资源简介 中小学教育资源及组卷应用平台Unit 3 Project+reading plus分层作业单词默写1._________ v. 比较2._________ n. 小组3._________ n. 成员4._________ n. 简短的5._________ n. 报告6._________ v. 呈现7._________ adj. 流行的8._________ n. 反映9._________ v. 鉴别10.________ n. 所有权11.________ v. 解释12.________ n. 重要性13.________ v. 形成二、词组默写1. 把……与……比较:____________________2. 把……比作……:____________________3. 锻炼习惯:____________________4. 以小组形式:____________________5. 询问某人某事:____________________6. 记笔记:____________________7. 把某事呈现……:____________________8. 与……不同:____________________9. 查明;弄清:____________________10. ……的重要性:____________________三、根据要求完成句子1.There are over five hundred students in our school.(保持句意基本不变)There are five hundred students in our school.2.他周末总是在家吃饭。He dinner at home the weekend.3.Sandy seldom plays ball games after school. (对画线部分提问)Sandy ball games after school 4.He doesn’t often go to the cinema with us. (改为同义句)He to the cinema with us.5.Nobody jumps as high as Jason in the club. (同义转换)Jason jumps member in the club.四 、用括号内所给词的适当形式填空。1.S some drinks are bad for us. So we shouldn’t drink them too often.2.Michael likes blue very much, so he’s o in a blue jacket.3.— My grandpa is 80 and is still in very good h . —Yeah. He exercises every day.4.It rained hard, but n of my classmates was late for school.5.—Why does Millie always look tired —Because she sleeps for l than 6 hours every day.五、语法填空。Do you like exercising Exercise is one of the 1 (easy) ways of improving your health. Regular (有规律的) exercise can not only keep you 2 (health), but also make you relaxed. No matter what your age is, many interesting 3 (activity) can help you feel much 4 (well).If you are not ready 5 (exercise) regularly, you can do the everyday activities such as cleaning the house, washing the car or 6 (walk) a dog.If you are unable to keep exercising, it’s important not to set unrealistic(不切实际的) goals. Why not 7 (make) a short-term goal You can exercise 10 minutes at least 8 (two) a week at first.Make your exercise fun. Exercise can be a fun time when you walk out with your family or friends. Exercise with them in new neighborhoods or beautiful parks. After exercising, you can also sit on the grass 9 (comfortable).Although you enjoy an everyday exercise much, you may find that you finally lose interest in it. You can decide to set your goals and reward (奖励) 10 (you). A new pair of shoes will be a best reward for you.六、阅读理解。What do students do in their free time Last Friday, we asked 50 students about their free time activities. Our questions were about exercise, reading extracurricular (课外的) books, using the Internet, doing housework and traveling.We found that half the students do sports once or twice a week. More than fifty percent of the students read extracurricular books for about four hours a week. About sixty percent of the students surf the Internet twice or three times a week. Twenty students do housework every day.★How often do you exercise ★How many hours do you read extracurricular books in a week ★How often do you use the Internet ★How often do you do housework The last question is about traveling. None of the students have traveled since the outbreak (爆发) of COVID-19. They stay at home to protect themselves. And they hope the pandemic (疫情) will end soon so that they can go outside to have fun.1.How many students exercise three or four times a week ________A.About 5. B.About 15. C.About 25.2.What percent of students read extracurricular books for about two hours a week ________A.10%. B.20%. C.56%.3.How often do most students use the Internet ________A.2﹣3 times a week.B.4﹣5 times a week.C.Every day.4.Why do the students stay at home instead of traveling ________A.To relax.B.To have fun.C.To protect themselves.5.Which of the following is TRUE according to the survey (调查) ________A.15 students do housework every day.B.The survey is about the students' study.C.We invited 50 students to finish the survey last Friday.