用英语阐述吸烟的危害 急 谢谢

Smoking is bad for health

Smoking KILLS Every year hundreds of thousands of people around the world die from diseases caused by smoking. One in two lifetime smokers will die from their habit. Half of these deaths will occur in middle age. Tobacco smoke also contributes to a number of cancers. The mixture of nicotine and carbon monoxide in each cigarette you smoke temporarily increases your heart rate and blood pressure, straining your heart and blood vessels. This can cause heart attacks and stroke. It slows your blood flow, cutting off oxygen to your feet and hands. Some smokers end up having their limbs amputated. Tar coats your lungs like soot in a chimney and causes cancer. A 20-a-day smoker breathes in up to a full cup (210 g) of tar in a year. Changing to low-tar cigarettes does not help because smokers usually take deeper puffs and hold the smoke in for longer, dragging the tar deeper into their lungs. Carbon monoxide robs your muscles, brain and body tissue of oxygen, making your whole body and especially your heart work harder. Over time, your airways swell up and let less air into your lungs. Smoking causes disease and is a slow way to die. The strain put on your body by smoking often causes years of suffering. Emphysema is an illness that slowly rots your lungs. People with emphysema often get bronchitis again and again, and suffer lung and heart failure. Lung cancer from smoking is caused by the tar in tobacco smoke. Men who smoke are ten times more likely to die from lung cancer than non-smokers. Heart disease and strokes are also more common among smokers than non-smokers. Smoking causes fat deposits to narrow and block blood vessels which leads to heart attack. Smoking causes around one in five deaths from heart disease. In younger people, three out of four deaths from heart disease are due to smoking Please quip smoking for the sake of your health!请采纳 谢谢

Smoking is harmful to your health Smoking is not a good habit because it is harmful to people"s health. If you *** oke a lot,you will be unhealth.Many people *** oke too much every day,they bee thinner and weaker.We know every year many people have died from nicotine. Smoking in the public does harm to people around you. Our government has issued" No *** oking" regulations in airplanes, on trains and at cinemas. Let"s try our best to help the *** okers give up 吸烟有害健康 吸烟不是一种好习惯，因为它是对人们的健康有害。如果你吸烟很多,你将变得不健康。许多人每天抽太多烟,他们变得更瘦弱。我们知道每年有许多人死于尼古丁。吸烟在公众场合也确实影响到周围的人。我们的 *** 已经发布了在飞机上,火车上和在电影院“禁止吸烟”的规定。我们应该尽力帮助吸烟者戒烟。 第二篇供参考我就不翻译了 Smoking is a bad habit that does harm to *** oker and others. Many kinds of diseases and cancers are caused by *** oking, such as trachitis, lung cancer and many other diseases. Recent years, there are tens of thousands of people dying of *** oking. But there still are many people enjoying *** oking, because they think *** oking is a kind of fashion and *** oking is so cool, especially among teenagers. In addition, *** oking does harm to others as well. Second hand *** oking has been recognized harmful to other people. Even worse, it may cause more damages. Therefore, people should remember that *** oking is harmful to others and those people who *** okes should give up *** oking as soon as possible. 　　en 　　Smoking is harmful to your health If you *** oke a lot,you will be unhealth.Many people *** oke too much every day,they bee thinner.Cigarettes are made of Poppy（罂粟）。Although this is a kind of beautiful flowers,it is toxic(有毒) flowers.Either you *** oke a lot every day or *** oke fewer.I suggest you don"t *** oke more cigarettes,because it is good for your health. 请采纳 谢谢了 采纳我吧 谢谢

Today smoking is a widespread habit ali over the world. Not only the old, the youth, but also middle school students have been engaged in smoking. Many of them think that smoking is a smart symbol.However, smoking is harmful to one"s health. It contributes a lot of lung cancer, from which many people have died in the past years. It can also cause many other diseases. In a word, if you smoke, you do have a much greater chance of losing your health. Furthermore, scientific research shows that smoking is not only harmful to smokers themselves, but also a threat to public health, especially to women and children. Therefore, many countries have made laws forbidding smokers to smoke m public places such as cinemas, stations, hospitals, and so on Giveup smoking! If you don"t smoke, don"t start. Give upsmoking for the sake of your health, for the sake of your family, and for the sake of the whole world.

