现象阐述型英语作文范文(通用13篇)

0 2024-08-18 09:20 Mr.xuan 来源:xuanchuanyuan.com

现象阐述型英语作文范文 第1篇

一、 教材分析

《静电现象及其微观解释》一节是司南版物理选修3-1第一章《静电场》的开端,而本章也是整个高中阶段电学的开端。本节内容在教材中具有承上启下的作用,既是初中所学知识的巩固和深化,又为后继内容的学习做出了铺垫。学好这一节,对学生进一步研究静电场的有关性质有着至关重要的作用,另外静电现象与生活息息相关,学好这一节又能增强物理知识与日常生活的联系,同时激发学生学习物理的兴趣、培养学生爱科学、学科学、用科学的思想热情。

二、 学情分析

1、 学生初中已对静电有初步了解,知道一些简单的静电现象,知道摩擦起电、接触起电两种起电方式,对感应起电也有了些浅薄的了解,但只是一些感性认识,缺乏深层次理性认知。

2、 学生化学课已对物质的微观结构有所研究,这为本节课几种起电方式的微观解释大大降低了难度。

三、 教学目标

【知识与技能】

1、 知道摩擦起电、接触起电、静电感应这三种起电方式;

2、 知道正负电荷的规定及同种电荷相互排斥、异种电荷相互吸引的规律;

3、 知道电荷守恒定律,能用原子结构和电荷守恒的知识分析三种起电方式。

【过程与方法】

1、 通过演示实验使学生进一步认识自然界中的两种电荷;

2、 通过对原子核式结构的学习使学生明确摩擦起电和感应起电不是创造了电荷,而是使物体中的电荷转移。但对一个与外界没有电荷交换的系统,电荷的代数和不变。

【情感态度与价值观】

1、 领略静电现象的奇妙与和谐,发展对科学的好奇心与求知欲;

2、 了解静电现象及其在生活和生产中的应用,尝试运用静电知识解决一些实际问题,有将静电知识应用于生活和生产实践的意识。

四、 教学重点、难点

【重点】

用原子结构和电荷守恒知识分析静电现象

【难点】

静电感应

突破:动画演示

五、 教法学法

【教法】实验演示、启发教学、多媒体动画辅助

【学法】观察分析、讨论交流

六、 教学媒体

1. 实验器材:有机玻璃棒、丝绸、碎纸片、毛皮、橡胶棒、验电器、摩擦起电机;

2. 课件:视频——静电使长发飘起来;文档——人身静电高达七八千伏。

七、 教学流程及操作

【新课导入】(3分钟)

1、 演示摩擦起电机的人造闪电;

2、 播放视频——静电使长发飘起来;

【提出问题】

为什么摩擦会造出闪电?为什么静电使长发飘起来?学完这一节我们将解决以上问题。

设计意图:激发学生的兴趣

【探究实验】(6分钟)

1、 研究第一种起电方式——摩擦起电

设计意图:此处为学生实验,主要是回顾初中的知识,增强学生自豪感并进一步激发学生兴趣。

实验一:用橡胶棒与毛皮摩擦后,放于碎纸片附近观察实验现象;

实验二:用玻璃棒与丝绸摩擦后,放于碎纸片附近观察实验现象;

实验三:将丝绸摩擦过的玻璃棒用丝线悬挂

(1) 再用一根丝绸摩擦过的玻璃棒与之靠近,观察二者相互作用情况;

(2) 用毛皮摩擦过的橡胶棒与之靠近,观察二者相互作用情况。

【现象及结论】

现象:实验一二中毛皮摩擦过的橡胶棒和丝绸摩擦过的玻璃棒都吸引碎纸片;

实验三中的两根丝绸摩擦过的玻璃棒相互排斥,毛皮摩擦过的橡胶棒与丝绸摩擦过的玻璃棒相互吸引。

结论(学生分析):

(1) 都吸引碎纸片,说明二者都带了电;

(2) 两根丝绸摩擦过的玻璃棒必定带同种电荷,我们规定其为正电荷,其相互排斥说明同种电荷相互排斥;

(3) 毛皮摩擦过的橡胶棒与丝绸摩擦过的玻璃棒相互吸引,说明二者带异种电荷,我们把毛皮摩擦过的橡胶棒所带电规定为负电,即异种电荷相互吸引。

总之:自然界存在两种电荷,正电荷与负电荷,同种电荷相互排斥,异种电荷相互吸引。

【提出问题】还有其他起电方式吗?