七、书面表达。运动对我们的生活、学习以及身体健康有着重要的意义。假如你是李明,请给你的美国朋友迈克(Mike)写一封电子邮件,告诉他你对运动的看法。提示:1. What’s your favourite sport 2. What sport do you usually do 3. What do sports bring you 要求:1.短文须包含提示内容,可适当发挥;2.词数70个左右。_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Unit 3 Project+reading plus分层作业答案与详解单词默写【答案】1. compare v. 比较2. group n. 小组3. member n. 成员4. brief n. 简短的5. report n. 报告6. present v. 呈现7. popular adj. 流行的8. reflecting n. 反映9. identify v. 鉴别10. ownership n. 所有权11. explain v. 解释12. importance n. 重要性13. shape v. 形成二、词组默写【答案】1. 把……与……比较:compare ... with...2. 把……比作……:compare ... to...3. 锻炼习惯:exercise habit4. 以小组形式:in groups5. 询问某人某事:ask sb sth6. 记笔记:take notes7. 把某事呈现……:present sth to sb8. 与……不同:be different from9. 查明;弄清:find out10. ……的重要性:the importance of三、根据要求完成句子。【答案】1.more than【解析】句意:我们学校有五百多名学生。根据题干可知,原句中需要替换的部分是over“超过”,over的同义词组是more than,意为“超过、多于”,故填more;than。2. always has at【解析】比较中英文意思,缺失内容为“总是”,“吃”以及“在”。always“总是”,频率副词;have dinner“吃晚饭”,其中have表示“吃”,动词;at the weekend“在周末”,其中at表示“在”,介词。由“总是”可知,此处时态为一般现在时;主语为He,所以谓语动词用has。故填always;has;at。3. How often does play【解析】句意:桑迪放学后很少打球。划线部分为频度副词,特殊疑问词用how often,又因为位于句首,首字母h需要大写,所以一、二空用How、often;主语“Sandy”为第三人称单数,且时态为一般现在时,助动词用does,所以三空填does;助动词后加动词原形,所以四空填play。故填How;often;does;play。4.seldom goes【解析】句意:他不常和我们一起去看电影。“不经常”英文表达为“doesn’t often”也可以表达为“seldom”;主语“He”为第三人称单数,谓语要用三单,所以用goes。故填seldom;goes。5. higher than any other【解析】句意:在俱乐部里,没有人能跳得像杰森那样高。此处可以表达为“杰森跳的比俱乐部的任何成员都高”,符合“比较级+than+any other”的结构,high的比较级是higher,故填higher;than;any;other。四 、用括号内所给词的适当形式填空。【答案】1.Sometimes【解析】 句意:有时候有些饮料对我们有害,所以我们不应该经常喝。根据首字母提示及“So we shouldn’t drink them too often.”(我们不应该经常喝)可知,sometimes有时,符合语境,故填(S)ometimes。2.(o)ften【解析】句意:迈克尔非常喜欢蓝色,所以他经常穿着蓝色夹克。根据“Michael likes blue very much, so he’s...in a blue jacket.”以及首字母可知,他喜欢蓝色,所以经常穿蓝色夹克,often“经常”,频度副词。故填(o)ften。3.(h)ealth【解析】句意:——我爷爷80岁了,身体仍然很好。——是的,他每天锻炼。根据“He exercises every day.”可知爷爷每天锻炼,所以他身体好,in good health“身体好”,故填(h)ealth。4.(n)one【解析】句意:雨下得很大,但我的同学都没有迟到。通过转折连词but判断,此处填写不定代词none表示全部否定,“没有一人”。故填(n)one。5.(l)ess【解析】句意:——为什么Millie总是看起来疲惫?——因为她每天睡不到6个小时。根据“than 6 hours ”及首字母可知,此处用less than表示“少于”,故填(l)ess。五、语法填空。【答案】1.easiest 2.healthy 3.activities 4.better 5.to exercise 6.walking 7.make 8.twice 9.comfortably 10.yourself【导语】本文就如何进行锻炼给出了一些建议。1.句意:锻炼是改善健康的最简单的方法之一。“one of the+形容词最高级+复数名词”意为“最……之一”,easy“容易的”,形容词,其最高级为easiest,意为“最容易的”,故填easiest。2.句意:有规律的锻炼不仅能保持健康,还能使你放松。根据“but also make you relaxed”可知,此处是说有规律的锻炼不仅能保持健康,keep sb. healthy“让某人保持健康”,此处用名词health的形容词healthy,意为“健康的”。故填healthy。3.句意:无论你的年龄多大,许多有趣的活动都能让你感觉好得多。activity“活动”,可数名词,根据修饰词“many”可知,此处用复数,故填activities。4.句意:无论你的年龄多大,许多有趣的活动都能让你感觉好得多。句中“much”表示程度,用于比较级,“well”的比较级为better,意为“更好”,much better意为“好得多”,故填better。5.句意:如果你还没有准备好定期锻炼,你可以做一些日常活动,比如打扫房子、洗车或遛狗。根据“you can do the everyday activities”可知,此句是说如果还没准备好定期锻炼,be ready to do sth.“准备好去做某事”,exercise“锻炼”,动词,故填to exercise。6.句意:如果你还没有准备好定期锻炼,你可以做一些日常活动,比如打扫房子、洗车或遛狗。句中“such as”意为“比如”,后面接名词、动名词或从句等。walk a dog“遛狗”,动词短语,此处用动名词,故填walking。7.句意:为什么不制定一个短期目标呢?“Why not do sth.”意为“为什么不做某事”,此处用动词原形。故填make。8.句意:一开始你可以每周至少锻炼两次,每次10分钟。根据“a week”可知,此处是说一周两次,表示频率。twice“两次”。故填twice。9.句意:运动后,你也可以舒服地坐在草地上。句中动词“sit on”为动词短语,应用副词修饰。comfortable“舒适的”,形容词,其副词为comfortably,意为“舒适地”,故填comfortably。10.句意:你可以决定设定目标并奖励自己。根据“reward”可知,此处是说奖励你自己。you“你”,人称代词,反身代词为yourself,意为“你自己”。故填yourself。六、阅读理解。【答案】本文两人谈论了Mike的健康生活。1.根据“I often get up at 6:00 in the morning.”可知此处询问对方经常什么时候起床。故填What time do you usually get up。2.根据“I have breakfast, too”可知此处介绍自己在起床之后吃早饭。故填I have breakfast。3.根据“I usually have noodles, eggs and some fruit for breakfast.”可知此处询问对方早饭通常吃什么。故填What do you usually have for breakfast。4.根据“Yes, I do sports every day.”