A popceman is not allowed to *** oke on duty . 警察值班时不准 吸烟 。 Excessive *** oking is harmful to one "s health . 吸烟 过多对身体有害处。 There is a tie-in beeen *** oking and cancer . 吸烟 与癌症有关联。 Never stop! you can talk as you *** oke . 不许停！你可以一面说话一面 吸烟 。 Non- *** okers often disapprove of *** okers . 不 吸烟 的人往往不赞成别人吸烟。 Teachers discountenanced *** oking by the students . 教师们反对学生们 吸烟 。 Shall we sit in a *** oker or a non- *** oker ? 我们坐 吸烟 车厢还是非吸烟车厢？ Smoking has a great deal to do with lung cancer ... 吸烟 和肺癌有很大关系。 Smoke is almost as great a solvent as divorce . 吸烟 和离婚已变成两大消溶剂。 Smoking is bad for you ; you ought to pack it in . 吸烟 对你很不好，应该戒掉。 Does *** oking contribute to lung cancer ? 吸烟 会导致肺癌吗？ Can you feature *** oking here ? 在这种场合 吸烟 ，你能想像吗？ Smoking is not allowed in first class . 头等舱中不准 吸烟 。 Smoking can be damaging to your health . 吸烟 对身体有害。 Smoking is harmful to your health . 吸烟 有害于你的健康。 There is a prohibition against *** oking . 那里禁止 吸烟 。 Gentlemen are requested not to *** oke . 先生们请勿 吸烟 。 He spoke to the class about the dangers of *** oking . 他对班上学生讲了 吸烟 的危害性。 I started *** oking again the day after the funeral . 送葬回来的当天，我又开始 吸烟 了。 All my friends do not *** oke . 我的朋友并不全都 吸烟 。 He stank the whole house out with his tobacco *** oke . 他 吸烟 把整所房子弄得难闻极了。 Smoking is no good for health . 吸烟 无益于身体健康。 Smoking is responsible for many cases of lung cancer . 吸烟 是许多人患肺癌的致病因素。 Smoking does harm to one "s health . 吸烟 妨害健康。 Smoking will tell on you when you "re getting old . 你上年纪时就会感受到 吸烟 的影响了。 Smoking is pernicious to health . 吸烟 对健康有害。 I never *** oke , no sir ! 我从来不 吸烟 ，绝对不吸。 Most doctors advise cutting down on coffee and tobacco . 大多数医生建议少喝咖啡，少 吸烟 。 Smoking is a danger to health . 吸烟 危害健康。 Smoking can cause lung cancer . 吸烟 可致肺癌。 She expostulated with her hu *** and on his habit of *** oking in bed . 她规劝其丈夫改掉在床上 吸烟 的习惯。 To impose a penalty on *** oking in the street is a stretch of the law . 对街上 吸烟 罚款是对法律的滥用。 To impose a penalty on *** oking in the street is a stretch of the law . 对在街上 吸烟 罚款是对法律的滥用。 He *** okes too much . 他 吸烟 过多。 She expostulated with her hu *** and about his habit of *** oking in bed . 她规劝其丈夫改掉在床上 吸烟 的习惯。 They perceive alcohol and tobacco use as symbols of manhood . 他们觉得饮酒和 吸烟 是具有男子汉气质的标志。 He never *** okes . 他素来不 吸烟 。 "no *** oking" is a rule quite unrelated to any procedure . “禁止 吸烟 ”是一条规则，而完全与程序没有联系。

Smoking Is HarmfulIt is said that about half of people in China *** oke. Many young boys and girls have the habit of *** oking, though they are middle school students As we all know, *** oking does great harm to human beings. More and more people have e to realize how serious this problem is. But they are never bored with it. Some people think it is a kind of fashion, some think it is of great fun and others think that *** oking can refresh themselves. Smoking causes many illnesses. A lot of people always cough because of *** oking. The most serious illness caused by *** oking is lung cancer. Meanwhile *** oking is a waste of money. Besides, careless *** okers may cause dangerous fires. In order to keep healthy, we should get rid of the bad habit of *** oking. Please stop *** oking at once 中文翻译：吸烟有害 据说,中国有一半人在吸烟.许多男孩和女孩都有吸烟的习惯,尽管他们还是中学生. 众所周知,吸烟对人身体有害.越来越多的人们认识到这个问题的严重性,但他们仍然乐此不疲.一些人认为抽烟是一种时尚,一些人认为抽烟很有趣,还有一些人认为吸烟可以提神. 吸烟能导致很多疾病.由于吸烟,一些人一直在咳嗽.肺癌是吸烟导致的最严重的疾病.同时,吸烟很浪费金钱.除此而外,粗心的烟民还可能引起火灾. 为了保证人们的身体健康,我们应当改掉吸烟的坏习惯.请立即停止吸烟吧

no smoking 拜托采纳把

1 翻译为 smoking causes fatal lung cancer吸烟导致致命的肺癌2 smokingn.吸烟，抽烟; v.冒烟( smoke的现在分词); 抽烟; 用烟熏制; 吸（烟）; causes[英][kɔ:zɪz][美][kɔ:zɪz]n.原因( cause的名词复数 ); 动机; （某种行为、感情等的）理由; 缘故; fatal[英][ˈfeɪtl][美][ˈfetl]adj.致命的，攸关的; 毁灭性的，严重的; 命中注定的; 重大的; lung[英][lʌŋ][美][lʌŋ]n.肺; 呼吸器官; [医]辅助呼吸的装置; 〈英〉可供呼吸新鲜空气的地方;

