Unit 6 Period 4 课时学案 单元语法讲练(Using language)-【名师导航】2026-2027学年高中英语选择性必修第二册教师用书word（外研版）

本讲义聚焦“no matter＋疑问词”和“疑问词＋-ever”引导的让步状语从句这一核心语法点，通过美文诵读引导学生初步感知，系统梳理两者结构、互换规则及疑问词+-ever引导名词性从句时的不可互换情形，并结合optimistic等词汇和It takes...to do sth.句型拓展，构建“感知-理解-应用”的学习支架。 资料以“主题引领、语用为本”为特色，美文诵读融入野生动物保护主题提升文化意识，语法讲练结合真实语境（如单句写作“无论你到哪里”）培养语言能力，通过辨析两者用法差异发展思维品质。课中助力教师系统授课，课后多样化作业（短文语境填空、完形填空等）帮助学生自主巩固，查漏补缺。

Period 4　 单元语法讲练(Using language) “no matter＋疑问词”和“疑问词＋-ever”引导的让步状语从句 美文诵读 语法体悟 ①Wherever you go，you will hear that the number of wild animals is decreasing at an alarming rate．②Whenever you watch TV news，you will see some of them are in danger of dying out．Therefore，③however difficult it is，we must take effective measures to protect wildlife．For example，④whoever illegally hunts animals should be severely punished．Besides，we should cherish ⑤whatever we are still having and protect their habitats． 以上段落中斜体部分均是“疑问词＋-ever”结构；其中句①中的Wherever、句②中的Whenever和句③中的however均引导让步状语从句，分别可以转化成“No matter where”“No matter when”，和“no matter how”；句④中的whoever和句⑤中的whatever分别引导主语从句和宾语从句。 一、“no matter＋疑问词”引导的让步状语从句 “no matter＋疑问词(what/who/which/when/where/how 等)”，意为“无论……”，常引导让步状语从句。 No matter which book you borrow，you must return it in a week． 无论你借哪本书，都必须在一周内归还。 No matter what happens，he will not mind． 无论发生什么，他都不会介意。 He carries a book in his bag，no matter where he goes． 他不管去哪里，包里都带一本书。 [名师点津]　no matter 也可以与 whether 连用，表示“不论是否” 。 No matter whether it snows or not，I shall start on the journey． 不论是否下雪，我都将出发去旅行。 单句语法填空 ①No matter how well you can drive，you must drive carefully． ②No matter what may happen，they've decided to leave this evening． ③No matter who you may be，you have no right to do such a thing． 二、“疑问词＋-ever”引导的让步状语从句 在英语中，“疑问词＋-ever”可以引导让步状语从句，意为“无论……，不管……”，可与“no matter＋疑问词”相互替换。 Wherever (＝No matter where) he is，he makes it a rule to give his mother a call every day． 无论在哪儿，他都把每天给妈妈打电话当成一个惯例。 However (＝ No matter how) carefully I explained，she still didn't understand． 无论我解释得多么仔细，她还是不明白。 We can go on Tuesday or Friday，whichever (＝no matter which) you prefer． 我们可以周二或周五去，随你更喜欢哪个时间。 单句写作 ①所以，不论你是谁，感谢你不经意的善举，那不仅帮助了我妈妈，还让她开心了一整天。 So，whoever/no matter who you are，thank you for the random act of kindness that not only helped my mother out but made her day too． ②无论你到哪里，文化差异都会出现，所以当访问另一个国家时，你应该意识到这些差异并尊重它们。 Cultural differences occur wherever/no matter where you go，so when visiting another country，you should be aware of those differences and respect them． ③无论我在生活中何时遇到挫折，我总会发现母亲在不惜一切代价支持着我。 No matter when/Whenever I meet with setbacks in life，I will always find my mother supporting me no matter what/whatever it takes． 三、“疑问词 ＋-ever”不可与“no matter ＋疑问词”互换的情形 whatever，whoever，wherever 和whichever除了引导让步状语从句外，还可以引导名词性从句。当引导名词性从句时，不可与no matter what，no matter who，no matter where 和no matter which 互换。 Whatever grade the team received would be shared by both students． 无论这个团队获得什么样的成绩，都将由两个学生共享。 (whatever引导主语从句) Eat either cake you like and leave the other for whoever comes late． 吃你喜欢的任意一块蛋糕，将剩下的那块留给来晚的人。(whoever引导宾语从句) You can take whichever seat you like． 你可以坐你喜欢的任意一个座位。(whichever引导宾语从句) 单句语法填空/单句写作 ①Whatever arouses his interest can be found in the school library． ②I wanted to be perfect at whatever I did，which obviously in life is not possible，but it consumed me． ③You may invite whoever/whomever you like． ④锻炼让你更加清醒，并让你准备好去处理一天中摆在你面前的任何事情。 Exercising makes you more awake and ready to handle whatever is ahead of you for the day． 1．(教材原句)Robinson Crusoe is a clever and optimistic man． *optimistic adj．