用英语描述水的作用【精选20篇】

Hello,everyone!Today,Id like to talk to you about myself.Im a outgoing girl,For example, Im always happy no matter what happens.Im generous and am ready to help others.Such people are welcomes wherever they go,because they may bring pleasure to others.

We all live under the same sky and in the same sun,we all hope there are more friendships and more smiles among us. So let‘s improve our characters,thus our life will become more cheerful.

Maybe the last water is our tears

As we know water is made up of our life,we could not leave without water.No water will no we.

Water is needed more and more,because our industry and agriculture produce developed fast.Somewhere water are scare,and some rivers are no water in them.But just little water is polluted,more waste water did not handled and discharge into river.

Around us there are a lot of students dont pay attention to save water,for example: after they washing their face and rinsing the mouth,they dont turn off the water tap .Let the water flowing day and night. What a pity!

Expect the tings I just mention,there are more and more in our life.So now I hope our students take care of wate.And the same time we need do things to prevent water pollute as we can do .Thats what I want to say.Why not do it right now,come on .

I remember the first day when I move to the new home, there is girl who

lives next to my house. She is very nice and willing to help me solve my

problems. Thanks to her, I get used to the new environment soon. I have made

many friends, but in my heart, this girl is my best friend. I hope our

friendship can last forever.

Amongall means of transportation, I like bicycle most. Its cheap as well aspopular.

Thereare many advantages to ride the bicycle. In the first place, riding bicycle makesme feel independent. I can go anywhere by bicycle. Especially during rushhours, I can still move freely. Secondly, using a bicycle is good forenvironment protection, because it wont emit any waste gas. Moreover, bicycle ridingis also a good sport. While riding a bicycle, I can exercise myself, which ishealthful to me.

Inmy free time, I often ride my bicycle to get around in the downtown area or inthe countryside, so as to relax myself. Its really a nice outdoor activity forme, I think.

You must know that the Spring Festival, the Spring Festival is the most solemn festival in our country. Want to know what the festival custom, just to have a look at my composition.

Everyone set off firecrackers during the Spring Festival, firecrackers is made for the Spring Festival because it is over, so every Chinese New Year approaching, every family fireworks, to celebrate the arrival of the Spring Festival. Set off firecrackers in the ancient world is to keep a monster named "year", "year" oppressed the people, but people set off firecrackers off it. So set off firecrackers to this as a Spring Festival customs.

In addition to set off firecrackers, and stick couplets is a kind of Spring Festival customs. Couplet is made of red paper, it is believed that red can decline demon in addition to magic, so do couplets written on red paper. Each with a couplet, also posted on the door "f" word, "fu" is backwards paste, why? Ha ha, mean to say "fu" (to).

New Year is the Spring Festival custom, New Year is my favorite, because can earn money in New Year!! New Year is in commonly on the first morning, everyone got up early, say hello to each other when they met said message, then each other happy New Year New Years money, this is my most happy moment! Worship the year I went home for his New Years money, flattered.

Spring Festival custom and there are many, such as wear new clothes, eat dumplings together... Now also held some games over the years, you can play, everyone is happy. The custom of Spring Festival so much!

大家肯定都知道春节吧，春节是我国最隆重的节日。想知道这个节日有什么习俗，就来看看我的作文吧。

大家在过春节时都放鞭炮，因为鞭炮是为春节而制作的，所以每逢春节来临，家家户户都燃放烟花爆竹，庆祝春节的到来。放鞭炮在古代是为了赶走一个叫“年”的怪兽，“年”欺压百姓，但人们放鞭炮赶走了它。所以放鞭炮作为一种春节习俗流传至今。

除了放鞭炮，贴对联也是一种春节习俗。对联是用红纸做的，人们相信红色可以降妖除魔，所以用红纸做对联。每一家都贴有对联，门上还贴了“福”字，“福”是倒着贴的，为什么呢?哈哈，意思是表示“福”倒(到)了。

拜年也是春节习俗，我最喜欢拜年了，因为拜年可以挣压岁钱呢!拜年一般在大年初一的早上，大家都起床很早，相遇时互相问好说祝福语，然后互相拜年发压岁钱，这时候是我最高兴的时刻啦!拜完年我回家数着自己的压岁钱，心里美滋滋的。

春节的习俗还有很多，如穿新衣，大家一起吃饺子……现在这几年又举办了一些游戏，可以玩，大家都开心。春节的习俗真多呀!

