北师大版（2019）高中英语必修第二册 Unit 4《Information Technology 高频单词知识精讲》课件

这是一份北师大版（2019）高中英语必修第二册 Unit 4《Information Technology 高频单词知识精讲》课件，共36页。

Unit 4 高频单词精讲北师大版（2019）高中英语必修第二册 1 | convenience n.方便;便利;便利的事物　　provide convenience/education/information提供便利/教育/信息 词汇情景导学For convenience, I keep my table lamp near my bed when I am sleeping.为方便起见,我睡觉时把我的台灯放在床边。Please give me an answer at your convenience.请在你方便时给我回复。 用法归纳①　    sb.’s convenience在某人方便时;在某人适宜的地点②　    (the sake of) convenience为方便起见atfor高频词汇①convenient adj.方便的;附近的be convenient for sb.对某人来说是方便的It is/was convenient (for sb.) to do sth.做某事(对某人来说)很方便•I’ll visit you next weekend if it is convenient for you.如果你方便的话,我下周末就去看望你。②conveniently adv.方便地•Their jaws were not conveniently structured.他们的下颚构造不方便(发音)。③inconvenience n.不便④inconvenient adj.不方便的词汇拓展 2 | effect n.效应;影响;效力,作用　　Effects/Impacts效应/影响 (教材P6)词汇情景导学Some ancient laws are still in effect now.有些古老的法律现在仍然有效。They must finish the work before the new tax rates come into effect.在新税率生效前,他们必须完成工作。These new laws should be brought/put into effect as soon as possible.这些新法律应该尽快实行。The successful signing of RCEP will have a positive long-term effect on the development of China.《区域全面经济伙伴关系协定》的成功签署将对中国的发展产生长期的积极影响。　     情景导学用法归纳①have an effect 　    ...对……有影响/起作用②　     effect有效;在实施中;实际上③come 　     effect生效;开始实施④bring/put...　     effect使……生效;实行/实施……oninintointo词汇拓展①effective adj.有效的;起作用的;实际的•The measures were effective.这些措施是有效的。②effectively adv.有效地;实际上用法归纳 3 | addicted adj.对……着迷的;上瘾的;沉迷的　　makes us self-focused/live in an unreal world/addicted to it使我们以自我为中心/活在不真实的世界里/对它着迷 (教材P6)词汇情景导学He was addicted to playing computer games and he didn’t see the person who came into his room.他沉迷于玩电脑游戏,没有看见进他房间的人。用法归纳be/become addicted 　    (doing)...对(做)……上瘾;沉迷于(做)……to情景导学词汇拓展①addict n.对……入迷的人;吸毒成瘾的人a work addict工作狂②addiction n.入迷;嗜好;瘾(an/one’s) addiction to...(一种/某人)对……的嗜好/瘾•You should fight your addiction to alcohol.你应该戒除酒瘾。③addictive adj.使人上瘾的•The boy is seriously addicted to video games and he finds them very addictive, thus turning into a video game addict.这个男孩严重沉迷于电子游戏,他发现电子游戏让人非常上瘾,因此成了电子游戏迷。词汇拓展情景助记 入迷的← addicted →上瘾的情景助记 4 | recommendation n.建议,提议;推荐　　Do you have any recommendation?你有什么推荐吗?  (教材P100)词汇情景导学If I had to make just one recommendation for where to stay in Rome, it would be Yellow Hos-tel.如果非得让我推荐一个在罗马住的地方,那会是Yellow Hostel。 用法归纳①make a/one recommendation (to sb.) 　    ...就……(向某人)提建议②on the recommendation of...根据……的建议③a letter of recommendation 介绍信;推荐信for特别提醒recommendation表示“建议”时后可跟同位语从句,从句中的谓语动词常用“(should+)动词原形”形式。情景导学recommend v.推荐,介绍;劝告,建议recommend sb. as/for...推荐某人为/做……recommend sth. to sb.向某人推荐某物recommend doing sth.建议做某事recommend sb. to do sth.建议某人做某事recommend that...=It is recommended that...建议……[从句中的谓语动词用“(should+)动词原形”形式]•Experts recommend exercising at least three times a week, but only 28% of students manage it.专家建议每周至少锻炼三次,但只有28%的学生能做到。•It is highly recommended that you write your own original compositions, which will help de-velop your identity in music.强烈建议你写你自己的原创作品,这将有助于培养你在音乐中的身份。(人教必修二)词汇拓展 5 | admit vi.& vt.承认 vt.准许……进入(或加入)　　Well, I admit it.是的,我承认。 (教材P100)词汇情景导学He admitted cheating/having cheated in the exam. However, the teacher didn’t blame him.他承认考试作弊了。然而,老师没有责备他。I had to admit (that) moving so often made me feel lonely.我不得不承认,经常搬家让我感到孤独。Can’t they admit that the preparations for the dinner are hard work?