新人教新目标初中英语八年级上册Unit 7 Will people have robots知识讲解及单元检测
人教新目标英语八年级上册Unit7单元知识点解析
人教新目标英语八年级上册Unit 7 Will people have robots?一、重点单词paper n. 纸，纸张future n. 将来，未来environment n. 环境earth n. 地球，世界space n. 太空，空间human adj. 人的 n. 人already adv. 已经，早已disagree v. 不同意，持不同意见during prep. 在……期间pollution n. 污染，污染物pollute v. 污染planet n. 行星peace n. 和平even adv. 甚至，连，愈加dangerous adj. 有危险的，不安全的believe v. 相信，认为有可能possible adj. 可能的holiday n. 假期，假日不可数名词paper pollution environment water air time spacepollute动词----pollution名词predicte动词---prediction名词peace名词----peaceful形容词danger名词----dangerous形容词factory名词-----复数factories agree-----反义词 disagreefall---过去式fellinside----反义词 outsidepossible----反义词impossible probable形容词-----副词probably human----复数humans前面加an 的名词有astronaunt apartment engineer article二、重点短语on computers在电脑上on paper在纸上a piece of paper 一张纸in the future 在未来in 100 years在一百年以后live to be 200 years old活到200岁in people’s home 在人们家里in an apartment在公寓free time空闲时间in danger处于危险之中in the world 在世界上on the earth在地球上play a part in sth参与某事on a space station在太空站in space在太空look for寻找computer pro电脑编程员grammer over and over again反复地get bored感到厌烦的wake up醒来look like看起来像fall down倒塌，摔倒in the country在乡村，在国家take a train to school坐火车去上学human servants人类仆人fly rockets to the moon放飞火箭到月球in dirty or dangerous places在脏或者危险的地方do simple jobs 做简单的工作do same jobs 做同样的工作the same …as …和…一样…will be polluted 将会被污染in great danger 处于极度危险中as soon(quickly/fast) as possible 尽可能快的 if possible 如果可能what will happen 什么将会发生fly to +地点==go to +地点 by plane/airwill+动词原形将要做 fewer/more +可数名词复数更少/更多……less/more+不可数名词更少/更多……try to do sth尽力做某事have to do sth不得不做某事agree with sb同意某人的意见such+名词如此……play a part in doing sth参与做某事make sb do sth让某人做某事help sb with sth帮助某人某事There will be +主语+其他将会有……There is/are+sb./sth.+doing sth 有……正在做某事It is +形容词+for sb +to do sth 做某事对某人来说是怎样的三、重点句子：1. -----What will the future be like ?将来会是什么样子的？----- Cities will be more pollution.And there will be fewer trees. 将来城市会污染得更严重，树木将会少得多。
新目标人教版英语八年级上册《Unit 7 Will people have robots？》听力试题及答案
Unit 6 听力限时：20分钟满分：20分一、听句子，选择合适的答语(每小题1分，共5分)1. A. I will be a doctor. B. I don't think so. C. I will work near here.2. A. Yes, they will. B. No, they won't. C. Maybe in 30 years.3. A. A rocket. B. A plane. C. A space station.4. A. No，there will be. B. Yes，there won't. C. Yes, there will.5. A. I play the guitar. B. I will play basketball. C. I played football.二、听短对话，选择正确的答案(每小题1分，共5分)6. What are they talking about?A. The schoolwork.B. The future.C. The school.7. Where will the man live?A. In Shanghai.B. In Harbin.C. In Hangzhou.8. Who think(s) there will be more trees in twenty years?A. The woman.B. The man.C. Both of them.9. Where will the girl study?A. At home on computers.B. At school.C. At home on TV.10. Why doesn't the man hope there will be more robots in factories?A. Because robots won't do the work well.B. Because more people will have no jobs.C. Because there will be less pollution.三、听两段长对话，选出能回答所给问题的最佳答案(每小题1分，共5分) 听第一段对话，并回答11～12题。
2013新版人教新目标八年级上期英语_Unit7_Will_people_have_robots全单元课件
e.g. I believe that you can finish the work on time. 我相信你会按时完成工作。
9. shape n. 形状 e.g. What is the shape of your kite? 你的风筝是什么形状的？ 10. hundreds of 许多；大量= lots of e.g. There are hundreds of flags in front of the building. 在那个高楼前有很多旗帜。 【辨析】 具体数字+ hundred 如：three hundred 三百
11. over and over again 反复地；多次 还可以说over and over e.g. They sang the song over and over. 他们反复地唱那首歌。 He called over and over again but nobody answered. 他多次打电话但没有人接。
7. disagree v. 不同意 ；持不同意见； 有分歧 前缀(dis) + agree (同意)→disagree
e.g. My father agrees, but my mother disagrees. 我爸爸同意，但我妈妈不同意。
8. believe v. 相信；认为有可能 believe sb. 相信某人说的话 believe + that 从句
I think they look like humans. They can do anything men can do.
