最新版译林英语六年级上册Unit7 单元教案
Unit 7 Protect the Earth 第1课时 教学内容：Story time 教学目标： 1. 能听懂、会说、会读、会写单词：protect, Earth, save, useful, waste。 2. 能听懂、会说、会读、会写句型：We use water to clean things.、We should save trees.、We shouldn’t drive so much。 3. 能听懂、会说、会读单词：reuse, energy, most, coal, oil, wood, plastic。 4. 能理解课文内容，并能尝试复述课文，能够尝试用should和shouldn’t对日常行为提出建议并说明原因。 5. 关心环境保护，知道一些环保小常识。 教学重点和难点 教学重点：能正确理解并朗读课文内容，在教师的引导和帮助下复述课文内容。 教学难点：能理解课文内容，尝试复述课文，并能尝试提出建议并说明原因。 教学过程 Step 1 Warm-up T: Hello boys and girls. We have five new friends today. Who are they? Watch and find them! (教师播放歌曲) S: … 【设计意图：通过歌曲自然导入五个朋友，让学生对即将学习的内容产生兴趣。】 Step 2 Pre-reading tasks 1. Let’s compete T: Who are our friends? S: … T: (展示关于塑料的图片) And this is plastic. It is our good friend. We use it every day! How can we use it? S: (分组讨论) T: OK! Now it’s your show time! Let’s have a competition between Group A and Group B. Ready? Go! S: (以小组的形式进行比赛，看谁说出的塑料用途多) T: Great! We still have two black friends. Look! This is coal. The other is oil. (展示关于煤和汽油的图片) We can use them to make energy. We often use the five friends. So they are useful. Where do they live? S: They live on the Earth. T: Yes! They live on the Earth. We live on the Earth too. The Earth is our home. But look! Is the Earth happy? Why is she sad? She wrote us a letter. Watch! We make the Earth sad. Now we should protect the Earth. (用PPT呈现本单元标题) Today we are going to learn Unit 7 Protect the Earth. S: (跟着老师读单元标题) 【设计意图：通过小组竞赛的形式激发学生思维，让学生积极参与到课堂中来。地球的信让学生感知保护地球的必要性，在情境中理解protect。】 2. Protecting the Earth T: What do you want to know about protecting the Earth? S: … T: I’m glad you can ask good questions. That can help you with your reading. What should we do to protect the Earth？ S: … T: Good idea! We should not use too much …! We should save it! Step 3 While-reading tasks 1. Water T: What should we do to protect the Earth? Please pick up your books. Read the text quickly and tick! (用PPT呈现选项，让学生阅读完课文后进行勾选) Boys and girls, when reading for the first time, we should read fast and get the key words and sentences. S: (阅读课文，完成练习) T: Well done! Water is important. We should save water first. Why should we save water? How can we save water? Please read Part 1 and find the answers to the questions. S: (阅读第一部分，完成练习) T: Good! Now can you guess what “waste” means? S: It means “浪费”. 【设计意图：通过任务对学生进行读法指导，锻炼学生在快速阅读时获取关键信息以及根据上下文猜测词义的能力。】 T: Now we know we should save water. After washing things, what can we do with water? S: … T: Yes, we can reuse it. What can we reuse water to do? S: … T: Good idea. And maybe we can reuse it to mop the floor. Maybe we can reuse it to water the flowers. 2. Energy T: We know a lot about saving water. How about saving energy? Pick up your books, read Part 2 and find the answers to the questions. (用PPT呈现两道判断正误的题目) (学生阅读第二部分，完成练习；随后老师检查学生答案) 【设计意图：通过布置任务，来学生带着任务来找阅读课文的环节，帮助学生深度理解课文，并培养学生自主学习的能力。】 3. Trees and plastic T: You know a lot about saving water and energy. How about trees and plastic? It’s time to read on your own. Group A, put up your hands please. You read Part 3 and make a report about saving trees. Group B, put up your hands. You read Part 4 and make a report about not using plastic. S: (分组阅读并准备报告) T: Now it’s report time. Can you report about saving trees? Let’s invite Group A to report first. Group B, please listen carefully and complete this chart. (用PPT呈现板书；结束后请B组学生汇报，A组学生完成表格) S: (依次完成任务) Step 4 Post-reading tasks 1. Read the story after the tape (教师播放课文录音，让学生跟读，指导学生朗读时应根据句意稍作停顿) 2. Retell the story (教师邀请学生复述课文内容)
Homework 1. Copy the new words and phrases of Story time. 2. Read Story time fluently and try to recite and retell it. 3. Making a poster about protecting the Earth.