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Going to high school is my first time to leave home. I have to live in

school from Monday to Friday. I like to stay away from my parents for some time,

because I can make my own choice and be free to go anywhere. My friends and I

like to spend the weekend in the countryside that near the city we live. It is

the short travel that I can not only appreciate the beautiful scenery, but also

learn to be independent. The things that nature teaches me are a lot. I can see

from the color of the cloud to predict the weather and the sound of of animals

have different meanings. All of these are hard to know from the books. I have my

own thinking from these trips, and the way to take care of myself helps me to

grow up.

However mean your life is, meet it and live it; do not shun it and call it

hard names. It is not as bad as you are.

It looks poorest when you are richest. The fault-finder will find faults in

paradise. Love your life, poor as it is.

You may perhaps have some pleasant, thrilling, glorious hours, even in a

poor-house. The setting sun is reflected from the windows of the alms-house as

brightly as from the rich mans abode; the snow melts before its door as early

in the spring. I do not see but a quiet mind may live as contentedly there, and

have as cheering thoughts, as in a palace.

Recently, we had the network, the text inside said: network can build people, also can push people into the abyss. It is true that some people can make good use of network resources, and some people are addicted to the network, is the network the wide net, bound her soul, was buried by his Internet cafe those unseen trap own mood... Also talked about in the text: a high school student in the net cafe play games when the unfortunate death, via a doctor appraisal, belongs to the typical by euphoria and the death of a heart attack.

If you are addicted to the Internet every day, to cause a decline in serious vision, even retinal detachment; If you are addicted to the Internet every day, study result will fall...

If you are addicted to the Internet every day, the first thing you should think about your parents, your parents for giving birth to you, just want to hello good reading, have a good job in the future, live a good life? But you failed to live up to your parents, your parents want you to have a good study, day day up, have a good achievement in the future, and you have a day in the Internet cafe, playing computer games, addicted to the Internet, also hurt yourself, cause his grades plummeted. Result in severe myopia, or retinal detachment; Lead yourself to the side, you are the hard way! You failed to live up to your parents, and hurt myself, so you must correct, dont be addicted to the Internet, you will tell others, because the network will push people into the abyss.

"Good medicine for health tastes bitter to the mouth, advice when most needed is least heeded line." The other words well, today, I told you to use the words, to grasp myself well, dont be addicted to the Internet. Hold yourself, is to grasp the course of their life; Hold yourself, is to give yourself a piece of blue sky...

最近，我们上了有关网络的课文，里面讲到：网络可以造就人才，也可以将人推向无底深渊。确实，有些人能利用好网络资源，而有些人却沉迷于了网络之中，被网络这张大网网住了手脚，束缚了心灵，被网吧里那些看不见的陷阱埋葬了自己的花样年华……课文中还讲到：一个高中生在网吧玩游戏时不幸猝死，经医生鉴定，属于典型的由过度兴奋而引发心脏病的死亡。

如果你每天沉迷于网络之中，会导致视力严重下降，甚至视网膜脱落;如果你每天沉迷于网络之中，学习成绩会一落千丈……

如果你每天沉迷于网络之中，你首先该想想你的父母，你的父母为了生下你，不就是想要你好好的读书，将来有个好工作，过着美好的生活吗?可是你却辜负了你的父母，你父母想要你好好读书，天天向上，将来有个好成就，而你却每天泡在网吧，玩着电脑游戏，沉迷于网络之中，还伤害了自己，导致自己的学习成绩一落千丈;导致自己严重近视，甚至视网膜脱落;导致自己走上了歪路，你真是敬酒不吃吃罚酒啊!你又辜负了你的父母，又伤害了自己，所以你一定要改正过来，千万不要沉迷于网络之中，你还要告诫别人，因为网络会将人推向无底深渊。

“良药苦口利于病，忠言逆耳利于行。”这句话说得好，今天，我要用这句话告诫你们，要好好地把握自己，不要沉迷于网络之中。把握自己，就是把握好自己的人生航向;把握自己，就是给自己一片蔚蓝的晴空……

Everyone has their own childhood memory. -- -- -- -- -- words, childhood is hazy poetry, is the picture of quietly elegant, classic songs... The childhood I naive, clever and lively; My childhood, I imagine rich, optimistic and cheerful.