Sounds interesting.
4. dangerous adj. 有危险的；不安全的 名词danger +后缀ous → dangerous e.g. Some animals are in great danger. 一些动物处于极大的危险中。 Lions are dangerous animals. 狮子是危险的动物。
人教新目标八年级英语上册Unit 7 Will people have robots知识点汇总
知识点回顾语法:一般将来时一般将来时: 表示在将来某个时间要发生的动作或状态, 三种基本结构：⑴will +V. ⑵be going to +V. ⑶be + V.ing一般将来时的时间状语：in + 时间，in the future，next + 时间1.Will +动词原型eg. (1) Kids will study at home. (2) Everything will be free. (3) It will be sunny tomorrow.否定结构: won’t(will not)+动词原型They won’t visit Shanghai.疑问句结构: Will kids study at home2.由“be going to + 动词原形”构成，表示将要发生的事或打算、计划、决定要做到事情。
Eg: Look at the black clouds!It is going to rain . 看那些乌云要下雨了。
We are going to take a walk after supper. 饭后我们要去散步3.be+v.ing某些动词的进行时态表示将要发生的动作。
go, come, leave, meet, start, begin, finish, fly, arrive…..eg. My father is leaving for Shanghai tomorrow. 我爸爸明天要去上海The shops are crowded.Because the Spring Festival is coming. 商店很拥挤因为春节就要到了“There be”句型的一般将来时肯定句：There will be +名词+其他成份[注意]：无论后面加单数名词或复数形式，be都必须用原形。
要点讲解Will there重点短语it will be difficult to do sth.不同意某人重点搭配重点短语Section A:1.play a part in saving the earth2.in 100 years3.on computers4.live to be….years old5.less free time6.world peace7.be free8.in great danger9.in the future10.move to other planetsSection B:1.fly rockets to the moon乘火箭到月球→fly up into the sky2.on a space station3.be able to…4.look for5.look like6.take a holiday7.the meaning of…..8.wake up….9.one day10.hundreds of11.over and over again12.do the same things as humans13.fall down14.seem impossible15. as a reporter语法聚焦----Will people use money----No, they won’t. Everything will be随堂练There ______a splendid football event(．I hope we'll study ______ home ______computers in the future.in；We should play a part in ______the party.organizingWe will have ______ free time next year than this year.Michael or Tony?______ ______ be a soccer match this weekend?．我们今天下午要为英语考试作准备。
人教新目标英语八年级上册Unit7知识讲解+练习题(含答案)
人教新目标英语八年级上册Unit 7 Will people have robots?词句精讲精练词汇精讲1. duringduring是介词，意为“在……期间”。
例如：I went to see my uncle during my stay in Beijing. 我在北京逗留期间去北京看我叔叔了。
【拓展】during；in与for(1) during指“在……时间内，在……的期间”。
谓语动词常为表示持续性的动作或状态的动词，时间段前常有限定词（the; 物主代词等），表特指。
例如：He asked many questions during the three meetings. 在这三次会议期间，他问了许多问题。
(2) in意为“在……时间内”，一般情况下可以和during互换，用in时往往强调某一动作发生在某一时间段中的某一时间点；during既可表示“在整个时间段期间”，也可表示“某时间段内的某个时间点”。
例如：Mike put his hand up three times during/in the class. 在这节课内，Mike举了三次手。
(3) for意为“（时间）长达……”，强调时间由始至终，动作也贯穿这段时间的始终，可以和完成时连用。
强调持续时间的长短，回答how long的提问；而during则是指动作所发生的时间，回答when的提问。
例如：He stayed in Beijing for two years. 他在北京住了两年。
He swims every day during the summer. 夏天他每天去游泳。
2. in 100 yearsin 100 years意为“100年之后”，是由“介词in + 一段时间”构成，表示“在……之后”，多用于一般将来时。
对此短语提问时常用how soon。
例如：I will finish the task in two hours. 我将在两个小时后完成这项任务。
八年级英语上册Unit7Willpeoplehaverobots短语语法知识点汇总新版人教新目标版
Unit 7 Will people have robots一、必背短语。