Teaching aids 教学准备（含板书设计） 教学准备：PPT课件、图字卡 板书设计： Unit 7 Protect the Earth Water Energy Trees Plastic Not much Not much Keep the air clean Bad for the Earth Not waste Not drive so much Not cut down Not use too much Save and reuse Save Paper bags Glass bottles
说课 本课生词较多，且不好理解。所以我把几个较难理解的物质类名词拟人化为五个朋友，拉近和学生之间的距离，使他们对其产生兴趣。在导入阶段我把这五个朋友做成一首歌，不仅活跃了课堂气氛，而且让学生通过哼唱对这几个单词有初步的概念，为接下来的学习做铺垫。学习完生词后，让学生通过谈论几种物质的用处来学会使用use … to …句型。通过观看地球的信的视频自然引出本单元课题：Protect the Earth。 在课文学习中，首先通过让学生对课题提问让他们学会带着问题进行阅读。对学生提出的问题进行梳理，提炼出what, why和how三个贯穿全文的问题。首
译林版六年级英语上册第七单元知识点归类整理(第一学期期末复习资料unit 7重点归纳)
Unit 7 Protect the Earth一、重点词组：1、保护地球protect the Earth2、节水save water3、用水来清洗东西use water to clean things4、在很多地方in many places5、大量水much water6、浪费水waste water7、再利用水reuse water8、我们的大部分能源most of our energy9、在地球上on Earth10、来自煤炭和石油come from coal and oil11、过多驾驶drive so much12、使用大量能源use a lot of energy13、用木材制造桌子use wood to make tables14、许多其他的东西many other things15、砍伐太多树木cut down too many trees16、帮助净化空气help keep the air clean17、对地球有害be bad for the Earth18、不使用太多塑料don’t use too much plastic19、用塑料制作包use plastic to make bags20. 使用太多塑料袋use too many plastic bags21、使用纸包use paper bags22、玻璃瓶glass bottles23、收集纸 collect some paper24.玩得开心 have fun25、再利用塑料瓶做一个玩具reuse a plastic bottle to make a toy26、地球日Earth Day27、世界环境日 World Environment Day28、爱护地球love our Earth29、做课题do a project30、所有的学生 all students31、了解这个 know this32、制作一张海报make a poster33、告诉...关于...的事 tell ...about ...34、开始画画 start drawing35、那看起来真漂亮! That looks nice !36、在树上画些香蕉 draw some bananas on the tree37、画一个垃圾桶draw a rubbish bin38、把它放在校门put it at the school gate39、海报完成了 The poster is ready.40. 多么美的海报啊！ What a nice poster!二、重点句型：（一） use ... to ...( to 后用动词原形)。
小学英语六年级上册Unit 7 作业设计 译林版三起
六年级上Unit7 Protect the Earth作业设计年段六年级学科英语单元Unit 7 课时第一课时Story time 课时目标描述作业目标1.通过展示一些地球环境的现状，让学生进行讨论，畅谈环保的重要性。
2.仔细听课文录音并模仿课文中的对话，总结对话中出现的本单元的新单词，并且可以在全班进行讨论交流生活中怎样做才能更好地保护地球的环境。
1.通过作业，复习巩固所学单词和句型，能以正确的语音语调朗读。
2.能运用所学句型进行口头表达，加深理解。
作业类型对应单元目标序号学习水平题目类型题目难度预计完成时间（分钟）题目来源拓展型作业1 理解活动题容易8-10 原创基础型作业1 应用读写题容易5-8 原创作业设计设计意图一、两人一组，说一说你们生活中遇到的污染问题吧！)1.通过作业，复习巩固所学单词和句型，能以正确的语音语调朗读，。
2.本项作业要求学生两人一组对话后，学会用核心句型“We use...to... We should(not) +动词原形.”等。
根据调查内容进行对话练习。
考虑到不同的学情，可以让学生自问自答，也可以与同学继续互动。
教师可以在后续的反馈环节，组织What is our Earth like?We do some bad things to our Earth. Water,energy,trees,plastic...What can we do to protect the Earth? ...二、联系上下文，完成对话。
1. A: There __________ so many cars in the street. B. Yes. Smoke ________cars_______the air dirty. A:And cars use a lot of __________ .B: But there’s ___________much energy_______the Earth. A: Then what should we_______? B:We______drive less.A:Your idea______great. 2. A: Look!The boy is______his_______. B: But he’s waiting too much_______.A: Yes.There________much water in many places. B:You are right.We should_________and reuse it.学生在课堂上交流作业，让作业成为课堂教学点一个重要组成部分，发挥作业的互动性和交际性。
最新版译林英语六年级6Aunit7-知识点与练习
