我随便拿了一张作业本大小的纸折了起来,前几次还顺利,折到第五次时,就只有一个瓶盖那么大了,连第六次都折不到、我拿来一块石头,使劲向纸砸去,可是,第六次纸总也折不上去,还开着口,好像在嘲笑我。我想,一定是这张纸太小了,我去找一张大纸来!
这次用的是一张报纸,我边折边想,这次一定可以了。三次,四次……我心里很高兴,哼起了小曲,可折到第七次时,就折不动了。我想;这张纸太厚了!不行,找一张薄的试试。
我找到了一张半透明的宣纸,心想,这张又大又薄的纸一定可以折到九次,但是最终的结果是——最多折七次,第八次只能折一半,再不能完全折过去。我不相信,又反复试了好几次,结果仍然一样。
这究竟是为什么呀?我用计算器算一下。我一算,第一次是2层,第二次是4层……第七次是128层,第八次是256层,第九次就是512层啊!而折第八次时,这张纸的面积就剩先两平方厘米了,要在这么小的.面积上折512层,当然折不过去了!
在这虽然是一个小实验,却让我懂得了一个道理:要想得到科学的结论,不能凭空想象,而是亲自去尝试。每一个科学的结论,都是经过数十次,数百次,乃至上千次尝试。写出这篇文章的作者,肯定不知实验了多少次,才得出了这个结论,如果有条件,都可以去亲自验证一下。对待科学的态度应该是认真的、严谨的,只有接受住反复的验证的结论,才是一个令人信服的结论。
由于在很多情况下,说明文是对客观存在的说明与介绍,因此语言的表述也应该尽可能地给人以客观可信的感觉,比如:
(1)I think that getting up late is not always a bad thing.
(2)It is said that getting up late is not always a bad thing.
相比之下,例(2)的语言要比例(1)的语言客观一些,容易让人接受一些。如果再作一些表述上的改动:
(3)Getting up late is not always a bad thing, according to Franklin Smith, a well-known psychologist in Stanford University.
引进著名人士作为信息的来源,可以使想要说明的内容更具有说服力。如果我们将例(3)中的always再改为necessarily,就可使整个句子更客观、委婉,便于为读者接受:
(4)Getting up late is not necessarily a bad thing, according to Franklin Smith, a well-known psychologist in Stanford University.
在英语中,采用被动语态,引进权威的信息来源以及选用委婉的词语是使说明文避免主观色彩,增加客观性,从而为读者接受的重要语言手段
Dear July,
Hello,I am Dick! I am good looking with curly hair.I wear a pair of glasses because I study hard!I am a bit tall .My dream is becoming a teacher.Because I want to work with students.And my hobby is reading.
Let me introduce(介绍my family.I have a warm family.The members (成员of my family are my mom,dad,and I.My mom is very beautiful and she is kind to (对某人慈祥me.My dad is very strict(严厉的 and I am afaid of(害怕某人 him.We are all good with(和某人相处得好 anyone.
What about you and your family?Please write me a letter soon!
Yours
Dick
__________.
There are many reasons explaining__________________________.The
main reason is____________________.
what is more_________________________.thirdly_________________
_________.As a result_______________.
Considering all there,________________________.For one thing_______
______________,for another________
____.In Conclusion____________________.
一种事物或现象(负面意义倾向)
关于A的话题,早已引起了广泛的社会关注。如今在电视、报纸、日常生活的很多角落,都有越来越多的关于A的议论。
给A一个精确恒定的定义并非易事,因为它的概念涉及了科学、人性、思想、经济、社会、自然等广阔的领域。一般而言,我们可以这样描述A…
A能成为公众关注的焦点,主要是由于它对个人、集体乃至整个世界都有着不容忽视的不良影响。
认真分析后我们可以看到,A对社会/世界 /健康的不利有很多。首先,从最直观的角度来看,A的出现直接损害了(这里加入一句针对性的话,如人类的身体健康和环境的平衡) 。(举例)。其次,从更深一层次上讲,它为人类的精神文明蒙上了一层阴影。更可怕的是,由于A所产生微小利益,却促成了许多可悲的人们为其忘乎所以,破坏了人类生存的法则和空间。
事实上,A的出现是社会发展和人类进步的产物,A所带来的危害是人类进化过程中付出的代价。同时,A的产生来源于部分人们的自私和趋利性,他们看到的是肤浅和片面的'利益,而从未从整个全局和人类整体的利益出发去认识和分析它。这使得A始终挥之不去。对此,我奉劝他们,跳出狭小的角落,用长远和全局的眼光去重新审视A。
而如今,我们已深受其害,要想消除它的危害,我们必须从根源上杜绝它的产生,我们每一个人都应给予A高度的重视,用系统的和科学的方法去解决,唯有这样,避免它带来更多损失,我们人类前进的脚步才会更加平稳,更加欢快的迈向辉煌的明天。
dear xxx,
hi,i am xxx,allow me to tell you something about my hobbies and living habits.i think i am a social person,i have a great circle of friends,they all admire me for my great sense of humour.i am talkative ,i am on the school debate team and i always win.i like reading magazines or newspapers after class,i think they can help me know more about the world.i also do well in my school work.i also like playing sports especially ball games such as basketball,volleyball and soccer.but i am not very good at it.i think i have a healthy life style ,my living habits are prettey good.i always get up early in the morning,i never go to school without breakfast.and in the evening ,i never go to bed late,i finish my homework very fast.but only one living habit is not very healthy,that is ,i have a bad habit of eating dessert.
what are your hobby and living habits?could you tell me more about your life?please contact me as soon as possible.
looking forward to your reply.
yours,
xxx
Dear wu Yanzu:
You are my favourite superstar.I am addicited to your films and some other works.Our teacher asked us to write a letter to a superstar. You come to mine mind firstly. I am inertested in a question.That is why you are not good at our mother tongue.I am anxious to eat your cooking.It must be taste good.Oh i can not wait.How I wish I could taste it at once. You hurt your nose in an accident.I am very wooried about that,can I have a look at your nose.Yang Qianhua is a so good singer.You two look like a couple,and you will be good lovers.
Yours
XXX
By the time you read this you will be 30. At the age of 18 I had so many hopes and dreams about where you'd be, what you'd be doing and with whom you'd spend your life with.
Right now I hope that you have traveled and seen everything you've always wanted to, both in Canada and overseas, and maybe even settled down somewhere in Australia doing some research in the field of biology (genetics.
I hope you're married to the man of your dreams. The man of mine is Gwynn. He is originally from South Africa (another place I wish to visit.
You'll probably have two children of your own – a girl(Michaela Anne and a boy (name yet to be decided.If everything goes according to plan you'll be living in Australia in a big house in a small town outside of a big city with a lot of land, a dog, Gwynn and your two beautiful children. Hopefully you have a career in the medical field, maybe doing research in genetics. Gwynn will be a computer programmer and you will be doing alright for yourselves.
However, if things don't go according to plan for you, I wish you all the love, happiness and joy in the world and don't settle for anything less than the best since that is absolutely what you deserve.
Live long, be happy and live life to it's fullest.
Love Sherri "18″
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