In the past years, I am a simple and happy. Just dont say looking at the sky stunned the relaxed, not to mention the hiding in bed sleeping in, also dont have to say to imitate the excitement of shooting stars alone is sucking the sorbet watching cartoons wandering in the street the incomparable simple happiness, can let me memorable.

In the past years, I feel the something called "love". May be the teacher take a disease has continued to our class; Maybe mom brings to me is dry in the rain and comfort; Perhaps the students take the initiative to help me clean the classroom health scene... What sort of scene touched my sensitive heart, is impossible. But one thing is for sure, in the "love", "love", "love" and "love" in the endless sea, I raise the sails of hope, efforts to move forward.

In the past years, the time like an arrow, just leave me alone XingChanYingGu wandering in the memory of the island. That each shining pearl, is I the same as when you giggle? That only white gulls heron, the same as when you are my fantasy? That hits the tall trees, is the appearance of when I was growing up... Petals gently picked up a piece of mind, I want to make it into a chic bookmarks, let it forever in the world of words its fragrance, forever......

每个人都拥有属于自己童年的记忆. -----题记童年，是朦胧的诗，是淡雅的画，是经典的歌……童年的我，天真幼稚、机灵活泼;童年的我，想象丰富、乐观开朗。

在那逝去的年华里，我是简单而幸福的。不必说望着星空发呆的悠闲，不必说躲在被窝里睡懒觉的惬意，也不必说模仿球星投篮时的兴奋，单是吮吸着冰糕看着漫画在大街上闲逛的那份无与伦比的简单快乐，就能让我回味无穷。

在那些逝去的年华里，我体味到一种叫“爱”的东西。也许是老师带病仍坚持为我们上课的情景;也许是妈妈冒雨为我送来干爽和安慰的情景;也许是同学们主动帮我打扫教室卫生的场景……究竟是哪种情景触动了我敏感的心弦，都无从谈起。但有一点可以确定，在“母爱”、“师爱”、“友爱”等“爱”的一望无际的海洋中，我扬起希望的风帆，努力向前驶去。

在那些逝去的年华里，时间像箭似的掠过，只留我独自一人形单影孤地在记忆的孤岛上徘徊。那一颗颗闪亮的珍珠，是我傻笑时的样子吗?那一只只洁白的鸥鹭，是我幻想时的样子吗?那一棵棵高大的树木，是我成长时的样子吗……轻轻拾起一片思绪的花瓣，我要把它制成一张别致的书签，让它永远在文字的世界里散发芳香，永远……

Everyone likes the New Year, because there are a lot of happiness, can seldom meet relatives before sitting together, eat the reunion dinner, the elder to send money to the younger generation. Lucky money, of course, personal disposal method is different, some people spend New Years money is extravagant, havent open, New Years money is spent all; Also some people save money, I am going to put money into several parts to use.

The first part: to pay fee, like milk, food, cannot rely on mom and dad, I have to go to more than 100 yuan, the rest of the money must be to ssi "loan", hee hee.

The second part: used to buy books, books can enrich our after school life, I buy books there are reference books, erhu books, the teacher let us buy papers have to go to 60 yuan.

The third part: to buy school things, such as pencils, erasers, rulers... By the way, the sixth grade are using protractor, I have to get it ready, common to 20 yuan.

The fourth part: is to save money, plus interest!

Above is my financial plan, I must cherish the "property", not big spenders, to get the content of the plan.

人人都喜欢新年，因为有许多快乐，以前很少见面的亲戚可以坐在一起，吃顿团圆饭，长辈要给晚辈发压岁钱。当然了，个人的压岁钱处置办法不一样，有些人花压岁钱可谓是大手大脚，还没开学，压岁钱就花光光了;也有些人把压岁钱存起来，我要把压岁钱分成几部分来用。

第一部分：用来交牛奶、伙食等费，不能依赖爸爸妈妈，我得用去100多元，剩下的钱必须向老爸老妈“贷款”，嘻嘻。

第二部分：用来买书，书可以丰富我们的课余生活，我买的书有课外书，二胡书、老师让我们买试卷等得用去60多元。

第三部分：用来买学习用品，比如铅笔、橡皮、直尺……对了，六年级还得用量角器，我得把它准备好了，共用去20多元。

第四部分：就是把钱存起来，还有利息呢!