unit7 新版译林英语六年级6Aunit7-知识点与练习一、短语：1、save water节约用水2、新版译林英语六年级6Aunit7-知识点与练习喝水3、use water to clean things用水清洗东西4、every day每天5、in many places在许多地方6、much water许多水7、waste water浪费水8、save energy节能9、来自... 10、on Earth在地球上11、a lot of energy许多能源12、save trees拯救树木13、make tables做桌子14、cut down砍伐15、too many+可数名词16、too much+不可数名词17、be bad for 对...有害（反）be good for对...有益18、plastic bags塑料袋19、glass bottles玻璃瓶20、Earth Day地球日21、do a projet做课题22、all students所有的学生23、make a poster做一张海报24、tell sb about sth告诉某人某事25、tell sb to do sth告诉某人做某事26、on the trees在树上（长在上面的）27、in the tree在树上（不是长在上面的）28、a rubbish bin一个垃圾桶29、at the school gate在学校门口30、protect the Earth保护地球31、drive(过去式)drove31、our home我们的家园二、重点句子：1、We use water to clean things .我们用水清洗物品.2、We use plastic to make bags and bottles.我们用塑料制作包和瓶子.3、We use wood to make tables, chairs and other things.我们用木头制作桌椅和其它东西.4、We should use paper bags and glass bottles.我们应该使用纸袋和玻璃瓶.5、We should save trees.我们应该拯救树木.6、We should not drive so much.我们不应该驾驶太多.7、We should not use too many plastic bags or bottles.我们不应该使用太多的塑料袋或瓶子.8、We should not cut down too many trees.我们不应付砍伐太多树木.9、We should not waste water.我们不应该浪费水.三、重点句型：We use---to----We should------We shouldn’d------四、练习：按要求写单词.1.waste(反义词)2.drive(过去式)e(形容词)4. many(最高级)5.cut(现在分词)6.twenty(序数词)单项选择题( )1.Woodfrom trees.time.A.are wasteB.is wasteC.are wastingD.is wasting( )3.It’s cold outside. Don’t go outside.A.too muchB.much tooC.too manyD.many too( )4.The poster nice.A.looks atB.looks likeC.looksD.look( )5.Let me it green.A.to colourB.colourC.colouringD.coloured( )6.--When is World Environment Day? --It’s on .A.10th SeptemberB.5th JuneC.22nd April( )7.--When’s Earth Day? --It’s 22nd April.A.atB.inC.on( )8. goes around the sun.A.The moonB.MoonC.The EarthD.Earth( )9. is bad for the Earth.A.Much plasticB.Many treesC.Many flowersD.Much water( )10.There coal and oil on the Earth.A.is manyB.are manyC.is muchD.are much( )11. goes around the sun.A. The moonB.MonnC. The EarthD. Earth根据英文解释或首字母,填入正确的单词或短语.1.It’s a kind of liquid(液体) energy. It’s black. It’s.2.People us plastic or glass to make them. We put milk, water, juice or other food in them. They are .3.We can write or draw something on a piece of p .4.They had a lot of f in Hainan.5.Please don’t talk l in the library.6.It is a place for people to order(点菜) food and eat there. It’s a .7.It’s a beautiful planet(行星). It goes around the sun. And the moon goes around it. It’s our home. It’s the .8.The students are doing a p about the environment.选择正确的词填空,完成句子1. (can)reuse them.2. (Cars; Grass)help keep the air clean.3.--Mum, I will go to a party this evening.--Oh, Great. (Have fun; Be careful).4.Cars use a lot of (coal; oil)5.Oil (is; isn’t) very useful.用所给词的适当形式填空1.We shouldn’t (smoke)in the office.2.Today he is wearing a pair of (glass).3.-- (Throw)the magazine away. It’s not (use)now.--Please don’t. I can (use) it (make)boxes.4.Every (student)should do something (help)others.5.Sam starts (draw).6.There (be not)much energy on the Earth.根据要求完成句子.1.All students should know this.(对划线部分提问）know this?2.We shouldn’t waste time.(改为同义句）We time.3.You can use the basket to carry them.(改为同义句）You can them the basket.4.Earth Day is on 22nd April.