为一年级学生准备的英语作文范文（带翻译）
【篇一】
Mother and I_妈妈和我
My name is Wu jiawei. My English name is Jerry. I like fruits *ery much, but I don’t like eating *egetables.
Sometimes I like riding a bike and doing some exercises on the playground. I don’t like reading some books, but I like drawing pictures.
I like many animals, and I like English so much.
My mum is young, she is always *ery tired because she is *ery busy. E*eryday she gets up early in the morning and cooks breakfast for us. In the e*ening, she often reads some newspaper before she goes to bed.
I lo*e my mum, and she lo*es me too!
【参考翻译】
我的名字是吴珈伟。我的英文名字是杰里。我喜欢的水果非常多，但我不喜欢吃蔬菜。
有时候，我喜欢骑自行车，做在操场上一些练习。我不喜欢读一些书，但我喜欢画画。
我喜欢许多动物，我也很喜欢英语。
我妈妈很年轻，她总是很疲惫，因为她是非常忙碌的。每天她起床清晨和煮早餐给我们。到了晚上，她经常阅读一些报纸在她上床睡觉。
我爱我的妈妈，她也爱我!【篇二】
This is me_这就是我
Hello, e*erybody! My name is Michael. I'm a happy boy. Because I laugh e*ery day. I ha*e a big family. There are three people in my family, my mother, my father and I.
My parents are managers and I'm a student. I study in Grade Se*en, Class Ele*en, Dongzhou Middle School. It's a nice place. There are many students in my class. I ha*e a good teacher, Miss Jiang.
My fa*orite lessons are English and Maths. I like dogs *ery much. I ha*e only one dog. Its name is Doudou. It's a pretty dog.
Oh, I forgot to tell you something about my old friend. His name is Tad. His hoadfdsy is playing basketball. So he is taller and stronger than I. He has two big eyes and long hair. He is my best friend.
This is me, a happy boy.
【参考翻译】
大家好!我的名字是迈克尔。我是一个快乐的男孩。因为我天天笑。我有一个大家庭。有三个人在我的家庭，我的母亲，我的父亲和我。我的父母都是经理和我是一个学生。我在学习七年级，班级十一，东洲中学。这是一个不错的地方。有很多学生在我的课。我有一个好老
师，姜小姐。
我最喜欢的课程是英语和数学。我喜欢狗非常多。我只有一只狗。它的名字叫豆豆。这是一个不错的狗。
哦，我忘了告诉你一些关于我的老朋友。他的名字叫泰德。他的爱好是打篮球。所以他高大，强于一，他有两个大眼睛，长头发。他是我的朋友。
这就是我，一个快乐的男孩【篇三】
My Teachers House_我的老师家
My English teacher has a big house.
It has a li*ing room, a big dining room, two bedrooms, a study, two bathrooms and a big kitchen.
In the li*ing room, there is a big picture, four brown sofas, white fans and blue walls. The TV set is big. There is a big Chinese knot on the wall. There are lanterns below the lights.
I like them.
This is my English teacher’s house.