二、重点结构1.will+动词原形将要做……2.fewer/more+可数名词复数更少/更多……less/more+不可数名词更少/更多……3.have to do sth.不得不做某事（客观）must 必须（主观）4.agree with sb. 同意某人的意见5.There will be + 主语+其他将会有……=There be going to be…6.There is/are +sb./sth.+doing sth. 有……正在做某事7.make sb. do sth. 使某人做某事8.help sb. with sth. 帮助某人做某事9.What will the future be like ? 未来将会是什么样子？10.Which side do you agree with ? 你同意哪一方的观点？【教材内容解析】Section A1.Do you think there will be robots in people’s homes? (P. 49)本句是主从复合句，从句为宾语从句，如果do you think放在句中，则为插入语，放在特殊疑问词后面，结构为：疑问词+do you think+主语+谓语+其它。
例句：Which do you think is the best movie theatre?2.People will l ive to be 200 years old. (P. 49)live to be+基数词+years old意为“活到……岁”。
例句：In the story, people will live to be 500 years old.3.Will people use money in 100 years? (P. 49)“in+一段时间”表示“在……之后”或“在……之内”，通常用于一般将来时，常用来回答how soon的提问；“for+一段时间”则表示持续多长时间，用来回答how long的提问。
人教版2020年八年级英语上册Unit7Willpeoplehaverobots讲义(新版)人教新目标版
Unit 7 Will people have robots? (讲义) Words and expressionspaper /'peɪpə(r)/ n. 纸；纸张pollution /pə'luːʃn/ n. 污染；污染物prediction /prɪ'dɪkʃn/ n. 预言；预测future /'fjuːtʃə(r)/ n. 将来；未来pollute /pə'luːt/ v. 污染environment /ɪn'vaɪrənmənt/ n.环境planet/'plænɪt/ n. 行星earth /ɜː(r)θ/n. 地球；世界plant /plɑːnt/ v. 种植n. 植物part /pɑː(r)t/ n. 参加；参与；部分play a part 参与（某事）peace /piːs/ n. 和平sea /siː/ n. 海；海洋sky /skaɪ/ n. 天空astronaut /'æstrənɔːt/ n. 宇航员；航天员apartment /ə'pɑː(r)tmənt/ n. 公寓套房rocket /'rɒkɪt/ n. 火箭space /speɪs/ n. 太空；空间space station 太空站；宇宙空间站human /'hjuːmən/ adj. 人的n. 人servant /'sɜː(r)vənt/ n. 仆人dangerous /'deɪndʒərəs/ adj. 有危险的；不安全的already /ɔːl'redi/ adv.已经；早已factory /'fæktəri/ n. 工厂over and over again 多次；反复地believe /bɪ'liːv/ v.相信；认为有可能disagree /,dɪsə'griː/ v.不同意；持不同意见；有分歧even /'iːvn/ adv.甚至；连；愈加hundreds of 许多；大量shape /ʃeɪp/ n. 形状；外形fall /fɔːl/ v. (fell /fel/) 倒塌；跌倒；掉落fall down 突然倒下；跌倒；倒塌inside /ɪn'saɪd/ adv. & prep. 在……里面look for 寻找；寻求possible /'pɒsəbl/ adj. 可能存在或发生的；可能的impossible /ɪm'pɒsəbl/ adj. 不可能存在或发生的；不可能的side /saɪd/ n. 一方（的意见、态度、立场）probably /'prɒbəbli/ adv.很可能；大概during /'djʊərɪŋ/ prep. 在……期间holiday /'hɒlədeɪ/ n. 假期；假日word /wɜː(r)d/ n. 单词；词Nick /nɪk/ 尼克（男名）James /dʒeɪmz/ 詹姆斯（男名）White /waɪt/ 怀特（姓）Role-playNick: What are you reading, Jill?Jill: It’s a book about the future.Nick: Sounds cool. So what will the future be like?Jill: Well, cities will be more crowded and polluted. There will be fewer trees and the environment will be in great danger. Nick: That sounds bad! Will we have to move to other planets? Jill: Maybe. But I want to live on the earth.Nick: Me, too. Then what can we do?Jill: We can use less water and plant more trees. Everyone should play a part in saving the earth.Grammar focus’ll=willwon’t=will not3a Fill in the blanks with more, less or fewer.1.In the future, there will be fresh water because there will bepollution in the sea.2.In 100 years, there will be cars because there will bepeople in the cities.3.There will be jobs for people because robotswill do the same jobs as people.4.I think there will be cities because people will buildbuildings in the country.5.In 50 years, people will have free time because therewill be