Day 9 定语从句之关系代词精讲精练-2024年英语初高中衔接大全（全国通用版)

Day 9定语从句之关系代词精讲精练 【定语从句概况】 在复合句中，修饰名词、代词或整个句子的从句叫作定语从句。定语从句从本质上讲，类似于一个形容词，起修饰限定作用。定语从句分为限制性定语从句和非限制性定语从句。引导定语从句的关系词又分为关系代词和关系副词。 【关系代词引导的定语从句】 一、关系代词的基本用法 关系代词 先行词 在从句中所充当的成分 that 人/物 主语、宾语、表语 which 物 主语、宾语、表语 who 人 主语、宾语 whom 人 宾语 whose 人/物 定语 as 物 主语、宾语、表语 例句感知： 1）It is helpful to offer some excellent books that/which reflect Chinese culture to raise readers' reading interest and broaden their cultural horizons. 提供一些反映中国文化的优秀书籍有助于提高读者的阅读兴趣，拓宽他们的文化视野。 （先行词是__________________，关系代词在句中作________________） 2）I'm Tom from US，who is interested in traditional Chinese culture. 我是来自美国的汤姆，对中国传统文化很感兴趣。 （先行词是_________________,关系代词在从句中作________________） 3）Are you looking for volunteers that/who will help the locals rebuild their hometown? 你们正在寻找能够帮助当地人重建家园的志愿者么？ （先行词是_________________,关系代词在从句中作________________） 4) Mr.Smith is the person (whom/who/that) I am working with. 史密斯先生是和我一起工作的人。 （先行词是_________________,关系代词在从句中作________________） 5)The contest whose theme is “ Discover Beautiful China”welcomes individuals around the world to share their brilliant works. 本次大赛以“发现美丽中国”为主题，欢迎世界各地的人们分享他们的精彩作品。 （先行词是_________________,关系代词在从句中作________________） 答案：1. books 主语 2. volunteers 主语 3. Tom （from US） 主语 4. the person 宾语 5. the contest 定语 二、关系代词的用法区别 1.that和which的区别（切记） 只用that 的情况 先行词是all，everything，anything，nothing，something，little，much，none，few，the one等不定代词时。(如先行词指人，可用who代替that) 先行词被the only，the very (正是、恰是)，the last等修饰时。(如先行词指人，可用who代替that) 先行词被all，any，few，every，no，little，much，some等词修饰时。(如先行词指人，可用who代替that) 先行词被序数词、形容词最高级修饰或先行词本身是序数词时 先行词中既有人也有物时 只用which 的情况 引导非限制性定语从句时 关系代词前有介词时 例句感知： 1）The second book that the writer wrote was popular with young generations. 那个作家写的第二本书很受年轻人的喜欢。 2)These customs are the very ones that should be passed down. 这些习俗正是该被传承。 3）The Forbidden City，which is the landmark of China，has a very long history. 中国的地标建筑紫禁城有着悠久的历史。 4）I want to find the pen with which I wrote the letter. 我想找到我写那封信时用的那支钢笔。 2.which与as引导非限制性定语从句时的区别 which as 位置 只能放在先行词的后面 位置灵活，可位于句首、句中，也可置于句末 搭配 无动词的 限制 谓语动词通常是表示感觉或心理活动的动词，如see，hear，know，expect，remember等 意思 这一点，这件事 正如……，正像……的那样 例句感知： 1）As we all know，the Great Wall is one of the greatest wonders in the world. 众所周知/正如我们所知，长城是世界上最伟大的奇迹之一。 2）He changed his mind again and again，which made us very annoyed. 他一次又一次地改变主意这让我们非常生气。 3.其他关系代词的用法区别 关系代词 先行词 在从句中所充当的成分 who 人 主语、宾语(限制性定语从句中可省略) whom 人 宾语(限制性定语从句中可省略) whose(＝of whom/of which) 人或物 定语 例句感知： 1)They are in the house whose windows face the south. 他们在那间窗户朝南的房子里。 2)Actually，he is an honest and reliable person，whom/who you can rely on. 事实上，他是一个诚实可靠的人，你可以依靠他。 解题思路从句中缺少主语，且先行词是物，填that/which · 从句中缺少主语，且先行词是人，填that/who · 从句中缺少宾语。且先行词是物，填that/which · 从句中缺少宾语，且先行词是人，填that/who/whom · 从句中缺少定语，填whose · 关系代词专项训练 一、语法填空 1．This is the book _______________I bought yesterday. 2．The army sent soldiers to dig out those _______________ were trapped. 3．They were well trained by their masters _______________ had great experience with caring for these animals. 