信息技术2.0微能力：中学九年级英语下（第十三单元）Grammar Focus-中小学作业设计大赛获奖优秀作品模板-《义务教育英语课程标准（2022年版）》

1、 中学九年级英语下（第十三单元）Grammar Focus义务教育英语课程标准（2022年版）微能力2.0认证-中小学作业设计大赛目 录作业设计方案撰写：TFCF优秀获奖作品一、单元信息基本信息学科年级学期教材版本单元名称英语九年级第二学期人教版Unit13 Were trying to save the earth!课时信息序 号教学内容课型课时1Section A听说+阅读第 1、2 课时2Section B听说+阅读第 3、4 课时3Grammar Focusand Composition语法+写作第 5、6 课时二、单元分析( 一) 课标要求本单元围绕环境保护的话题，并用主题图片表现噪

2、音污染、空气污染、水污 染等内容，目的是为了让学生对环境的破坏有一个直观的认识，从而激发学生强 烈的社会责任感和对未来发展的思考。根据义务教育英语课程标准 (2011 年 版) 要求，从语言知识与技能、情感态度、学习策略和文化意识等方面进行分 析。语言知识与技能1.能使用目标语言谈论环境污染1.通过谈论环境污染，培 养学生的环保意识，争取 做到：保护环境，从我做 起，从小事做起。和环境保护等相关话题。2.学习并掌握与环境污染及环境保护相关的词汇和表达方式；能正确区分和使用以下语法结构：现在进行时现在完成时、used to、被动语态和情态动词等。学习策略Section B 在 Section A

3、 所学 的基础上，进一步谈论如何保 护环境。教学重点是让学生了 解环境保护的方式，并落实到 积极的行动当中，同时还有阅 读策略和写作技巧的训练。ProblemsSolutionsProtecting theenvironment(二) 教材分析1.单元内容分析Section A 的重点是让学生 掌握与环境污染和环境保护相 关的词汇和句型，同时引导学生 关爱动物、保护环境。教学难点 是让学生学会正确使用连词和 结合生活实际讲述如何保护环 境。2.单元内容框架PollutionTalkingabout theenvironment(三) 学情分析语言基础：经过小学和初中两年 多的英语学习，九年级的

4、学生已经 掌握了一定的语音、词汇、句型、 语法等语言基础知识，因此能够较 好地理解单元教材内容并完成相应 的学习任务。生活经验：本单元的教学话 题是保护环境，且学生在八年 级学习将来时已对环境问题有 所涉及，本单元将详细学习环 境问题和解决方法，学生对此 话题比较熟悉且有话可说。学习能力：九年级学生已经积 累了一定的英语学习经验，具备 了交流的能力，且能在小组活动 中互相帮助 ，共同完成学习任 务。三、单元学习与作业目标( 一) 单元学习目标单元学习目标课时课时学习目标1. 能使用 目标语言谈论环 境污染和环境保护等相关 话题。2. 学习并掌握与环境污染 及环境保护相关的词汇和 表达方式；能正

5、确区分和使 用以下语法结构：现在进行 时、现在完成时、used to、 被动语态和情态动词等。 3.通过谈论环境污染，培养 学生的环保意识，争取做 到：保护环境，从我做起， 从小事做起。第 1、2 课时1.让学生掌握与环境污染和环境 保护相关的词汇与句型。第 3、4 课时2.让学生能使用目标语言进行关 于环境污染和环境保护的话题讨 论，培养学生的交际能力以及合作 意识。第 5、6 课时3.掌握已学的核心语法知识。培 养学生综合语言运用能力，让学生 了解保护环境的方式，并落实到积 极的行动之中。(二) 单元作业目标单元作业目标课时课时作业目标1. 掌握与环境污染和环 境保护相关的词汇和句 型，并

6、会运用所学知识介 绍如何保护环境。 2.掌握现在进行时、现在 完成时、used to.句型、 被动语态和情态动词的 使用。 3.运用所学语言知识介 绍如何保护环境。第 1、2 课时1.考察学生对所学内容的整体理解， 同时检测了学生对重难点词汇和相 关句型的掌握。第 3、4 课时2. 能使用目标语言进行关于环境污 染和环境保护的话题讨论。 3.能结合文章来完成思维导图，培养 阅读技巧以及语言的综合运用能力。第 5、6 课时4.复习现在进行时、现在完成时、 used to.句型、被动语态和情态动 词的使用。 5.运用所学语言知识介绍如何保护 环境。设计作业评价分析单元目标填写作业属性表明确作业目标

