2021新版北师大版必修第二册英语Unit 4SectionⅠ教学知识细解码 同步讲解.doc

1、1/10 1trick vt.欺骗，诱骗，哄骗tricky adj.狡猾的，诡计多端的 2vary v(大小，形状)不同；变化；不等various adj.各种各样的variety n多样化，变化 3instant adj.立刻的，马上的instantly adv.立刻地，马上地 4create v创造creativity n创造力；独创性creative adj.创造性的 5obvious adj.清楚的，明显的obviously adv.显而易见地，明显地 6select v选择，挑选selection n供选择的同类物品；选择 7type vi.&vt.打；打字typist n打字员 8

2、concern n担忧，忧虑 vt.与有关；使担心concerned adj.关切的； 关心的concerning prep.关于，涉及 1admit v(常指勉强)承认；承认(过错、罪行)；招认；招供；准许进 入(某处) She admits to being strict with her children. 承认 She admitted to having stolen the car. 供认 You will not be admitted to the theatre after the performance has started. 准许进入 2concern v影响，牵涉(某

3、人)；与有关；涉及；让(某人)担忧 n.(尤 指许多人共同的)担心，忧虑；关爱；关心；(对人、组织等)重要的事情 The individuals concerned are being questioned by the police. 涉及 It concerns me that you no longer seem to care. 担忧 She hasnt been seen for four days and there is concern for her safety. 担心 The governments primary concern is to reduce crime. 重

4、要的事情 Words and Phrases 知识要点1 convenience n方便；便利 (教材 P6)provide convenience 提供方便 2/10 例 1 It was a great convenience to have the school so near. 学校这么近真是太方便了。 例 2 Frozen fish is a kind of very healthy convenience food. 冻鱼是一种非常健康的方便食品。 造句 商店日夜服务，对群众来说非常方便。 Shops that stay open twenty- four hours a day

5、are a great convenience to the public. 知识拓展 (1)for convenience 为了方便起见 at ones convenience 在某人方便的时候 (2)convenient adj. 方便的；便利的 It is convenient for sb.to do sth. 某人方便做某事 即学即练 Please ask him to call me back at his convenience. Many people buy things online just for convenience. Come and see me wheneve

6、r it is convenient for you. 名师点津 (1)convenient 作表语时，不能用表示人的名词或代词作主语，多用于 It is convenient for sb.to do.这一句型中。 (2)convenience 意为“方便；便利”时为不可数名词；表示“便利的事物； 便利设施”时为可数名词。 知识要点2 addicted adj.对着迷的；沉迷的 (教材 P6) makes us addicted to it 使我们沉迷于它 例 1 Many of the women are addicted to heroin and cocaine. 这些女人中很多人都吸

7、食海洛因和可卡因成瘾了。 例 2 She says shes unable to give up smoking；shes completely addicted to it. 她说她无法戒烟，已经完全上瘾了。 造句 他最近玩电脑游戏有些走火入魔了。 3/10 He has recently become addicted to computer games. 知识拓展 (1)be addicted to 对有瘾；热衷于 (2)addiction n. 入迷；上瘾 addictive adj. 上瘾的 (3)addict v. 使沉溺；使上瘾 n. 入迷的人 addict oneself to

8、 沉溺于 即学即练 Now many children addict themselves(them) to computer games. It doesnt take a long time to become addicted to these drugs. 小片段填空 While his wife was in hospital in the United States，he got totally addicted to alcohol，and his son addicted himself to computer games.As a result，his son has los

9、t interest in his lessons，which makes his wife very angry. 知识要点3 trick vt.欺骗，诱骗，哄骗 n诡计；恶作剧；窍门 (教材 P8) to trick others 欺骗其他人 例 1 They had to think of a trick to get past the guards. 他们只好想出个计谋来骗过警卫。 例 2 He used the old trick of attacking in order to defend himself. 他采用了以攻为守的老招数。 造句 这不是你半个小时就能学会的小窍门。 I

10、t is not just a little trick you can pick up in half an hour. 知识拓展 (1)trick sb.into doing. 欺骗某人做某事 trick sb.out of sth. 从某人处骗走某物 (2)play a trick/tricks on sb. 捉弄某人 即学即练 That guy tricked me into paying(pay) too much money! The people of the town liked to play tricks on him. 4/10 知识要点4 a variety of 各种