(对画线部分提问)Earth Day?5.We use plastic to make bottles.(对划线部分提问）do you use make bottles?看图,联系上下文补全对话.Sam: Look at the poster. The Earth is . Why?Nancy: Can’t you see the f . Water andrubbish from factories pollute .Liu Tao: Wow. There are cars on the poster.Why?Tom: Too many cars make the and streetscrowded. Smoke from cars makes the air dirty,too.Wang Bing: Look at the h . There aren’t any tress on them.Su Hai: How poor the Earth is! We should it.根据所给情景,完成句子.1.当你看见有人一边开着水龙头,一边刷牙时,你应该说：You should the tap.Please don’t.2.爸爸准备去超市,你递给他一个布袋子,并且说：You shouldn’t bags.Too much plastic makes the Earth .3.同学完成了海报制作,你可以这样夸赞：poster.4.当你看见同学们浪费纸时,你应该说：Please don’t paper.W e can it and toys with it.5.当你爸爸准备开车去附近的超市购物时,你可以说：Please go there on .Driving so much for the environment. Walking is also good for your health(健康).阅读短文,回答下列问题The environment is everything around us,for example,air,water,animals,plants,buildings and so on.They all affect(影响) us in many ways and are closely related to our lives.People can't live without the environment.Everybody needs to breathe（呼吸）air,drink water and eat food every day.We burn（燃烧）coal to keep warm,and we use wood to make paper.AndThe environment is getting worse and worse(越来越糟) for many years.Smoke from factories pollutes the air.Animals lose their homes because people cut down trees every minute. Streets are crowded(拥挤的) with people,cars and buses. (痛苦的) forus to live in now.Luckily,we begin to know it’s time to protect the Earth. We make laws(法律) to deal with(处理) air,water and noise pollution.The river will be bright.The sky will be clear. The flowers will be beautiful. We believe that we will be able to save our environment and live in a better world.1.Are people part of the environment?2.Why do animals lose their homes?3.Why are the streets crowded?4.What do people make to deal with the pollution?。
新苏教译林版小学6六年级英语上册全册优质课件
新苏教译林版小学6六年级英语上册全册优质课件一、教学内容二、教学目标1. 让学生掌握并运用本册书新词汇和重点句型。
2. 提高学生英语听说读写能力，特别是阅读理解和写作技巧。
3. 通过学习，使学生解西方文化，拓展国际视野。
三、教学难点与重点1. 教学难点：语法点理解和运用，如一般过去时、现在进行时等。
2. 教学重点：词汇积累，句型掌握以及阅读写作能力培养。
四、教具与学具准备1. 教具：PPT课件、黑板、磁铁、卡片等。
2. 学具：课本、练习册、笔记本、彩色笔等。
五、教学过程1. 导入：通过展示与课程相关生活情境或图片，引导学生进行讨论，激发学习兴趣。
2. 新课内容呈现：详细讲解每个单元词汇、语法和句型，结合实际例句，让学生更好地理解。
3. 例题讲解：针对每个单元重点难点，设计典型例题，引导学生思考并解答。
4. 随堂练习：设计针对性强练习题，让学生及时巩固所学知识。
5. 小组活动：分组进行角色扮演、讨论等活动，提高学生口语表达能力。
六、板书设计板书将采用清晰、简洁形式，列出每个单元重点词汇、语法和句型，方便学生记录和复习。
七、作业设计1. 作业题目：（1）抄写每个单元重点词汇和句型，并翻译成中文。
（2）完成课后练习册相关练习题。
（3）根据Unit 3 A Holiday Journal，写一篇关于自己假期英文日记。
2. 答案：将在课后发放，以便学生自查。
八、课后反思及拓展延伸1. 反思：针对本节课教学效果，及时反思教学方法、课堂氛围等方面，不断调整和改进。
2. 拓展延伸：推荐与课程相关英文绘本、动画片等，鼓励学生在课后进行自主学习，提高英语水平。
同时，开展英语角等活动，为学生提供更多实践机会。
重点和难点解析一、教学内容选择与组织我特别注重教材章节和内容详细规划。
在准备课程时，我不仅梳理每个单元主题和目标，还精心挑选与学生学习生活紧密相关话题，如“The King's New Clothes”和“Keep Fit”，旨在提高学生学习兴趣和实际应用能力。
【译林版】5B英语Unit7 Chinese festivals优秀教学设计(5课时)
date
activity
food
3.Talk about your favorite festivals
First, show more pictures about festivals
Then,give more questions to help students to talk about their favorite festivals:
What festivals do you like?