7、五、单元课时作业设定问题任务 确定作业时长选取作业资源四、单元作业设计思路初中英语学科的作业设计思路要遵循以下基本原则：1 、灵活性：设计的作业类型、形式灵活多样，让学生的多种感官动起来，而不 仅仅是培养学生学会做题而已。2 、层次性：作业的设计要有弹性，满足不同层次的学生对于知识巩固的需要， 而且作业内容应该由浅入深，由易到难，由简到繁。3 、独立性：鼓励学生通过自己独立思考，体验自主解决难题的快乐，培养独立 自主学习的能力。4 、预见性：要预见学生在完成作业的过程中可能会出现的问题，并给予适当的 指导和提示，避免不必要的错误。5 、复现性：巩固新知识时，有机地融合旧知识，即可巩固已学语言材

8、料，又可 加快学习新知识的速度。编制作业内容 基础巩固题 能力提升题 综合应用题 拓展创新题第一课作业 (第 1、2 课时)作业 1(基础巩固题：难易度)1.Hunt the words.A. land pollution B. air pollutionC. noise pollution D. water pollution全班分为四个大组，每组选择一个主题，根据主 题开展词汇接力，每个人必须说出与前一个同学 说的词汇有关联的单词或者短语，看看哪一个组 能在规定时间 (2 分钟) 内写出最多的相关词汇。2.作业属性作业目标：让学生掌握与环境污染和环境保护相关的词汇，同时引导学生关爱动 物，

9、保护环境。设计意图：这个活动不仅能充分调动学生的积极参与意识，有效地集中学生的注 意力，唤醒学生脑海中与话题相关的知识储备，为下文听力活动做准备。语言技能：读、听、写作业形式： 口头作业认知水平：理解、应用完成时间：2 分钟作业评价：教师评价、同伴互评3.评价标准检查哪个小组能在规定时间内写出最多的词汇。4.参考答案A. land pollution - rubbish- dirty- throw- dustbin- clean up .作业 2 (能力提升题：难易度 )1.According to the listening materials and retell the conversa

10、tion.Tony wants to go _ in the river with Mark this afternoon. But Mark doesnt want to go, _ he went there last weekend and the river was really _._ _,Even the of the river was full of and there were no more fish forfishermen to _. Tony thinks the river used to be so _. It has always been the _(nice

11、) river in this town. Mark tells Tony that people are throwing _ (垃圾) into the river. Factories are also putting _(废气物) into the river. They decide to write to the _ (政府) and hope that it could _ (关 闭) the factories. They also think that everyone should help to _ (清理 )the river and _ (发挥作用) in prote

12、cting the environment.2.作业属性作业目标：考察学生对所听内容的整体理解，同时检测了学生对重难点词汇和相 关句型的掌握。设计意图：充分利用教材的文本及录音，去针对性的锻炼学生的获取关键信息的 能力，同时让学生掌握与环境污染和环境保护相关的词汇与句型，同时引导学生 关爱动物，保护环境。语言技能：读、听、写作业形式：书面作业认知水平：理解、应用、分析完成时间：6 分钟作业评价：教师评价、同伴互评、学生自评3.评价标准评价参考Excellent!Good!Come on!Suggestions!准确率100%80%-100%60%-80%书写格式字迹清楚工整、美观字迹清楚书写不

13、够美观书写错误、格式不正确4.参考答案Swimming, Because, dirty, bottom, rubbish, catch, clean,nicest, litter, waste, government, close down, clean up, play a part作业 3 (综合应用题：难易度 )1.Retell the passage according to the structure below.You can work in groups.2.作业属性作业目标：考察学生对课文内容的理解，同时检测了学生对文章中重难点知识的 掌握。设计意图：通过运用思维导图和复述方式

14、能更好地帮助学生整合本篇文章的阅读 信息，培养学生的阅读技能和提高学生的阅读理解能力。语言技能：说、读作业形式： 口头作业认知水平：理解、应用、分析完成时间：5 分钟作业评价：教师评价、同伴互评3.评价标准评价参考Excellent！Good!Come on!Suggestions!语言描述准确度100%80%-100%60%-80%语言表达流畅度100%80%-100%60%-80%课文信息获取准确度100%80%-100%60%-80%4.参考答案参考课本，合理即可。第二课作业 (第 3、4 课时)作业 1 (基础巩固题：难易度 )1.Try to complete the mind ma