吸烟的好处？

18. 定语从句 定语从句（Attributive Clauses）在句中做定语，修饰一个名词或代词，被修饰的名词,词组或代词即先行词。定语从句通常出现在先行词之后，由关系词（关系代词或关系副词）引出。 关系代词有：who, whom, whose, that, which等。 关系副词有：when, where, why等。 18.1 关系代词引导的定语从句 关系代词所代替的先行词是人或物的名词或代词，并在句中充当主语、宾语、定语等成分。关系代词在定语从句中作主语时，从句谓语动词的人称和数要和先行词保持一致。 1）who, whom, that 这些词代替的先行词是人的名词或代词，在从句中所起作用如下： Is he the man who/that wants to see you? 他就是你想见的人吗？（who/that在从句中作主语） He is the man whom/ that I saw yesterday. 他就是我昨天见的那个人。（whom/that在从句中作宾语） 2) Whose 用来指人或物，(只用作定语, 若指物，它还可以同of which互换）, 例如： They rushed over to help the man whose car had broken down. 那人车坏了，大家都跑过去帮忙。 Please pass me the book whose (of which) cover is green. 请递给我那本绿皮的书。 3）which, that 它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，例如： A prosperity which / that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣。（which / that在句中作宾语） The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。(which / that在句中作宾语） 18.2 关系副词引导的定语从句 关系副词可代替的先行词是时间、地点或理由的名词，在从句中作状语。 1）when, where, why 关系副词when, where, why的含义相当于"介词+ which"结构，因此常常和"介词+ which"结构交替使用，例如： There are occasions when (on which) one must yield. 任何人都有不得不屈服的时候。 Beijing is the place where (in which) I was born. 北京是我的出生地。 Is this the reason why (for which) he refused our offer? 这就是他拒绝我们帮助他的理由吗？ 2）that代替关系副词 that可以用于表示时间、地点、方式、理由的名词后取代when, where, why和"介词+ which"引导的定语从句，在口语中that常被省略，例如： His father died the year (that / when / in which) he was born. 他父亲在他出生那年逝世了。 He is unlikely to find the place (that / where / in which) he lived forty years ago. 他不大可能找到他四十年前居住过的地方。 18.3 判断关系代词与关系副词 方法一： 用关系代词，还是关系副词完全取决于从句中的谓语动词。及物动词后面无宾语，就必须要求用关系代词；而不及物动词则要求用关系副词。例如： This is the mountain village where I stayed last year. I"ll never forget the days when I worked together with you. 判断改错（注：先显示题，再显示答案，横线；用不同的颜色表示出。） （错） This is the mountain village where I visited last year. （错） I will never forget the days when I spent in the countryside. （对） This is the mountain village (which) I visited last year. （对） I"ll never forget the days (which) I spent in the countryside. 习惯上总把表地点或时间的名词与关系副词 where, when联系在一起。此两题错在关系词的误用上。 方法二： 准确判断先行词在定语从句中的成分(主、谓、宾、定、状)，也能正确选择出关系代词/关系副词。 例1. Is this museum ___ you visited a few days age? A. where B. that C. on which D. the one 例2. Is this the museum ____ the exhibition was held. A. where B. that C. on which D. the one 答案：例1 D，例2 A 例1变为肯定句： This museum is ___ you visited a few days ago. 例2变为肯定句： This is the museum ___ the exhibition was held. 在句1中，所缺部分为宾语，而where, that, on which都不能起到宾语的作用，只有the one既做了主句的表语，又可做从句的宾语，可以省略关系代词，所以应选D。 而句2中, 主、谓、宾俱全，从句部分为句子的状语表地点，既可用副词where，又因 in the museum词组，可用介词in + which 引导地点状语。而此题中，介词on 用的不对，所以选A。 关系词的选择依据在从句中所做的成分，先行词在从句中做主、定、宾语时，选择关系代词 (who, whom, that, which, whose)； 先行词在从句中做状语时，应选择关系副词 ( where 地点状语，when 时间状语，why 原因状语) 。 18.4 限制性和非限制性定语从句 1) 定语从句有限制性和非限制性两种。限制性定语从句是先行词不可缺少的部分，去掉它主句意思往往不明确；非限制性定语从句是先行词的附加说明，去掉了也不会影响主句的意思，它与主句之间通常用逗号分开，例如： This is the house which we bought last month. 这是我们上个月买的那幢房子。（限制性） The house, which we bought last month, is very nice.这幢房子很漂亮，是我们上个月买的。（非限制性） 2) 当先行词是专有名词或物主代词和指示代词所修饰时，其后的定语从句通常是非限制性的，例如： Charles Smith, who was my former teacher, retired last year. 查理u2022史密斯去年退休了，他曾经是我的老师。 My house, which I bought last year, has got a lovely garden. 我去年买的的那幢房子带着个漂亮的花园。 This novel, which I have read three times, is very touching. 这本小说很动人，我已经读了三遍。 3) 非限制性定语从句还能将整个主句作为先行词, 对其进行修饰, 这时从句谓语动词要用第三人称单数，例如： He seems not to have grasped what I meant, which greatly upsets me. 他似乎没抓住我的意思，这使我心烦。 Liquid water changes to vapor, which is called evaporation. 液态水变为蒸汽，这就叫做蒸发。 说明：关系代词that和关系副词why不能引导非限制性定语从句。 18.5 介词+关系词 1）介词后面的关系词不能省略。 2）that前不能有介词。 3） 某些在从句中充当时间，地点或原因状语的"介词+关系词"结构可以同关系副词when 和where 互换。 This is the house in which I lived two years ago. This is the house where I lived two years ago. Do you remember the day on which you joined our club? Do you remember the day when you joined our club? 18.6 as, which 非限定性定语从句 由as, which 引导的非限定性定语从句，as和which可代整个主句，相当于and this或and that。As一般放在句首，which在句中。 As we know, smoking is harmful to one"s health. The sun heats the earth, which is very important to us. 典型例题 1）Alice received an invitation from her boss, ___came as a surprise. A. it B. that C. which D. he 答案C. 此为非限定性从句，不能用 that修饰，而用which.，it 和he 都使后句成为句子，两个独立的句子不能单以逗号连接。况且选he句意不通。 2）The weather turned out to be very good, ___ was more than we could expect. A. what B. which C. that D. it 答案B。which可代替句子，用于非限定性定语从句，而what不可。That 不能用于非限定性定语从句，it不为连词，使由逗号连接的两个句子并在一起在英语语法上行不通。 3）It rained hard yesterday, ____ prevented me from going to the park.. A. that B. which C. as D. it 答案B. as 和which在引导非限制性定语从句时，这两个关系代词都指主句所表达的整个意思，且在定语从句中都可以作主语和宾语。但不同之处主要有两点： (1） as 引导的定语从句可置于句首，而which不可。 (2） as 代表前面的整个主句并在从句中作主语时，从句中的谓语必须是系动词；若为行为动词，则从句中的关系代词只能用which.。 在本题中，prevent由于是行为动词，所以正确选项应为B。 As 的用法 例1. the same… as；such…as 中的as 是一种固定结构, 和……一样……。 I have got into the same trouble as he (has). 例2. as可引导非限制性从句，常带有"正如"。 As we know, smoking is harmful to one"s health. As is know, smoking is harmful to one"s health. As是关系代词。例1中的as作know的宾语；例2中，它充当从句的主语，谓语动词know要用被动式。 18.7 先行词和关系词二合一 1)Whoever spits in public will be punished here. (Whoever 可以用 anyone who 代替) 2)The parents will use what they have to send their son to technical school. (what 可以用all that代替) 18.8 what/whatever;that/what; who/whoever 1）what = the thing which；whatever = anything What you want has been sent here. Whatever you want makes no difference to me. 2) who= the person that whoever= anyone who （错）Who breaks the law will be punished. （错）Whoever robbed the bank is not clear. （对）Whoever breaks the law will be punished. （对）Who robbed the bank is not clear. 3) that 和 what 当that引导定语从句时 ，通常用作关系代词，而引导名词性从句时，是个不充当任何成分的连接词。宾语从句和表语从句中的that常可省略。What只能引导名词性从 句， 用作连接代词，作从句的具体成分，且不能省略。 I think (that) you will like the stamps. What we need is more practice. 18.9 关系代词that 的用法 1）不用that的情况 a) 在引导非限定性定语从句时。 (错) The tree, that is four hundred years old, is very famous here. b) 介词后不能用。 We depend on the land from which we get our food. We depend on the land that/which we get our food from. 2) 只能用that作为定语从句的关系代词的情况 a) 在there be 句型中，只用that，不用which。 b) 在不定代词，如：anything, nothing, the one, all, much, few, any, little等作先行词时，只用that，不用which。 c) 先行词有the only, the very修饰时，只用that。 d) 先行词为序数词、数词、形容词最高级时，只用that。. e) 先行词既有人，又有物时。 举例： All that is needed is a supply of oil. 所需的只是供油问题。 Finally, the thief handed everything that he had stolen to the police. 那贼最终把偷的全部东西交给了警察。 定语从句里的