4．Do you still remember the days _______________ we spent together? 5．He used the donated fund and his own money to pay the 50 pounds per child _______________ the British government required. 6．After graduation, he joined the very organization _______________ was set up to help the seniors. 7．She was not the woman _______________she used to be. 8．I will help those _______________ are in need of help. 9．Our teacher did all_______________ he could to help us. 10．My uncle is the owner of a restaurant close to the place _______________ is the center of the town. 11．The mother made a promise _______________ pleased all her children. 12．This is such an interesting work of art _______________ all of us like. 13．We young people should go to the place _____________ is in need of help. 14．After each cycle of trading, companies _______________ have leftover carbon allowances (限额) can sell them to others. 15．Instead of an economy of the typical take-make-dispose model, ChopValue seeks to create one _______________transforms waste into a usable resource. 16．What makes something a sport? Traditional definitions usually included some physical activities _______________ show athletic ability or strength. 17．I don’t like the way _______________ you speak to her. 18．He is the only man _______________ I can find for the work. 19．He is no longer the man _______________ he was five years ago. 20．The first English novel _______________I read was Gone With Wind. 21．This is one of the most exciting football games _______________ I have ever seen. 22．John told his parents about the cities and the people _______________ he had visited. 23．Maybe you leave a habit_______________ is driving your family crazy. 24．I’d skipped nearby Guilin, a dream place for tourists seeking the limestone mountain tops and dark waters of the Li River _______________ are pictured by artists in so many Chinese paintings. 25．The Chinese Ministry of Agriculture finds that between 2005 — when the government started a soil-testing program _______________ gives specific fertilizer recommendations to farmers — and 2011, fertilizer use dropped by 7.7 million tons. 二、完成句子 26．社交媒体和他们周围的人都会影响他们看待自己外貌的方式。(the way作先行词) Both social media and people around them influence ________________________________________________________________ . 27．《哈利·波特》是我曾经读过的最有趣的故事。 Harry Potter is the most interesting story _______________________________________________________________ . 28．当心！不要太靠近那间正在维修屋顶的房子。 Look out! Don’t get too close to the house ___________________________________________. 29．我们将学习一些写于唐朝的中国诗歌。 We are going to learn some Chinese poems _________________________ in the Tang Dynasty. 30．那些自信和乐观的人更有可能实现他们的目标。 Those _______________________________________are more likely to achieve their goals. 31． 中国是一个拥有5 000多年历史的国家。 China is a country __________________________________________________________ . 32．Your friends also influence__________________________________ (你看待自己外貌的方式). （ the way后接定语从句） 33．