2021新版北师大版必修第二册英语Unit 4 information technology sectionⅰtopic talk 教材讲解.doc

1、Unit 4 INFORMATION TECHNOLOGY 主题语境人与社会之科学与技术 【语境概说】 本单元的主题语境为人与社会中的科学与技术，该主题语境主要包括科技发展与信息技术 创新、科学精神、信息安全等。本单元主要涉及科技发展与信息技术创新、信息安全。通过本单元的学习， 学生将对科技发展和信息技术创新有新的认知；同时在语言能力、文化意识、思维品质和学习能力等方面 得到融合发展。 Information technology is the first productive force in the 21st century. 信息技术是 21 世纪的第一生产力。 Information

2、is the carrier for mankind to inherit civilization and grasp the future. 信息是人类传承文明，把握未来的载体。 The development of hightech is both a blessing and a curse. 高科技的发展确实是一柄双刃剑。 Science is endless；it is an eternal mystery. 科学是永无止境的，它是一个永恒之谜。 Section Topic talk .PrelisteningTranslate the following words and ph

3、rases. 1explore vt. 探究；探讨 2convenience n. 方便，便利 3order vt. 订购 4download vt. 下载 5recommendation n. 建议；推荐 6update vt. 更新 7personality n. 个性，性格 8video chat with sb 和某人视频聊天 9enable sb to do sth 使某人能做某事 10communicate with sb 和某人交流 .Whilelistening 1Finish Ex.2 on Page 6. 2Finish Ex.4 on Page 7. .Postliste

4、ningListen to Activity 2 again and fill in the blanks. W：I love exploring new technologies, because they are so convenient.You know, I use apps to buy things online and I usually receive them the same day! M：Wow，thats really convenient W：Indeed！I know one that can even help you get what you order wi

5、thin two hours! M：What is it？Id like to try that, too. W：Sure，here_it_isBesides shopping online, I also like chatting online.It makes me feel less lonely.Technology really enables people to communicate better with each other. M：Thats true！But are there any disadvantages about these new technologies?

6、 W：Well，too much chatting online takes a lot of time.We really need time to focus_on what we are doing. .语言知识积累 关于网上购物的常用口语 1Do you often shop online? 你经常网上购物吗？ 2Sometimes I surf online shops to check out what they have and then go to a physical store to do the actual shopping. 有时候，我会逛逛网店，看看店里有什么，然后

7、到实体店去买。 3Can the quality of goods online be guaranteed? 网上商品的质量能有保证吗？ 4Prices are often relatively lower online. 通常，网上的价格相对比较低。 5Even though I shop online, I dont think its the best way to shop. 虽然我在网上购物，但我认为这并不是最好的购物途径。 6You can apply for a refund if you are not satisfied with the goods bought onli

8、ne. 如果你对网上买的东西不满意，可以申请退款。 7Theres still a long way to go before online shopping to be well recognized by the general public. 网上购物要得到人们的认可，还有很长的路要走。 .BrainstormingHow is information technology applied in our daily life? Information_technology_is_applied_in_many_aspects_of_our_daily_life， including_he

9、ath_care，transport，education，communication_and_so_on. .Make sentences after the model. 1I love exploring new technologies，because they. 我喜欢探索新技术，因为它们 仿写 我喜欢探索新技术，因为它们非常方便/使生活更轻松/能促进更好的交流。 I love exploring new technologies, because they are_so_convenient/make_life_easier/enable_better_communication 2

10、I use apps to.online 我使用应用程序在网上 仿写 我使用应用程序在网上聊天/交流/放松/购物。 I use apps to chat/communicate/relax/buy_things online. 3I also like chatting online.It.Well, too much chatting online. 我也喜欢网上聊天，它当然，网上聊天太多 仿写 我也喜欢网上聊天，它使交流变得方便/我感觉不那么孤独/信息更容易找到。当然，网上聊天太 多使我们变得自我关注/生活在一个虚幻的世界/上瘾/花费很多时间。 I also like chatting o

11、nline.It makes_communication_convenient/me_feel_less_lonely/information_easier_to_findWell, too much chatting online makes_us_self focused/live_in_an_unreal_world/addicted_to_it/takes_a_lot_of_time .Talk about the Internet using the following sayings or proverbs. 1In this world of rapid technologica

12、l progress, if you want to survive, you must continue to learn. 在这个科技进步得飞快的世界，你想要活下去，就要不断地学习。 2If you miss the Internet, you will miss not only the opportunity, but an entire era. 如果错过互联网，与你擦肩而过的不仅是机会，而是整整一个时代。 3Great Internet applications will either change how people access information or how they

13、 communicate. 伟大的互联网应用要么改变人们对信息的获取方式，要么改变人们的沟通方式。 4No invention has received more praise and abuse than Internet. 没有一项发明像互联网一样同时受到如此多的赞扬和批评。 The_Internet_is_playing_a_more_and_more_important_part_in_our_daily_life.On_t he_Internet,_we_can_learn_news_both_at_home_and_abroad_and_all_kinds_of_othe r_in

