Unit 3 Period 4 课时学案 单元语法讲练(Discovering Useful Structures)-【名师导航】2025-2026学年高中英语必修第二册教师用书配套课件（人教版）

该高中英语课件聚焦现在完成时的被动语态，通过6个互联网科技相关例句导入，结合语法体悟明确构成及被动关系，以语法精讲（形式、用法）和即时训练（句型转换等）为支架，帮助学生构建从感知到应用的知识脉络。 其亮点在于分层设计训练（即时训练到能力提升），融入科技主题语境（如3D打印短文填空），既强化语言能力（语法与语篇结合），又培养思维品质（语境应用与转换）。学生能在实践中掌握语法，教师可高效实施讲练结合教学。

UNIT 3　THE INTERNET 主题语境 人与社会 —— 科技发展与信息技术创新 Period 4　课时学案 单元语法讲练 (Discovering Useful Structures) 现在完成时的被动语态 美文诵读 Over the past twenty years，more and more high-techs ①have been used in our daily life，especially the Internet．So far，a lot of new software ②has been applied widely．Many functions ③have been added to the Internet，making people's lives more convenient．Many search engines ④have been developed，and people can look up the most updated information from large databases．Although many problems ⑤have been caused ever since the Internet came into being，any of us have benefited a lot from it．People's lives ⑥have been changed greatly by the Internet． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 语法体悟 左边黑体部分是现在完成时的被动语态。其构成是have/has been done；黑体部分的动词与句子的主语之间是被动关系。表示已经完成的被动动作。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 一、现在完成时的被动语态的形式 肯定式 主语＋have/has been done 否定式 主语＋have/has not been done 一般疑问式 Have/Has (not)＋主语＋been done？ 特殊疑问式 疑问词＋have/has (not)＋ 主语＋been done？ 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) A new network has been set up． 一个新的网络已经被建立起来了。 To Tom's disappointment，his novel has not been published． 让汤姆失望的是，他的小说还没有被出版。 Has his bike been repaired? 他的自行车修好了吗？ How many residents have been invited to the conference? 有多少居民接到了参会邀请？ 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 即时训练1 句型转换 The children have already been told the good news． ①将上面的句子变为否定句。 _________________________________________ ②将上面的句子变为一般疑问句。 ______________________________________ ③将上面的句子对the children进行提问。 _____________________________ The children haven't been told the good news yet． Have the children been told the good news yet? Who have been told the good news? 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 二、现在完成时的被动语态的用法 1．表示过去发生的动作对现在产生的影响和结果，且这个动作与句子的主语有逻辑上的动宾关系。 I have been told the sports meet will be put off． 我已被告知运动会将要被推迟。(结果：现在我已经知道运动会要被推迟。) All the preparations for the task have been done，and we're ready to start． 这项任务的一切准备都已就绪，我们准备好要开始了。(影响：我们现已具备开始的条件。) 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 2．表示一个被动的动作或状态从过去开始，持续到现在，并且有可能继续持续下去。常与“for＋时间段”或“since＋时间点”等时间状语连用，此时，该被动语态的动词应使用延续性动词。 The machine has been repaired for two hours． 这台机器已被修了两小时了。(持续：2小时前开始修，现在可能已经修好，也可能没有修好，还要继续修。) She hasn't been heard from since then． 从那时候起，她就没来过信。(hear from是非延续性动词短语，用在否定句中，后可跟表一段时间的状语。) 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) [名师点津]　常与现在完成时连用的时间状语： already 已经；recently/lately 最近；yet 已经；还；since then 从那时起；ever 曾经；ever since自那以来；by now 到现在为止；in recent years 在最近几年里；so far/up to now/till now/until now 迄今为止；in/during/over the past/last years 在过去的几年里 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 3．在状语从句中，常用现在完成时的被动语态代替将来完成时的被动语态。 I will go home when my homework has been finished． 当我的家庭作业已被完成时我就回家。(将来某时处于被完成的状态。) 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 即时训练2 用现在完成时的被动语态改写句子 ①They have built many houses in the village in the past few years． →_____________________________________________________ ②We have planted many trees on the hill in the last 5 years． →_________________________________________________ Many houses have been built in the village in the past few years． Many trees have been planted on the hill in the last 5 years． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 三、使用现在完成时的被动语态要注意的问题 1．与一般过去时的被动语态的区别。一般过去时的被动语态所表示的动作或状态与现在的情况没有联系，而现在完成时的被动语态则强调与现在的情况有联系。 The park was opened to the public last year． 这个公园去年向公众开放。(说明动作发生在过去。) The park has been opened to the public． 这个公园已向公众开放。(说明动作发生在过去，但对现在有影响，即现在公园已经向公众开放了。) 