The woman is my mother. You are looking after her. → ______________________________________________is my mother. (用定语从句合并) 34．I live next door to a couple. Their children often make a lot of noise. →I live next door to a couple ______________________________________.(用定语从句合并) 35．The city is near the sea. The city is very beautiful. →The city ______________________________________________ .(用定语从句合并) 36． She lit a match and saw a Christmas tree. The tree was decorated very nicely. (用定语从句合并句子) _______________________________________________________________________________ 三、翻译 37．Over time, some plants develop features which help them to survive in particular conditions. (英译汉) _______________________________________________________________________________ 38．下午我去了当地一家展示加州（California）历史变迁的博物馆。（汉译英） _____________________________________________________________________________ 39．看过他的画的人都高度赞赏他独特的技能。(汉译英) ______________________________________________________________________________ 40．在异国他乡，使我不能入乡随俗的不是文化差异，而是无法吃上一口我从小熟悉的上海菜。（familiar）(汉译英) ______________________________________________________________________________ 41．尽管困难重重，科学家们希望获得更多有价值的发现，让人类延续生存，直到未来。 (汉译英) _____________________________________________________________________________ 42．他想为那些想学习英语的孩子树立一个好榜样。(使用定语从句) (汉译英) ______________________________________________________________________________ 43．节日是让我们放松心情、享受生活、暂时忘却工作的时刻。（occasions） (汉译英) ______________________________________________________________________________ 44．我们欢迎能给公司注入活力的人。(breathe life into) (汉译英) ______________________________________________________________________________ 参考答案： 1．that/which 【详解】考查定语从句。句意：这是我昨天买的那本书。“ I bought yesterday”是限制性定语从句，修饰先行词book，指物，关系词将其代入定语从句中作宾语，应用关系代词that或which引导该从句。故填that/which。 2．who 【详解】考查定语从句。句意：军队派出士兵挖出被困住的那些人。空处引导限制性定语从句，先行词为those，从句缺主语，用who引导从句。故填who。 3．who/that 【详解】考查定语从句。句意：它们被主人训练得很好，主人对照顾这些动物很有经验。空格处引导的是限制性定语从句，从句中缺少主语，先行词masters是人，因此空格处用关系代词who/that，故填who/that。 4．that/which 【详解】考查关系代词。句意：你还记得我们一起度过的日子吗？分析句子结构可知该句为定语从句，先行词为the days指物，在从句中充当spent的宾语，故填that/which。 5．that/which 【详解】考查定语从句。句意：他用捐赠的资金和自己的钱支付了英国政府要求的每个孩子50英镑。先行词为50 pounds ，作定语从句中required的宾语，关系代词为that或者which。故填that/which。 6．that 【详解】考查定语从句。句意：毕业后，他加入了为帮助老年人而成立的组织。空处引导定语从句，先行词是organization，指物，关系词替代先行词在从句中作主语且先行词被the very修饰，应用关系代词that引导。故填that。 7．that 【详解】考查定语从句。句意：她已经不是以前的她了。the woman为先行词，表示人，作定语从句中作表语，可以用关系代词that引导定语从句。故填that。 8．who 【详解】考查定语从句。句意：我将帮助那些有需要的人。此处引导限定性定语从句，先行词为不定代词those，指人，且定语从句中缺少主语，应用关系代词who引导。故填who。 9．that 【详解】考查定语从句。句意：我们的老师尽他所能帮助我们。空处引导定语从句，先行词是all，关系词在从句中作宾语，用关系代词that引导，故填that。 10．that/which 【详解】考查定语从句。句意：我叔叔是一家餐馆的老板，那家餐馆离市中心很近。the place为先行词，作定语从句中的主语，表示物，用关系代词that/which引导定语从句。故填that/which。 11．that/which 【详解】考查定语从句。句意：这位母亲做出了一个令所有孩子都满意的承诺。空处引导限制性定语从句，先行词为promise，指代事物，关系词在从句中作主语，应用关系动词that或which引导。故填that/which。 12．as 【详解】考查定语从句。句意：这是一件我们大家都喜欢的有趣的艺术品。空处引导的是定语从句，先行词an interesting work of art前有such修饰，所以这里用as引导从句，as在定语从句中作like的宾语。故填as。 13．which/that 【详解】考查定语从句。句意：我们年轻人应该去需要帮助的地方。先行the place，关系词替代先行词在定语从句中作主语，用关系代词that/which。