太多了，而且才30财富

【 #英语资源# 导语】吸烟有害健康，每个人都应该照顾自己的身体。 ！ 【篇一】关于戒烟的高一英语作文 　　At present, many teenagers smoke. I don"t think it"s a good phenomenon. It must be stopped, for smoking is harmful in many ways. 　　目前，很多青少年吸烟。我不觉得这是一个好的现象。这种现象必须要停止，因为吸烟在很多方面都是有害的。 　　First, smoking is bad for our health. As we start smoking, it"s so difficult to give up, because the tobacco contains a drug called nicotine, which can get us into the habit of smoking. When we go without nicotine, our bodies will feel sick. 　　首先，吸烟对我们的健康有害。我们一开始吸烟，就很难戒掉，因为烟草含有一种叫尼古丁的药物，它能让我们养成吸烟的习惯。当我们体内没有尼古丁时，我们就会感到恶心。 　　Second, smoking is so dangerous. When we smoke in bed, we may kill ourselves as well as burn down our houses, for burning cigarette ends may cause a big fire. And if we threw the cigarette ends anywhere, it would also cause a fire disaster. 　　第二，吸烟是危险的。我们在床上吸烟的时候，我们可能会导致自杀或者烧毁房子，杀死自己，因为燃烧的烟头可能引起火灾。如果我们把烟头丢在任何地方都有可能会引起火灾。 　　Furthermore, once we smoke in public, we may make other people feel uncomfortable as well. 　　此外，如果我们在公共场所吸烟，我们可能会让其他人感到不舒服。 　　Accordingly, for the sake of your and others" health, please don"t smoke. 　　因此，为了您和他人的健康，请不要吸烟。 【篇二】关于戒烟的高一英语作文 　　Nowadays, more and more people realize the harm of smoking and the damage it bring to the people around us. Considered the health of people themseves and the one they care, many smokers try their best to give up smoking. When quiting smoking, I have some suggestions. First of all, people should have strong will on giving up smoking. Personal determination is the most important factor. When feeling eager to smoke, people should think about the damage of smoking and the people they love. And then they can strengthen their will not to smoke. 　　Secondly, sweep away all the cigarette around. They can"t find any cigarette when they want to smoke. And then after a while, their wants for smoke will reduce gradually. 　　Last but not least, prepare some candies in the pocket, when people want to smoke, eat candies instead. Hope every smoker succeed in the end. 【篇三】关于戒烟的高一英语作文 　　As we all know, there are many people smoking, although everyone knows smoking is harmful to us. Giving up smoking is not easy but addicted to it is quite easy, that"s why there are more and more people smoking. Smoking and passive smoking is risk factor that leads to various diseases. It has become world"s top 8 causes of death. More than 90% of lung cancer caused by smoking and lung cancer rates of smokers are 18 times over the non-smokers. Besides, smoking also causes angiocardiopathy, digestive system disease, oral disease and so on. In addition, passive smoking causes great concern in recent years. People have known that passive smoking also do great harm to human, too. Therefore, many countries and regions prohibit people from smoking in public zones, in order to reduce the harm of secondhand smoke. From my point of view, the best way to keep healthy is giving up smoke, for smoker"s own good as well as for others. 　　众所周知，即使人们都知道吸烟有害健康，但现在依然有很多人吸烟。吸烟容易戒烟难，这就是为什么烟民越来越多的原因。吸烟以及吸二手烟都是导致多种疾病的危险因子，烟草已经成为全球第八大死因。超过90%的肺癌是由吸烟导致的，吸烟者患肺癌的几率是非吸烟者的18倍之多。此外，吸烟也会导致心血管病、消化系统疾病、口腔疾病等。此外，吸二手烟在近些年也引起了人们很多的关注，它也会对人体造成危害。因此，为了减少二手烟伤害，许多国家和地区都禁止人们在公共场所吸烟。我认为，为了自己也为了他人的健康着想，保持健康的办法就是戒烟。 【篇四】关于戒烟的高一英语作文 　　It"s well known that smoking is bad for our health. It does much harm to our lung. Smoking too much is very easy to get cancer， which is very terrible. 　　Besides， smoking also do harm to people"s teeth. Those people always smoke will demage their teeth and their teeth are always yellow. That makes others feel sick. The last but not least， the people smoke the passive smoking are tend to get sick. They have do nothing wrong，but stand beside those smoking people. It"s unfair. 　　So， in order to the health of everyone， please stop smoking. 【篇五】关于戒烟的高一英语作文 　　Smoking is a widespread habit even among school children. The number of young smokers is increasing. 　　It is reported that over two-fifths of the students in a certain school smoke, and some of them even steal money to buy cigarettes, This is terrible. 　　As we all know, smoking is harmful to our health. But its even more harmful to middle school students for it does great harm not only to their health but also to their mind. 　　Middle school students are future builders of the country. They should spend their time learning what is useful. So its really time that these young smokers made up their minds to give up smoking.