14、formation_as_well.We_can_also_send_messages_by_e-mail,_make_phone_calls,_g o_to_net_schools,_read_different_kinds_of_books_and_learn_foreign_languages_by _ourselves.Besides,_we_can_enjoy_music,_watch_sports_matches_and_play_chess_or_ _cards.On_the_Internet,_we_can_even_do_shopping,_have_a_chat_with_

15、others_and_ make_friends_with_them.In_a_word,_if_you_miss_the_Internet,_you_will_miss_not _only_the_opportunity,_but_an_entire_era. .文化知识习得 地球村 地球村，是说地球虽然很大，但是随着广播、电视、互联网和其它电子媒介的出现，大家交流就像在一个 小村子里面一样便利。 “地球村”(global village)一词是加拿大传播学家 M.麦克卢汉 1967 年在他的理解媒介：人的延伸 一书中首次提出。麦克卢汉对现代传播媒介的分析深刻地改变了人们特别是当代青年人，对

16、 20 世纪 以及 21 世纪生活的观念， 他所预言的地球村在今天的社会已经变成了现实。 在麦克卢汉看来， “地球村” 的主要含义不是指发达的传媒使地球变小了，而是指人们的交往方式以及社会和文化形态发生了重大变 化。 地球村是互联网的发展；是信息网络时代的集中体现；是知识经济时代的一种形式；而现代交通工具的飞 速发展，通信技术的更新换代，网络技术的全面运用使地球村得以形成。 .学习策略形成 如何有效地进行听说训练 1听懂文章大意 在听力过程中，不能只在意单词，要在意句子本身的意思，有些地方听不懂没关系，要了解整篇文章在说 什么。 2积累语言知识 整理每次听力材料中的新知识点、新单词，通过语境去

17、记忆。 3训练听说能力 听说能力可以从听写、精听、跟读和复述四个方面来训练。 (1)听写：先总体听一遍材料，了解大意；然后听文章句子，写下来，倒回去再听；直到把它完全写出来。 (2)精听：将听力材料一字一句地写下来，精确到标点符号。 (3)跟读：先对照着文本，精听至少三遍；然后尝试以相同的节奏跟读听力材料，不断地跟读，理想情况 下平均 8 遍之后可以跟上材料的语速。 (4)复述：整段复述(保证段落长度的复述时间不超过 1 分钟)。 4不要害怕犯错误 学习英语口语是在不断犯错误的过程中练习、进步的。因此练口语应该积极主动，克服害羞心理，利用一 切机会讲英语。 1convenience n方便，便

18、利；便利的事物 convenient adj.方便的；便利的 inconvenience n. 不 方便；不便 inconvenient adj.不方便的 provide convenience(教材 P6)提供便利 合作探究 体会 convenience 及其派生词的用法和意义 We hope to discuss business with you at your earliest convenience. 我们希望尽早与你方洽谈业务。 We have provided seats for the convenience of our customers. 为方便顾客，我们备有座位。 Wi

19、ll it be convenient for you to chat with me on the Internet tonight? 你今晚和我网上聊天方便吗？ 自主发现 at ones convenience 在某人方便的时候 for ones convenience (of)for the convenience of sb 为了某人的方便 It is convenient for sb to do sth 某人方便做某事 名师提醒 convenient 作表语时，不可用人作主语，要用物作主语或用 it 充当形式主语。表达“如果你方便的话” 和“在你方便的时候”时，要分别用 if it

20、 is convenient for you 和 when it is convenient for you。 词块积累 for convenience 为了方便起见 convenience food/store 方便食品/便利店 巩固内化 (1)单句语法填空 These gates are always open for the convenience of visitors. Any help from you will be greatly appreciated.Please give me a reply at your convenience. Will it be conveni

21、ent for you to start work tomorrow? (2)一句多译 方便的话，我们希望你能接受我们的邀请。 We hope you will accept our invitation at_your_convenience(convenience) We hope you will accept our invitation if/when_it_is_convenient_for_you(convenient) 2effect n效应；影响；结果(教材 P6) effective adj.有效的 合作探究 体会 effect 的用法和意义 While online sh

22、opping has changed our life, not all of its effects have been positive.虽然网 上购物已经改变了我们的生活，但它的影响并不全是积极的。 The new traffic rule came into effect.Now, it is beginning to take effect.In effect，it has an effect on peoples life in many ways besides peoples focus on the road safety.新的交通法 规开始实施了。现在它开始生效了。实际上，

23、除了人们对道路安全的关注外，它还在很多方面影响着人们 的生活。 自主发现 come into effect 生效，开始实施 take_effect 生效，开始起作用 in effect 实际上，事实上 have a/an.effect on/upon. 对有影响 词块积累 side effect 副作用 cause and effect 因果 巩固内化 单句语法填空 Should house property tax (房产税) come into effect，China might witness a fall in house prices. Optimism has a positiv

24、e effect on/upon peoples physical and mental health, of which Im very convinced. He said he graduated from a famous university，but in effect，he never went to college. One of the most effective (effect) ways to reduce stress is to talk about your feelings with someone you trust. 3addicted adj.对着迷的；沉迷