things to do.Reading2b Read the article and match each paragraph with the questionsit discusses.Paragraph 1 Will robots think like humans in thefuture? Paragraph 2 What will robots be like in the future? Paragraph 3 What can robots do today?Paragraph 4 What are robots like in movies?Do You Think You Will Have Your Own Robot?1.When we watch movies about the future, we sometimes see robots. Theyare usually like human servants. They help with the housework and do jobs like working in dirty or dangerous places.2.Today there are already robots working in factories. Some can helpto build cars, and they do simple jobs over and over again. Fewer people will do such jobs in the future because they are boring, but robots will never get bored.3.Scientists are now trying to make robots look like humans and dothe same things as we do. Some robots in Japan can walk and dance.They are fun to watch. However, some scientists believe that although we can make robots move like people, it will be difficult to make them really think like a human. For example, scientist James White thinks that robots will never be able to wake up and know where they are. But many scientists disagree with Mr. White. They think that robots will even be able to talk like humans in 25 to 50 years.4.Some scientists believe that there will be more robots in the future.However, they agree it may take hundreds of years. These new robots will have many different shapes. Some will looks like humans, and others might look like animals. In India, for example, scientists made robots that look like snakes. If buildings fall down with people inside, these snake robots can help look for people under thebuildings. This was not possible 20 years ago, but computers and rockets also seemed impossible 100 years ago. We never know what will happen in the future!Exercises一、填空1.Our (环境) will be better if we protect it.2.The (预言) didn’t come true.3.His uncle is an (宇航员).4.He worked in a (太空站) last year.5.There are five (仆人) in his family.6.Tom was surprised by all the (pollute) on the beach.7.We hope the world will be (peace).8.Be away from the tiger. It’s(danger).9.It’s too late. I (agree) that we go there today.10.It seems (possible) that people can fly.二、单选( )11. Please pass me two .A.pieces of paperB. pieces of papersC. pieces paperD. piece papers( )12. Let’s play a part the room.A. cleanB. cleaningC. to cleanD. in cleaning( )13. volunteers will give out leaflets(传单) to ask people to protect the wetlands(湿地).A. Two hundredsB. Hundreds ofC. Two hundred ofD. Hundred of( )14. , Tom! It’s time to get up and go to school.A. Wake upB. Make upC. Grow upD. Look up ()15. John will go to France on vacation this summer.A. possibleB. impossibleC. probablyD. probable( )16. It is difficult for a robot _ thesame things aperson does.A. doing; likeB. do; fromC. to do; asD. does; as( )17. —What are you doing in the room?