【探究实验】(3分钟)

2、 研究第二种起电方式——接触起电

让毛皮摩擦过的`橡胶棒或丝绸摩擦过的玻璃棒去接触验电器的金属球,会有什么现象发生?

设计意图:此处也为学生实验,主要是回顾初中的知识,增强学生自豪感并进一步激发学生兴趣。

【现象及结论】

现象:金属箔片张开

结论(学生分析):接触使两箔片带同种电荷,同种电荷相互排斥。

【提出问题】还有其他起电方式吗?

【探究实验】(3分钟)

3、研究第三种起电方式——感应起电(学生实验)

让毛皮摩擦过的橡胶棒或丝绸摩擦过的玻璃棒去靠近但并不接触验电器的金属球,会有什么现象发生?

【现象及结论】

现象:金属箔片张开

结论(学生分析):感应使两箔片带同种电荷,同种电荷相互排斥。

【微观解释】(8分钟)

【提出问题】为什么以上三种方式能使物体带电?它们的本质是什么?

【继续提问】原子结构?此处让学生回答

设计意图:学生化学已学,充分发挥其主体地位

【强调】某些情况下带负电的电子可以移动或转移

【学生讨论交流】

摩擦起电:电子的得失

接触起电:电子的转移(一物至另一物)

感应起电:电子的转移(物体的一部分至另一部分)

【结论】电荷守恒定律

【前后照应,实际应用】(1分钟)

摩擦起闪电:电子的转移

静电使长发飘起来:接触起电,同种电荷相互排斥

【例题】(6分钟)

例1:两个完全一样的绝缘金属球,A带电量Q,B带电量-2Q,将AB相触后分开,AB分别带多少电量?

例2:见右图,感应后BC整体带电了吗?BC分开后带电了吗?

【静电的防护与利用】(8分钟)多媒体动画课件展示

1、 利用:

(1) 吸附功能;可用于除尘、喷涂、复印等;

(2) 杀菌功能:处理种子、处理水、产生的臭氧净化空气。

2、 防护:

将静电导走:避雷针防雷电、油罐车防静电

设计意图:体现情感态度与价值观目标

【课堂练习】(4分钟)(2题针对接触起电与感应起电)

【课堂小结】(1分钟)

请学生谈谈本节课的收获。

【布置作业】(1分钟)

1、 教材本节课后练习;

2、 课外阅读《人身静电高达七八千伏》。

八、 板书设计

现象阐述型英语作文范文 第2篇

As is symbolically depicted in the drawing above, _______图画内容 .

Simply designed as the drawing seems to be,it does reveal that _______图画想表达的主题以及产生的原因 .

What the picture conveys goes far beyond strongly hold that_______解决办法一/观点一.It is also of great significance to _______解决办法二/观点二.Most importantly, _______解决办法三/观点三 . _______(可以是提出解决办法)

现象阐述型英语作文范文 第3篇

假定你叫李华,你的朋友John Smith在南京大学教英语,下面是他给你的来信(略),要求你用英语给他写一封回信,婉言谢绝他的`邀请,回信时必须涉及以下内容:

1.感谢盛情邀请

2.说明自己不能去及原因

3.介绍自己的生活及学习情况和其他有关内容

4.字数(100-140)

Dear John,

I have received your letter yesterday. I am fine here, thank you. How about your live in Nanjing? Is everything all right? I hope so.