以上就是我的财政计划，我得珍惜“财产”，不能大手大脚花钱，争取把计划的内容做好。

我们在语文作文中的描写人物特征时，相对于在英语作文中要得心应手得多了。以下是小编给大家带来描述人物的英语作文范文，以供参阅。

A man of small stature, he was only five feet, six inches at the most, and he was somewhat overweight even in his prime. His Italian heritage was evidenced by his dark hair, olive complexion, and strong nose. A neatly trimmed moustache adorned his upper lip. In young years, a cigar frequently protruded from under the dark moustache. Clear blue eyes contrasted nicely with his olive tone.

There was a kindnein those eyes, and they always showed his every emotion.

Making him so easy to read.An easygoing manner acted like a magnet for him, attracting the love and respect of everyone he cameJn contact with, During World War II, his compassionate nature was utilized as a nurse in the Navy and in the Marines. Scars on his back were proof of his heroism. He never really spoke much about the war, but he only would tell his favorite story of how he delivered a baby in all that turmoil He married during his stint in the service, and soon a son and a daughter would also share his love. Both of them having dark hair, olive skin, and blue eyes. everyone said how they were "the spitting image" of him, Oh, how he beamed at that statement. He worked very hard at being a good husband and father. Years passed, and he became a grandfather who was affectionately called "papa." His grandchildren adored him and were his constant companions.

Going to McDonalds became a weekly outing for them. Bout, alas, the heart that had always given too much Jove grew weaker and weaker. After two heart attacks and a triple by-pass, his loving heart stopped, and he breathed forth his soul into the arms of God. At his funeral mass, the priest spoke of how his succewas not stored in banks but in that hearts of those who loved him. From this perspective, he was a most-successfu man and truly died a millionaire. This profile of Bob La Coy is very accurate. I know because he was my Joying father.

It is generally believed that there is a good supply of fresh water. But to our disappointment, the fact is just the opposite.

As we can see, the world population is growing rapidly day by day. So enough fresh water is needed to feed such a big population. What’s more, with the development of industry, factories and vehicles produce poisonous gases or wastes, which consequently results in the pollution of water. Though fresh, a good amount of it can no longer be used. Only quite limited fresh water resource is available to human beings. So it’s high time for us human beings to take quick action to protect water resource. Stop pollution and save water, otherwise, we cannot survive on the earth.

With fresh water, the world will be prosperous.

Thanks to my parents, I have been to many places. I feel so lucky to

witness the scenery by my eyes. I love to travel since I was very small. I have

made up my mind that I must continue my journey on my own. As I grow up, I have

planned some trips and learned a lot.

Travel helps me to be independent. For many people, they trend to travel by

groups, which is very convenient. The companies plan everything for them, and

they just need to follow the schedules. But as for me, I only enjoytraveling

freely, so I will scan a lot of information and select the useful message. I

learn the history and culture of the countries and get to know all kinds of

applications.

The most important thing of travel is to broaden my vision. When my friends

talk about the beautiful places from the textbook, I will tell them that I have

been there and can give them my opinion. The way I talk and the knowledge I

offer to them make me stand out and I am so proud of myself.

题目：请以“saving water”为题，并根据以下提示写一篇不少于60单词的作文。

saving water

1 what do we use water for?

2 why water is very important in our daily life?

3 how do we save water?

参考范文

as we all know, water is essential in our daily life. we drink water every day, we use water to wash things and cook food, we also use water to make machines. people cant live without water.

我们都知道水对于日常生活的重要性。我们每天喝水，用水洗东西和烹制食物，我们还用水来制造机器。离开水，人类就无法存活。

though about 75% of the earth is covered with water, only 3% of it is fresh water. so we must save water by having a shower instead of a bath. we can save water by fixing dripping taps immediately and we can also save water by not washing under a running tap.