可知此处询问对方经常做运动吗。故填Do you often do sports。5.根据“Is basketball your favourite sport ”以及“I like playing basketball very much.”可知此处表示篮球是自己最喜欢的运动,作肯定回答。故填Yes, it is。七、书面表达。【答案】例文Dear Mike,I’m happy to receive your e-mail. Let me tell you something about my favourite sport.Of all the sports, I like swimming best. I think swimming is very interesting. In summer, I usually go swimming with my classmates after school. I can swim so well that I am a member of our school swimming team. Last week there was a swimming match between my school and No.2 Middle School. I took part in the match and won first prize. Swimming makes me stay healthy. It also makes me have more friends.What sport do you like best Can you tell me something about it?Li Ming【详解】[总体分析]①题材:本文是一封电子邮件;②时态:时态为一般现在时和一般过去时;③提示:根据提示内容介绍自己对运动的看法,适当增加细节。[写作步骤]第一步,引出话题;第二步,介绍自己喜欢的运动、通常做什么运动以及运动给你带来了什么;第三步,书写结语。[亮点词汇]①go swimming去游泳②take part in参加[高分句型]①I think swimming is very interesting. (宾语从句)②I can swim so well that I am a member of our school swimming team. (so...that引导的结果状语从句)21世纪教育网 www.21cnjy.com 精品试卷·第 2 页 (共 2 页)HYPERLINK "http://www.21cnjy.com/" 21世纪教育网(www.21cnjy.com)(共44张PPT)Presentation单元主题范畴:人与自我单元主题内容:身心健康(2024新版)人教版 七年级(下册)PresentationLearning Objectives1.能够运用所学词汇和句型询问和回答关于运动习惯的问题,并进行简单的记录。通过阅读Reading plus,说出“运动对身体、大脑和心理的益处”,掌握运动能塑造肌肉、保持体重、改善大脑功能、提升记忆力、产生放松化学物质等好处。(学习理解)2.能够整合所获信息,汇总小组成员的远动习惯并进行分析和此较,并以口头的形式,向全班进行汇报。通过阅读和完成任务,培养学生的阅读理解能力、信息提取和归纳总结能力,以及对观点的思考和表达能力(学习理解,应用实践)3.能够撰写小组内成员运动习惯的简短报告,说出不同运动在不同文化中的受欢迎程度和原因。培养积极参与运动、保持健康生活方式的意识。(迁移创新)PresentationLet's enjoy a video and answer the questions.What sports names are talked about in the video volleyballbaseballbasketballfootballdivingskiingdivingswimmingfencing击剑boxing拳击tennisbadmintonPresentationWhat sports did we learn tennisping-pongfootball / soccerSportsvolleyballbasketballbaseballbadmintonWhat exercise did we learn jump ropegoskateboardingrun/joggo cyclinggo skiingplay golfdo yogago skatinggo hikingPresentationPairworkA: What is your favourite sport B: My favourite sport is ...A: Why do you like it best B: Because ...A: How often do you … B: Every day./ Sometimes./ Once(twice a week)/…Possible Reasons:keep us fit / healthyhave fun/ make you happybuild team spiritfeel energeticstrengthen friendshipbe more confident…PresentationDo you have these sports items I’m the school reporter. Our school is holding a sports meeting. Some sports items are left on the playground. Let's find their owner.PresentationWhere is _____ _____________ your tennis racketI think it's in ______backyard.myIs this _______ ____________ your jump ropeYes.It’s_____.mine=my jump ropeWhose______________ are these baseball glovesThey’re _____.Dave left them here yesterday.his=his baseball glovesIs this _______________ _______ ping-pong batyoursNo.it belongs toMary. It’s ____.hers=her ping-pong batPresentationFill in the blanks and then practise in pairs.A: I can't find ___ tennis racket. Have you seen it B: No, ____ is right here in my bag. Maybe _____ is in the locker room.mymineyoursA: The new basketballs are great. Whose are they B: The ones with the red mark are _____ (他们的). _____(我们的) are the ones with the blue stripes.theirsOursA: I love these running shoes. Are they _____ B: No, _____ have a different color. I thinkthey might be _____ (她的).yoursminehersA: I need a dumbbell. Which one is ____ B: The lighter one is _____. ____ (他的)is the heavier one over there.yoursmineHisPresentationDifferent students have different exercise habits.Let's find out the most popular sport or exercise.How PresentationToday’s ProjectCompare Exercise HabitsPresentationHow Make a surveyWrite a brief reportPresent the reportDivide into groupsStep1Step2Step3Step4Step5Compare the reportsThemeCompare exercisehabitsPlans3a. In