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 2．非延续性动词，如borrow，finish，begin，start，buy，marry，open，join等构成的现在完成时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思，则要改换动词或时间状语。 The work was finished two weeks ago． 这项工作于两周前被完成。 The work has been finished． 这项工作已经被完成。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 3．短语动词是一个不可分割的整体，在被动语态中要保持其完整性，其中的介词或副词不可省略。 It is said that the problem has been looked into． 据说这个问题已经被调查过了。 4．只带有一个宾语的动词变为被动语态时，将主动语态的宾语变为被动语态的主语。 Since the 1970s，we have found many new applications． →Since the 1970s，many new applications have been found by us． 自20世纪70年代以来，我们找到了许多新的应用。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 5．带有双宾语的动词，如give，send，bring，take，teach，show，tell，make，sing，write，read，sell，buy，pay，lend，pass，promise等，变为被动语态时，可将其中一个宾语变为主语，另一个保留不动。 We have given him a lot of cash． →He has been given a lot of cash by us． →A lot of cash has been given to him by us． 我们给了他很多现金。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 6．带有复合宾语的动词变为被动语态时，只能将宾语变为主语，原来的宾语补足语改为主语补足语。原来省略to的不定式作宾语补足语的，被动语态中要用带to的不定式。 I have told them to take their identity cards． →They have been told to take their identity cards by me． 我已经告诉他们要带上身份证。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 即时训练3 单句语法填空 ①So far，the forest fire ___________ (put) out by the professional firefighters and local volunteers． ②I feel really upset because I _______________ (catch) up with by my classmates in all the subjects． ③Have you noticed that the boys _______________ (laugh) at for their foolish mistake by the girls? ④To our happiness，all the young trees that we planted last month _____________ (take) good care of． has been put have been caught have been laughed have been taken 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 课时提升作业(八)　(UNIT 3　Discovering Useful Structures) Ⅰ．单句语法填空(共8小题；每小题1.5分，满分12分) 1．This famous painting __________ (buy) by a dealer three days ago． 2．Many man-made satellites ____________ (send) up into space so far． 3．How many cars _____________ (make) in the factory since last year? was bought have been sent have been made 4．You shouldn't leave school before your homework _______________ (finish)． 5．At the foot of Mount Tai you can also visit the temples that _________________ (protect) for over 3，000 years． 6．In the past ten years，great achievements _____________ (make) in our economy，life，science，and so on． 7．That was years ago．I ____________ (change) jobs since then． 8．In our school，the mind map ______________ (apply) to learning English since it was created． has been finished have been protected have been made have changed has been applied 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Ⅱ．完成句子(共5小题；每小题2分，满分10分) 1．最近他们进行了一项关于如何在课堂之外学习英语的调查。 Recently a survey about _______________________________________ _____________________． 2．多亏了刘老师的指导，我的英语已经有了很大的提高！ Thanks to Mr．Liu's guidance，_______________________________ _________ how to learn English beyond the classroom has my skills in English have been greatly been carried out by them improved! 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 3．这本书自出版以来已经被成千上万的人读过了。 ____________________by thousands of people since it was published． 4．教室已经被打扫过了，所以现在很干净。 __________________________，so it's very clean now． 5．到目前为止，人们已经做了很多事情来拯救当地的野生动物。 __________________________ to save the local wildlife by now． This book has been read The classroom has been cleaned So many things have been done 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Ⅲ．将下列句子改为被动句(共5小题；每小题2分，满分10分) 1．I have never heard Jenny say anything against her． →_________________________________________________ 2．They have done many experiments in the past few years． →__________________________________________________ 3．This company has produced new types of computers． →_______________________________________________________ Jenny has never been heard to say anything against her． Many experiments have been done in the past few years． New types of computers have been produced by this company． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 4．You can go home as soon as you have finished your task． →You can go home as soon as _______________________． 5．The company has given him a chance to work abroad recently． →He ______________________________________________________． →A chance to work abroad _______________________________________． your task has been finished has been given a chance to work abroad recently (by the company) has been given to him recently (by the company) 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Ⅳ．短文语法填空(共8小题；每小题1.5分，满分12分) Within the next decades，our lives may 1．___________ (change) beyond recognition by 3D printing．In recent years，many things in our lives 2．____________________ (affect)，right down to the food we eat．For instance，3D-printed hamburgers 3．__________________ (serve) to customers in some restaurants in London．But perhaps the most significant success that 4．___________________ (achieve) to date is in medicine．Human body parts，including a beating heart， be changed have been affected have been served has been achieved 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 5．_____________ (make) with 3D printing technology．And it is not just humans that 6．____________ (benefit) already，a new 3D-printed shell 7．____________ (give)to a turtle injured in a forest fire．In conclusion，our life 8．________________ (transform) by 3D printing in the future． have been made have benefited has been given will be transformed 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Ⅰ．阅读理解(共4小题；每小题2.5分，满分10分) Interspecies was once a technical term used in science to describe how one species got along with another．Now it is a word of more consequence: it arouses the new connections between humans and non-humans that are being made possible by technology．In Ways of Being，James Bridle，a British artist and technology writer，explores what this means for understanding the many non-human intelligences on Earth． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Mr．Bridle makes clear that three kinds of minds are now interacting: human，non-human and machine．Using artificial intelligence (AI)，machines will have the capability to interpose (使介入) themselves as translators between humans and other biological life forms in the future． It is true that profit is the main motive for advances in AI; as yet nature does not get much of a look-in，and non-human intelligences go unexplored outside zoology departments．Computing is as focused on humans as ever，even as climate change and biodiversity-loss suggest it should devote much greater attention to other species． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) The first step towards an interspecies future，Mr．Bridle argues，is showing more appreciation for other forms of intelligence．To some extent，this is already happening．For example，through films and other initiatives many people now know that octopuses (章鱼) have an advanced and strange intelligence．The next step，Mr．Bridle declares，is recognizing that people live in a “more than human”world．Other intelligences have developed from a common evolutionary base，and they overlap (重叠) in ways that science is just beginning to discover． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Ways of Being would have benefited from sharper editing．Yet，in making clear the patience，imagination and humility required to better know and protect other forms of intelligence on Earth，he has made an admirable contribution to the dawning interspecies age． 【语篇解读】　本文是一篇说明文。文章主要介绍了人工智能正在改变人们与其他生物之间的关系。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 1．Which of the following best illustrates the term “interspecies”？ A．A wolf hunts a rabbit． B．