乐观的；乐观主义的(optimism n．乐观，乐观主义) be optimistic about.../that...　　　 对……持乐观态度 单句语法填空/单句写作 ①There was optimism (optimistic) that an agreement could be reached． ②But I was unrealistically optimistic about what I could achieve． ③(读后续写之情感描写)她假装对即将到来的考试保持镇定和乐观，但实际上她从头到脚都很紧张。 She pretended to be calm and optimistic about the upcoming exam，but as a matter of fact she was so nervous from head to toe． 2．(教材原句)How do people and organisations react to these crises? *react v．(作出)反应(reaction n．反应；回应) (1)react to sb．/sth．　 对某人/某事物作出反应/回应 react with 与……起(化学)反应 react against 反对，反抗 (2)reaction to sb．/sth． 对某人/某事物的反应/回应 单句语法填空/单句写作 ①Anger is the natural reaction (react) we experience when we feel threatened or disappointed． ②(应用文写作之发言稿)Never mind challenges，upsets or even failures，because it is how we react to them that really counts． ③Children sometimes react against the things their parents believe in． ④如何回应成功和失败会对我们的生活产生重要的影响。 How we react to success and failure makes a great difference to our life． 3．(教材原句)Plus，it also includes a free poster illustrating new plans to get rid of the Ebola virus once and for all． *get rid of摆脱，除去 rid...of... 　　 去除；清除 rid oneself of... 摆脱……；从……中解脱 单句语法填空/单句写作 ①School uniforms are traditional in Britain，but some schools are starting to get rid of them． ②Thanks to his research，the UN has more tools in the battle to rid the world of hunger． ③(应用文写作之建议信)其次，到户外去和你的朋友们玩团队游戏，这是一种让你摆脱情绪的有效方法。 Second，go outdoors and play team games with your friends，which is an effective way to rid yourself of your emotions． (教材原句)It takes great patience for Robinson Crusoe to survive on the island． *It takes/took...to do sth． (1)It takes/took (sb．) some time to do sth．　　　　 (某人)花费多长时间做某事 It takes/took courage/patience...to do sth． 做某事需要勇气/耐心…… (2)sb．＋spend(s) time/money on sth．/(in) doing sth． 某人花费时间/金钱在某物上/做某事 (3)(doing) sth．＋cost(s) sb．time/money (做)某事花费某人时间/金钱 (4)sb．＋pays/paid sb．money for sth． 某人为某物付给某人钱 单句语法填空/单句写作 ①It takes sunscreen about fifteen minutes to start(start) working，and that's plenty of time for your skin to absorb a day's worth of Vitamin D． ②To get really good at something，one needs to spend at least 10，000 hours practicing (practice)． ③I was ready to pay for my bananas at the grocery one night when fear seized me． ④尽管有他的远程指导，我还是花了很多精力独自完成这个课题。 It still took me hard work to finish the project alone despite his remote guidance． 课时提升作业(十七) (Unit 6　Using language) (建议用时：45分钟　总分：97分) Ⅰ．品句填词(共5小题；每小题1.5分，满分7.5分) 1．It was his optimistic (乐观的) attitude to life and hard work that finally led him to his successful career． 2．Knowing basic first-aid techniques will help you react (作出反应) quickly to emergencies． 3．The experienced hiker (徒步旅行者) navigated carefully through the dense forest，using his map and compass． 4．Before embarking on the long journey，the truck driver ensured that the fuel (燃料) tank was fully topped up． 5．The city is implementing new measures to reduce energy consumption (消耗量) and promote sustainability． Ⅱ．单句语法填空(共8小题；每小题1.5分，满分12分) 1．No matter where I buy them，though，one steamer basket is rarely enough... 2．Whenever I tell people that I teach English at the Berlin Zoo，I almost always get a questioning look． 3．But it was time to take the leap (飞跃)，however heartbreaking it would be． 4．Whatever it is，no matter how small it might seem，write it down． 5．Knowing some tips will help ensure that you have an enjoyable meal with friends or family—no matter where you are in the world． 6．He always participated in whatever they were doing to the best of his ability． 