【参考翻译】
我的英语老师有一所大房子。
他有一间起居室，一间大餐厅，两间卧室，一间书房两间浴室和一个大厨房。
在客厅里，有一个大的画面，四棕色的沙发，白色的风扇和蓝色的墙壁。这台电视机是大的。有一个大中国结挂在墙上。有下面的灯灯笼。
我喜欢他们。
这是我的英语老师家。
网络搜集整理，仅供参考
实用英文写作与翻译2-1作业及参考答案 第一次作业： Americans Eat Out More often and Less Healthfully Although food cooked at home is far more healthful than meals eaten at restaurants, Americans are dining out more than ever, the U.S. Agriculture Department said Tuesday. Restaurant food accounted for（[在数量，比例方面] 占） 39 percent of U.S. meals bought in 1996, up from 26 percent in 1970, the department said in a report, ``Away-From-Home Foods Increasingly Important to Quality of American Diet.'' ``While（尽管）the nutritional quality（营养质量）of foods consumed by Americans has improved overall, foods prepared at home are generally much more healthful than away-from-home foods,'' the department said. ``Despite nutritional gains at home, Americans will find it difficult to improve their diets because they purchase so many meals outside the home,'' the study said. While （尽管）the nutritional content of food prepared both at home and in restaurants has improved in recent years, food eaten out contains more of the nutrients Americans typically（一般地；通常）eat too much of, including fat and saturated fat（饱和脂肪）, and less of what is lacking from most diets, such as calcium, fiber and iron. The department recommended nutrition education programs should place more emphasis on teaching U.S. consumers about how to order healthful meals when dining out. Improved diets have been found to prevent risk of heart disease, stroke（中风）, cancer, diabetes（糖尿病）, osteoporosis-related hip fractures（与骨质疏松症有关的髋关节骨折） and neural tube birth defects（神经管先天缺损）. Osteoporosis-related hip fractures cost up to $10.6 billion each year in the United States in medical care expenses, missed work and premature deaths（早亡）, the department said. 参考译文：美国人外出用餐频繁而饮食健康水准美况愈下 据美国农业部星期二称尽管在家煮烧的食物远比餐馆里所用之餐有益于健康，美国人外出用餐更频繁。餐馆里的食物占1996年美国人购餐的39%，比1970年增长了26%。该部门在报告中称：“外出所用之餐对于美国人饮食质量日益重要”。该部门还称：“虽然美国人消费的食物的营养质量总体改善了。但是，一般来说，家里所备的食物远比外出用餐的食物有益于健康。”研究表明：“尽管在家里用餐能获取养份，美国人发觉他们难以改善自己的饮食，因为他们多次在外购餐。”近年来在家里和餐馆里所备的食物的营养结构都得到了改善，然而，外出用餐的食物包含了较多典型的美国人汲取过多的养份，包括脂肪和饱和脂肪，也包含了较少多数饮食中所缺少的，如钙，纤维和铁。该农业部提议营养教育计划应更着重于教导美国消费者外出用餐时如何预定有益于健康的一餐。人们发现改善后的饮食结构能预防心脏病，中风，癌症，糖尿病，与骨盆炎相关的髋部骨折以及试管婴儿的神经缺陷所带来的危险。该部门称，在美国与骨盆炎相关的髋部骨折每年在医疗照料费用，医疗失误和早产死亡之上的耗费高达106亿美元。 第二次作业 1、Kill one’s appetite ?Kill time ?Kill the peace ?Kill the mood ?Kill the proposal ?Kill the engine ?Kill the child with kindness 2、If the doctor had been available, the child would not have died. 3、This ticket is available in all parks. 4、I’ll have Mr. Perkin call you back as soon as he is available.
关于我的姐姐英语作文100字带翻译 我有一个漂亮的姐姐，她的名字叫苏升煜。今年21岁，上大学二年级。 I have a beautiful sister. Her name is Su Shengyu. I＇m 21 years old. I＇m a sophomore. 她长着一双大眼睛，长长的黑头发，红红的嘴唇，翘翘的眼睫毛，长得漂亮极了！ She has a pair of big eyes, long black hair, red lips, curly eyelashes, very beautiful! 她小时候，学习可好了，还是纪律班长呢！ When she was a child, she had a good study. She was still the monitor of discipline! 她的爱好是读书、看书，平时还喜欢看花草树木，还喜欢郊游、游泳。 Her hobbies are reading, reading, usually like to see flowers and trees, also like outings, swimming. 我的姐姐还特别能干呢，她到了奶奶家，吃完饭都是她洗碗。奶奶睡觉的时候，弟弟会哭，姐姐就哄他睡觉。 My sister is also very capable. She went to grandma＇s house and washed dishes after dinner. When grandma goes to bed, his younger
brother will cry and his elder sister will coax him to sleep. 我喜欢这个漂亮能干爱学习的好姐姐。 I like this beautiful, capable and studious sister.