groups, ask …3b. Write a brief report…3c. Compare the reports…PresentationDivide into groupsDivide the whole class into groups (6 students in a group).S1 ask questions.S2 take notes.S3 writes a report.S4 presents the report.S2-S6 Answer the questionsArrangement:Step1Step2Step3Step4Step5Presentation3aIn groups, ask your group members questions about their favourite sport or exercise. Take notes in the table.What sport or exercise do you do most often Why do you like it How often do you do it Make a surveyName Sport / Exercise Reason How oftenAi Ling basketball fun; good exercise twice a weekStep1Step2Step3Step4Step5PresentationWhat sport or exercise do you do most often I often.../My favorite sport is...Why do you like it Because it keep me fit./It’s good exerise and fun.How often do you do it I play it every day/three times a week...Cool! Students like sports a lot! Let me continue to do a survey to compare their exercise habits!A: Hey, guys! I'm really into sports. What sport or exercise do you do most often B: I usually play basketball. It's so much fun!A: Why do you like it B: Well, first, it helps me stay in shape. And I also love the feeling of teamwork on the court.A: Cool! How often do you play B: I play basketball about three times a week, usually after school.Name Sport/Exercise Reason How oftenAi Ling basketball fun;good exercise twice a weekTom football exciting, good for health every dayLucy dance interesting; keep slim once a weekLily jump rope easy; lose weight every dayPresentationWrite a brief report for your group.3bWrite a brief reportIn our group, three students’ favourite sport is basketball. Two students like tennis and one likes running.We like these for different reasons. Ai Ling plays basketball for fun and exercise. She does it twice a week ...Step1Step2Step3Step4Step5总分TIPS:汇报喜欢某运动的人数时,避免句式单一性;统领和过渡句,使汇报的层次更清晰;添加总结性的结尾,升华主题。PresentationPresent the report to the class.3bPresent the reportStep1Step2Step3Step4Step5In our group, three students’ favourite sport is basketball. Two students like swimming and one likes doing sit-ups.We like these for different reasons. Ai Ling, Lily and Amy like basketball. Ai Ling plays basketball for fun and exercise. Lily and Amy like playing with friends and they think this sport can build team spirit. They all do it twice a week. Binbin and Mingming like swimming because the cool water feels great. They swim once a week. Rose does sit-ups every day because she wants to keep fit.Doing sports is good for our mind and body. Let’s take action now.总分总PresentationPresent the report to the class.3bPresent the reportAssessment of the reportThe report can introduce their favourite sport or exercise briefly. The report can compare their different exercise habits accurately. The report can explain their reasons why they like this sport or exercise. The reporter can give us a report fluently and clearly. Excellent Good Not bad Needs improvementSuggestion:Step1Step2Step3Step4Step5PresentationCompare the reports. Find out which is the most popular sport or exercise and why people like it.3cStep1Step2Step3Step4Step5Compare the reportsThe most popular sport in our class is basketball. People can do it at any time. It's fun to play together. Basketball can build team spirit. Also playing basketball is good exercise for our bodies.PresentationStart Exercise Now!Health is wealth.The more you exercise, the healthier you will become!PresentationWith more than four billion fans across the world, soccer is the most popular sport in the world right now.With more than 2.7 billion fans all over the world. Basketball is the 2nd most popular sport in the world. lt is also one of the highest-paid sports.With more than 1.5 billion fans all over the world, tennis