—I’m my hat.A. looking afterB. looking forC. looking upD. looking like( )18. There are some students the classroom.A. cleanB. to cleaningC. cleaningD. cleans( )19. There are many clouds _ the sky.A. inB. onC. atD. to( )20. I think the movie is interesting. But he disagrees me.A. inB. withC. toD. of( )21. It’s7 p.m., but the children are not backyet.A. alsoB. eitherC. alreadyD. only( )22. If there are people driving, there will be _air pollution.A. less; lessB. less; fewerC. fewer; fewerD. fewer;less( )23. —Willthere be schools in the future?—I think students will study at home on the Internet.A. Yes, there will.B. No, there won’t.C. Yes, there is.D. No, there isn’t.三、翻译24.你同意将来会有更多的污染吗？Do you that there will be more pollution?25.你能告诉我未来是什么样子吗？Can you tell me what the ? 26.你必须反复地练习才能做得很好。
人教新目标版英语八上Unit7《Willpeoplehaverobot》(Period5)说课稿
人教新目标版英语八上Unit 7《Will people have robot》（Period 5）说课稿一. 教材分析人教新目标版英语八上Unit 7《Will people have robot》（Period 5）是一篇关于未来科技发展对人类生活影响的话题。
本节课主要围绕未来社会机器人与人类的互动，探讨了机器人在日常生活中的应用以及可能带来的挑战。
教材通过丰富的情景设置和任务型活动，引导学生学会用一般将来时谈论未来，提高学生的预测能力和创新思维。
二. 学情分析八年级的学生已经掌握了基本的英语语法知识，具备一定的听说读写能力。
他们对未来科技发展充满好奇，具有较强的求知欲和创新精神。
但同时，部分学生对英语学习中存在恐惧心理，缺乏自信心，且在未来题材的理解上存在一定的困难。
三. 说教学目标1.知识目标：学生能够掌握一般将来时的基本结构，运用一般将来时谈论未来。
2.能力目标：学生能够通过听力、阅读和交流，提高对未来科技的预测和创新思维能力。
3.情感目标：学生能够树立正确的科技观，认识到科技发展对人类生活的影响，激发学生热爱科学、探索未知的热情。
四. 说教学重难点1.重点：学生能够运用一般将来时谈论未来，掌握一般将来时的基本结构。
2.难点：学生能够在未来题材的语境中准确运用一般将来时，表达自己的观点和预测。
五. 说教学方法与手段1.教学方法：采用任务型教学法，通过听力、阅读、讨论、汇报等环节，引导学生主动探究、积极参与。
2.教学手段：利用多媒体课件、网络资源、图片等辅助教学，提高学生的学习兴趣和参与度。
六. 说教学过程1.导入：以一张有趣的机器人图片引发学生对未来的想象，激发学生的学习兴趣。
2.听力活动：播放一段关于未来机器人的听力材料，学生听后回答相关问题，培养学生获取信息、处理信息的能力。
3.阅读理解：学生阅读一篇关于未来机器人的文章，通过回答问题、小组讨论等方式，提高学生的阅读理解和批判性思维能力。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
《Unit 7 Will people have robots》知识讲解及单元检测重难点：1、本单元重点词汇、句型2、词汇辨析：in、after与later；fewer与less；space、room与place；during、in 与for3、语法：一般将来时教学过程：一、【必背短语清单】on computers在电脑上on paper在纸上live to be 200 years old 活到200岁free time空闲时间in danger处于危险之中 on the earth在地球上play a part in sth参与某事 space station太空站look for寻找computer programmer电脑编程员in the future在未来 over and over again反复地get bored感到厌烦的wake up醒来look like看起来像 fall down倒塌二、【必背句型、用法清单】1.will+动词原形将要做……2.fewer/more +可数名词复数更少/更多……3.less/more+不可数名词更少/更多……4.try to do sth尽力做某事5.have to do sth不得不做某事6.agree with sb同意某人的意见7.such+名词如此……8.play a part in doing sth参与做某事 9.make sb do sth让某人做某事10.help sb with sth帮助某人某事11.There will be +主语+其他将会有……12.There is/are+sb./sth.+doing sth 有……正在做某事13.It is +形容词+for sb +to do sth 做某事对某人来说是怎样的14.Sb. spend some time/money (in) doing sth.Sb. spend some time/money on sth.It takes sb some time/money to do sth.Sth takes sb some time/money15.already“已经”，通常用于肯定句16. hundreds of 许多、大量，与具体数字连用时，用单数且不与of连用。
如：five hundredThousand, million,billon与其用法相同17.believe表示相信某人说的话believe in相信某人的为人18. forget to do sth忘记去做某事forget doing sth忘记做了某事三、重难点讲解考点1Do you think there will be robots in people's homes?1. Do you think...? 结构通常用来征求对方的意见或看法，后面接宾语从句，从句用陈述语序。
本句的肯定回答用"Yes,there will."，否定回答用"No,there won't."。