15、p by yourself.2.作业属性作业目标：能结合文章来完成思维导图，培养阅读技巧以及综合语言运用能力。设计意图：运用mind map 来介绍人物经历，让学生一 目了然，思路清晰；并且 引导学生梳理和整合文本信息、结构化呈现文本内容，形成语篇意识。语言技能：讨论、书写作业形式：书面作业认知水平：理解、应用完成时间：5 分钟作业评价：学生自评、同伴互评3.评价标准评价参考Excellent！Good!Come on!Suggestions!准确率100%80%-100%60%-80%信息获取准确度100%80%-100%60%-80%书写格式字迹清楚工整、美观字迹清楚书写不够美观书写错误、

16、格式不正确4.参考答案Amy:e from old buildings that were pulled down2.is an old boat turned upside down3.is made of rocks and old glass bottlesJesscia:1.old clothes that people dont were anymore2.a small shop where she sells her bags3.write a book;new ways to use old clothesWang Tao:1.animals or humans2.can be

17、 put at home3.can be seen in art shops around the city4.to set up a metal art theme park作业 2 (能力提升题：难易度 )1.Fill in the blanks.March 22nd is World Water Day. It started in 1993. It not only makes us think about the importance of water, but also calls on (号召) us to ( 1)_ and protect water. Today, were

18、 facing terrible water problems. Among them, wastewater problem is especially (2)_. And the subject of World Water Day in 2017 is “wastewater” .What is wastewater? It is used water. Usually, wastewater comes from homes, (3)_, hospitals and so on. It is produced by different kinds of activities, incl

19、uding washing the machines, taking showers and using the kitchen. The rain also (4)_ wastewater when it is running down the street during a storm. No matter where it comes from, this kind of water is sure to have (5) _ harmful in it.(6)_ must we treat (处理) wastewater? Wastewater has a big influence

20、on our life. It causes both illness for us, and pollution for the environment. We must care for our environment and our own(7) _.How can we treat wastewater? Different kinds of wastewater need different ways of treatment. Wastewater (8)_ homes can be reused. Then there will be (9)_ wastewater. Also,

21、 factory wastewater has to be cleaned (10)_it goes back to nature.1.A. drink B. save C. carry D. watch2.A. easy B. popular C. small D. serious3.A. factories B. lakes C. rivers D. seas4.A. gets back B. hands in C. changes into D. picks up5.A. nothing B. something C. nobody D. somebody6.A. What B. Who

22、 C. Why D. How7.A. work B. interest C. health D. business8.A. on B. for C. with D. from9.A. less B. more C. better D. worse10.A. and B. whether C. after D. before2.作业属性作业目标：考查学生对目标语言和句型结构的掌握情况，培养学生的阅读技能， 加深学生对环境保护的意识。设计意图：培养学生的阅读能力，也拓展了学生的单词量和语法知识，不仅帮助 学生复习所学知识，还能联系到之前所学的内容，新知和旧知得到很好的巩固。语言技能：读、写作业形式

23、：书面作业认知水平：理解、应用完成时间：8 分钟作业评价：学生自评、同伴互评3.评价标准评价参考Excellent！Good!Come on!Suggestions!准确率100%80%-100%60%-80%书写格式字迹清楚工整、美观字迹清楚书写不够美观书写错误、格式不正确4.参考答案：B D A C B ; C C D A D作业 3 (拓展创新题：难易度)1.Write a poster about how to protect the environment and ask more people to play a part in saving the environment .校园

24、环保标语征集。观察和讨论身边的不环保现象，小组合作，针对各种不环保 的现象设计至少三条以上的环保标语，设计成海报。以下标语提示句型可供参考：Dont We should We cant/shouldnt , or If we , our world will 2.作业属性作业目标： 让学生能使用目标语言进行关于环境污染和环境保护的话题讨论， 培养学生的交际能力以及合作意识。设计意图：锻炼学生动手、动口、动脑的能力，让学生在真实任务中使用语言， 同时渗透了环保意识的培养。语言技能：说、画、看、写作业形式：实践作业认知水平：创造完成时间：15 分钟作业评价：教师评价、同伴互评p3.评价标准评价参考