NO Smoking Now, we can see the notice "No smoking" here and there. Whyuff1fBecause smoking is bad for our health. It can cause many kinds of disease, and even can lead to lung cancer. Every year, many people die of smoking. But many people begin to smoke. Once he smokes, he is used to it. It"s hard to stop smoking because the smokers are addicted to a drug called "nicotine". Though it"s very hard, I suggest they try their best to give it up. Smoking is not only bad for the smoker himself, but also for the people around. We should do something to help the smokers give up smoking.

Should Smoking in Public Places be Banned? 　　Nowadays many countries in the world have passed laws to ban smoking in public places. Some smokers claim that their rights are infringed if smoking is forbidden in public places. However, most non-smokers regard the ban as good news. As far as I"m concerned, smoking should be banned in all the public places such as restaurants, theaters and public squares.　　On the one hand, smoking is harmful both for smokers themselves and others. It is reported that every year smoking causes millions of death around the world. On the other hand, smoking pollutes the air. Just imagine that you sit in a restaurant full of smoke, how can you enjoy your meal there? Besides, smoking is bad for the elevation of a country"s image in the world.　　I believe if smoking is banned in all the public places, most of us will breathe in more fresh and clean air. And the health condition of all the people will be greatly improved.

smokingdoesgreatharmtoyourhealth.或smokingcausesgreatdamagetoyourhealth.

Smoking Is Harmful　　 At the class meeting our teacher read us a report in the newspaper. A certain student in a middle school smoked and he wouldn"t get rid of the bad habit though his teacherand friends warned him not to smoke any more. He even stole money to get cigarettes and was pat into prison in the end. This really gave usa shock. As we all　　 smoking is very harmful to our health. It does great harm not only to our health, but also to our mind, especially for us teenagers. Now more and more people all over the world have given up smoking or have made up their minds to do so, I think we middle school students are the future builders of our country. We should study hard and make progress every day. We should form good habits so that we can spend our time learning things useful and valuable for our motherland and people, I think today"s class meeting is very meaningful to my classmates who have a bad habit of smoking. (160 words)

It has been estimated that smokers have made up half of the population in China. And the smokers are becoming younger and younger, even ineluding some middle school students.Nowadays more and more people have realized smoking can do harm to people"shealth. However, some people still enjoy smoking. Why? Because some of them think it is a kind of fashion, some think it is of great fun and others, think that smoking can refresh themselves.In fact, smoking is a bad habit. It can cause a lot of diseases. Meanwhile smoking is a waste of money. Besides, careless smokers may cause dangerous fires.Smoking is harmful and it is not only bad for smokers themselves, but also bad for non-smokers.Therefore, I hope all the smokers can give up smoking for themselves and also for the people around them. 据估计，在中国吸烟者约占总人口的一半，而且烟民的年龄越来越年轻，甚至一些中学生也在抽烟。如今越来越多的人们已经认识到吸烟有害人体健康，但他们仍然乐此不疲。为什么?一些人认为抽烟是一种时髦，另外一些人认为抽烟很有趣，还有一些人认为吸烟可以提神。事实上，吸烟是一种不好的习惯，它能导致很多疾病。同时，吸烟很浪费金钱。除此而外，粗心的烟民还可能引起火灾。吸烟对人们的身体百害而无一利。它不仅有害吸烟者本人，而且对不吸烟者也会造成损害。因此，我希望吸烟者为自己和身边的人们而戒烟。It is said that there are about half of people in China are smoking.Many young boys and girls have the habit of smoking, though they are middle school students.As we all know, smoking does great harm to human beings. More and more people have come to realize how serious this problem is. But they are never bored with it. Some people think it is a kind of fashion, some think it is of great fun and others think that smoking can refresh themselves.Smoking causes many illnesses. A lot of people always cough because of smoking. The most serious illness caused by smoking is lung cancer. Meanwhile smoking is a waste of money. Besides, careless smokers may cause dangerous fires.In order to keep healthy, we should get rid of the bad habit of smoking. Please stop smoking at once.据说，中国有一半人在吸烟。许多男孩和女孩都有吸烟的习惯，尽管他们还是中学生。众所周知，吸烟对人身体是有害的。越来越多的人们认识到这个问题的严重性，但他们仍然乐此不疲。一些人认为抽烟是一种时髦，一些人认为抽烟很有趣，还有一些人认为吸烟可以提神。吸烟能导致很多疾病。由于吸烟，一些人一直在咳嗽。肺癌是吸烟导致的最严重的疾病。同时，吸烟很浪费金钱。除此而外，粗心的烟民还可能引起火灾。 为了保证人们的身体健康，我们应当改掉吸烟的坏习惯。请立即停止吸烟吧。

Smoking is prohibitedDO NOT SMOKING

吸烟有害健康，他会引发许多疾病，如心脏病,肺癌Smoking is harmful to health, it will lead to many diseases, such as heart disease,and lung cancer

1 If you don"t come to the office, I"ll go to your house and find out why you are not at work.选D I"ll go ;are not 2 You"ve agreed to go,so why aren"t you getting ready? But I haven"t realise that you want me to start at once.选B haven"t realized ,want3 Having reched his journey"s end, Carl hoped to find a hotel to stay the night.选C to stay D to past4 Smoking is harmful to health is a fact many smokers choose to ignore.选D Smoking is harmful to health5 It can be said that it pays to invest more in education and scientific research.选A pays6 This pair of trousers isn"t good, and that pair is hardly better.选D hardly7 The secretary was asked to get rid of the waste paper on the desk.选A get rid of

Cigarette is expensive, smoker spends a lot.2 吸烟有害健康，对周围不抽烟的人造成影响。Smoking is harmful to health.3 抽烟者的不慎会引起火灾，造成生命和财产损失。Ignorance of smoker shall cause fire making loss of life and destroying 4 青年人在长身体，又没有收入，吸烟更加有害。 Smoking is more harmful to young people who is physically unmatured and has no income.