I felt glad that you are inviting me to attend your exhibition in Nanjing University. You said that is your first exhibition in the university,and you hope that will be an excellent performance during the day. Meanwhile, you had imported a lot of material from your country. However, I am sorry to ask for your forgiveness on this case. It is because I have to sit for my law examinations during the time. So,I really unable to attend your exhibition. But anyway, I promise you that I will go to meet you in this coming holiday.

Recently, I was so busy for my assignments and presentations. As what I told you last time, I have a lot of law assignments need to submit in this end of month. Beside this, I need to present some of the papers too. Then, two of my group members been sick on last week. Thus, a large number of preparation works need to be carry out by myself. Oh John, I felt that I really hard to breath now. I hope all these works can be settle smoothly soon.

Well, I need to continue my laws assignment and stop my writting here. Wish you all the best. See you soon.

Yours sincere,

Lee Hua

现象阐述型英语作文范文 第4篇

浅析“幼儿学英语热”现象

文/吴锦荣

摘 要:幼儿学英语日趋成为一个热门话题,并随着国家、社会的发展成为一种趋势。各专家学者通过对幼儿生理、心理特征的分析,结合当前外语教学改革与现状研究,肯定了这股热潮朝着有利的方向发展,但与此同时,也存在着许多不可避免的弊端及问题。如何更好地引导成了解决问题的关键。

关键词:幼儿;学英语热;语言环境

一、现状及观点

英语在世界范围内的影响加深,在学前阶段开设英语课已成为当前社会的一大热点,随即在社会上掀起了幼儿学英语的热潮。当前大部分家长都希望子女能够早日掌握这门技能,而忽视了幼儿自身的能力。由于至今在社会上还未形成对这一问题的定论,学者们对此也各抒己见,也有人提出质疑,到底过早地让幼儿学英语是否合适,也有人看好这股热浪。无论如何英语热现象已呈现不可逆转的趋势。

二、幼儿学英语的有利方面

1.幼儿时期学习英语有较大的可塑性

幼儿时期是人的世界观、价值观发展的初级阶段,也是发展思维能力和形成认知机制的重要阶段,不同的教育内容和形式对以上这些因素的发展培养有重大的影响。因此,这一阶段幼儿的发展具有较大的可塑性。

幼儿在初期就接触到英语这个新事物,由于选择的内容与幼儿接近又简单,通过各类游戏等方式,在幼儿期就开始学习英语,可以培养幼儿的学习兴趣。

幼儿处于人生发展的起点,心理、生理处于成长发展的阶段,因而此阶段的幼儿学习负担较轻。幼儿时期不必面临升学方面的压力,以活动性为主的英语学习,对于他们来说没有太多心理上的负担和压力。

2.大量的外语教学改革及研究现状证明

国内外儿童心理学家一致认为:学习外语最佳年龄是12岁以前,此时幼儿的发音器官柔软,记忆力强,善于模仿,喜欢表现自己,喜欢接受新鲜事的东西,()而大量的外语教学改革实验也证明:只要不违背教学规律及幼儿的年龄阶段特征,两种语言之间的学习是可以相互促进的,而且第二语言学习能够促进幼儿思维的发展。

三、幼儿学英语的不利方面

1.从语言本质上看

幼儿习得双语言教学涉及多项能力的发展,若过多地迫使他们运用这些能力,会影响他们身心的健康发展。由于这些能力限制,学第二种语言较易遭受挫折,因此失去学习兴趣和动机。另一方面,由于他们的大脑神经机制发展还不成熟,难以承受过多的认知负荷,而且3岁前是掌握母语的关键期,母语尚在习得中,第二语言的过早介入,会干扰母语的习得。

2.从幼儿的身心发展上看

幼儿的`可塑性虽强,但他们的可控能力较差,集中注意力的时间有限,因为他们不可能把注意力完全集中在学英语上,这就对习得的结果提出了挑战。幼儿的感情比较脆弱,一旦学习中受到挫折,容易对其将来产生阴影,不利于将来学习英语。