25、优秀良好合格未达标海报主题主题突出主题明确主 题 基 本明显主题不明确海报内容用词恰当，内容丰富。用 词 恰当 ， 内 容 较 为 丰 富。用 词 有 小部 分 不 恰 当 ， 内 容 不太丰富。用词大部分 不 恰 当 ， 内容 单薄。海报汇报语言流畅，表达无误。语 言 流畅 ，表 达 绝大部分 无 误。语 言 较 流畅，表达大 部 分 无 误。语言不流畅 ，表达 错误多。4.参考答案第三课作业 (第 5、6 课时)作业 1 (基础巩固题+能力提升题)1.Divide the whole class into 4 groups, each group discusses one grammar

26、 item based on some questions and sentences, then sum it up.，Grou 1：时态 (现在进行时 现在完成时)Group 2 ：语态 (被动语态)Group 3 ：情态动词Group 4 ：used to时态、语态归纳时态现在进行时现在完成时被动语态构成否定形式一般疑问形式短语辨析短语意思used to do sth.be used to doing sth.be used to do sth.情态动词情态动词的用法：情态动词表示说话人对所述动作或状态的态度或看法。它不能 单独做谓语，必须和后面的_一起构成谓语。常见的情态动词有: 重点

27、短语翻译：can be_ ; may be_ ;must be_ ;cant be_ ;mustnt be_练一练 1用括号中所给动词的正确形式填空。1.The girls _ (dance) in the classroom now.2.Its 5 oclock now. Mike _ (have) dinner.3. _ you ever _ (be) to the US? Yes, twice.4.I _ (live) here since 1999.5. Do you often clean your classroom? Yes. Our classroom _ (clean) ev

28、ery day.6. Did you go to Jacks birthday party? No, I _. (invite)7.A new highway in my hometown (build) next month.练一练 2根据题意选择最适合的情态动词。1. you pass me a pen? Id like to write down the phone number. Sure. Here it is.A. Can B. Need C. Might D. Must2. You worry about me. Its nothing serious.A. can t B. m

29、ustn t C. needn t D. wont3. May I go to the cinema, Mom? Certainly, but you be back by 11 oclock.A. can B. may C. must D. need4. Excuse me. Is this the right way to the Summer Palace? Sorry, Im not sure. But it be.练一练 3A. might B. mustn t C. can t D. must5. The man in the office be Mr. Black, becaus

30、e he went home just now.A. mustn t B. may not C. can t D. needn t练一练 3根据汉语意思补全句子。1. 她过去常常周末和朋友闲逛。_She with friends on weekends.2. 他习惯于每天晚上睡得很晚。He _ at night.2.作业属性作业目标：复习巩固现在进行时、现在完成时、used to 句型、被动语态和情态 动词。设计意图：让学生在语境中理解、识记和运用本课时的语法知识。语言技能：讨论、书写作业形式：书面作业认知水平：理解、应用完成时间：8 分钟作业评价：学生自评、同伴互评3.评价标准语法焦点Exc

31、ellent!Good!Come on!Suggestions!准确率100%80%-100%60%-80%书写格式字迹清楚工整、美观字迹清楚书写不够美观书写错误、格式不正确4.参考答案时态、语态归纳:时态现在进行时现在完成时被动语态构成be+doinghave/has+donebe+done否定形式be not+doinghavent / hasnt+donebe not+done一般疑问形式Be+主语+doing.?Have/Has+主语+done.?Be+主语+done.?短语辨析:1. 过去常常做某事 2.习惯于做某事 3.被用于做某事情态动词：1. 动词 2.must ,can ,c

32、ould ,may, might, have to, should, need 3.可能是4.也许是 5.一定是 6.不可能是 7.禁止练一练 11.are dancing 2.is having 3.Have been 4. have lived 5.is cleaned6.wasnt invited 7. will be built练一练 21.A 2.C 3.C 4.A 5.C1.used to hang out 2.is used to staying up作业 2 (拓展创新题：难易度)1.保护人类共同的家园地球是每个人的责任和义务。我们在生活中的点滴小事 上也能做出自己的贡献。根据