虽然地球75%都被水覆盖，但其中只有3%是淡水。所以我们应该用淋浴代替泡澡来节约水，同时及时修好滴水的水龙头，并且不要开着水龙头洗东西。

Water水

As the saying goes, the woman is made of water, that I said that my

mother is god. Mother is very love cry, tears like spring rain, in an unbroken line. Watch TV, my mother was often moved to tears; scary stories, mother sometimes cry; however, when I do something wrong, mothers love cry. I am very naughty, always love to do something wrong. Once, I and my

grandmother bickering, the grandmother gas straight said to his mother:" see, this is you teach the good son." In the evening, and everyone else to sleep, my mother came to my room, wake me up, tell me a reason, but I still have a little impatient, my mother said, tears as the bead curtain, I feel anxious, saw her mother look, I will get up immediately went to grandma house grandmas

apology, grandmother laughed, then point behind, I saw my mother at the door secretly laugh, from now on, my mothers eyes became my life buoy. Motherly love like water, my mental errors washing clean out completely.

俗话说女人是水做的，那我说妈妈就是水神。妈妈很爱哭，眼泪像春雨一样，连绵不绝。看电视时，妈妈经常会被感动的哭；讲恐怖故事时，妈妈有时也会被吓哭；不过，当我做错了事时，妈妈最喜欢哭。我很淘气，总爱做一些错事。有一次，我和外婆斗嘴，把外婆气的直对妈妈说：“看，这就是你教的好儿子。”到了晚上，等其他人都睡了，妈妈来到我的房间，把我叫醒，对我讲了一堆大道理，可我还有点儿不耐烦，妈妈说着说着眼泪就像珠帘一样，我难过急了，看见妈妈的样子，我马上起床跑到外婆房里给外婆赔礼道歉，外婆笑了起来，然后指指背后，我看见妈妈在门口偷偷地笑了，从此以后，妈妈的眼睛就成了我人生的航标。母爱似水，把我的错。

[学生英语作文：水

Someone said: "father is like a mountain, solemn and great. A mothers love is like water, gentle and kind" a mothers love is like water, because it is clear as water, no dirty things, let us bathe in the sea of love, and spring-like weathering rain, moistens our young and small mind. A mothers love to love you not because of any self, her love is selfless, is not return, so she is willing to pay. A mothers love can sometimes be like water, gently pushes us these small boats, filled with strong love around water, protect us. A mothers love is like water, you understand the mother the softness and the purity of love?

Someone said: "father is like a mountain, solemn and great. A mothers love is like water, gentle and kind" a mothers love is like water, because it is clear as water, no dirty things, let us bathe in the sea of love, and spring-like weathering rain, moistens our young and small mind. A mothers love to love you not because of any self, her love is selfless, is not return, so she is willing to pay. A mothers love can sometimes be like water, gently pushes us these small boats, filled with strong love around water, protect us. A mothers love is like water, you understand the mother the softness and the purity of love?

[母爱似水为题目的英语作文

Water is important.

We use water to brush our teeth.

We use water towash our clothes.

If there is no water,cooks in restaurants will have no water to cook food.

If there is no water,firemen will not have any water to put out fires.

We should save water.

We shouldnt waste water.

We can save water by fixing a dripping tap.

We can save water by not playing water games.

[水英语作文

I like many animals, but my favorite is the giant panda. Giant pandas are rare animals in China, their hometown in sichuan province.

Giant panda looks interesting, chubby, plump and cute. Its head and body are white, only the rim of the eye, ear, and the shoulder is dark brown. Especially that a pair of black rim of the eye, long in white face, like wearing a pair of sunglasses, plus the clumsiness and go up and look in all directions, appear very lovely.

Pandas in zoos, through training the breeder uncles and aunts, also many performance! Such as drilling circle, upright, upside down, or cartwheel and pushing the car. I most like to see the giant panda says. It huddled in her chubby body, like a big ball rolling, funny, very fun. Pandas dont like the cat that greediness eat fish meat, dont eat the delicious fruit, like a monkey pandas like eating bamboo leaves and shoots.

I love pandas, it can be seen everywhere in my little world. My pencil-box. The head of a bed, desk, plastered with pictures of giant pandas. In art class, if the teacher asked the paint free proposition, I often draw a panda. These, may all is because I am too fond of pandas!