is the third most popular sport in the world right now. Tennis is more popular in Europe, America, and Australia.PresentationHow well can you do these things Very well OK Needs work1 I can talk about different ways to keep fit.2 I can tell others about how often I do sports or exercise.3 I can talk about things that l own and identify ownership.4 I can explain the importance of doing sports and exercise.PresentationHow is exercise goodfor us Do you know the reasons behind these benefits Let’s learn more.PresentationPrediction:TitlePicture+What do you think the text is about B. How exercise is good for usC. How to keep on exercisingA. How the girl keeps fitD. How to start an exercising habitPresentation1. How many paragraphs are there in the text 2. What is the structure of the text Five paragraphs.Para.1Para.2Para.3Para.4Para.5ABCIntroductionMain partsConclusionPresentation3. What’s the main idea of each part ConclusionIntroductionExercise is importantHealth is wealthHow exercise is good for usThe text talks about how exercise is good for our _______, ________ and ________.bodybrainmindMain partsPresentationRead the text and complete the outline.1IntroductionMainparts How is exercise good for our . . . body brain mindConclusionExercise is important, and we should try our best to exercise every day.develops musclesmakes us strongerkeeps our weight downgets more oxygenhelps our memory improvehelps us to learn and think wellcan relax our body and calm our mindmake us feel better and more confidentmake new friendsHealth is wealth. Try to make exercise a part of our life.PresentationPara.11.Why don’t we always want to do exercise according to the text 2.What should we do Because often we are too busy or feel lazy.We should try our best to exercise every day.3.Can you think of any other reasons for not doing exercise Lack ofequipmentNo partnersWorrying about getting hurtFeeling tiredWeather problemsNo interestPresentation1. How is exercise good for our body 2:What problems can being overweight cause Circling the key words can help you read betterIt develops our muscles and makes us stronger. It also keeps our weight down.Being overweight puts stress on our body. It can cause pain in our back and knees, and even cause more serious problems such as heart disease later in life.Presentation1:How is exercise good for our brain 2:How does exercise help us improve our memory Our brain gets more oxygen. It helps our memory improve and helps us to learn and think well.our heart _________ and we ___________our brain gets___________our memory _______more oxygenbeats fasterbreathe harderimprove3. What do the two “this”and “that” refer to 4:What can you do when you have trouble with your homework We can do some exercise.PresentationHow Exercise Affects the BrainWhen do we exercise at school PresentationHow is exercise good for our mind It helps us to feel happier.It relax our body and calm our mindIt makes us feel better and more confidentIt can help us make new friendsDo you think so What’s your opinion Presentation2: What do you think the writer means by “Health is wealth” Do you agree 1: In the last paragraph, the writer gives us a piece of _______.adviceThe writer means health is very important. So we need to exercise every day to keep ourselves fit and healthy.I agree. Without health, we can achieve nothing.越... 越...make ... a part of ...把...变成...的一部分PresentationRead the text again and answer the questions.21. What are some common reasons people give for not exercising 2. What do you think the writer means by “Health is wealth” Do you agree They are too busy or feel lazy.Yes.The writer means that health is very important to us. I agree. Only we are healthy, we can enjoy our life happily. That is why health is wealth.PresentationAlthough it’s difficult to keep exercising, it is great to get started !PresentationHealthy BodyHealthy MindIntroductionBody PartConclusionWhy we don’t always want to do exerciseBody benefitBody benefitBody benefitHealth is ___________2.