故填that/which。 14．that/which 【详解】考查定语从句。句意：在每个交易周期结束后，有剩余碳配额的公司可以将其出售给其他公司。根据空后谓语动词have和can sell可知，空处引导限制性定语从句，修饰先行词companies，先行词指物，在从句中作主语，应用关系代词that/which。故填that/which。 15．that 【详解】考查定语从句。句意：ChopValue追求的不是典型的“开采-制造-废弃”经济模式，而是打造一个将废弃物转化为可用资源的经济模式。根据空前谓语动词seeks和空后谓语动词transforms，且句子不能构成并列句，空处引导定语从句，修饰先行词one，one指代an economy model，先行词指物，在从句中作主语，one为不定代词，其后定语从句不宜用which引导，应用关系代词that。故填that。 16．which/that 【详解】考查定语从句。句意：什么让某项活动成为一项运动？传统定义通常包括一些展示体育能力和力量的身体活动。根据空前谓语动词included和空后谓语动词show，且句子不能构成并列句，空处引导定语从句，修饰先行词physical activities，先行词指物，在从句中作主语，应用关系代词which/that。故填which/that。 17．that 18．that 19．that 20．that 21．that 22．that 23．that/which 24．that/which 25．that/which 【解析】17．考查定语从句。句意：我不喜欢你对她说话的方式。空处引导限制性定语从句，修饰先行词the way，关系词在从句中作状语，应用关系代词that引导从句。故填that。 18．考查定语从句。句意：他是我能找到做这项工作的唯一人选。空处引导限制性定语从句，修饰先行词the only man，先行词指人，定语从句中缺少宾语，且先行词被the only修饰，应用关系代词that引导从句。故填that。 19．考查定语从句。句意：他不再是五年前的那个人了。空处引导限制性定语从句，修饰先行词the man，先行词指人，定语从句中缺少表语，应用关系代词that引导从句。故填that。 20．考查定语从句。句意：我读的第一本英文小说是《乱世佳人》。空处引导限制性定语从句，修饰先行词English novel，先行词指物，定语从句中缺少宾语，且先行词被序数词修饰，应用关系代词that引导从句。故填that。 21．考查定语从句。句意：这是我见过的最激动人心的足球比赛之一。空处引导限制性定语从句，修饰先行词football games，先行词指物，定语从句中缺少宾语，且先行词被形容词最高级修饰，应用关系代词that引导从句。故填that。 22．考查定语从句。句意：约翰把他去过的城市、见过的人告诉了他的父母。空处引导限制性定语从句，修饰先行词the cities and the people，先行词既有人又有物，定语从句中缺少宾语，应用关系代词that引导从句。故填that。 23．考查定语从句。句意：也许你留下了一个让你的家人疯狂的习惯。空处引导限制性定语从句，修饰先行词a habit，先行词指物，定语从句中缺少主语，应用关系代词that或which引导从句。故填that/which。 24．考查定语从句。句意：我错过了附近的桂林，这里是游客们的梦想之地，他们寻找石灰岩的山顶和漓江的黑暗水域，这些都是艺术家们在许多中国画中描绘的。空处引导限制性定语从句，修饰先行词the limestone mountain tops and dark waters of the Li River，先行词指物，定语从句中缺少主语，应用关系代词that或which引导从句。故填that/which。 25．考查定语从句。句意：中国农业部发现，从2005年到2011年，化肥使用量减少了770万吨。2005年，中国政府启动了一项土壤测试项目，向农民提供具体的肥料建议。空处引导限制性定语从句，修饰先行词a soil-testing program，先行词指物，定语从句中缺少主语，应用关系代词that或which引导从句。故填that/which。 26．the way (that/ in which) they view their appearance 【详解】考查定语从句和短语。表示“方式”应用the way，后接限制性定语从句，从句主语为“他们”they；表示“看待”应用动词view，结合句中influence可知，句子使用一般现在时，主语是they，谓语动词使用原形形式，宾语“自己外貌”即“他们的外貌”their appearance。定语从句中主谓宾齐全，应用that、in which或省略关系词引导的定语从句。故填the way (that/in which) they view their appearance。 27．(that) I have ever read 【详解】考查定语从句和动词时态。此处为定语从句，先行词为 the most interesting story，表示“曾经读过”应用现在完成时have ever read，作定语从句的谓语动词，从句缺少宾语且先行词被形容词最高级the most interesting修饰，关系代词应用that，关系代词作宾语可以省略，故答案为(that) I have ever read。 28．whose roof is being repaired 【详解】考查定语从句、时态、语态和主谓一致。根据汉语提示可知，“正在维修屋顶”修饰的是房子“the house”，所以是定语从句部分；此处指的是“房子的屋顶正在维修”；“房子”与“屋顶（roof）”之间为所属关系，表示“……的”用关系代词whose作定语，修饰“屋顶”roof；“维修”为动词repair；“屋顶”与“维修”之间为被动关系，所以需要使用被动语态，根据“Look out! Don’t get too close to”以及句意可知，此处表示正在维修，所以用现在进行时的被动语态，从句主语为单数，所以be动词用is。故答案为whose roof is being repaired。 29．that/which were written 【详解】考查定语从句、动词时态和语态。此处为定语从句，先行词为Chinese poems，从句缺少主语，应用关系代词that/which，表示“写”应用动词write，与先行词Chinese poems之间为被动关系且动作发生在过去，应用一般过去时的被动语态。故答案为that/which were written。 30．who are confident and optimistic 【详解】考查定语从句。此处为定语从句，先行词为those，从句缺少主语，此处的those指代人，应用关系代词who，表示“自信的”应用形容词confident，表示“乐观的”应用形容词 optimistic，作表语。