A robot does housework． C．A lady walks her dog． D．A boy records a video for squirrels． √ 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) D　[推理判断题。根据第一段中的“Interspecies was once a technical term used in science to describe how one species got along with another．Now it is a word of more consequence: it arouses the new connections between humans and non-humans that are being made possible by technology．”可知，种间关系这个术语是指人类和非人类之间的新联系。由此推断，一个男孩给松鼠录了一段视频最能说明这个术语所表述的含义。故选D。] 2．What does AI lay emphasis on nowadays? A．Biodiversity．　　　　 B．Other species． C．Humans． D．Climate change． √ C　[推理判断题。根据第三段中的“Computing is as focused on humans as ever，even as climate change and biodiversity-loss suggest it should devote much greater attention to other species．”可知，现在人工智能的重点是人类。故选C。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 3．What is paragraph 4 mainly about? A．The characteristics of species evolution． B．Expectations for the future development of AI． C．Suggestions on future exploration of interspecies． D．The importance of appreciation for other forms of intelligence． C　[段落大意题。根据第四段中的“The first step towards an interspecies future，Mr．Bridle argues，is showing more appreciation for other forms of intelligence．”可知，本段主要介绍对未来物种间探索的建议。故选C。] √ 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 4．Which word best describes the author's attitude to Ways of Being? A．Skeptical． B．Favorable． C．Tolerant． D．Conservative． B　[推理判断题。根据最后一段的内容(《存在之道》本可以从更尖锐的剪辑中获益。然而，在阐明更好地了解和保护地球上其他形式的智能所需的耐心、想象力和谦逊方面，他为跨物种时代的到来做出了令人钦佩的贡献)可推断，作者对《存在之道》的态度是赞同的。故选B。] √ 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Ⅱ．阅读七选五(共5小题；每小题2.5分，满分12.5分) Online marketing means advertising and marketing by using the Internet to drive sales of a product or service．The following are four online marketing methods for you to choose from． Write a blog 1 ．You can give advice on how to write articles and write product reviews and posts about upcoming events．Blogs give you more flexibility than other forms of social media．That's because you own the content and aren't bound (约束) by a third party's rules or restrictions． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Create videos Video is so popular because it's interesting and allows people to get information and entertainment that's easy to digest．You can produce creative videos that educate your customers about your products． 2 ． Write e-books 3 ．Price Waterhouse Cooper predicts that income from e-book sales in the United States will grow from $2.31 billion in 2015 to $8.69 billion in 2023．Since the popularity of e-books is increasing so significantly，consider using this type of media to connect with your customers． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 4 4 Teach a class in your specialty (专长)．You can teach the class in person，or you can offer it online． 5 ，because you teach it once，then you use it over and over again to connect with your customers．Choices for offering your class online include sending it through e-mail，posting it on your website，or publishing it on an online platform． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) A．Teach an online course B．You had better not post these things on your blog C．Teaching an online course is more practical and profitable D．Also，promote your videos across several social media channels E．If you have a business，consider starting a blog as part of your marketing plan F．Many students drop out of online courses because of the lack of teaching support G．E-books can help you build your brand and offer valuable information to your target audience 【语篇解读】　本文是一篇说明文。文章主要介绍了网络营销的四种方法。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 1．E　[根据该段标题“Write a blog”以及下文“You can give advice on how to write articles and write product reviews and posts about upcoming events．”可知，该段主要讲的是通过写博客来进行网络营销。选项E和该段主旨意思一致，上下文紧密连接，语义连贯。故选E。] 2．