33、表格内容，谈一谈曾经为保护环境做过哪些努力， 将来还打算如何去做。要求： 1. 词数不少于 80 词；2. 开头已给出，不计入总词数；3. 意思连贯，条理清晰，适当发挥。turn off the lights when you leave a roomstop riding in carsturn off the shower while washing hairride a bikestop using paper napkinsrecycle books and papertake your own bags when shopping2.作业属性作业目标：让学生在真实的生活情景中运用所学

34、语言知识介绍如何保护环境并提 升写作能力。设计意图：培养学生综合语言运用能力，让学生了解保护环境的方式，并落实到 积极的行动之中，使学生的思维得到进一步拓展。对学生来说，是一种见解，一 种尝试，一种创新，让学生实现了从文本知识向写作能力的迁移。语言技能：讨论、书写作业形式：书面作业认知水平：理解、应用完成时间：20 分钟作业评价：教师评价 、同伴互评3.评价标准书面表达要求评价标准Suggestions!1 、书写工整、清晰符合要求、书写规范， 涵盖所有要点、结构规范、条理清楚、逻 辑严密，词汇比较丰富、没有或者有少量 语法错误Excellent!2 、符合要求、书写规范，部分涵盖要点、 文章

35、基本连贯，词汇不够丰富、有一些语 法错误Good!3 、与要求有明显差距、书写不规范，要 点不完整、文章不连贯，词汇量不足、错 误较多，勉强能看出作文意图Come on!4 、能用句子表达，错误百出，只能勉强 猜测出作文意图4.参考答案Its our duty to protect the earth. I always turn off the lights when I leave a room.While I am washing my hair, I usually turn off the shower. Besides, if I want to go shopping, I al

36、ways take my own bags instead of using plastic bags. I have decided to do more things to protect our earth, such as recycling books and paper and stopping riding in cars.六、单元质量检测作业Unit13 Were trying to save the earth!单元综合测试听力部分 (20 分). 听句子，选择与所听句子相符合的图片，其中有一幅是多余的。(5 分). 听小对话，选择正确的选项。 (5 分)1. How was

37、 the river in the past?A. It was dirty B. It was clean. C. It was polluted.2. What do you know about the bag?A. It was made of old jeans.B. Her mother bought it for her.C. The woman bought the bag in the shop.3. What does the woman mean?A. Recycling paper is difficult.B. Recycling paper is easy.C. R

38、ecycling is useless.4. Why does Mr. Black go to work by bike?A. He thinks riding is good for health.B. He thinks riding can cut down noise pollution.C. He thinks riding can help cut down air pollution.5. What animals are endangered?A. Pandas. B. Tigers C. Elephants. 听一段对话，根据对话内容选择正确答案。 (10 分)1. What

39、 do pandas like eating?A. Grass B. Bamboo C. meat2. What are pandas like?A. quiet and peaceful B. noisy and playful C. noisy and cute3. How long does a baby panda spend drinking its mothers milk very day?A. More than two hours B. About four hours C. About fourteen hours4. How many pandas are there i

40、n the world now?A. About one hundred. B. About one thousand. C. About ten thousand.5. Why do people hunt pandas?A. For their feet. B. For their meat. C. For their fur. 笔试部分. 单项选择 (15 分)1. Maybe the best gift in the world is not expensive, but must love.A. be full with B. fill with C. be filled of D.

41、 be full of2. One of the of living in the country is the fresh air.A. experiences B. advantages C. materials D. changes3. So far, more than five thousand people the governments to ask them to close down those factories.A. wrote B. are writing C. have written D. will write4. The city of Harbin is bea

42、utiful all the year around, _ in winter. Ice lanterns decorate streets and attract plenty of tourists.A. especially B. nearly C. probably D. recently5. The car looks nice. Whats more, its much greener because it uses electricity _ gasA. because of B. instead of C. short of D. out of6. Have you ever

43、_ Mo Yan?Of course, a very famous Chinese writer, and he won the Nobel Prize for literature in 2012.A. heard through B. listened to C. heard of D. heard from7. A number ofparents in China to send their children abroad for further study. Yes, the number of students who want to go abroad is getting .A

44、. likes; bigger and bigger B. like; bigger and biggerC. likes; more and more D. like; more and more8. Every year, more than 10000 elephants _ for their ivory.A. were killed B. have killed C. are killed D. will killed9. The new computer her a great amount of money.A. took B. spent C. used D. cost10.