25、的 addiction n癖好 addict vt.使沉溺；使上瘾 n有瘾的 人 makes us addicted to it(教材 P6)使我们对它上瘾 合作探究 体会 addict 的用法和意义 Teenagers who are addicted to the Internet are more likely to suffer from depression.有网瘾 的青少年更可能患忧郁症。 Her son addicted himself to smoking, which had a bad effect on his health. 她的儿子吸烟上瘾，这对他的健康有很坏的影响。

26、 Addicted to playing the violin, he didnt find a thief walk into his house. 他醉心于拉小提琴，没有注意到小偷进屋。 自主发现 be/become/get addicted to sth/doing sth 沉溺于；专心做 addict oneself to sth 沉溺于 巩固内化 一句多译 很多孩子沉迷于上网，因此他们对学习失去了兴趣。 Many kids are/become/get_addicted_to surfing the Net, and so they have lost interest in stu

27、dy. Many kids addict_themselves_to surfing the Net, and so they have lost interest in study. Addicted_to surfing the Net, many kids have lost interest in study. 4admit vt.& vi.承认；容许；接纳；容纳 admission n承认；许可 Well，I admit it.(教材 P99)好吧，我承认。 合作探究 体会 admit 的用法和意义 He had to admit having made a serious mist

28、ake in public. 他不得不当众承认犯了一个严重的错误。 I have to admit that time can change everything，including your face and your mind.我不得不 承认，时间可以改变一切，包括你的容颜和你的想法。 The concerned mother became excited to hear the news of her sons having been admitted to the university.担忧的母亲听到她儿子被大学录取的消息十分激动。 Our football team decided

29、to admit him as one of the members. 我们的足球队决定吸收他为本队队员。 自主发现 admit doing/having_done/that. 承认 be admitted to/into 被接纳进入 admit.as. 接纳作为 巩固内化 (1)单句语法填空 Little Jack admitted having_stolen (steal) in the shop, promising that he wouldnt do that in future. He studies very hard in order to get himself admitt

30、ed into/to a key university. (2)一句多译 他承认无证驾驶。 He admitted having_driven without a driving license. He admitted that_he_had_driven without a driving license. .Listening ()Listen to Dialogue 1 just once and choose the best answer. How does chatting online make the woman feel? AVery happy. BVery sad. C

31、Less lonely. 答案 C 听力原文 W：I love exploring new technologies，because they are so convenient.You know，I use apps to buy things online and I usually receive them the same day! M：Wow, thats really convenient. W：Indeed！I know one that can even help you get what you order within two hours! M：What is it？Id

32、like to try that, too. W：Sure, here it is.Besides shopping online, I also like chatting online.It makes me feel less lonely.Technology really enables people to communicate better with each other. M：Thats true！But are there any disadvantages about these new technologies? W：Well, too much chatting onl

33、ine takes a lot of time.We really need time to focus on what we are doing. ()Listen to Dialogue 2 twice and choose the best answer. 1Who is the boys new phone from? AHis friend. BHis parents. CHis grandparents. 2What does the girl like doing on the phone? AReading news. BWatching movies. CPlaying ga

34、mes. 3What do we know about the boy? AHe is addicted to playing games. BHe likes playing games. CHe plays games for more than half an hour once. 答案 1.B 2.A 3.B 听力原文 (BBoy GGirl) B：This new phone is a birthday present from my parents.Ive downloaded lots of interesting and useful apps already.I like t

35、his music appI can listen to songs when I cant sleep or feel nervous.It really helps me relax. G：Thats cool！I like reading news on my phone.Do you have any recommendation? B：Oh，yes！You can download this app！Youll get updated with the news all day long. G：Super！Whats your favourite app? B：I enjoy pla

36、ying games.I have downloaded quite a few apps for different games.I use different avatars in different games and this is really cool because they let me explore different personalities.New games make my life interesting. G：Wow！That sounds cool！But you need to be careful about spending too much time

37、on themyou could get addicted. B：Well, I admit it.So I downloaded an app called “Alarm Clock”Once I play games for more than an hour, a bell rings to remind me that my time is up. .Listening and talking ()ListeningListen to Dialogue 2 twice and fill in the blanks. B：This new phone is a birthday pres

38、ent from my parents.Ive downloaded lots of interesting and useful apps already.I like this music appI can listen to songs when I cant sleep or feel nervous.It really helps me relax G：Thats cool！I like reading news on my phone.Do you have any recommendation? B：Oh，yes！You can download this app！Youll g

39、et updated with the news all day long. G：Super！Whats your favourite app? B：I enjoy playing games.I have downloaded quite a few apps for different games.I use different avatars in different games and this is really cool because they let me explore different personalities.New games make my life intere

40、sting. G：Wow！That sounds cool！But you need to be careful about spending too_much_time on themyou could get addicted. B： Well, I admit it.So I downloaded an app called “Alarm Clock” Once I play games for more_than an hour, a bell rings to_remind me that my time is up. ()TalkingMake a dialogue with your partner to talk about a useful app. The_answer_is_open.