例句：---Do you think there will be robots in school?你认为学校将来会有机器人吗？---Yes, there will. 是的，会有。
拓展：do you think还可以用作插入语，在特殊疑问句中放在特殊疑问词之后，疑问句其他部分用陈述语序。
例句：Where do you think he comes from?你认为他是哪里人？2. there will be是there be句型的一般将来时，意为"将有..."，也可用there is\are going to be来表示。
（1）肯定句：there will be+主语+其他例句：There will be many tourists in our city next year.明年我们的城市将有很多的游客。
（2）否定句：there will not\won't be+主语+其他例句：There won't be many people at tomorrow's party.明天的聚会上不会有很多人。
（3）一般疑问句：will there be+主语+其他？其肯定回答为"Yes,there will."，否定回答为"No,there won't."。
例句：---Will there be much time left?会剩下很多时间吗？---Yes, there will.\No,there won't.是的，会。
\不，不会。
（4）特殊疑问句：疑问词+will there be+主语+其他？例句：When will there be more free time?什么时候会有更多的空闲时间？拓展：there be 句型的时态变化时态句子结构一般现在时 there is\are...一般过去时 there was\were...一般将来时 there will be...\there is\are going to be...注意： there be句型中不能用have\has表示"有..."；there be 后面接并列名词时，谓语动词应与最近的名词在单复数上保持一致。
考点2 I think every home will have a robot.我认为每个家庭都将有一个机器人。
"will+动词原形"构成一般将来时。
（1）一般将来时表示将来某个时间要发生的动作或存在的状态，也表示将来经常反复发生的动作，常与表示将来的时间状语连用。
如tomorrow,next year,"in+时间段"等。
一般将来时由"助动词will+动词原形"构成，第一人称还可以用shall。
例句： I will\shall go to the park tomorrow.我明天要去公园。
（2）will和be going to 都可以表示将来，但有区别。
Will表示单纯的将来概念，而be going to强调事先经过考虑、安排而计划或打算要做某事，或者概括某种迹象判断某事有可能发生。
（3）一般将来时的否定构成：在will\shall 后面加not。
Will not可缩写为won't。
（4）变为一般疑问句：将will\shall提到主语前面。
其肯定回答为"Yes,主语+will."，否定回答为"No,主语+won't."。
即学即用：考点3 Will people use money in 100years? 一百年后人们还会用钱吗？辨析：in,after与laterIn和after都可以表示"在...之后"，但用法有所不同。
In是指以现在时间为起点的"在一段时间以后"，也可以表示"在将来多少时间之内"，考点4 There will be less free time.将会有更少的闲暇时间。
There will be fewer people.将会有更少的人。
There will be more pollution.将会有更多的污染。
1.辨析：fewer与lessFewer与less分别为few和little的比较级，都意为"更少的"。
Fewer与可数名词复数形式连用，其反义词为many的比较级more。
less与不可数名词连用，其反义词为much的比较级more。
例句：They buy fewer cigarettes and less beer now.现在他们买的香烟和啤酒少些了。
拓展：less也可作副词，意为"较少地，更少地"，常用来修饰形容词、副词或动词。
其反义词为more，用法与less相同。
例句Eat less,drink less and sleep more.少吃，少喝，多睡觉。
注意：few,little含有否定意味，意味"几乎没有" a few, a little含有肯定意味，意味"一点，一些"2.pollution n.污染，污染物短语：white pollution白色污染 noise pollution噪音污染air pollution空气污染 water pollution水污染拓展：pollute v.（使）污染例句：Many rivers are polluted by the waste water from nearby factories.很多河流被来自附近工厂的废水所污染。
polluted adj.被污染的 polluted water被污染了的水例句：You mustn't swim in the polluted river.你禁止在被污染了的河中游泳。
即学即用：1.The doctor told Jenny to eat vegetables and meat because she was getti ng heavier and heavier.A.much,littleB.more,lessC.many,fewD.more,fewer2.Many old people get sick because of serious air (pollute).3.Waste water from chemical factories maybe (pollute) the sea.考点6 However, they agree it may take hundreds of years.然而，他们同意这可能还要花费几百年的时间。
hundred百，一百的 a hundred years ago一百年以前例句：He weighs more than one hundred kilograms.他体重超过100公斤。
hundreds of 表示不确切的数目，意为"数百，好几百，成百上千"。
例句：Hundreds of students will take part in the games.成百上千的学生将会参加这次比赛。
拓展：hundred，thousand(千),million(百万)表示不确切的数目时，在词尾加s,且和of 连用，表示"数百，数千，数百万"。
但当这些词千有数词或several,some等修饰词时则不加s,也不跟介词of连用，直接跟名词。