故答案为who are confident and optimistic。 31．which/that has a history of more than 5,000 years 【详解】考查定语从句以及时态和主谓一致。分析句子和句意可知，空处可用限制性定语从句来表达，修饰先行词“country”，“拥有”使用动词have，“5 000多年历史”译为a history of more than 5,000 years，关系词在从句中作主语，故可用关系代词which或that引导，由“is”和句意可知，本句为一般现在时，表示客观事实，其中which/that在从句中代替先行词“country”，在从句中作主语，故谓语动词用单数形式，故填which/that has a history of more than 5,000 years。 32．the way that/in which/you view your physical appearance 【详解】考查way作先行词的定语从句、动词时态和名词。句意：你的朋友也会影响你对自己外表的看法。由句意此处为way作先行词的定语从句，表示“看待”应用动词view，作谓语，由句意此处应用一般现在时，表示“外貌”应用名词physical appearance，作宾语，先行词way在定语从句中作状语，应用关系代词that/in which/不填，故答案为the way that/in which/you view your physical appearance。 33．The woman (that/who/whom) you are looking after 【详解】考查定语从句。句意：你正在照顾的女人是我的妈妈。由句意此处可以用限制性定语从句进行合并，You are looking after her转化为定语从句，her指代The woman，定语从句先行词为The woman，关系词指代先行词在从句中作宾语，应用关系代词that/who/whom，关系代词作宾语可以省略，主句为The woman is my mother，故答案为The woman (that/who/whom) you are looking after。 34．whose children often make a lot of noise 【详解】考查定语从句。句意：我住在一对夫妇的隔壁，他们的孩子经常制造很大的噪音。此处改为定语从句修饰先行词couple，关系词在从句作定语，应用whose。故填whose children often make a lot of noise。 35．which/that is near the sea is very beautiful 【详解】考查定语从句。句意：靠近大海的这个城市很漂亮。使用定语从句将两个句子进行合并，先行词为the city，定语从句中缺少主语，应用关系代词that/which，定语从句which/that is near the sea对先行词the city进行修饰，故答案为which/that is near the sea is very beautiful。 36．She lit a match and saw a Christmas tree which was decorated very nicely./She lit a match and saw a Christmas tree that was decorated very nicely. 【详解】考查定语从句。句意：她点燃了一根火柴，看到了一棵圣诞树。这棵树装饰得很漂亮。第二句中的The tree指的是前面的a Christmas tree，“The tree was decorated very nicely”的对a Christmas tree的修饰，因此“was decorated very nicely”可作定语从句，先行词是a Christmas tree，是物，因此用关系代词which/that引导定语从句，因此句子合并为“She lit a match and saw a Christmas tree which/that was decorated very nicely”。故答案为She lit a match and saw a Christmas tree which/that was decorated very nicely. 37．随着时间的推移，一些植物发展出有助于它们在特定条件下生存的特征。 【详解】考查句子结构。分析句子可知，该句为包含一个定语从句的主从复合句，Over time表示 “随着时间的推移”作状语，some plants“一些植物”为主句的主语，develop“发展处”为主句的谓语；features“特征”为主句的宾语；后接关系代词which引导的定语从句对features的修饰，在该从句中，help them to survive表示“帮助它们生存”；in particular conditions表示“在特定条件下”。故翻译为：随着时间的推移，一些植物发展出有助于它们在特定条件下生存的特征。 38．In the afternoon, I headed to a local museum that showed the historical changes in California. 【详解】考查一般过去时和定语从句。表示“下午”应用in the afternoon，句子应用一般过去时。表示“去某地”应用动词短语head to，表示“当地一家博物馆”应用a local museum。表示“展示”应用动词show，表示“加州历史变迁”应用the historical changes in California。“展示加州（California）历史变迁的”可以翻译为定语从句，修饰先行词为museum，在定语从句中作主语，可用关系代词that。再结合其它汉语意思，故翻译为In the afternoon, I headed to a local museum that showed the historical changes in California. 39．Those who saw his paintings all sang high praises for his unique skill/skills. 【详解】考查定语从句、动词短语、时态。因句子表示的是过去发生的动作，谓语动词使用一般过去时；“看过他的画的人”可翻译为“Those who saw his paintings”，其中“who saw his paintings”是定语从句，修饰先行词“Those”；“高度赞赏”可翻译为“sing high praises for”，“独特的技能”可翻译为“unique skill/skills”。整句话连起来就是：Those who saw his paintings all sang high praises for his unique skill/skills. 40．