When is it?
What do you usually do at this festival?
4.Pair work to talk about the festival:
A:What festivals do you like?
B:I like...
教读12月份。
3. Riddles谜语
T: Try to guess the dates
a. It comes after February. _____________
b. It starts with letter A, It has four letters. _____________
c. Our Summer holiday（暑假）begins in this month. ______
Pictures about the Chinese festivals you heard.
The Spring Festival(),the Dragon Boat Festival()
The Mid-Autumn Festival(), The Double ninth Festival( )
译林英语六年级上册第七单元练习试卷(word版,含答案)
译林六年级上册Unit 7 Protect the Earth一、重点单词。
1. 地球________________2. 很多_________________3. 煤炭________________4. 石油________________5. 开车，驾驶____________6. 塑料________________7. 木头，木材__________8.其他的__________________9.玻璃_________________ 10.纸__________________ 11.save____________________ eful________________ 13.waste ______________ 14.reuse ___________________ 15.energy ______________ 16.most _______________ 17.project __________________ 18.poster _______________ 19.gate _______________ 20.protect __________________二、重点短语。
1. 节约用水__________________________2. 浪费水___________________________3. 用水清洗东西______________________4. 砍伐，砍掉_______________________5. 从……来，来自____________________6. 节约能源_________________________7. 许多煤炭和石油____________________8.太多塑料袋________________________9. 做一个课题_______________________ 10.protect our Earth____________________ 11.most of our energy __________________ 12.be bad for the Earth_________________ 13.cut down too many trees_______________ 14.make a poster _____________________ e wood to make tables______________ 16.tell sb. about sth. ___________________三、重点句子。
六年级上英语重点短语、句型unit7_译林版(三起)
六年级上英语重点短语、句型unit7_译林版（三起）Unit 7 重点词汇、句型Story time1. protect the Earth 保护地球2. save water 节约用水3. Water is useful . 水是有用的useful things有用的东西4. drink water 喝水5. use water to clean things用水洗东西6. every day每天7. We use water to clean things every day我们每天用水洗东西。
8. in many places 在许多地方9.There is not much water.没有太多的水.much water太多的水.There is not much water in many places. 在许多地方水资源缺乏。
10.We should not waste water.我们不应该浪费水。
11. waste water浪费水12.We should reuse and save water我们应该再利用和节约水资源13.save energy节约能源许多其它的东西。
25.We should not cut down too many trees.我们不应该砍伐太多的树。
26. cut down too many trees砍掉太多的树27. Trees help keep the air clean.树帮助净化空气.28. Don’t use too much plastic不要使用太多的塑料29.We use plastic to make bags and bottles.我们用塑料制作包和瓶子。
30.Too much plastic is bad for the Earth太多的塑料对地球有害31.be bad for the Earth对地球有害32. be bad for 对...有害be good for 对...有益33. We should not use too many plastic bags or bottles. 我们不应该使用太多的塑料袋和塑料瓶。
六年级下册英语教案-Unit7 Summer holiday plans Story time ｜译林版(三起)
六下Unit 7 Summer holiday plans（第1课时）教案【教材分析】本单元谈论的话题是暑假出游计划。
本单元的语法延续了前一个单元的语法项目一般将来时，重点是一般将来时的一般疑问句和特殊疑问句。