7．He wasn't mean or abusive; he just gave me the impression that he could do whatever project we dreamed up better if he did it alone． 8．Unlike friendships that can fade or break，I know I'll always be connected to my mother no matter what I face． Ⅲ．完成句子(共5小题；每小题2分，满分10分) 1．无论我何时遇到困难，你总是在我身边鼓励我，让我振作起来。 Whenever/No matter when I encounter difficulties，you are always by my side encouraging me to lift my spirits． 2．无论你去哪里，同样的事情对每个人都很重要，那就是家人和友谊。 No matter where/Wherever you go，the same things matter to everyone—family and friendship． 3．无论你喜欢做什么，都有办法在地球日参加各种活动。 No matter what/Whatever you like to do，there is a way to get involved in various activities on Earth Day． 4．无论我们会遇到多么困难的问题，我们都应该持一种乐观态度。 However/No matter how difficult the problem we may come across is，we should hold an optimistic view． 5．不管你喜欢哪一个，总会有一个奇妙无比的主题公园让你流连忘返。 Whichever/No matter which you like，there is an incredible theme park that will appeal to you． Ⅳ．短文语境填空(共10小题；每小题1.5分，满分15分) 用“no matter＋疑问词/疑问词＋-ever”完成语篇 When I was tidying my house the other day，I came across several love letters my father had written to my mother when they were young，which made me surprised and moved．One of them read as follows： I have searched a thousand years，and I have cried a thousand tears．I have found everything I need—you are everything to me． 1．Whenever/No matter when I see you，I will always feel very content and thrilled．2．Wherever/No matter where you go，my heart follows you forever．I promise 3．whoever/no matter who dares to hurt you，I am determined to stand up for you．4．Whatever/No matter what you want，I will try my best to satisfy your desire 5．however/no matter how much it may cost; 6．whenever/no matter when you need me，I will stay by your side; 7．whichever/no matter which way you choose，I will respect your decision and manage to assist you．8．However/No matter how many difficulties we may encounter，9．no matter whether you are 25 or 52 years old，I will go on loving you through thick and thin．I believe we are able to cope with 10．whatever happens as long as we go hand in hand． Ⅰ．阅读理解(共4小题；每小题2.5分，满分10分) Animals going extinct on the Earth is a serious issue．When animals are hunted for their fur or skin for fashion，it is even worse，since it's not even for a matter of human survival．That's why a London zoo decided to make a powerful statement at the Siamese crocodile enclosure (围栏)． When visitors come in expecting to see a crocodile，they're greeted with the handbag instead，making a very effective and powerful point about illegal wildlife trade and the harm it has on the species involved． A sign by the enclosure reads，“This bag used to be found swimming in slow-moving rivers and streams across Southeast Asia and Indonesia．Over the last 75 years，more than 80% of Siamese crocodiles have disappeared．Many，like this one，were hunted for their skins as part of the illegal wildlife trade．” Native to parts of Southeast Asia，Siamese crocodiles are critically endangered and have become virtually extinct in the wild．Due to hunting as well as habitat loss，they are now absent from nearly 99% of their original range．A huge part of the decline of population is due to humans using their wetland habitat for rice farming，and things only took a turn for the worse when large-scale hunting for their skins for commercial purposes began in the 1950s． According to Benjamin Tapley，leader of reptiles and amphibians at ZSL London Zoo，the particular handbag that is on display at the zoo was confiscated at a UK airport，which was being transported illegally，likely as part of the illegal wildlife trade network． Tapley told The Huffington Post，“We made this exhibit，within ZSL London Zoo's Reptile House，to draw visitors' attention to the destructive impact the Illegal Wildlife Trade(IWT)is having on species around the world．