难道他们不承认晚餐的准备工作很辛苦吗? (外研必修二)One day I got word that he was admitted to hospital for a serious disease.有一天我得到消息说他因得重病而住进了医院。 (读后续写—情节描写)情景导学用法归纳①admit 　     /having done sth.承认做过某事②admit to (doing) sth.承认(做)某事③admit (　     )...承认…… ④be admitted 　     ...被允许进入/加入……;被接收入院doingthatto词汇拓展admission n.准许进入;承认;入场费•It’s said that history is written by the victors, and those victors set the standards for admis-sion to the genius club.据说历史是由胜利者书写的,那些胜利者为天才俱乐部制定了准入标准。 用法归纳 6 | variety n.多样化,变化;不同种类;品种　　Yet, very few people knew that future avatars would have such a wide variety of forms and uses.然而,很少有人知道未来的虚拟形象会有如此多种多样的形式和用途。 (教材P9)词汇情景导学Students in Shenzhen University can take part in a variety of sports clubs on campus.深圳大学的学生在校园内可以参加各种各样的体育俱乐部。William Shakespeare is known as one of the greatest writers in English literature, whose many plays appeal to a variety of readers to this day.威廉·莎士比亚被认为是英国文学中最伟大的作家之一,他的许多戏剧至今仍吸引着各种各样的读者。用法归纳a variety 　     ...各种各样的……of情景导学词汇拓展①various adj.各种不同的,各种各样的•The area provides an ideal habitat and plenty of food for various species of birds, such as blackbirds.该地区为各种鸟类,如黑鸟,提供了理想的栖息地和充足的食物。②vary v.变化;不同vary from...to...从……到……变化•The weather varied from very cold to quite mild.天气从非常寒冷变得相当暖和了。③varied adj.各种各样的,形形色色的词汇拓展 7 | selection n.供选择的同类物品;选择;被挑选的人(或物)　　In most web chats, people choose an avatar from a selection of ready-made images,or cre-ate their own images.在大多数网络聊天中,人们从各种现成的图像中选择一个头像,或者创建他们自己的图像。 (教材P9)词汇情景导学Students should make a selection from a range of reference materials.学生应该从多种参考资料中作出选择。Do you know anything about the selection procedure for astronauts?你知道宇航员的选拔程序吗?It seemed like the perfect chance for natural selection to act on a population.这似乎是自然选择对一个种群发挥作用的完美机会。 情景导学用法归纳①　      a selection作出选择②a selection of...选出的一些……③natural selection自然选择;物竞天择④the selection procedure选拔程序make词汇拓展select vt.挑选;选择select sb. to do sth.挑选某人做某事select...as...选择……作为……select...from...从……中挑选……•Simon has been selected to attend the conference.西蒙被选中参加此次会议。•York was selected as the site for the research centre.约克被选为研究中心的所在地。用法归纳 8 | concern n.担忧,忧虑;重要的事情 vt.使担心;关心;从事;与……有关;涉及　　The use of avatars has also caused a few concerns.头像的使用也引起了一些担心。 (教材P9)词汇情景导学Andrew expressed his concern about/for violence on TV.安德鲁表示了他对电视上的暴力(内容)的担心。 I don’t concern myself with unimportant details.我不关心不重要的细节。用法归纳 ①concern 　     ...对……的忧虑/担心 ②concern oneself 　     ...关心……;从事/忙于……about/forwith情景导学词汇拓展①concerned adj.关心的,关切的;有关的;担忧的be concerned about/for...为……担忧/忧虑be concerned about/with...关注……;关心……be concerned with...与……有关;涉及……as far as...is concerned就……而言•Write a letter to the WWF asking them for help to save one of the endangered animals you are most concerned about.给世界自然基金会写信,请求他们帮助拯救你最关心的濒危动物之一。 (写作—保护动物)•As far as I’m concerned, riding bicycles is a good solution.就我而言,骑自行车是一个很好的解决办法。词汇拓展②concerning prep.关于•What does the last paragraph mainly talk about concerning emotional intelligence?最后一段主要讲的是关于情商的什么?  9 | powerful adj.效能高的;强有力的;强壮的;有影响力的　　to become powerful变得效能高 (教材P12)词汇词汇拓展①power n.能力;力量,能量;影响力;权力 vt.驱动,为……提供动力in one’s power在某人的能力范围内beyond one’s power超出某人的能力范围be in power执政,掌权come to power上台;执政;掌权have the power to do sth.有能力做某事•The new government will come to power next month.新政府将在下个月执政。•Humans have the power to solve the problems confronting them.