水——20亿人生命的源泉；水——世间万物生存的希望；水——人类最渴望的目标。然而，这样可贵、神圣的生命之水，却因为人类的自私，人类的贪婪，在人类的摧残下，毁坏了一切。

慢慢的，慢慢的，世界上缺水的国家，缺水的省、市、自治区越来越多。目前，世界上就有335000000人没有足够的水。随着科学事业的逐渐发展，厂房高楼的逐渐增多，水短缺问题越来越严重。随着人类的破坏，原来的那个蔚蓝色的水晶球已经不再明澈，不再蔚蓝了，即将干枯。

虽然地球71%表面覆盖的是水，但是其实淡水资源只占了地球总水量的2%左右，而可被人类利用的淡水总量只占地球上总水量的十万分之三，占淡水总蓄量的0。34%。由此可见，地球上可被利用的水并没有人类想象的那么多，如果让它们继续遭到人类的摧残，早晚有一天，它会消失的。因此，我们应该保护水资源，为保护水资源尽到自己的一份力。

虽然我还是一个12岁的小学生，但我要用我手中的那支神圣的笔，呼吁大家保护水资源。

水的自述

我是水，纯净的、美丽的、清雅的、高尚的水，我从雪地来，我从山中来，慢慢地、缓缓地，穿透高山，跨过平原，汇入大海。

我是水，晶莹的雪，是我的前身，甜甜的雨，是我的兄弟，苦涩的泪，是我的姐妹。我的足迹遍布地球，我的臂膀爱抚着每个角落。

只因为有了我，生命才会如此完美；只因为有了我，世间万物才如此完善。我不但是田地丰厚的营养品，是农作物的增长剂，更是人类必有的东西。淘米洗菜需要我，洗衣灌溉需要我，人们渴时喝的是我，脏时洗的是我，急时用的是我，但是不断破坏的也是我。

我给人类带来了幸福，可人类为什么这样对我？我默默地，无私地哺育着大地。我在山的腰间潺潺流动，在草原的中间快乐奔腾，在大海的怀抱中汹涌澎湃。我是善良的、忠诚的。我把一切都奉献给人类，面对人类的冷漠无情，我会不由自主地发怒，泛滥成灾，能够主宰万物的是人物，可破坏生态环境，也是人类当今中国正面临着两大问题：一是资源问题，二是环境问题，其中资源问题中，中国人均水资源占有量是世界人均占有量的一半。环境问题中，我的污染程度更是不言而喻了，我受到侵犯，就会影响水生物和家作物的生长，增加疾病疾病的传播，危害人体的健康。因此，保护环境是刻不容缓的事实，实施可持续发展战略是是加快社会主义现代化的必然捷径。人类只有一个家园，请爱护这个唯一的摇篮。

因此，我希望得到人类的珍惜，更希望得到人类的保护。请停手吧，不要再折腾我了！

青山绿水今何在？

幕幕往事，还是易如反掌地时时浮现。

记忆中的家乡的水，很美！平淌静如画，与青山相互照应，所以青如山之绿；有的会成溪，随处可见。那便是家乡的水。

当你伸出手轻抚它时，它便从手指间滑过，柔柔的，清凉可人。在我第一次到那的时候，天天到那儿去用那水洗脸。那时正是炎夏，我便和爸爸在里面游泳。扑咚！一声跳进水里，顿时洗去了所有的疲惫，清凉遍布全身，犹如在人间天堂一般。