Smoking does great harm to teenagers" health

harmfulto。beharmful后面加to，意思是，有害例句：Smokingisharmfultohealth.吸烟有害身体健康。一、重点词汇解析harmful，读音英[hɑ_mf_l-f(_)l]，美["hɑrmf_l]adj，有害的，能造成损害的例，Theyareallha。

硝酸钾KNO3；硝酸钠NaNO3；硝酸银AgNO3；硝酸钙Ca（NO3）2；硝酸镁Mg（NO3）2；硝酸钡Ba（NO3）2；硝酸锌Zn（NO3）2；硝酸铝Al（NO3）3；硝酸铜Cu（NO3)2；硝酸铁Fe（NO3）3；硝酸亚铁Fe（NO3）2；硝酸铵NH4NO3；硫酸钾K2SO4；硫酸钠Na2SO4；硫酸银Ag2SO4；硫酸钙CaSO4；硫酸镁MgSO4；硫酸钡BaSO4；硫酸锌ZnSO4；硫酸铝Al2（SO4）3；硫酸铜CuSO4;硫酸铁Fe2（SO4）3；硫酸亚铁FeSO4；硫酸铵（NH4)2SO4；碳酸钾K2CO3；碳酸钠Na2CO3；碳酸根CO32-；碳酸钙CaCO3；碳酸镁MgCO3；碳酸钡BaCO3；碳酸锌ZnCO3；碳酸铝Al2（CO3）3；碳酸铜CuCO3；碳酸铁Fe2（CO3）3；碳酸亚铁FeCO3；碳酸铵（NH4)2CO3；甲烷CH4；葡萄糖C6H12O6；高锰酸钾KMnO4；锰酸钾K2MnO4；氯酸钾KClO3；碳酸氢钠NaHCO3；碳酸氢钙Ca（HCO3）2；磷酸氢钙CaHPO4；磷酸二氢钙Ca（H2PO4)2

断开醛基中的碳氢键,在碳氢之间插入氧原子：c-h被打断变成-cooh2ch3cho+o2---(催化剂)2ch3cooh这个氧化不一定要用氧气，用其它的氧化剂都能将它氧化成乙酸，如双氧水或其它过氧化物，有机氧化物，金属氧化物等

看下书吧，应该是

2CH3CHO+O2--->2CH3COOH反应类型是氧化反应.或者用银氨溶液反应氧化,用新制的氢氧化铜反应也可以.

乙醛氧化成乙酸时将碳氧双键断开，一个键分给原来的氧，一个给羟基。

结合乙醛的结构，说朋乙醛的氧化反应和还原反应有什么特点 乙醛既有氧化性，又有还原性，偏重于还原性，这点类似于无机中的二氧化硫。乙醛发生氧化反应即在醛基的碳氢键中插入一个氧原子，使其变为羧基，常见的反应是乙醛与银氨溶液、新制氢氧化铜、氧气等物质反应。乙醛发生还原反应即在醛基的碳氧双键上加氢，变为醇羟基。 醛的氧化反应和还原反应有什么规律？ 醛被氧化生成的是酸，醛被还原生成的是醇 乙醇变乙醛反应型别是氧化还原反应吗？ 是的 属于脱氢氧化反应 乙醛可以看作是乙醇的什么产物？表示还原反应和氧化反应搞不清楚 这是一个去氢反应，是氧化反应。 例如： 2CH3CH2OH+O2——＞2CH3CHO+2H2O （其中用Cu或Ag做催化剂） 氧化反应和氧化还原反应有什么区别 氧化反应一般是说“某某物质发生了氧化反应” 而氧化还原反应说的是“这个反应是氧化还原反应” 氧化反应和还原反应是相伴而生的 氧化反应是化学方程式中仅有化学价升高，而氧化还原反应既有化学价升高又有化学价降低 在初中把氧化反应和还原反应分开来说，主要是针对于反应的实际应用价值而言。比如高炉炼铁的反应，Fe2O3 + 3CO = 2Fe + 3CO2，实际上是一个典型的氧化还原反应，这里Fe2O3发生了还原反应，CO发生了氧化反应，而在初中我们只说这个反应是还原反应，就是因为这个反应在工业生产中的主要目的就是还原Fe2O3炼铁。 到了高中，我们知道了，实际上，氧化反应和还原反应一定是同时发生的，有元素化合价升降的反应就是氧化还原反应。 但是依然存在氧化反应和还原反应的概念，这是因为在原电池中，我们可以将氧化还原反应拆解成正极反应和负极反应去研究。 因此，氧化反应既可以理解成氧化还原反应，也可以理解成原电池中氧化还原反应的一个组成部分。 另外，在有机化学中，只讲氧化反应和还原反应。因为这里的氧化还原与无机里的定义是不同的。 蜡烛燃烧，在初中关注实际效果的前提下，就是氧化反应。但是从本质上说，它当然是典型的氧化还原反应。 氧化还原反应和氧化反应有什么关系 氧化反应和还原反应同时存在 所以氧化反应只是氧化还原反应的一部分 即还原剂发生氧化反应 氧化还原反应和氧化反应有什么不同？ 氧化还原反应和氧化反应本质上没有不同，只不过一个突出强调了反应的实质，有化合价升降以及电子得失。而氧化反应其实是针对某个物质而言，从而归类，比如说乙醇氧化成乙醛是氧化反应，这是因为我们把乙醇作为研究物件，而忽略了氧气的变化，把氧气作为次要因素考虑了。 氧化铜和乙醛反应吗？ 不反应……

没说配制成什么样啊？比如需要配制的溶质溶剂溶液什么的，溶质质量分数多少什么的??

