2020年北师大版高中英语选修7课件Unit20

1、Unit 21 Human Biology,How to Add 5 Years to Your Life Half an hour of exercise a day can add an extra five years to your life，a groundbreaking(开创性的) research has revealed.Health experts said that walking or cycling gently has big long-term benefits.According to the World Health Organization，research carried out in Britain and Denmark shows that gentle workouts(锻炼) and even housework every day can boost life spans by as much as five years.,话题导入,The news will provide encouragement for 。

2、Unit 19 Language,The Road to Modern English At the end of the 16th century，about five to seven million people spoke English.Nearly all of them lived in England.In the next century，people from England started moving to other parts of the world，so English began to be spoken in many other countries.,话题导入,All languages change when cultures communicate with one another.The English spoken between about AD 450 and 1150 was very different from the English spoken today.Actually，it was based more 。

3、Unit 19 Language,基础自测,内容索引,要点探究,达标检测,课文预读,Period Four Communication Workshop，Language Awareness 4，Culture Corner & Bulletin Board,基础自测,.重点单词 1. n.申请人v.申请；应用 2. n.证书；证明 3. n.能力adj.有能力的，足以胜任的 4. n.毕业证书 5. vt.登记 6. n.候选人,applicant apply,certificate,competence competent,diploma,register,candidate,7. n.图解；图表 8. n.地球adj.全球的 9. vt.束紧 10. 。

4、Unit 21 Human Biology,内容索引,单元写作A discursive essay,单元语法Conditional revision mixed conditionals & Modality,Period Five Grammar & Writing,单元语法 Conditional revision mixed conditionals & Modality,语法感知,语法导学,.用所给词的正确形式填空 1.If you had posted the letter，Joan (receive) it last Monday. 2.What would you say or do if someone (call) you a fool? 3.If he (not，be) ill，he would have done something to help us. 4.If you had stud。

5、Unit 21 Human Biology,基础自测,内容索引,要点探究,达标检测,课文预读,Period Four Communication Workshop，Language Awareness 6，Culture Corner & Bulletin Board,基础自测,.重点单词 1. adj.每周一次的 2. adj.临时的；短暂的 3. vt.使丧失；抢劫n.强盗；盗贼 4. vi.&vt.下降；减少；衰退；拒绝n.减少；下降；衰退 5. n.最低；最小 6. n.团体；公共机构,weekly,temporary,rob robber,decline,minimum,institution,7. adv.无条件地n.条件 8. vt.使有准备；装备，配备 9. n.商行，公司 10。

6、Unit 21 Human Biology,基础自测,内容索引,要点探究,达标检测,课文预读,Period Three Lesson 3 Epidemics Explained,基础自测,.重点单词 1. adj.城市的 2. vt.重建 3. n.试验；试用；审判 4. vt.禁止n.禁止；禁令 5. vt.联合；团结；统一 6. n.停顿；暂停 7. n.统计资料；统计数字,urban,rebuild,trial,prohibit prohibition,unite,pause,statistics,8. n.症状 9. n.常规；惯例 10. n.新闻界；报界vt.压；按；紧握；逼迫 11. n.相似之处；平行线 12. n.变化；变种 13.。

7、Unit 19 Language,基础自测,内容索引,要点探究,达标检测,Period Two Lesson 2 Varieties of English,基础自测,.重点单词 1. n.老兄，老弟，伙计 2. n.奶油；油 3. n.剃刀 4. n.小册子 5. n.出租汽车 6. n.亲戚，亲属,mate,cream,razor,brochure,cab,relative,.重点短语 1. 学会 2. 很久，很长时间 3. 继续 4. 离开 5. 独立地；独自地 6. 遵守，信守；坚持,catch on,for ages,go on with,go off,on ones own,keep to,.重点句式 1.the比。

8、,Unit 20 New Frontiers,Men love to wonder ,and that is the seed of our science. Emerson 人总是爱异想天开，这就是我们科学的种子。 爱默生,单元核心素养：思维品质,Artificial intelligence increasingly touches our livesfrom driverless cars to smart phones.Dennis Bonilla，executive dean of information systems and technology at the University of Phoenix，told us that artificial intelligence gets into classrooms and impacts on how students learn.,话题导入,For example，in classes where students see the te。