________1.make us _________2.keep our ___________________1.heart beats ______ and we breathe ______.Our brain gets more ______2.more of certain chemicals after exercise. This helps us to _______________1.Special chemicals can _____________and ______________2.Feeling fit can also make us __________ and _____________ about ourselves.lazystrongerweight downfasterharderoxygenlearn and think wellrelax our bodycalm our mindfeel bettermore confidentwealth1.________busyPresentationWe all know exercise is important, yet we don't always want to do it! Often we are too busy or feel lazy. But we should try our best to exercise every day.conj. 然而;但是adj. 繁忙的adj. 懒惰的Para.1PresentationExercise is good for our body. When we exercise, our body changes. Exercise develops our muscles and makes us stronger. When we exercise, we use energy. This keeps our weight down. Being overweight puts stress on our body. It can cause pain in our back and knees, and even cause more serious problems such as heart disease later in life.be good for 对...有益v. 改变change...into...把...变成...增强我们的肌肉make+宾语+adj 使某人/某物...我们消耗能量减轻体重overweight 超重 (此句是动名词作主语)put stress on... 给...施压导致...疼痛例如心脏病Para.2PresentationExercise is also great for our brain. During exercise, our heart beats faster and we breathe harder. Our brain gets more oxygen because of this, and that helps our memory improve. Scientists also tell us the body makes more of certain chemicals after exercise. This helps us to learn and think well. So, when you have trouble with your homework, do some exercise, then try again!心跳加快呼吸困难获得更多氧气因为;由于n. 记忆v.改善;提高产生更多特定化学物质have trouble with... 在...方面有困难Para.3PresentationExercise also helps us to feel happier. When we exercise, our brain makes special chemicals. These chemicals can relax our body and calm our mind. Feeling fit can also make us feel better and more confident about ourselves. When we play a sport with others, we can even make new friends.感到更快乐特殊的化学物质使我们的身体放松心情平静动名词作主语make sb + do ... 使...某人做...结交新朋友Remember: Health is wealth. The more you exercise, the healthier you become. Try to make exercise a part of your life.Para.4Para.5健康就是财富你锻炼的越多,你就会越健康.try to do sth 尽力做某事a part of... ...的一部分PresentationRemember: Health is wealth.How can we keep this wealth PresentationHow can we keep this wealth drink 8 glasses of water every daymake exercise part of your lifekeep a healthy diet(健康饮食)[ da t]do regular check-ups(做常规体检)be happysleep at least 8 hours a dayPresentationLet's learn and take notes.compare v. 比较;比拟,喻为词讲练compare ... with ... 把 ... 和 ... 进行比较compare ... to ... 把 ... 比喻成 ...He can’t campare with Shakespeare as a writer of tragedies.作为一名悲剧作家,他是无法与莎士比亚相提并论的。There’s nothing to compare with a nice cold drink when you get home after work.当你下班后回家,没有什么能和一杯好的冷饮相比。例1. When we ________ different cultures, we can learn a lot.2. Teachers often _________ their students ______ the rising sun.3. You should ________ the two plans ______ find out which one is better.comparecomparetocomparewithPresentation基础作业:Review and remember the new words and expressions.进阶作业:Make your own mind map about your favourite sport.拓展作业:Polish(打磨) your work and rewirte your poster. Put up report on the class boards.谢谢21世纪教育网(www.21cnjy.com)中小学教育资源网站兼职招聘:https://www.21cnjy.com/recruitment/home/admin 展开更多...... 收起↑ 资源列表 Unit 3 Project+reading plus 分层作业(含答案与解析)(2024新版)人教版七年级(下).doc Unit 3 Section B Project+reading plus 项目活动课公开课课件(2024新版)人教版七年级(下册).ppt Unit 3.mp3 为什么要运动.mp4 大脑.mp4 媒体1.mp4 媒体4.mp4 视频.mp4 超重.mp4 锻炼的好处.mp4