两类反应,第一类是在贴钴镍催化作用下,氧化为乙酸； 2CH3CHO + O2 ==催化剂==== 2CH3COOH 中间要有催化剂,这是乙醛的催化氧化 第二类是直接氧化,即燃烧,完全燃烧生成CO2和H2O,不完全燃烧的话生成CO和H2O. 2CH3CHO + 5O2===点燃==== 4CO2 + 4H20

氧化钾：K2O，氢氧化铜：Cu(OH)2,氢氧化钙:Ca(OH)2,硝酸银:AgNO3,硫酸钡:BaSO4,氯化钡:BaCl2,氯化钙:CaCl2，氢氧化钠:NaOH5555选我吧，累死我了

最简单的判别方法是看最后的生成物和原反应物相比是加氢还是去氢

醛的溶液与新制Cu(OH)2反应，新制Cu(OH)2的浊液必须呈碱性，即NaOH要过量。这是反应所要求的，然后加热煮沸才会有预期的实验现象。

硝酸银怎样和氨水反应过程和化学式：1、刚滴入氨水，硝酸银过量Ag(+) + NH3.H2O = NH4(+) + AgOH(白）2AgOH = H2O + Ag2O (灰黑）2、过量的NH3.H2O，沉淀溶解得到无色溶液Ag2O + 4NH3.H2O = 2[Ag(NH3)2]OH + 3H2O在氨水中滴加硝酸银溶液，一水合氨水大量存在，先生成AgOH，再与氨水中的氨分子络合形成[Ag(NH3)2]OH这是络合物，能稳定存在，是无明显现象。在硝酸银溶液滴加氨水，硝酸银过量，生成白色的AgOH很不稳定，无法和氨分子进一步络合，立刻会分解，形成Ag2O，黑色微溶于水的固体。

第一步催化氧化生成乙醛，第二步继续催化氧化生成乙酸2CH3CH2OH+O2——2CH3CHO+2H2OCH2OH的前面两个H由-1价被氧化成H2O的1价，而CH2OH则被还原，由0(零)价还原成H2O的-2价。2CH3CHO+O2——2CH3COOHCHO的H由-1价被氧化COOH的+1价，O2由0(零)价还原成COOH的-2价。

　　乙醛的催化氧化是加成反应，反应方程式为：2CH3CHO+O2(Ag，加热)=2CH3COOH。 　　乙醛的催化氧化反应原理： 　　工业制乙醛方程式： 2CHu2083CHu2082OH+Ou2082→ 2CHu2083CHO+2Hu2082O(加热，催化剂Cu/Ag) 　　乙炔水化法：Cu2082Hu2082+Hu2082O→CHu2083CHO(催化剂，加热)(是加成反应，也是还原反应) 　　乙烯氧化法：2CHu2082=CHu2082+Ou2082→2CHu2083CHO(催化剂，加热，加压) 　　乙醛催化氧化：2CHu2083CHO+Ou2082 →2CHu2083COOH(催化剂，加热) 　　 乙醛 　　乙醛又名醋醛，是一种无色易流动液体，有刺激性气味，可与水和乙醇等一些有机物质互溶。盛装乙醛时，要用耐压玻璃瓶或金属桶盛装。装好后必须放在有冷气设备，通风良好，用不燃材料结构的库房内，要远离火种和热源，防止阳光直射。应与氧化剂、强碱、氨、胺类、卤素、醇+酮、酚等物质，以及遇水燃烧的物质分隔存放。包装必须坚固密封，不宜久存。搬运要轻放轻卸。

乙烯氧化法：2CH2=CH2+O2－→2CH3CHO（催化剂，加热，加压）在氯化钯-氯化铜的催化作用下。乙烯是怎样氧化成乙醛。方程：CH2==CH2 + 1/2O2 --→ CH3CHO (条件：PbCl2-CuCl2,H2O,125-130℃，0.4MPa)具体原理有两种，一是自由基机理，二是亲电加成后再消去（为什么反应条件中要水的原因）。CH2==CH2 + H2O--→ CH3CH2OH（条件：催化剂，加热加压） 乙烯与水加成生成乙酸 2CH3CH2OH+O2--→2CH3CHO+2H20（条件：催化剂，加热） 酸催化氧化成醛