2017-09-01 20:19:45文/张秀秀 英语作文是英语考试必考的题目，中考英语也不例外。很多同学对于觉得英语作文十分难写，不知道如何入手。以下是初三网整理的中考英语作文范文5篇带翻译，欢迎参阅。 Everyone has their own dreams, I am the same. But my dream is not a lawyer, not a doctor, not actors, not even an industry. Perhaps my dream big people will find it ridiculous, but this has been my pursuit! My dream is to want to have a folk life! I want it to become a beautiful painting, it is not only sharp colors, but also the colors are bleak, I do not rule out the painting is part of the black, but I will treasure these bleak colors! Not yet, how about, a colorful painting, if not bleak, add color, how can it more prominent American? Life is like painting, painting the bright red color represents life beautiful happy moments. Painting a bleak color represents life difficult, unpleasant time. You may find a flat with a beautiful road is not very good yet, but I do not think it will. If a person lives flat then what is the point? Life is only a short few decades, I want it to go Finally, Each memory is a solid. 【翻译】 每个人都有自己的梦想，我也一样。但是我的梦想不是律师，不是医生，不是演员，甚至不是一种行业！ 我的梦想也许大人们会觉得可笑，但是，这是我一直追寻的！我的梦想是想要自己有一个七彩的人生！我要它成为一幅美丽的画，它不但要有鲜明的颜色，也要有暗淡的颜色，我不排除这幅画有一部分的黑色，我反而会很珍惜这些暗淡的颜色！不是吗，试问一下，一幅色彩鲜艳的画，如果不加一点暗淡的颜色，又怎能更突出它的美呢？ 人生就象画一样，画中鲜艳的颜色就代表着人生美丽快乐的时光。画中暗淡的颜色就代表着人生遭遇困难，不愉快的时候。也许你会觉得拥有一条平坦美丽的路不是很好吗，但我并不觉得。 一个人如果一生平坦那有什么意思呢？人生只有短短几十年，我要他走到最后时，每一个回忆都事充实的！ I eat breakfast everyday, because it’s important to my health. At first, I did not like eating breakfast, but my mother forced me to eat. Every morning, my mother prepared delicious breakfast for me, such as milk, egg, bread and others. Gradually, I liked having breakfast. I feel energetic after having breakfast. Having delicious and nutrient breakfast brings me a happy day. I hope everyone can build this healthy habit
英语翻译题20套(带答案) 一、高中英语翻译 1．高中英语翻译题：Translation: Translate the following sentences into English, using the words given in the brackets. 1．究竟是什么激发小王学习电子工程的积极性？(motivate) 2．网上支付方便了客户，但是牺牲了他们的隐私。(at the cost of) 3．让我的父母非常满意的是，从这个公寓的餐厅可以俯视街对面的世纪公园，从起居室也可以。(so) 4．博物馆疏于管理，展品积灰，门厅冷落，急需改善。(whose) 【答案】 1．What on earth has motivated Xiao Wang’s enthusiasm/ initiative to major in electronic engineering? 2．Online payment brings convenience to consumers at the cost of their privacy. 3．To my parents’ satisfaction, the din ing room of this apartment overlooks the Century Park opposite the street and so it is with the sitting room. 或者What makes my parents really satisfy is that they can see the Century Park from the dining room of this apartment, so can they from the living room. 4．This museum is not well managed, whose exhibits are covered with dust, and there are few visitors, so everything is badly in need of improvement. 或The museum whose management is reckless, whose exhibits are piled with dust and whose lobby is deserted, requires immediate improvement. 【解析】 1．motivate sb to do sth 激发某人做某事，on earth究竟，major in 以…为专业，enthusiasm/ initiative热情/积极性，故翻译为What on earth has motivated Xiao Wang’s enthusiasm/ initiative to major in electronic engineering? 2．online payment网上支付，brings convenience to给…带来方便，at the cost of以…为代价，privacy隐私，故翻译为Online payment brings convenience to consumers at the cost of their privacy. 3．To my parents’ satisfaction令我父母满意的是，后者也那样so it is with。也可以用主语从句What makes my parents really satisfy 表语从句thatthey can see the Century Park from the dining room of this apartment。overlooks俯视，opposite the street街对面，living room 起居室。故翻译为To my parents’ satisfaction, the dining room of this apartment overlooks the Century Park opposite the street and so it is with the sitting room.或者What makes my parents really satisfy is that they can see the Century Park from the dining room of this apartment, so can they from the living room. 4．not well managed/ management is reckless疏于管理，be covered with dust/ be piled with dust被灰尘覆盖，few visitors游客稀少，be badly in need of improvement/ requires immediate improvement亟需改善。故翻译为his museum is not well managed, whose exhibits