D　[根据上文“You can produce creative videos that educate your customers about your products．”可知，该段讲的是制作视频，让客户了解你的产品。选项D承接上文内容，与上文内容在语义上递进，符合语境。故选D。] 3．G　[根据该段标题“Write e-books”以及下文(Price Waterhouse Cooper预测，美国电子书销售收入将从2015年的23.1亿美元增长到2023年的86.9亿美元。)可知，该段主要讲的是关于网络营销方法之一——电子书。选项G和该段主旨意思一致，上下文紧密连接，同时呼应该段标题内容。故选G。] 4．A　[由下文可知，该段主要讲的是网络营销方法之一——在线课程的相关内容。选项A意思一致，为总结该段内容。故选A。] 5．C　[上文“You can teach the class in person，or you can offer it online．”提到在线授课。下文“because you teach it once，then you use it over and over again to connect with your customers”具体解释在线授课有助于网络营销的好处。由此可推知，空格处内容应说明在线课程的优点。选项C符合此推断，起到承上启下的作用，上下文语义连贯。故选C。] Ⅲ．完形填空(共15小题；每小题1分，满分15分) For the past four years I had been having up to 30 seizures (癫痫发作) a day．It made me 1 a lot． Despite 2 visits to hospitals，no doctor could tell me the cause of it．At night，my family had to check on me just in case I wasn't 3 ．So I could never be in a room alone and as a 21-year-old young man，I was finding the lack of 4 getting me down． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) One day，my friend Kerri asked if I wanted an assistance dog．I knew there were guide dogs for the 5 ，but I wasn't sure how a dog could help me．A few days later，Kerri told me she'd done some search and found a company “Dogs For Life”．From the website of the company，I 6 that they teach dogs to smell a chemical change in the body and 7 people when a seizure is about to 8 ． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Soon after，I 9 Baloo，a dog trained by Dogs For Life．It sat silently in the corner．As I sat down，Baloo suddenly 10 and jumped on me．Minutes later，I had a seizure．It had 11 the chemical changes in my body and tried to warn me．It was by my side until the 12 came．Instantly，I knew it was a good 13 for me，and I took her back home． It's 14 my life more than a handful of times and I couldn't be more 15 for it． 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 【语篇解读】　本文是一篇记叙文。文章讲述了作者经常犯癫痫病，但是没有医生能找出病因，这让作者很痛苦，直到有一天，他遇到了一只能感觉到人体内的化学变化，并对人发出警告的狗Baloo，作者把Baloo带回了家，此后Baloo多次救了作者的命，他对它感激不尽。 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 1．A．think　　　　　　 B．hide C．suffer D．learn C　[根据上文“For the past four years I had been having up to 30 seizures a day．”及常识可知，这种情况会让人很受苦。故选C。] √ 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 2．A．personal B．countless C．formal D．impressive √ B　[根据上文“For the past four years I had been having up to 30 seizures a day．”及下文“no doctor could tell me the cause of it”可知，因为经常犯病，所以去了无数家医院看病，但是没有找到病因。故选B。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 3．A．sleeping B．working C．replying D．breathing √ D　[根据上文“For the past four years I had been having up to 30 seizures a day．”及“At night，my family had to check on me just in case”可知，作者经常犯癫痫病，家人晚上检查他，是为了防止他晚上犯病，从而导致没有了呼吸。故选D。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 4．A．warmth B．fun C．safety D．independence √ D　[根据上文“So I could never be in a room alone”可知，作者永远不能独自待在一个房间里，所以此处指缺乏独立性让他很沮丧。故选D。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 5．A．deaf B．blind C．injured D．elderly √ B　[根据上文“I knew there were guide dogs”及常识可知，导盲犬是为盲人服务的。故选B。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 6．A．wrote B．learnt C．overheard D．planned √ B　[根据下文“that they teach dogs to smell a chemical change in the body and people when a seizure is about to ”可知，此处是作者了解到的事情。故选B。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 7．A．warn B．attract C．follow D．hit √ A　[根据上文“that they teach dogs to smell a chemical change in the body”及下文“It had the chemical changes in my body and tried to warn me．”可知，此处指这些狗发现危险时，会警告人们。故选A。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 8．A．burn out B．break in C．come on D．drop by √ C　[根据上文“when a seizure is about to”可知，此处指癫痫即将发作。故选C。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 9．A．saved B．addressed C．met D．invited √ C　[根据下文“Baloo，a dog trained by Dogs For Life”可知，作者遇到了一只名叫Baloo的狗。