3.从幼儿教师的师资力量上看

幼儿学英语从现实角度看,一些师资力量较强、经济条件较好的地区进行试验取得一定的效果,但当前在更大范围内幼儿教师的师资力量还是薄弱的。据辛沛沛外语研究中心调查,小学英语教师发音率不准占80%以上,幼儿园能超过90%,这样的后果是让幼儿形成错误的发音习惯,未来难以改变。

四、针对这一“热潮”所做的努力

无论如何,在幼儿英语教学中应注意要遵循语言学习的规律和儿童身心发展的规律。幼儿学英语已成为一股不可逆转的趋势,并会愈演愈烈。通过对幼儿英语利弊方面的分析,追溯到幼儿对英语学习动机、兴趣等状况,学校、社会对于幼儿英语的学习策略和方法进行探究,不论是对幼儿自身也是对当前社会学习热潮一个很好的回应,尽管当前还未形成一个完备科学的认识体系,需要的是更深入的了解、学习和研究,相信在不远的将来人们可以更好地引导这股热潮。

参考文献:

[1]田式国。英语教学理论与实践[M].北京:高等教育出版社,.

[2]周兢。幼儿园语言教育活动设计与组织[M].北京:人民教育出版社,.

[3]张志远。儿童英语教学法[M].北京:外语教学与研究出版社,.

[4]林立,董启明。英语教学与研究[M].北京:科学出版社,.

现象阐述型英语作文范文 第5篇

英语作文现象分析型写作模板

英语作文现象分析型写作模板【1】

一、现象分析型文章结构

这类题目要求考生就题干中提及的某一现象,分析其成因或影响,并提出相应的建议。

所以全文可以用三段式结构进行阐述:

第一段:描述现象

第二段:从正反两方面分析现象

第三段:就第二段的分析提出相应的建议或总结观点

二、现象分析型文章模板

文章标题

As an old saying goes,…(题干中的语句). Nowadays,…(描述题干中要求分析的现象). This, however, has made great influence on …(对哪些方面产生影响).

No one could deny the fact that….(阐述现象带来的.好处). Nonetheless(也可以用Nevertheless), people are also annoyed by …(概述现象带来的坏处). First, the development of …(现象)has brought ….

(列举现象带来的第一个坏处). For example, ….(举例进一步阐述第一个坏处)Second, ….(列举现象带来的第二个坏处). Specifically, … (进一步具体阐述第二个坏处). Therefore, it can be easily find that the disadvantages of …(现象) outweigh its advantages.

In order to remove the disadvantages, we could introduce two main measures. On one hand, we could …(提出第一个建议), which would …(简要说明该建议能带来什么影响).

One the other hand, we could…(提出第二个建议), which will probably …(概述该建议可能会带来的好处).

从上述模板可以看到,第一段是引入话题——即题干中要求分析的现象,第二段辩证分析该现象的影响,若该现象的弊大于利,同学们可按照模板中第二段进行描写;若该现象利大于弊,则同学们需要把模板中的好处和坏处调换一下,即先简要写一下该现象带来的坏处,之后,笔锋一转,着重分析好处有哪些。

分析完利弊之后,在第三段总结全文,给出自己的建议和看法。

英语作文现象每日新闻【2】

The worst predictions of sea-level rise show that by the year 2100, there will be over 13 million Americans who have to leave their homes due to climate change.

Hundreds of . counties would be permanently flooded, new research shows.

Florida would be one of the most vulnerable states, with Miami-Dade county making up about 2 million refugees.

The researchers compared the resulting population migration to the mass movement of African Americans northward at the end of the Civil War.

Previous studies did not show such large numbers of evacuees, but lately, coastal areas have had some of the most rapid population growth in the country, meaning more people would have to be eventually relocated.