11、各样的 (教材 P9) Yet，very few people knew that future avatars would have such a wide variety of forms and uses. 但是，几乎没有人想到，虚拟形象在未来居然有如此多样的形式和如此广泛 的应用。 例 1 People change their mind for a variety of reasons. 人们会由于种种原因改变主意。 例 2 A variety of heavy industries grew up alongside the port. 各种重工业沿着港口逐渐发展了起来。 造句 这

12、个花园有多个引人入胜之处。 The garden offers a variety of attractions. 知识拓展 (1)a variety ofvarieties of 各种各样的 the variety of. 的品种 (2)vary vt.& vi. 改变，变化；不同 vary with. 随着而变化 vary from.to. 在之间变化 (3)various adj. 各种各样的 即学即练 There are varieties(vary) of plants in the forest. A babys need for food can vary from day to

13、 day. These data have been collected from various(vary) sources. 名师点津 (1)a variety of/varieties of 后面跟名词复数作主语，谓语用复数形式； (2)the variety of 后面跟名词复数作主语，谓语用单数形式。 知识要点5 concern n担忧，忧虑 vt.与有关；使担心 (教材 P9) The use of avatars has also caused a few concerns 虚拟形象的使用也已经引起了一些担忧。 例 1 There is growing concern about

14、 violence on television. 人们对电视上充斥暴力内容的忧虑日益加重。 5/10 例 2 The group has expressed concern about reports of political violence in Africa. 该团体对有关非洲政治暴力的报道表示关切。 造句 他已经一天没有来上课了，老师很担心他的安全。 He hasnt been to class for a day and the teacher is concerned about his safety. 知识拓展 (1)concern oneself with/about. 忙于/

15、关心 show/express concern for/about. 对表示关心/忧虑 (2)concerned adj. 担心的，关切的 be concerned about/for/that. 担心/关心 be concerned with 与有关；涉及 be concerned in 参与 as/so far as.be concerned 就而言；依之见 (3)concerning prep. 关于 即学即练 More and more people are concerning themselves about environmental problems. The report e

16、xpressed concern about/for continued high unemployment. And as far as your body is concerned(concern)，its “use it or lose it” ！ 小片段填空 Besides doing his research work，Professor Li concerns himself with social work.For example，he is concerned about/for world peace and human progress.He also made it cl

17、ear that his research work should be concerned with the farmers income. 知识要点6 view vt.看，把视为 n.风景；视野；观点 (教材 P9) However，other users view avatars in a more positive light. 然而，一些人以更积极的目光看待虚拟形象。 例 1 His views on the subject were well known. 他对这个问题的看法众所周知。 例 2 How do you view your position within the com

18、pany? 6/10 你如何看待自己在公司中的位置？ 造句 从塔顶远眺景色蔚为壮观。 The view from the top of the tower was spectacular. 知识拓展 (1)view.as 把视为 (2)come/burst into view 进入视野，出现在眼前 in view 在视野中 view on/about. 对的看法 in view of sth. 鉴于；考虑到；由于 in ones viewin the view of sb. 在某人看来 即学即练 We kept the other car in view for a while，but the

19、n lost sight of it. Something that I had never seen before came/burst into view suddenly. Imagination is often viewed as the key to success. 知识要点7 recommendation n建议，提议；推荐 (教材 P99)Do you have any recommendation？你有一些建议吗？ 例 1 The committee made recommendations to the board on teachers pay and conditio

20、ns. 委员会就教师的工资和工作条件问题向董事会提出建议。 例 2 Its best to find a builder through personal recommendation. 最好通过私人介绍寻找施工人员。 造句 委员会的建议不大可能公开。 The committees recommendations are unlikely to be made public. 知识拓展 recommend vt. 推荐；建议；劝告；介绍 recommend sb.sth.recommend sth.to sb. 向某人推荐某物 recommend sb.to do sth. 建议某人做某事 r

21、ecommend doing sth. 建议做某事 recommend that sb.(should) do sth. 7/10 建议某人做某事 即学即练 It is such a great hotel that I would recommend it to any friend of mine who is going to Beijing. He recommended that we (should) see the film，Lost In Thailand. He recommended us to see(see) the film，Lost In Thailand. Its

22、 strongly recommended that the machine(should) be repaired(repair) every year. 知识要点8 admit vi.& vt.承认；接纳，容纳 (教材 P99)Well，I admit it.好吧，我承认这一点。 例 1 I must admit to feeling ashamed of my conduct. 我必须承认我为自己的行为感到羞愧。 例 2 They freely admit (that) they still have a lot to learn. 他们坦率地承认，他们要学的东西还很多。 造句 你必须承