In a foreign country, what prevents me from fitting into the locals/the new environment/going native was not the culture gap/difference, but the inability/failure to have a bite of Shanghai cuisine/food/dishes that I had been familiar with/that was familiar to me since childhood. 【详解】考查主语从句以及定语从句。“在异国他乡”可以翻译为“in a foreign country”，为介词短语在句中作状语。句子为主系表结构，句子表示过去的事实，所以用一般过去时态。主语从句充当主语，“使我不能入乡随俗的”翻译为“what prevents me from fitting into the locals/the new environment/going native”，what引导主语从句，在从句中充当主语，prevent sb. from doing sth.“阻止某人做某事”。主语从句描述一般事实，所以用一般现在时态。not…but…“不是……而是……”；“文化差异”可以翻译为“the culture gap/difference”。the inability/failure to do sth.“无法做某事”，“吃上一口上海菜”可以翻译为“have a bite of Shanghai cuisine/food/dishes”，后面接定语从句修饰先行词cuisine/food/dishes，且可以在定语从句中作宾语，也可以做主语，所以用关系代词that引导；“某人熟悉某事”可以用短语“sb.be familiar with sth.”，“某事为某人所熟知”可以翻译为“sth.be familiar to sb.”“从小”可以翻译为“since childhood”，主句为一般过去时态，所以此处从句的时态为过去完成时，表示发生在过去的过去，所以定语从句可以翻译为“that I had been familiar with/that was familiar to me since childhood”。故翻译为In a foreign country, what prevents me from fitting into the locals/the new environment/going native was not the culture gap/difference, but the inability/failure to have a bite of Shanghai cuisine/food/dishes that I had been familiar with/that was familiar to me since childhood. 41．Despite the difficulties, scientists hope to get more valuable discoveries that will enable humans to survive well into the future. 【详解】考查定语从句。“尽管”使用介词despite，“困难重重”使用名词复数difficulties，作介词宾语，“科学家们”使用名词复数scientists，“希望做某事”使用动词短语hope to do sth，“获得”使用动词get，“更多有价值的发现”译为more valuable discoveries，“让人类延续生存，直到未来”译为一个定语从句，修饰名词discoveries，“让某人能够做某事”使用动词短语enable sb to do sth，“延续生存，直到未来”使用动词短语survive well into the future，关系词在从句中作主语，使用关系代词that引导，主句是描述一个事实，应用一般现在时，从句是描述将来的事情，用一般将来时，故翻译为：Despite the difficulties, scientists hope to get more valuable discoveries that will enable humans to survive well into the future. 42．He wants to set a good example for those children who want to learn English. 【详解】考查固定短语和定语从句、时态。主语为he；表示“想要”短语为want to do sth.；表示“为……树立一个好榜样”短语为set a good example for，表示“那些孩子”为those children，后跟who引导定语从句；表示“想学习英语”翻译为want to learn English。句子描述客观事实，用一般现在时，先行词children作从句的主语，用who引导从句。故翻译为He wants to set a good example for those children who want to learn English. 43．Festivals are occasions that allow us to relax and enjoy life, and forget about our work for a little while. 【详解】考查短语、时态和定语从句。表示“时刻”应用名词occasion，在定语从句中作主语，所以用关系代词which或that引导。表示“让某人做某事”短语为allow sb. to do；表示“忘记”短语为forget about 。表示“暂时”短语为for a little while。陈述客观事实，用一般现在时。故翻译为Festivals are occasions that allow us to relax and enjoy life, and forget about our work for a little while. 44．We welcome people who can breathe life into the company. 【详解】考查动词、名词和定语从句。主语“我们”用人称代词we，谓语“欢迎”用动词welcome，描述习惯性行为用一般现在时态， “能给公司注入活力的人”作宾语，其中“能给公司注入活力的”作定语，修饰名词people，可处理为限制性定语从句who can breathe life into the company。综上，全句译为：We welcome people who can breathe life into the company. 原创精品资源学科网独家享有版权，侵权必究！2 学科网（北京）股份有限公司 学科网（北京）股份有限公司 学科网（北京）股份有限公司 $$