高频词汇【3】

1、 notify vt. 通知,告知

2、 notion n. 概念;意图,想法

3、 resemble vt. 像,类似于

4、 reveal vt. 揭露

5、 revenue n. 收入,岁入;税收

6、 shelter n. 掩蔽处;住所

7、 shield n. 防护物,盾 vt. 保护,防护

8、 vital a. 重要的;致命的,生命的

9、 vitally ad. 极度,非常;致命地

10、 urban a. 城市的

11、 urge vt. 鼓励,激励

12、 urgent a. 急迫的,紧急得

13、 usage n. 使用,用法

14、 violence n. 强力,暴力

15、 violent a. _的

16、 violet a. 紫色的

17、 weed n. 杂草,野草

18、 welfare n. 福利

19、 whatsoever ad. (用于否定句)任何

20、 whereas conj. 然而,但是,尽管

before making

现象阐述型英语作文范文 第6篇

industrial pollution is clearly one of the biggest contributors to our polluted landscapes, at least here in the west. there are plenty of causes of land pollution, from urban and industrial ones, to rural and agricultural sources.

but which kinds of land pollution are the most important? and what can we realistically do to help prevent more pollution?

this part of the site gives an overview of some of the most important causes of land pollution, including industrial pollution.

there are also some recommendations for helping avoid domestic land pollution incidents.

click here for some good reading on industrial pollution and land pollution causes and solutions.

现象阐述型英语作文范文 第7篇

industrial pollution is the industrial production process of the formation of gas, waste water and solid emissions on the environment pollution. industrial pollution is mainly concentrated in a few industries. paper, chemical, steel, electricity, food, mining, textile and other seven sectors accounted for the total wastewater discharge 4 / 5. paper and food industry accounts for cod emissions of cod emissions 2 / 3, non-ferrous metallurgical industry, heavy metal emissions of heavy metals emissions account for nearly 1 / 2. industrial pollution is the industrial enterprises in the production process, including human biological survival and reproduction of the natural environment against. pollution is mainly from the production of the “three wastes” (waste water, waste gas, waste) and all kinds of noise caused can be divided into water pollution, air pollution, waste pollution, noise pollution.

industrial pollution hazard. first, a large number of industrial production in the discharge of untreated water, gas, slag and other hazardous waste, it will seriously damage the ecological balance of agriculture and natural resources on the development of agricultural production caused great harm; second, industrial “three wastes” of the industry production itself is also very serious hazards, toxic pollutants can corrode pipes, damaged equipment, affecting plant life, etc.; third, environmental pollution, rampant pollution, directly endangering the health of the masses; also some contamination is not easy to find, after the damage that has very serious

现象阐述型英语作文范文 第8篇

博友发来一组数据,几天来百思不解――GDP排名大幅上升,人均排名却大幅下降。现求助于您,把这一奇怪现象解开。

疑惑点:1、按说,每年GDP平均上升10%,世界第一,人均也该同步增长、排名前靠呀,怎么反而下降?2、人口增加所致?把钱用于科研了?用于教育了?用于公共福利了?用于强大军队了?都不像嘛。3、GDP做假了?人均收入计算不准了?4、留言所说错误。

那到底是怎么回事?希望:实事求是,最好用数字说话。

附:博友资料留言:

中国人均收入世界排名:

1960年为第78名,1970年为第82名,1980年为第94名,1990年为第105名,为第106名,为第127名;

中国GDP世界排名:

1978年为第15名,1990年为第10名,1995年为第7名,为第6名,第为4名,20为第2名。

现象阐述型英语作文范文 第9篇

People 主题 for a lot of different reasons. Some think It is good for , some other think It helps us .

理由一 is becoming more and more important to people. For many, this is the primary reason to 主题 . Also, 主题 is to 理由二 . This often means having the opportunity to 这样做的好处 . Besides looking for self-knowledge, people also 主题 to 理由三. For many, this will be their chance for a long time to 这样做的好处.

I would recommend that people 主题. They should 做法 to 这样做的目的一 and 这样做的目的二 . Only by this way can we 这样做的好处 .