9、,Unit 20 New Frontiers,PART 1,基础自测,PART 2,课文预读,PART 4,达标检测,Communication Workshop，Language Awareness 5， Culture Corner & Bulletin Board,PART 3,互动探究,PART 1,基础自测,默写练习(一),.写出下列单词的汉语意思(共12小题；每小题2分，满分24分) 1.ancestor n. _ 2.boundary n. _ 3.barrier n. _ 4.phenomenon n. _ 5.primitive adj. _ 6.headline n. _ 7.spin vi. _ 8.overhead adj. _ 9.sneeze vi. _ 10.sniff v. _,查看答案,祖先；祖宗,界线；边界,障碍；屏障,现象,原始的,大标题,快速旋转,头顶上的,。

10、Unit 20 New Frontiers,基础自测,内容索引,要点探究,达标检测,课文预读,Period Four Communication Workshop，Language Awareness 5，Culture Corner & Bulletin Board,基础自测,.重点单词 1. n.探测；探险v.探测；探险；探索 2. n.小圆点 3. n.祖先；祖宗 4. adv.向外地adv.向上地 5. n.界线；边界v.跳跃；限制,exploration,explore,dot,ancestor,outwards upwards,boundary bound,6. vi.逐渐变弱 7. n.障碍；屏障 8. n.现象n.(pl.)现象 9. adj.原始的 10. 。

11、Unit 20 New Frontiers,Scientific Breakthroughs in the 21st Century It is predicted that there will be 5 scientific breakthroughs in the 21st century. Well know where we came from.Why does the universe exist？To put it another way，why is there something instead of nothing？Since the 1920s，scientists have known the universe is expanding，which means it must have started at a definite time in the past.We will have a better understanding of how matter behaves at the extremely high temperatures and。

12、Unit 20 New Frontiers,基础自测,内容索引,要点探究,达标检测,Period Two Lesson 2 Artificial Intelligence,基础自测,.重点单词 1. vt.主持(电视或广播节目)；呈现n.存在；到场；出席 2. n.类别；类型 3. adj.自主的；自治的 4. n.电脑程序编制员n.程序；节目 5. n.创造者vt.创造,present presence,category,autonomous,programmer programme,creator create,6. n.官员adv.官方地，正式地 7. n.同事，同僚 8. vt.拯救，救援 9. n.出口 10. adj.起初的；最早的adv.最初，起初n.起源；出身,o。

13、Unit 20 New Frontiers,内容索引,单元写作An article,单元语法Future perfect & Future continuous,Period Five Grammar & Writing,单元语法 Future perfect & Future continuous,语法感知,语法导学,用所给动词的正确形式完成课文原句 1.By the year 2015，the clothing industry (produce) new types of material that will remain stainless no matter what you spill on them. 2.By the year 2030，development in biochemistry and medical science (make) it theoretically possible for us to live for at least 150 years.,wi。

14、Unit 20 New Frontiers,基础自测,内容索引,要点探究,达标检测,课文预读,Period Three Lesson 3 Scientific Breakthroughs,基础自测,.重点单词 1. n.困境，进退两难的窘境 2. n.步骤；程序 3. vt.捐赠；赠送n.捐赠；赠送；捐赠物 4. vi.通信；符合 5. adv.同时 6. vi.分开，分离 7. adj.最重要的,dilemma,procedure,donate donation,correspond,meanwhile,split,premier,8. adj.直言的，坦率的 9. n.后果，结果 10. vt.治愈 11. vi.努力解决；摔跤；搏斗 1。