At ZSL，we are working globally with governments and local communities to protect wildlife，support law enforcement (执法) that targets illegal trade networks，empower local communities affected by IWT and reduce demand for threatened wildlife．” 【语篇解读】　本文是一篇新闻报道。文章主要报道了伦敦动物园如何通过展览等方式让公众了解动物灭绝的严重问题，特别是非法野生动物贸易对暹罗鳄等物种的危害。 1．Why does the sign say this handbag used to swim? A．It is made of a crocodile's skin． B．It is made into a crocodile shape． C．It is light enough to float on water． D．It was kept in flowing river at first． A　[推理判断题。根据第三段“A sign by the enclosure reads，‘This bag used to be found swimming in slow-moving rivers and streams across Southeast Asia and Indonesia...Many，like this one，were hunted for their skins as part of the illegal wildlife trade．’”可知，手提包是由鳄鱼皮制成的，因此可以联想到这个手提包“曾经游泳”是因为它原本是属于鳄鱼的皮肤。故选A。] 2．What is paragraph 4 mainly about? A．Wildly hunting of Siamese crocodiles． B．Commercial value of Siamese crocodiles． C．Destruction of Siamese crocodiles' habitats． D．Causes to make Siamese crocodiles endangered． D　[段落大意题。第四段详细描述了由于猎杀和栖息地丧失，暹罗鳄现在从其原始栖息地消失了近99%，并指出数量下降的一个很大原因是人类将它们的湿地栖息地用于水稻种植，以及为了商业目的的大规模猎杀。这些内容都直接指向了暹罗鳄濒危的原因，因此是段落的主要内容。故选D。] 3．What does the underlined word “confiscated” in paragraph 5 mean? A．Sold．　　　　　　　 B．Bought． C．Seized． D．Stolen． C　[词义猜测题。根据画线单词下文“at a UK airport，which was being transported illegally，likely as part of the illegal wildlife trade network．”可知，这个手提包是在英国机场被没收的，画线单词和“抓住，没收”意思相似。故选C。] 4．What does Tapley's words focus on? A．The harm IWT caused． B．The purpose to show the handbag． C．The importance of wildlife protection． D．The crisis endangered animals are facing． B　[推理判断题。根据最后一段可知，Tapley的话重点解释了为何要在动物园展示这个手提包，即展示手提包的目的。故选B。] Ⅱ．阅读七选五(共5小题；每小题2.5分，满分12.5分) With busy schedules，we can often forget about ways to stay sustainable on campus． 1 So，here are some easy tips to be more eco-friendly on campus． 2 Whenever you head to stores or supermarkets，you will find that they sell reusable bags．But you are recommended to bring the ones you already own in your dorm，because it can help reduce the amount of bags accumulating in the corner of your dorm． Bring a reusable water bottle．If you are someone who likes to drink water with your meal，consider bringing a reusable water bottle to the dining halls．All of the vending machines come，equipped with a little sign． 3 However，the Earth says otherwise with all of those non-biodegradable plastic cups filling landfills． Take the stairs as much as possible．If you find yourself able to，take the stairs to your classroom and dorm．Not only does taking the stairs allow for some minimal yet mighty exercise，but it also reduces energy use from the elevator． 4 Turn off the lights in time． 5 Although you wake up too late，and you are in a rush to get to your class in the early morning，don't mind taking that extra second to press the switch．Every time you turn off the lights，it means something to the Earth． A．It says not to bring personal bottles． B．Use one of the eco-friendly bags you have． C．It is of great importance to conserve energy． D．Purchase some reusable bags whenever possible． E．Besides，we don't know how to reduce our waste in many cases． F．