故选C。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 10．A．rose B．lay C．struggled D．played √ A　[根据上文“It sat silently in the corner．”及下文“jumped on me”可知，开始的时候Baloo是坐着的，此处指Baloo突然站起来，向作者扑来。故选A。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 11．A．sensed B．caused C．touched D．cried √ A　[根据上文“From the website of the company，I that they teach dogs to smell a chemical change in the body and people when a seizure is about to ．”可知，这些狗能感觉到人体内的化学变化，并对人发出警告。故选A。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 12．A．action B．attack C．guide D．help √ D　[根据上文“Minutes later，I had a seizure．”及常识可知，作者的癫痫病发作了，这只狗一直在他身边，直到救援到来。故选D。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 13．A．boss B．teacher C．partner D．listener √ C　[根据上文“It was by my side until the came．”及下文“and I took her back home”可知，作者意识到这只狗是他的一个好搭档，所以把这只狗带回家了。故选C。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 14．A．risked B．stopped C．kept D．saved √ D　[根据下文“my life more than a handful of times”可知，这只狗多次救了作者的命。故选D。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 15．A．thankful B．anxious C．excited D．patient √ A　[根据上文“It's my life more than a handful of times”可知，这只狗多次救了作者的命，所以他很感激它。故选A。] 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) Ⅳ．语法填空(共10小题；每小题1.5分，满分15分) The Internet has revolutionized the way we live and work．It has made the world seem smaller and more 1． (connect)．With just a click of a button，we can access information from all over the globe． One of the most significant impacts of the Internet 2． (be) on education．Online learning platforms have made education more 3． (access) to people from all walks of life．Students who live in remote areas can now gain access to quality education 4． they would otherwise be unable to get．Moreover，the Internet has also transformed the job market．It has enabled people 5． (work) remotely．This，in turn，has led to 6． increase in the number of self-employed people． connected is accessible that/which to work an 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) However，the Internet also brings certain challenges．With the vast amount of information available online，it can be difficult to tell between what is true 7． what is false．Social media platforms have also become an important part of our lives．They allow us to stay connected with friends and family，sharing 8． (update) and memories．However，they can also be a source of distraction，affecting our productivity and focus． and updates 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) In conclusion，the Internet has brought both opportunities and challenges．It is up to us to use it wisely and 9．____________ (responsible)．Only by doing so can we ensure that the Internet remains a powerful tool for 10． (advance) human civilization． 【语篇解读】　本文是一篇说明文。文章主要介绍了互联网彻底改变了我们的生活和工作方式。它让世界看起来更小，联系更紧密。 responsibly advancing 课时提升作业 Period 4　课时学案 单元语法讲练(Discovering Useful Structures) 1．connected　[考查形容词。根据句意以及空前seem系动词可知，此处需要形容词作表语，表示“更连接的”。connect为动词，其形容词形式为connected。故填connected。] 2．is　[考查动词的时态。本句的主语为 one，为单数；再结合上下文可知，此处是描述客观事实。故填 is。] 3．accessible　[考查形容词。结构make sth．＋形容词，形容词作宾补。access的形容词为 accessible，意思为：可接近的；可使用的。 故填accessible。] 4．that/which　[考查定语从句的关系词。分析句子结构可知，they would otherwise be unable to get为定语从句，修饰先行词quality education，从句中get缺宾语，先行词为事物，故填关系代词that或which。] 5．to work　[考查非谓语动词。结构 enable sb．to do sth．意思为：使某人能够做某事，不定式作宾补。故填 to work。] 6．an　[考查冠词。increase可用作可数名词，结构an increase in sth．意思为：在……方面上的增加。故填an。] 7．and　[考查并列连词。句意：由于网上有大量的信息，很难分辨什么是真的，什么是假的。结构 between...and...，常可译为 “在…… 和…… 之间”。故填and。] 8．updates　[考查名词复数。update用作可数名词，意思为：最新消息。句意：它们让我们与朋友和家人保持联系，分享最新消息和回忆。故填updates。] 9．responsibly　[考查副词。句意：我们有责任明智而负责任地使用它。修饰动词use应用副词，形容词responsible的副词形式为responsibly。故填responsibly。] 10．advancing　[考查非谓语动词。句意：只有这样，互联网才能成为推动人类文明进步的有力工具。此处需要动词-ing形式作介词for的宾语，表示“推进人类文明”。advance为动词，意为“推进”，其动词-ing形式为advancing。故填advancing。] $