15、,Unit 20 New Frontiers,PART 1,基础自测,PART 2,互动探究,PART 3,达标检测,Warm-up & Lesson 1 FuturologyLanguage Points,PART 1,基础自测,默写练习(一),.写出下列单词的汉语意思(共12小题；每小题2分，满分24分) 1.bacteria n. _ 2.mass n. _ 3.crew n. _ 4.recreation n. _ 5.click vi. _ 6.handy adj. _ 7.shortly adv. _ 8.download vt. _ 9.update vt. _,查看答案,细菌,物质；质量,全体机组人员,消遣；娱乐,点击,方便使用的,不久；很快,下载,更新,10.worn adj. _ 11.conflict n. _ 12.dawn n. _。

16、,Unit 20 New Frontiers,PART 1,语法导学,PART 2,达标检测,GrammarFuture Perfect，Future Continuous & Pronouns,PART 1,语法导学,感悟规律 重点难点剖析,感知以下课文原句，完成方框下的小题,(一),1.句25为 ，表示在将来某一时间或某一行为发生之前所完成的动作，其构成为： 。 2.句1和句6为 ，表示将来某一时间正在进行的动作。其构成为： 。,查看答案,将来完成时,shall/will have过去分词,将来进行时,(二),1.On the border of England and Wales，it is full of beauty，with high hills，wooded countryside and. 2.It is probably s。

17、,Unit 20 New Frontiers,PART 1,基础自测,PART 2,课文预读,PART 4,达标检测,Lesson 3 Scientific Breakthroughs,PART 3,互动探究,PART 1,基础自测,默写练习(三),.写出下列单词的汉语意思(共10小题；每小题2分，满分20分) 1.microscope n. _ 2.procedure n. _ 3.organ n. _ 4.telescope n. _ 5.mist n. _ 6.navy n. _ 7.circuit n. _ 8.microwave n. _ 9.patent n. _ 10.jet n. _,查看答案,显微镜,步骤；程序,器官,望远镜,薄雾,海军,电路,微波炉,专利,喷气式,.写出下列汉语对应的英语单词(共10小题；每小题3分，满分30分) 11.困境，进退两。

18、,Unit 20 New Frontiers,PART 1,基础自测,PART 2,互动探究,PART 3,达标检测,Lesson 2 Artificial Intelligence,PART 1,基础自测,默写练习(二),.写出下列单词的汉语意思(共6小题；每小题3分，满分18分) 1.category n. _ 2.autonomous adj. _ 3.colleague n. _ 4.rescue vt. _ 5.exit n. _ 6.disconnect v. _,查看答案,类别；类型,自主的；自治的,同事，同僚,拯救，救援,出口,使不连接；切断,.写出下列汉语对应的英语单词(共7小题；每小题4分，满分28分) 7.主持(电视或广播节目)；呈现vt. _ 呈现；介绍n. _ 8.电脑程序编制员n. _ 程序；节目。

19、,Unit 20 默写练习(五),.单元知识回顾 (共50小题；每题1分，满分50分) 1.写出与assist有关的短语 (1)帮助某人做某事 _ (2)帮助某人做某事 _ (3)帮助某人做某事 _,查看答案,assist sb. with sth.,assist sb. to do sth.,assist sb. in doing sth.,2.写出与look有关的短语 (1)调查；向里面看 _ (2)留神，当心；向外看 _ (3)向上看；查阅 _ (4)看不起 _ 3.饿死 _ 4.和冲突(动作) _,查看答案,look into,look out,look up,look down on/upon,starve to death,come into conflict with/conflict with,5.写。

20、,Unit 20 New Frontiers,PART 1,技法点拨,PART 2,写作训练,WritingAn Article,PART 1,技法点拨,文体分析 把握写作动脉,主题介绍类书面表达属于说明文，目的是客观地介绍、解释事物，使读者获得知识和信息。写作此类文章时，要抓住区别于其他事物的本质特征。另外，要注意说明顺序，例如：时间顺序、空间顺序和逻辑顺序等；最后，还要注意语言和时态的运用(说明文的时态多用一般现在时)。说明文的语言要简洁朴实，表达要清晰，做到条理清晰，主次分明。 写作过程中应该注意以下几点： 1.抓住中心，分清主次。首先要仔细阅读文字提示或观察。