中考英语作文50篇带翻译
中考英语作文50篇（带翻译） 1、The Person I Like Best 我最喜欢的人 I have many friends，but I like Li Lei best. He is a good student. He always helps others. He likes reading books, so he knows many things. He is very helpful to us. He often helps me with my study. We are good friends. We often play games and do sports together. We enjoy ourselves every day. Li Lei is the person I like best. 我有很多朋友, 但我最喜欢李磊。他是个好学生。他总是帮助别人，他喜欢读书，所以他知道很多东西。他很乐于帮助我们。他经常帮助我学习。我们很好朋友们。我们经常一起玩游戏，一起做运动。我们每天都玩得开心。李磊是我最喜欢的人。 2、My Good Friend 我的好朋友 Tom is my good friend. He is 16 years old. He comes from America. He lives with his parents in China. He likes playing football, singing and drawing. He is good at English, but his Chinese isn’t good. He often helps me with my English, and I help him with his Chinese. We go to play football every Sunday. We always feel happy when we get together. Tom是我的好朋友。他16岁。他来自美国。他与父母一起生活在中国。他喜欢踢足球、唱歌和画画。他英语很好，但他的中文不好。他
英语小短文带翻译100字20篇 1.A happy Day It was sunny and very hot today. I got up early and helped my parents cook breakfast. Then I washed the dishes and cleaned the room. After a short rest I did my homework in the morning. In the afternoon I went swimming in the nearest swimming pool with my friends. It was really cool to swim in such a hot day. I surfed the internet and read a storybook in the evening. I really had a busy and happy day. 今天天气晴朗比较热。我起得很早，帮父母做早饭。然后我洗碗打扫屋子。休息一会后我上午做作业。下午我和朋友去我家最近的游泳池游泳。在如此炎热的夏天游泳的确很棒。晚上我上网、看故事书。我今天很忙过得很快乐。 2.给笔友的一封信 Dear Lucy I am very glad to hear from you. Now let me introduce myself to you. My name is Li Lei. I am eleven years old. I am tall with a pair of glasses. Now I am studying at Yuying Primary School. I am in Class One，Grade 5. I like singing and playing the piano very much. I am good at English and Chinese. 很高兴收到你的来信。现在让我介绍我自己。我叫李雷。11岁。我高个子、带眼镜。我在育英小学。我在五年级一班。我非常喜欢唱歌和弹钢琴。我数学和语文学得都很好。 3。暑假打算 I will have a busy summer vacation. I am going to do my homework every day . I am going to the library to borrow some books and go to the shops to buy some books.I am going to do sports such as playing table tennis, swimming and so on. I am going to visit my grandparents and stay there for a week. I am going to help my parents do some housework. 我暑假会很忙。我每天要写作业。我打算去图书馆去借书、去商店买书。我要做运动，如：打乒乓球、游泳等。我要去看爷爷奶奶并在那住一周。我要帮父母做家务。 4.自我介绍 Hello, everyone. My name is Kelly. I am friendly and honest.I am good at English and maths. I like surfing the internet,playing computer games, watching TV and traveling. I also like playing table tennis and I am good at it ,too. I often play table tennis with my friends on weekends. And I want to be a famous table tennis player when I grow up. What I like most is to see the seagulls flying freely in the sky so I often go to the sea in summer. My favourite colour is white because I think white is symbolize purity. 大家好我的名字叫KELLY .我很友好、诚实。我擅长英语和数学。我爱上网、玩电脑网络游戏、看电视和旅游。我也喜欢打乒乓球。我经常和朋友们在周末打乒乓球，长大了我想当一个乒乓球运动员。最喜欢在海边看着海鸥自由自在的飞翔，因此在夏天我经常去海边。白色是我的最爱。因为我觉得白色是纯洁的象征。 5.A nice Sunday It is Sunday and it is a fine day today. We come to the People Park with our English teacher who came from Canada. Look ! Tom and other five boys are playing