酸 硫酸 H2SO4 亚硫酸 H2SO3 盐酸 HCl 硝酸 HNO3 硫化氢 H2S 碳酸 H2CO3 初中常见物质的化学式 氢气 碳 氮气 氧气 磷 硫 氯气 （非金属单质） H2 C N2 O2 P S Cl2 钠 镁 铝 钾 钙 铁 锌 铜 钡 钨 汞 （金属单质） Na Mg Al K Ga Fe Zn Cu Ba W Hg 水 一氧化碳 二氧化碳 五氧化二磷 氧化钠 二氧化氮 二氧化硅 H2O CO CO2 P2O5 Na2O NO2 SiO2 二氧化硫 三氧化硫 一氧化氮 氧化镁 氧化铜 氧化钡 氧化亚铜 SO2 SO3 NO MgO CuO BaO Cu2O 氧化亚铁 三氧化二铁（铁红） 四氧化三铁 三氧化二铝 三氧化钨 FeO Fe2O3 Fe3O4 Al2O3 WO3 氧化银 氧化铅 二氧化锰 (常见氧化物) Ag2O PbO MnO2 氯化钾 氯化钠(食盐) 氯化镁 氯化钙 氯化铜 氯化锌 氯化钡 氯化铝 KCl NaCl MgCl2 CaCl2 CuCl2 ZnCl2 BaCl2 AlCl3 氯化亚铁 氯化铁 氯化银 （氯化物/盐酸盐） FeCl2 FeCl3 AgCl 硫酸 盐酸 硝酸 磷酸 硫化氢 溴化氢 碳酸 （常见的酸） H2SO4 HCl HNO3 H3PO4 H2S HBr H2CO3 硫酸铜 硫酸钡 硫酸钙 硫酸钾 硫酸镁 硫酸亚铁 硫酸铁 CuSO4 BaSO4 CaSO4 KSO4 MgSO4 FeSO4 Fe2 (SO4)3 硫酸铝 硫酸氢钠 硫酸氢钾 亚硫酸钠 硝酸钠 硝酸钾 硝酸银 Al2(SO4)3 NaHSO4 KHSO4 NaSO3 NaNO3 KNO3 AgNO3 硝酸镁 硝酸铜 硝酸钙 亚硝酸钠 碳酸钠 碳酸钙 碳酸镁 MgNO3 Cu(NO3)2 Ca(NO3)2 NaNO3 Na2CO3 CaCO3 MgCO3 碳酸钾 （常见的盐） K2CO3 氢氧化钠 氢氧化钙 氢氧化钡 氢氧化镁 氢氧化铜 氢氧化钾 氢氧化铝 NaOH Ca(OH)2 Ba(OH)2 Mg(OH)2 Cu(OH)2 KOH Al(OH)3 氢氧化铁 氢氧化亚铁（常见的碱） Fe(OH)3 Fe(OH)2 甲烷 乙炔 甲醇 乙醇 乙酸 (常见有机物) CH4 C2H2 CH3OH C2H5OH CH3COOH 碱式碳酸铜 石膏 熟石膏 明矾 绿矾 Cu2(OH)2CO3 CaSO4u20222H2O 2 CaSO4u2022H2O KAl(SO4)2u202212H2O FeSO4u20227H2O 蓝矾 碳酸钠晶体 （常见结晶水合物） CuSO4u20225H2O Na2CO3u202210H2O 尿素 硝酸铵 硫酸铵 碳酸氢铵 磷酸二氢钾 （常见化肥） CO(NH2)2 NH4NO3 (NH4)2SO4 NH4HCO3 KH2PO4 沉淀： 红褐色絮状沉淀--------Fe(OH)3 浅绿色沉淀------------Fe(OH)2 蓝色絮状沉淀----------Cu(OH)2 白色沉淀--------------CaCO3,BaCO3,AgCl,BaSO4,(其中BaSO4、AgCl是不溶于 HNO3的白色沉淀,CaCO3 BaCO3是溶于HNO3 的白色沉淀),Mg(OH)2. 淡黄色沉淀(水溶液中)----S 微溶于水------------Ca(OH)2,CaSO4

碳氢键。乙醛氧化成乙酸是断开醛基中的碳氢键，在碳氢之间插入氧原子，所以乙醛氧化成乙酸断键位置是碳氢键。乙醛，又被称为醋醛，分子式为CH?CHO，是一种醛类有机化合物。

乙酸这是醛基的性质：氧化生成羧基

银是显+1价的

是氧化反应乙酸又名醋酸 主反应：乙醛+氧气→ 反应：①主反应：乙醛+氧气→乙酸 副反应：氧化、酯化生成甲酸、醋酸甲酯

C2H4O,这种物质有毒,其合成在高中知识中有所提及.这里为你简单的介绍几种： 1.乙烯直接氧化法　 乙烯和氧气通过含有氯化钯、氯化铜、盐酸及水的催化剂,一步直接氧化合成粗乙醛,然后经蒸馏得成品. 2.乙醇氧化法　 乙醇蒸气在300-480℃下,以银、铜或银-铜合金的网或粒作催化剂,由空气氧化脱氢制得乙醛. 3.乙炔直接水合法　 乙炔和水在汞催化剂或非汞催化剂作用下,直接水合得到乙醛.因有汞害问题,已逐渐为他法取代. 4.乙醇脱氢法　 在添加钴、铬、锌或其他化合物的铜催化剂作用下,乙醇脱氢生产乙醛. 5.饱和烃类氧化法. 原料消耗定额：乙炔水合法每吨产品消耗99%乙炔610kg；乙醇氧化法消耗95%乙醇1200kg；乙烯氧化法（一步法）消耗99%乙烯710kg,氧气（99%）300立方米.市售工业品乙醛,乙烯法乙醛纯度为99.7%,乙醇法纯度为98%.[1] 工业制乙醛方程式：2CH3CH2OH+O2→ 2CH3CHO+2H2O（加热,催化剂Cu/Ag） 乙炔水化法：C2H2+H2O→CH3CHO（催化剂,加热） 乙烯氧化法：2CH2=CH2+O2→2CH3CHO（催化剂,加热,加压） 化学分子式你需要自己二次编辑,百度知道回答不支持这类特殊排版.

硝酸铜的化学式是：Cu(NO₃)₂硝酸银的化学式是：AgNO₃

Pt 能,因为连cu(OH)2这样的弱氧化剂都可氧化它.

硝酸银的化学式为AgNO3。醇溶液并不是硝酸银的一种化学式，而是指硝酸银溶解在醇中形成的溶液。在化学式中，醇通常用ROH表示，其中R代表一种有机基团。因此，硝酸银在醇中形成的溶液可以表示为AgNO3·ROH，其中ROH代表醇分子。

醛糖会氧化而使溴水褪色。由于酸性条件下,不会引起单糖分子的异构化作用。酮糖不发生此反应,因此可以利用溴水是否褪色来鉴别醛糖和酮糖。

　　由乙醛在有催化剂的条件下（催化剂为乙酸锰：（CH3COO）2Mn）和氧气发生氧化反应制得。 　　乙醛制成乙酸，可以用发酵法。发酵法是乙酸最原始的制造方法。这种方法采用含糖类物质的植物果实发酵制乙醇，乙醇经过发酵氧化成乙醛，再将乙醛进一步氧化制得乙酸。食用的醋就是用这种方法制成的。除上述方法之外，还有许多制取乙酸的方法和途径。

没这个意思吧，你就说我们一起崇拜不就得了