45、Look, those volunteers _ out posters of environmental protection on the street.A. gave B. will give C .are giving D. have given11. The company wants to _ a school for the poor children.A. put off B. set up C. call in D. look after12. The air there has made a to her health since she came to the count

46、ryside.A. decision B. difference C. choice D. push13. We really use disposable chopsticks, you know. I agree. I stopped using them three years ago.A. should B. shouldnt C. cant D. neednt14. Dont the waste paper. It can be reused.A. give away B. put away C. throw away D. break away15. This is my good

47、 friend, Lucy. she I am good at recycling. We often make some toys out of waste.A. Both, and B. Not only; but also C. Either; or D. Neither, nor. 完形填空. (15 分)There are many kinds of pollution around us, 1 air pollution, soil pollution, noise pollution and light pollution. They are bad _2_ our health

48、 in many ways.Burning gas, oil and coal creates air pollution. It can cause sore eyes and _3_ problems.With the increase of pollution and the development of industry, litter is everywhere. It makes our environment dirty. People put lots of rubbish in the land. Farmers use too many _4_ in the fields.

49、 They destroy the soil. So soil pollution has become serious.Noise pollution can make people_5_. For example, people may lose their hearing if they work in a _ 6 _ place for a long time. Too much noise can cause high bloodpressure _7 _.Working for a long time in strong, changeable light _ 8 _ cause

50、some kinds of illnesses. It makes people feel _9_ and is especially bad for the eyes.With _ 10_ pollution, our planet will become greener and our health will be better. Lets be greener people.1. A. such as B. for example C. as well as D. because of2. A. to B. in C. for D. of3. A. breath B. breathe C

51、. breathed D. breathing4. A. chemical B. chemicals C. chemist D. chemistry5. A. blind B. lame C. deaf D. healthy6. A. noise B. noisy C. quiet D. quietly7. A. as well B. too C. also D. either8 A. must B. need C. should D. may9. A. comfortable B. possibly C. terrible D. terribly10. A. little B. less C

52、. few D. fewer. 阅读理解。 (20 分)ANo Car Day was first started by 34 cities in France on September 22, 1998. It was started to protect the environment. By now, more than 1,000 cities around the world have a No Car Day.The first No Car Day in China was in Chengdu in 2001. Other cities, including Shanghai

53、and Wuhan, also support the day.In Beijing, more and more people are joining the campaign. It asks drivers to leave their cars at home for one day each month and walk or ride a bike to work. It also calls on Beijing people not to use cars on June 5(World Environment Day). The slogan for the day is,

54、“If we drive for one less day, we can have one more nice day.”So far, more than 200,000 drivers have shown their support. “We cant control the weather, but we can choose not to drive,” said Wu Zonghua, a car club chairman. Beijing is trying to have 238 blue sky days this year. In the first quarter o

55、f 2012, Beijing only had 52 blue sky days. This was 11 days less than the number for the same period the year before. Much of the dust comes from the desert, but cars cause most of the air pollution. We must do more for No Car Day.1. The first No Car Day fell on _.A. February 2nd B. June 5th C. July

56、 5th D. September 22nd2. _ was the first city to have No Car Day in China.A. Beijing B. Chengdu C. Shanghai D. Wuhan3. What does the underlined word “slogan” in Paragraph 3 mean?A. 目的 B. 原因 C. 意义 D. 口号4. How many blue sky days did Beijing have in the first quarter of 2011?A. 63. B. 52. C. 41. D. 238

57、.5. Which of the following statements is True?A. China is the first country to start No Car Day.B. No Car Day is World Environment Day.C. No Car Day has been supported by over 1,000 cities around the world so far.D. Much of the dust in the air comes from cars. BSome of the greatest problems we face

58、today are the destruction (破坏) of our environment. Brown clouds, polluted water, endangered wild animals., these problems seem so huge.So my family does what we can. We take cloth bags to stores instead of using plastic bags. We walk where we dont have to drive.But does it do any good? When I am the

59、 only one in line at the market with cloth bags, am I doing any good? Does my walking to stores make any real difference to the world?I recently learned something about flamingos (火烈 鸟) which like to get together in groups of a thousand or more. Every year, when the time comes for migration (迁 徙), a

60、 few of them first take off from the lake. But none of the others seem to notice, so the small group returns. However, the next day they try again. This time few more fly along with them, but most of them still pay noattention, so they return again. They try for several times. Every time a few more