带翻译高一英语作文范文 In everybody’s eyes, I am a good girl, because I make the good marks in the exams and help my parents to do things. Unlike other students, who will go against their parents, I follow my parents’words. I don’t think that to do something goes against the adults is the wise choice, but I do want to do something new. Recently, I want to cut my hair and make the short style. My mother doesnt agree with me, because she thinks a girl should have the long hair. This time, I insist on my idea. Finally, she supports me. Trying something new makes me feel happy and be myself. The short hair makes me look like a cool boy and I like this style. My friends admire me to have the courage to change my image.在大家眼中，我就是一个好女孩，因为我考试成绩好，还帮助父母做事。不像其他学生，会和父母作对，我很听父母的话。我认为做一些违背大人们的事情是不明智的选择，但我想做一些创新。最近，我想把我的头发剪了，留短发。我妈妈不同意我的做法，因为她认为一个女孩就应该留长头发。这一次，我坚持我的想法。最后，她支持了我。尝试新事物让我感到预约，做我自己。短发使我看起来像一个很酷的男孩，但是我喜欢这种风格。我的朋友都羡慕我有勇气去改变自己的形象。 高一英语作文范文（二）
Unit 1 课后作文范文 Sample 1: My Father It’s said that mother’s love is the greatest love in the world, but if you can notice some small things, you’ll find that father’s love is also the greatest. My father, as a man, usually hide the deep love for behind the c ool face. Don’t have much to say, while sitting with me, but what he has done for me clearly show that he loves even more than himself. I still remember the night, when the wind blowed crazily, he stood in the rain, at the bus stop, waiting for me, quietly. Though he had stood in rain for hours, the only sentence from his mouth was “OK, Let’s go home!” I’ll never forget the love by my dear mother, I’ll also concrete the figure in the
暑假英语作文50字带翻译 快乐暑假，早已来到;烦恼压力，抛之脑后;收拾心情，放松身体;调节身心，齐头并进;努力拼搏，新的学期。暑假快乐!精心收集了暑假英语作文50字带翻译，供大家欣赏学习! 暑假英语作文50字带翻译1 I had a happy summer holiday because I did many interesting things. I went to the beach and I swam in the sea.I called my friend and played with them.I visited my grandparents and ate much delicious food. Then I went to the zoo whit my sister.I was very happy.Because I saw a lot of animals.They were very lovely.So I took photos of all animals.I liked the butterflies best.They were colourful and beautiful.My sister liked it too. I had a wonderful summer holiday this year. 我有一个快乐的暑假因为我做了许多有趣的东西。 我去了海边我在大海里游泳。我打电话给朋友和他们玩了。“我去拜访我的祖父母和吃了许多美味的食物。然后我与我的妹妹去了动物园。我非常高兴。因为我看见很多动物。他们很可爱。
所以我拍照所有的动物。还有我最喜欢的喜欢蝴蝶。他们是五彩缤纷的和美丽的。我的妹妹非常喜欢它们。 今年我有一个很棒的暑假。 暑假英语作文50字带翻译2 This July, I graduated from primary school. I was enrolled to a good middle school. Therefore, I had a happy and leisure summer holiday. In the middle of July, I attended to a summer camp. It’s about English. There were twenty five students in the camp. We all like English very much. Together, we studied and played. There were many activities, team work or single performance. We tried our best to put ourselves into this big family. Most of the time, we talked to each other in Engl ish. If we really don’t know how to express in English, we could ask for help. Our teachers were so great that they could help us a lot. They were so active that make us acted as they did. I am happy to attend this activity. 这个七月，我从小学毕业了。我被一所优秀的中学录取了。因此，我度过了一个开心闲暇的暑假。七月中旬，我参加了英语夏令营。营里总共有25名学生，我们都很喜欢英语。我们一起学习，一起玩耍。有很多活动，有团队和个人表演。我们尽自己最大努力融入这个大家庭。大部分的时间，我们都是用英语交谈。如果我们真的不知道怎样用英语表达的话，我们可以寻求帮助。
国庆英语作文100字带翻译 国庆长假我只休了一天，为了中新食品园区建设，我没有假日，想想别人都带着孩子出去游玩，我真愧对孩子，早上孩子没醒就上班，晚上也回来很晚，只是检查孩子一天的学习情况，但路开非常懂事，还处处为我着想，真难为孩子，不知老师如何评价孩子，但我相信路开是最棒的！ I only had a day off for the National Day holiday. I didn＇t have a holiday for the construction of China Singapore Food Park. I was ashamed of my children. I went to work in the morning before they woke up and came back late at night. I just checked the children＇s study in one day, but Lu Kai was not always sensible. He was always thinking about me. It was hard for him. I didn＇t know how to evaluate him, but I Believe that road is the best! 妈妈谢谢你！生活总有不如意的，望多理解，理解万岁！ Thank you mom! There is always something wrong with life. Hope to understand more and understand forever!
