wrote several winning numbers at random. 她随便写了几个中奖号码。
②Feeling bored, we wandered through the streets in the city
点此进入
1．[句型展示]
Ben Johnson would still be the 100 metres
world record holder if he had not been caught taking
drugs in the 1988 Olympics. 1988年的奥运会上，如果本· 约翰逊没有被查出服用兴奋 剂的话，他还可能是百米赛跑世界纪录的保持者。 [典例背诵] Diana was caught taking money from her mother's purse. 戴安娜从她母亲钱包里拿钱时被当场发现。