23、认这一切听起来很古怪。 You must admit that it all sounds very strange. 知识拓展 (1)admit doing/having done sth. 承认做过某事 admit sb.to/into 准许某人进入/加入 be admitted to 被录取进入 be admitted as 作为被接受 It is generally admitted that. 一般认为 (2)admission n. 准许进入；入场券，入场费；承认 即学即练 It is generally admitted(admit) that contract English

24、belongs to the frozen style，the highest level of formality. He admitted stealing/having stolen(steal) the bicycle. He was admitted to hospital suffering from burns. Sentence Patterns 重点句式 so.that.句型 8/10 (教材 P9) Some users worry that they are spending so much time in virtual worlds that they are bec

25、oming afraid of meeting people in the real world. 一些网民开始担心自己在虚拟世界沉溺太久， 以至于开始害怕在现实中与人 交往。 句式分析： 句中包含了“so.that.”固定句型， 意为“如此以至于”。 that 引导结果状语从句。 例 1 I am so tired that I want to sleep right now. 我非常累，因此想马上睡觉。 例 2 She is so beautiful that all boys want to make friends with her. 她如此美丽，以至于所有的男孩们都想和她做朋友。 造

26、句 我妹妹年龄太小，她还不能去上学。 My sister is so young that she cant go to school 知识拓展 (1)soadj./adv.that. soadj.a(n)单数可数名词that. somany/few复数名词that. somuch/little(少)不可数名词that. (2)sucha(n)adj.单数可数名词that. suchadj.复数名词that. suchadj.不可数名词that. 即学即练 Kathy is so lovely that we all like to play with her. There is so muc

27、h work to do that I wont be able to take off this year. It was such bad weather that we stayed at home all the day. When people started creating their own avatars，they discovered that they were going to have the power to create new identities that did not look or act like their real selves at all. 分

28、析 本句是一个复合句， when 引导时间状语从句； 第一个 that 引导宾语 从句， 作 discovered 的宾语； 第二个 that 引导定语从句， 修饰先行词 new identities； 9/10 to create new identities 作定语修饰 the power。 翻译 当人们开始创造自己的虚拟形象时，他们发现他们能够创造一个全 新的自己，这个“全新的自己”和他们真实的外表或行为完全不同。 教材 高考 1.Yet，very few people knew that future avatars would have such a wide variety of

29、forms and uses. (2019 天津卷)Most of us，in fact， progressively narrow the variety of our lives. 2.The use of avatars has also caused a few concerns. (2019北 京 卷 )I voiced my biggest concern to my mother. .单句语法填空 1When the football fans saw the super star，they got so excited that they cried out. 2Each pa

30、rtner is viewed as the others agent. 3I was concerned(concern) that I was not protected and would get a sunburn. 4It is important for us to meet personally although we have been in touch in various(vary) ways. 5He tricked me into spending(spend) all my money. 6He admitted stealing(steal) the necklac

31、e the day before and said he was sorry. 7 The best way of finding a lawyer is through personal recommendation(recommend) 8I know a lot of people who are addicted to smoking(smoke) 9Please send her the book at your convenience(convenient) 10If possible，I want to stay with you forever. .短语填空 more than

32、 one；at all；more or less；in the 1980s；a variety of；become afraid of 1Sectors in the economy can be viewed in a variety of ways. 2In the 1980s，we surfed the changing business environment. 10/10 3Really I had no business to be there at all 4More than one person has been concerned in this affair. 5What

33、 you have done will more or less be helpful to us. 6Fears that we dont talk about may make us become afraid of all things. .课文语法填空 Some digital identities，1.known(know) as avatars，are a key part of how people use the Internet to communicate.The first simple 2D avatars appeared in 2.the 1980s.By the

34、late 1990s ， they had been used in web chats like instant messenger.Nowadays，they are everywhere.People can choose an avatar 3.from a selection of ready- made images，or create their own that can talk，walk，and fly around. The avatar says a lot about your personality.When you choose a picture of a cut

35、e cat，you want to say， “I like relaxing and 4.having(have) fun”Cartoon characters or laughing monkeys express “I am a really 5.funny(fun) person”Some people make a few 6.improvements(improve) and also experiment with things like hairstyles. Avatars let you express 7.yourself(you) and give you a lot

36、of room for creativity.They find they have the power to create new identities 8.that did not look or act like their real selves. But the use of avatars has caused a few concerns.Some worry that they are spending so much time in virtual worlds that are becoming afraid of 9.meeting(meet) people in real world.Some people even use avatars 10.to cheat(cheat).