写作技巧 一、了解高分作文的特点 要想作文获得高分，必须了解高分作文具有的特点，才有助于我们朝之而努力。高分作文一般具有以下特点： 1、书写工整，书面整洁，很少有涂改痕迹。 2、分段合理。全文分段一般不止一个自然段，让阅卷老师很容易就能找到作文所要求写的要点和重要句子。 3、要点齐全，不缺要点。 4、首尾呼应，自然成一体。 5、使用了大量的高级词汇和句型。阅卷老师一看就知道这个同学的功底非不一般，自然就给打高分了。 6、开头言简意赅，不啰嗦，不偏题，迅速引入主题。 7、段与段之间，自然过渡。有合适的连接词。 8、句与句之间，有恰当的连接词，使之自然成一体。 9、全文中同一个意思，基本没有重复使用某一个词、短语或者句型等，说明这个同学的词汇量不同寻常。老师自然就对该作文有好感了。 10、能够恰当使用谚语、格言等给文章添彩。 二、勤积累，巧准备 要想作文得高分，除了了解以上的特点外，还要在平时的学习中注意一下方面： 1、牢记课标词汇是基础 一篇作文多数是由积极词汇写出来的，这些词汇主要来源于课标。因此，牢记课标词汇是写好作文的基础。 2、掌握课标词汇和短语的用法 要想作文不扣分或者少扣分，有个要作文的语病少。怎么能够减少语病呢？这就要求我们在平时的学习过程中反复通过练习，掌握课标词汇和短语等的用法。例如，对于as soon as 、stop some body from doing something 、other 、another等的用法很多学生就经常出错。 3、高度重视同一个意思的多种表达方式 高分作文有个特点是：让老师发现你拥有丰富的词汇量，你的水平高人一筹。这由何而来？靠我们在平时学习过程中，逐步积累起来的。比如：今年的中考作文，谈的就是帮助他人的问题。同一个意思“帮助”，假如你就用一个动词“help”，岂不显得你词汇贫乏？假如你在作文中不断地变换方式，用help、give somebody a hand、 give a hand to somebody 、be in need of 等以表达“帮助”同一个意思，岂不更好呢？ 像这样的例子很多，比如：大家都觉得很简单又很基础的“表示的方式”就有：My name is Jim. I’m Jim. I’m called/named Jim. I’m a boy called /named /with the name of Jim. 等等。 表达年龄的方式有：She is 12. She is 12 years old. She is aged 12. She is a girl of 12(years old) . She is a girl aged 12.等等。 很显然，使用高级一点的更好。 4、加强练习，积累经验 学习语言最好的方法是运用，作文也不例外。我们要想作文得高分，必须经常练习，才能提高水平。 5、充分利用作文文 很多资料书上都有作文文。诚然，他们有很多值得借鉴的地方。 我们怎么利用它们呢？首先，我们先不要看文章，自己先思考一下：假如你来写，你会怎么去写，会用到哪些词或者句子等。然后去比较，勾出其中的好词佳句，并且把它摘录在专门的作文册子上。供写作时选用。 另外，背一些文也是很有必要的。 6、背诵一些谚语和警句 作文中如果出现恰当的谚语和警句，会有锦上添花的效果。 三、精心审题，沉着写初稿 很多同学看到作文后，下笔就写。这是不对的。一则很容易写偏题、写出病句，涂改后书面又不整洁，影响得分。 其实，会写作文的同学都知道，审题非常的重要，可以防止很多毛病，提高得分。那么我们审题要做些什么呢？
Unit5元素周期表 1.随着对原子的描述越来越详尽，我们发现自己处于进退两难之地。涉及着100 种元素，我们怎样使这些元素保持连续性。一种方法是用元素周期表，周期表把原子信息列成表。它记录着一种元素含有多少质子和电子，它使我们可以计算出大多数元素同位素的中子数。周期表也存有每种元素的电子排列情况。周期表最不寻常的是它的发展是在人们还不知道原子中含有质子和中子之前。 2.道尔顿提出了他的原子模型后不久（一种不可再分的粒子，它的质量取决于 它的性质），化学家开始根据原子质量来排列元素。当得出这种元素表，科学家们观测到元素的规律。例如，那些出现在特定的位置重的元素有某些相似性，这一观点已经越来越明显。当时已知的约60种元素中，第二种和第九种元素表现出相似性，第三种与第十种元素，第四种与第十一种元素也都具有相似的性质。 3.1869年，门捷列夫，一个俄国化学家，提出了他们的元素周期表。