It allows others who need it more to get to their classes on time． G．The reusable glass bottles can be used to hold some plants and flowers． 【语篇解读】　本文是一篇说明文。文章主要介绍了一些在校园里更加环保的建议。 1．E　[根据上文“With busy schedules，we can often forget about ways to stay sustainable on campus．”可知，在校园里，我们经常会忘记可持续发展的方法。E项承接上文，说明除此之外，在很多情况下，我们也不知道如何减少浪费，并引出下文介绍在校园里更环保的建议，符合题意。故选E。] 2．B　[根据下文“Whenever you head to stores or supermarkets，you will find that they sell reusable bags．But you are recommended to bring the ones you already own in your dorm，because it can help reduce the amount of bags accumulating in the corner of your dorm．”可知，本段介绍的建议是使用自己已经有的袋子，以减少宿舍角落里积累的袋子数量。B项引出下文内容，适合作为段落标题句。故选B。] 3．A　[根据上文“All of the vending machines come，equipped with a little sign．”以及下文“However，the Earth says otherwise with all of those non-biodegradable plastic cups filling landfills．”可知，自动售货机都配备小标志……但是不可生物降解的塑料杯却变得非常多，填满了垃圾填埋场。A项中的It指代上文的a little sign。A项承上启下，符合题意。故选A。] 4．F　[根据上文“Not only does taking the stairs allow for some minimal yet mighty exercise，but it also reduces energy use from the elevator．”可知，走楼梯有益处。F项继续介绍不坐电梯、走楼梯的好处，与上文内容并列，符合题意。故选F。] 5．C　[根据上文“Turn off the lights in time．”可知，本段介绍的建议是及时关灯，再根据下文“Every time you turn off the lights，it means something to the Earth．”可知，及时关灯有益处。C项承接上文，并引出下文对于关灯益处的介绍，符合题意。故选C。] Ⅲ．完形填空(共15小题；每小题1分，满分15分) Here I was，sitting in the roller coaster (过山车) cart of Kingda Ka in New Jersey，the tallest and second fastest roller coaster on Earth．My friends shouted in excitement，while I shakily 1 my hands on my shorts．“How can you be so excited when...” My words caught in my throat and melted into screams as the roller coaster suddenly 2 forward．It was the fastest 3 I had ever experienced in my life：128 miles per hour．I screamed at the top of my 4 as fear froze me up from inside．We rapidly moved up the skinny hump (驼峰) rising into the clouds at a ninety degree angle，having crossed the track bringing us forward in mere 5 ． 6 ，close to the highest part of the hump，I 7 a little．My screams became less terrified and more energetic．Once we reached the 8 of the hump，I could almost touch the sky． And then we were spiraling (盘旋) downwards，curving and twisting and 9 towards Earth at the same speed． 10 I realized it，we had already met the ground．It was a thirty-second-long ride．I managed to 11 the entire ride without a breakdown． I gasped in surprise．It was over．I had not only survived the ride—I had 12 it．My friend turned to me，her eyes 13 ．“Are you ready for the next roller coaster？” My head felt light as we walked away from the ride spinning with something I didn't 14 recognize．It took me a few minutes to put a name to it—thrill．“I'm ready for anything．” Until today，that 15 ride that I went on 20 years ago is still kept alive in my memory． 【语篇解读】　本文是一篇记叙文。作者回忆了自己20年前在新泽西州的Kingda Ka过山车上的惊险体验。 1．A．wiped B．waved C．joined D．cleaned A　[根据上文“the tallest and second fastest roller coaster on Earth．My friends shouted in excitement”可知，坐在过山车上，作者紧张地把手在短裤上擦了擦。故选A。] 2．A．removed B．rocketed C．struggled D．marched B　[根据下文“128 miles per hour”可知，过山车时速很快，此处指突然猛地向前冲去。故选B。] 3．A．launch B．operation C．ride D．flight C　[根据下文“It was a thirty-second-long ride．”可知，此处是信息词ride的词汇复现。故选C。] 4．A．cheeks B．throat C．heart D．lungs D　[根据上文“I screamed”和常识可知，尖叫需要用到肺部来发出声音。且at the top of one's lungs为固定短语，意为“声嘶力竭地”。故选D。] 5．A．minutes B．hours C．seconds D．occasions C　[根据下文“It was a thirty-second-long ride．”可知，过山车仅用了几秒钟就穿过了轨道。故选C。] 6．A．Instead B．Meanwhile C．Therefore D．However D　[前面提到过山车迅速上升，后面则提到在接近最高点的时候，作者稍微平静了一些。