本单元的词汇是有关城市的地点名词可结合图片和视频进行教学。
【教学目标】1.知识目标：①能听懂、会说、会读、会写词汇: go back to, how long, photo②能听懂、会说、会读词汇：summer holiday, stay, sound, Disneyland, Ocean Park, Taipei③能听懂、会说、会读和会写句型where /what/when will you go for the holiday？How long will you stay there？Will you ...? Yes,I will. /No I won’t.2. 能力目标：①通过课文重点语言知识点的学习，能初步理解并朗读课文。
②能在理解课文的基础上复述课文。
3．情感目标：通过学习，让学生了解国内外著名城市的主要景点。
【学情分析】学生已经接触过用will表达的一般将来时。
【教学重点】①能听懂、会说、会读、会写词汇: go back to, how long, photo能听懂、会说、会读词汇：summer holiday, stay, sound, Disneyland, Ocean Park, Taipei②能听懂、会说、会读和会写句型where /what/when will you go for the holiday？How long will you stay there？Will you ...? Yes,I will. /No I won’t.③能正确理解、朗读课文。
【教学难点】①能理解、朗读并复述课文。
②能正确掌握，灵活运用将来时句型表达于真实情景中。
③能理解运用一般将来时的一般疑问句和特殊疑问句。
译林版英语六年级下册Unit7单元教案含二次备课
4.能理解并掌握Grammar time中“will”的用法及规则，了解一般将来时的各种用法。
5.了解西方人在圣诞节时的一些其他习俗。
教学难点：
1.能正确理解并朗读文章内容，在教师的引导和帮助下尝试复述
Where will Su Hai go inHong Kong?
Su Hai will go to Disneyland andOceanPark.
Who will Liu Tao go with?
Liu Tao will go toTaipeiwith his parents.
The teacher can help the students and ask some questions.
Liu Tao will go to __________ with his parents. He will take some ______ and
show them after the holiday.
3．Talk about your summer holiday plans.
Step5 Homework
英语学科六年级下册教案
课题:Unit7 Summer holiday plans
备课时间：主备人：王妮
教学目标：
1.能听懂、会读、会说will, Disneyland, Ocean Park.
2.能听懂、会读、会说将来时句式will的一般疑问句和特殊疑问句
3.能正确理解并朗读文章内容，在教师的引导和帮助下尝试复述
3．能正确理解并朗读文章内容，在教师的引导和帮助下尝试复述。
4．能正确用将来时与他人交流讨论计划。
2020—2021译林版苏州六年级英语下册第7单元教案(含5课时)
Unit 7 Summer holiday plansThe 1st period一、教学内容:Story time二、教学目标:1.能听懂、会说、会读和会写单词: go back to ,how long , photo,并三会掌握summer holiday/stay/sound/Disneyland/Ocean Park/Taipei.2.能听懂、会说、会读和会写句型：Will you…？及其肯定和否定答语Where/How long /How /What will you …?及其答句。
3.通过课文重点语言知识点的学习，能理解课文内容，能流畅朗读课文内容，并能进行简单复述。
4.通过课文的学习，感受精彩暑假计划带来的旅途之乐。
三、教学重点:1.能听懂、会说、会读和会写单词: go back to ,how long , photo,并三会掌握summer holiday/stay/sound/Disneyland/Ocean Park/Taipei.2.能听懂、会说、会读和会写句型：Will you…？及其肯定和否定答语Where/How long /How /What will you …?及其答句。
3.正确掌握，灵活运用will来表达一般将来时句型。
四、教学难点：2.能听懂、会说、会读和会写句型：Will you…？及其肯定和否定答语Where/How long /How /What will you …?及其答句。
3.通过课文重点语言知识点的学习，能理解课文内容，能流畅朗读课文内容，并能进行简单复述。
五、教学准备：多媒体课件PPT,教学光盘六、教学过程：Step One：Before—reading1.出示本课学习目标。
2. Do you remember the main school holidays in China or the UK?(1)回顾上册U3知识：In China and the UK, children both have summer holiday.(2)T: Do you like the summer holiday? Why?（揭示课题，导入新课）3. T: In summer holiday, a lot of children will visit different cities or countries and take some photos. Let’s enjoy some photos first.(欣赏一组风景名胜地点，学生用We’ll find …in…句型看图表达，随机教学Taipei)4. T：I’ll go to Hong Kong by plane this summer holiday. I’ll visit Ocean Park, Disneyland and Victoria Harbor.(1) 出示图片，教学单词Ocean Park /Disneyland(2) 点击录音听关于三处景点的介绍。