他列表时 考虑到原子质量和元素某种特性的周期性。这些元素主要是按原子质量递增的顺序排列的。在特别情况下，门捷列夫把较重的元素放在较轻元素之前。 他这样做是为了在相同列上的元素有相似的化学性质。比如，他把蹄（原子质量=128）放在碘（原子质量=127）之前，因为蹄的性质和硫及硒相似，而碘的性质和氯及溴相似。 4.门捷列夫i在他的周期表中列了许多气体，在他的周期表中留下了一些空格， 他非但没有将那些空格看成缺憾，反而大胆地预测还存在着未被发现的元素。而且，他还预测了许多未知元素的性质。在接下来的几年里，许多气体被填充在新发现的元素中。这些元素的性质通常和门捷列夫预测的非常接近。这些伟大创新的预测使门捷列夫的元素周期表被广泛接受。 5.我们都知道，一种元素的性质主要取决于原子最外层能级上的电子数。Na 在它的最外层能级（第三层）有一个电子，Li原子在它的最外层（第二层）有一个单独的电子。Na和Li的化学性质相似。He和Ne原子已将所有能级排满，它们性质也相似，就是不容易发生化学反应。很明显，不仅具有相似性电子构型（排列）的原子有相似的化学性质，而且，某种电子排列会比其他的排列更稳定。 6.在门捷列夫的元素周期表中，大多数情况下元素是按照原子质量排列的。这 种排列也揭示了元素化学的周期性。因为电子数决定了元素的化学性质，所以电子数也应该决定元素在周期表中的位置。在现代元素周期表中，元素是按照原子序数来排列的。注意，这个数表明在一种元素的中性原子中有多少质子和中子。现代元素周期表，根据原子序数的递增而排列的，而门捷列夫周期表是以原子质量的递增来排列的，通常原子序数的增加是与原子质量的增加同步的。在特殊情况下，原子质量落后于原子序数，因为原子质量是质子和中子质量的而加和，故原子质量并不完全随原子序数增加而增加。有可能一种较低原子序数的原子有更大的原子质量。因此可以在元素周期表上看出来。Ar原子的质量比k原子的质量重。Te原子比I原子质量重。 7.现代元素周期表的竖列叫做族。每一族的元素在最外层能级上有相同的电子 数，因而有相反的化学性质，水平的行叫做周期。每一新周期预示着主电子能级的开始。例如，na从第三行开始。它的最外电子层是第三层第一个电子，因为每一行就开始了一个新的能级，所以我们可以从上到下预测原子的大
[假期生活英语作文50词带翻译]英语作文120词带翻译每个人的假期都是不尽相同的，对于你来说，你的假期是怎样的?下面，是为你的假期生活英语作文50词带翻译，希望对你有帮助! I had a joyful summer vacation. During the holidays, I traveled with my families. We went to Bei __g and stayed there for four days. We lived in the hotel. It is very beautiful. We visited to the Tiananmen Square, the Imperial Palace, the Summer Palace and the Old Summer Palace. We also went to the Great Wall. The weather was very hot, but we were exciting. I like Bei __g very much. I hope I can go there again. 我度过了一个愉快的暑假。假期期间，我和家人去旅游了。我 们去了北京并在那里待了四天。我们住在酒店里。北京很美，我们参观了 __广场，故宫，颐和园和圆明园。我们还去了长城。北京的天 气很热，但是我们很兴奋。我很喜欢北京，我希望还能再去那里。 I was happy this summer holiday! Do you know why? Because I had enjoyed a good summer holiday! In the morning, sometimes I went toYueXiuParkto play badminton with my families or friends. We always went to McDonald's to have lunch after we finish the game. My sister and me like swimming, so in the