又一次，在五年之后，我和爸爸、奶奶再次来到了这里。一到河边，就被眼前的一切惊呆了。我竟难以相信这就是我深深难忘的家乡水。

还有湖南著名的湘江也是

听父母说，以前，湘江水特别明澈，一到炎夏就有很多人来游泳。人们亲切的称它为绿色之河。

然而现在，古老的湘江已经被吞噬了，只见河面上浮满了塑料、药瓶、白色污染发出令人恶心的臭味。享有绿色之河之称的湘江已成为了一条死河。

忽然，我明白了，今日的人们一味的追求发展，而忽视了保护环境，保护水资源的重要性。

整条河上回响起河水的叹息声：人们摧残了我的躯体！

唉！青山绿水今何在？

如果失去水

人们啊人们！

如果失去了水，你喝什么？用什么来灌溉每一寸土地，用什么来滋润每一株小草？如果没有如此美丽的水，又哪来苏轼的千古佳句水光潋滟晴方好？如果没有水，世间万物又何在？

当我们面对这样的水时，您还会歌颂它的美丽，感叹它的生机吗？面对摆在眼前的事实，难道还不足以给人们敲响水之患的警钟，敲醒人们的觉悟吗？

俗话说：失去了，才懂得珍惜！

人们，难道真的要让最后一滴水成为人类伤心欲绝、悔恨觉悟的眼泪吗？请不要失去了后才懂得它的珍贵，到那时候恐怕后悔也没用了。

请珍惜每一滴水吧！不要再对其进行糟踏了。就把这当作给水的报答吧！

海水盐度如果我们分析海水的盐度，会发现地区间只有轻微的变化，然而有些小的变化是重要的。

导致海洋的盐度变化的基本过程有三个，其中之一是通过蒸发的方式即把液态水转化为水蒸气来减少海洋中的水分。

这样由于盐留了下来，所以盐度增大。

当然，如果这种方式走向极端，将会余下白色的盐晶体。与蒸发相反的是降水，如降雨，由此水被加入海中，海水被稀释，从而盐度降低。

这种情形会发生在大量降雨的地区，或江河入海岸处。因此，盐度通过蒸发减少水分而上升或通过降水或径流增加淡水成分而下降。一般来说，在阳光很

强烈的热带地区，海水的盐度略高于世界上其它没有热带那样多的蒸发的地区。同理，在江河稀释海水的海岸地带，海水盐度略低于其它海区。

第三个可以变更盐度的过程与海洋中冰的形成和融化有关。海水冻结时，溶于其中的物质被留了下来。这样，在新形成的海

水冰面的正下方的海水比在冰形成之前有更高的盐度。

当然，当冰融化的时候，会降低周围水中的盐度。

在南极洲边缘的威德尔海中，结冰过程增加低温海水的盐度，从而形成了浓度最大的海水。这些大密度的海水下沉，可以在世界海洋的深水域发现。

if the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. nevertheless, some of these small changes are important. there are three basic processes that cause a change in oceanic salinity. one of these is the subtraction of water from the ocean by means of evaporation--- conversion of liquid water to water vapor. in this manner the salinity is increased, since the salts stay behind. if this is carried to the etreme, of course, white crystals of salt would be left behind.

the opposite of evaporation is precipitation, such as rain, by which water is added to the ocean. here the ocean is being diluted so that the salinity is decreased. this may occur in areas of high rainfall or in coastal regions where rivers flow into the ocean. thus salinity may be increased by the subtraction of water by evaporation, or decreased by the addition of fresh water by precipitation or runoff.normally, in tropical regions where the sun is very strong, the ocean salinity is somewhat higher than it is in other parts of the world where there is not as much evaporation. similarly, in coastal regions where rivers dilute the sea, salinity is somewhat lower than in other oceanic areas.a third process by which salinity may be altered is associated with the formation and melting of sea ice. when sea water is frozen, the dissolved materials are left behind. in this manner, sea water directly materials are left behind.

in this manner, sea water directly beneath freshly formed sea ice has a higher salinity than it did before the ice appeared. of course, when this ice melts, it will tend to decrease the salinity of the surrounding water.in the weddell sea antarctica, the densest water in the oceans is formed as a result of this freezing process, which increases the salinity of cold water. this heavy water sinks and is found in the deeper portions of the oceans of the world.

As we know water is made up of our life,we could not leave without water.No water will no we.

Water is needed more and more,because our industry and agriculture produce developed fast.Somewhere water are scare,and some rivers are no water in them.But just little water is polluted,more waste water did not handled and discharge into river.

Around us there are a lot of students dont pay attention to save water,for example: after they washing their face and rinsing the mouth,they dont turn off the water tap .Let the water flowing day and night. What a pity!

Expect the tings I just mention,there are more and more in our life.So now I hope our students take care of wate.And the same time we need do things to prevent water pollute as we can do .Thats what I want to say.Why not do it right now,come on .