现象阐述型英语作文范文 第10篇

it was the industrial revolution that gave birth to environmental pollution as we know it today. the emergence of great factories and consumption of immense quantities of coal and other fossil fuels gave rise to unprecedented air pollution and the large volume of industrial chemical discharges added to the growing load of untreated human waste. chicago and cincinnati were the first two american cities to enact laws ensuring cleaner air in 1881. other cities followed around the country until early in the 20th century, when the short lived office of air pollution was created under the department of the interior. extreme smog events were experienced by the cities of los angeles and donora, pennsylvania in the late 1940s, serving as another public reminder.

现象阐述型英语作文范文 第11篇

How enlightening and compelling the above drawing is!It is so funny that whoever sees it cannot help thinking:_____.(这句自己加完整,从宏观上描述一下图画就可以,笼统的,大体的.)______while_______.(这句从微观上具体说明一下图画要描述的矛盾点,必须找到矛盾点,用到while这个单词)Simple as it looks,its intended meaning goes far deeper what on earth does the drawer really aim to convey.

第二段

What the image above vividly mirrors goes far more than a simple image,instead,it carries a thought provoking social phenomenon:____.(本文的主旨)There are upsetting(如文章不是讽刺性的,就把upsetting删除)parallels today in our contemporary example,______.(举2个例子,如果字数够就举1个)

第三段:

Much can be begin with the schools and the mass media should develop,guide and cultivate noble and worthy values and qualities among people,doing their utmost to awaken people of the growing threat of this worsening situation.(of this worsening situation自己可以换成主旨的词,如果不换,这样也可以。如文章不是讽刺性的,就把worsening删除)What is more,the authorities concerned should play a dominant role in taking nationwide actions to curb(如文章不是讽刺性的,就把curb换成promote)such conclusion,all the society should make actively more sustained and concerted we still have a long way to go,a promising start has begun,and a happy,healthy and harmonious society may be not be far behind.

注意事项:

卡通cartoon也可以用以下几个picture image drawing illustration

图画Photo也可以用以下几个picture image photograph

现象阐述型英语作文范文 第12篇

In the above picture, .The promising phenomenon depicted by this picture reflects the spirit/importance of .

The importance of for the development of a person and the society has repeatedly been proved throughout the recently in the fast -paced and competitive 21st century,has it become incomparably vital to people and the is no exaggeration to say that if is not practiced/achieved/made/gained,it will be difficult for a person to successfully adapt to the ever-changing modern world and the personal failure,if becoming commonplace,may cause the serious social the modern society ,we are provided with great opportunities to ,since .

has magic can directly or indirectly bring people resources,energy and inspiration,things which are usually considered as the key to value is beyond should .

现象阐述型英语作文范文 第13篇

考研英语二作文常考的类型分别为正面现象歌颂型、反面现象批评型、对立观点、利弊分析型等。下面为大家提供考研英语二作文模板--反面现象批评型模板。

As is shown in the picture(graphcartoontable),it goes without saying that the drawing aims at revealing a common problem(in China): has attracted extensive attention of the more argumentations about it can be found in TV programs,newspapers,university classes and marry aspects of our everyday s status as the focus of public concern mainly results from its in negligible but harmful influence on individuals,collective,and even the whole world.

It seems to have a strange power to drive some individuals or organizations to act essence of these wrong actions is:(1)to gain personal,short-term and partial individual interest at the expense of damaging others’long-term and overall interest;(2)to adopt improper means to win more rewards with less must keep highly alert of the problems evoked by it,because once the harmful influence accumulates to a certain degree and then spread,it will surely threaten the development of the whole with various reasons and forms,from the perspective of the essence,the problems brought by it originates from the fundamental principle of human ideology and material should seek the solutions through setting foot on this principle.

Due to the depth and width of its harmful influence,we should draft our solution scientifically and systematically on the basis of deep analysis of its must acquire our power from technology,management,law and culture to tackle the problem,effectively eliminate the shadow of___________,and ensures ourselves a bright future.