人类有能力解决他们所面临的问题。②powerless adj.无权的;无能为力的 10 | deliver vt.& vi.递送;传送 vt.发表(演说等);生孩子;接生　　...Ms Smith, your order was delivered last week.……史密斯女士,你的订单上周就送到了。 (教材P102)词汇用法归纳①deliver sth. 　      sb./sp.递送某物给某人/到某处②deliver a speech/lecture发表演讲③be delivered 　      a baby分娩;生孩子④deliver a baby接生toof词汇拓展delivery n.投递;递送;分娩;演讲方式用法归纳 11 | harm vt.& n.伤害,损害　　The Internet Harms Friendships互联网伤害友谊 (教材P15)词汇情景导学Spending too much time online does harm to people’s health.花费太多时间上网对人们的健康有害。 (写作—网络的影响)It does no harm to ask before we go there.在我们去那里之前,问一问也无妨。If you want to solve the problem in this way, there is no harm in calling him.如果你想以这种方式来解决问题,不妨给他打个电话。用法归纳①do/cause harm 　     ...对……造成伤害②it does no harm (for sb.) 　      sth./there is no harm in (sb.’s) 　      sth.(某人)不妨做某事toto dodoing情景导学词汇拓展①harmful adj.有害的,导致损害的be harmful to...对……有害•Indeed, the smartphone can bring great convenience to our life. However, it can be harmful to our eyes.的确,智能手机可以给我们的生活带来很大的便利。然而,它对我们的眼睛可能是有害的。 ②harmless adj.无害的;无恶意的•Moreover, the use of advanced solar technology ensures that it is harmless to the environ-ment.此外,先进的太阳能技术的使用确保了它对环境无害。词汇拓展 12 | concentrate v.专注,专心;集中(注意力);(使)集中于　　...communicating through a screen makes it more difficult for children to concentrate or show kindness to others.……通过屏幕交流让孩子们更难集中注意力或对他人表现出善意。 (教材P15)词汇情景导学From then on, I began to concentrate on every small thing in my study.从那时起,我开始专注于我学习中的每一件小事。 (写作—学习)I decided to concentrate all my efforts on finishing the meal for my mum.我决定集中所有的精力为妈妈完成这顿饭。用法归纳①concentrate (sth.) 　      sth./doing sth.集中注意力/精力等在(做)某事上;致力于(做)某事②be concentrated in...集中于……on词汇拓展①concentration n.集中;专心;关注;浓度•Ocean colour varies from green to blue, depending on the type and concentration of phyto-plankton.海洋颜色从绿色到蓝色不等,取决于浮游植物的类型和浓度。 ②concentrated adj.集中的;浓缩的;全力以赴的•They reflect a concentrated beam of light onto the town’s central square.它们将一道集中的光束反射到城镇的中心广场上。　     用法归纳 13 | focus v.集中(注意力);关注;(使)聚焦;(使)调节焦距 n.焦点;焦距;中心点　　In my opinion, friends should focus more on face-to-face communication, and less on on-line communication.在我看来,朋友应该更多地关注面对面的交流,而较少关注网上的交流。 (教材P15)词汇用法归纳 ①focus (...) 　     ...集中(……)于…… ②　      focus对准焦点,对焦;(图像)清晰 ③　      focus对焦不准;(图像)模糊on/uponinout of 14 | amazing adj.了不起的;惊人的　　In my opinion, the author did an amazing job of creating a whole new world through this book.在我看来,作者做了一件了不起的事情——通过这本书创造了一个全新的世界。 (教材P18)词汇词汇拓展①amaze vt.使惊讶②amazed adj.大为惊奇的be amazed at/by...对……感到吃惊be amazed to see/find...惊奇地看见/发现……•The teacher was amazed at/by the boy’s strong comprehension.老师对这个男孩的强大的领悟能力感到惊讶。词汇拓展③amazement n.惊奇,惊诧in amazement惊讶地to one’s amazement令某人惊讶的是•To my amazement, without saying a word, he suddenly ran out of the office.令我惊讶的是,他一句话也没说,突然从办公室跑了出去。 易混辨析易混辨析 15 | accessible adj.易懂的;易得到的;可到达的;可接近的;可使用的;可进入的　　It also makes the art accessible to the world while protecting the original artworks for the future.在为未来保护原始艺术品的同时,它也让世界了解艺术。 (教材P21)词汇情景导学Medicine should not be kept where it is accessible to children.药品不应放在儿童容易拿到的地方。用法归纳be accessible 　     ...对……来说易于得到/接近/进入/理解的to情景导学词汇拓展access n.通道;机会access to...去……的通道;……的机会have/gain/get access to...拥有……的机会/权利;可以获得/接近……•The only access to the country cottage is across the fields.去那个乡村小屋的唯一通路是穿过田野。•Across the world, 1.1 billion people have/get/gain no access to clean drinking water.全世界有11亿人无法获取干净的饮用水。 (写作—保护水资源)词汇拓展高频词汇积累词汇积累课程结束