因此，需要用一个表示转折的连词来连接这两个句子。故选D。] 7．A．broke down B．calmed down C．made up D．dressed up B　[根据下文“My screams became less terrified and more energetic．”可知，作者稍微平静了一些。故选B。] 8．A．top B．point C．track D．location A　[根据下文“I could almost touch the sky”可知，作者到达了驼峰的顶端。故选A。] 9．A．swinging B．escaping C．shooting D．roaring C　[根据上文“We rapidly moved up the skinny hump rising into the clouds at a ninety degree angle”可知，过山车下来的时候速度也很快，因此是飞驰而下。故选C。] 10．A．After B．Though C．Before D．While C　[此处表示“在作者意识到之前已经到达了地面”，before表示“在……之前”，引导时间状语从句。故选C。] 11．A．take off B．carry on C．go through D．get through D　[根据“we had already met the ground”可知，作者完成了整个过山车旅程。故选D。] 12．A．enjoyed B．deserved C．hated D．confirmed A　[根据下文“My head felt light as we walked away from the ride spinning”和作者感受到刺激可知，作者在坐过山车的过程中玩得很开心。故选A。] 13．A．bright B．wet C．closed D．open A　[根据上文“My friends shouted in excitement”以及下文“Are you ready for the next roller coaster? ”可知，作者的朋友在整个过程中是兴奋的，因此此处应该是指她的眼睛发亮。故选A。] 14．A．gradually B．absolutely C．immediately D．eventually C　[根据下文“It took me a few minutes to put a name to it—thrill．”可知，作者并没有立刻意识到坐完过山车后的感觉。故选C。] 15．A．romantic B．thrilling C．alarming D．awkward B　[根据上文“It took me a few minutes to put a name to it—thrill．”可知，作者认为20年前的那次过山车之旅是刺激的。故选B。] Ⅳ．语法填空(共10小题；每小题1.5分，满分15分) A new study suggests Jupiter's icy moon (卫星) Europa produces much less oxygen than previously thought．The study 1． (base) on the data 2． (collect) by NASA's Juno spacecraft． The study involved Juno's instruments measuring levels of oxygen 3． hydrogen molecules (分子) coming from Europa's atmosphere．The data showed the icy moon produces about 1，000 tons of oxygen every 24 hours．NASA said that would be enough 4． (keep) a million humans breathing for a day． However，the space agency noted those estimates of oxygen were much less than those measured in earlier studies about the moon．Europa is a little 5． (small) than the Earth's moon．But it is still one of the largest moons in 6． (we) solar system．NASA observations have suggested 7． ocean exists beneath the thick layer of ice on Europa's surface．Scientists estimate the moon's ocean may contain a large amount of water，8． is twice as much as the Earth's oceans． Since Europa was believed to have a large ocean under its surface，9． (researcher) in the past identified it as a good candidate to hold the right conditions to support some form of life．That data came 10． (main) from telescope observations of oxygen levels existing in the moon's icy surface．The new lower estimates of oxygen do not support the earlier observations．The team involved in the study said，in the future，more research would be needed to confirm the latest findings． 【语篇解读】　本文是一篇说明文。文章是关于木星的冰卫星——木卫二(Europa)的最新研究。研究表明，木卫二产生的氧气比之前认为的要少得多。文章讨论了这一发现对理解木卫二大气成分以及其潜在生命支持能力的影响。 1．was based　[考查动词的时态、语态和主谓一致。base在句中充当谓语，句子表达的是过去发生的事，base的固定用法是be based on，因此使用一般过去时的被动语态。The study为单数，be动词用was。故填was based。] 2．collected　[考查非谓语动词。句子已经存在谓语，所以collect需要转化为非谓语，collect和data之间是被动关系，因此使用过去分词作定语。故填collected。] 3．and　[考查连词。结合句意可知，这个仪器会检测氧气和氢气的水平，此处表示并列关系。故填and。] 4．to keep　[考查非谓语动词。句子已经存在系动词would be，所以keep需要转化为非谓语，且enough需要与不定式来搭配，即enough to do...“足够做……”。故填to keep。] 5．smaller　[考查形容词比较级。than是比较级的标志词，此处应该将small变成其比较级形式。故填smaller。] 6．our　[考查代词。此处需要使用形容词性物主代词来表示“我们的”。故填our。] 7．an　[考查冠词。此处泛指一个海洋，应用不定冠词来修饰，且ocean的发音是以元音音素开头，应用an。故填an。] 8．which　[考查定语从句。该句为非限制性定语从句，先行词是water，关系词在从句中充当主语。故填which。] 9．researchers　[考查名词复数。researcher是可数名词，此处需要使用复数形式来表示“研究者们”，作主语。故填researchers。] 10．mainly　[考查副词。此处需要使用副词来修饰动词came，作状语。故填mainly。] 1 / 15 学科网（北京）股份有限公司 $